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Journal articles on the topic 'Centrifugal casting method'

Author: Grafiati
Published: 4 June 2021
Last updated: 8 February 2022

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1

Mäsiar, H., L. Repka, P. Lipták, and O. Híreš. "Investigate the Possibility of Tekcast Methods Used for Casting Polymeric Resin Materials." Archives of Foundry Engineering 14, no. 2 (June 1, 2014): 119–22. http://dx.doi.org/10.2478/afe-2014-0049.

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Abstract Contribution gives an overview of knowledge about the method of centrifugal casting with orientate on Tekcast system. Company Tekcast Industries has developed a device for centrifugal casting, extending the area of production of castings or prototyping of metal or plastic. Materials suitable for the centrifugal casting with flexible operating parameters may include non-ferrous metal alloy based on zinc or aluminum or non-metallic materials such as polyester resins, polyurethane resins, epoxy resins, waxes and the like. The casting process is particularly suitable for a wide range of commercial castings and decorative objects.
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2

Rostamzadeh, Safar, Behzad Niroumand, and Ali Maleki. "A Novel Method for Semi-Solid Casting of Hypereutectic Gray Cast Iron in Expendable Mold." Solid State Phenomena 256 (September 2016): 237–42. http://dx.doi.org/10.4028/www.scientific.net/ssp.256.237.

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In the present research, the possibility of single stage semi-solid casting of a hypereutectic gray cast iron in a sand mold was investigated. For this purpose, a specially designed chilled sprue sand mold rigged to a vertical centrifugal casting machine was used. The molten cast iron was poured in the chilled sprue sand mold at 1275 oC at a rotation speed of 400 rpm. Two control samples were also poured at 1275 oC under gravity and centrifugal casting conditions in the same mold without sprue chilling. Microstructures and mechanical properties of the specimens were then characterized. The results showed that the average length and thickness of the primary solid phase, i.e. the Kish graphite, and those of the eutectic flake graphite were smaller in semi-solid centrifuged castings and their hardness were higher than those of the control samples. The results are discussed in terms of the shearing and chilling effects of the designed sprue during the initial stages of pouring.
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3

Jayakumar, E., Jibin C. Jacob, T. P. D. Rajan, M. A. Joseph, and B. C. Pai. "Processing and Characterization of Hypoeutectic Functionally Graded Aluminum – SiC Metal Matrix Composites." Materials Science Forum 830-831 (September 2015): 456–59. http://dx.doi.org/10.4028/www.scientific.net/msf.830-831.456.

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The present study describes the processing and characterization of hypoeutectic A319 functionally graded Aluminium metal matrix composite (FGMMC) reinforced with 10 weight percentage SiCp particles of 23 μm size. FGMMC’s are processed by liquid stir casting method followed by vertical centrifugal casting. Metallographic analysis of FGMMC casting reveals the influence of the centrifugal force on the gradation of various phases in the matrix and an increasing gradient distribution of SiC reinforcements gradually from inner towards the outer periphery forming different zones. Tensile and the compressive tests show that the variation in properties are structure sensitive and is confirmed by the dry wear tests. The study clearly depicts the gradient nature in the structure and mechanical properties of the FGM castings produced by centrifugal casting method.
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4

Kusnowo, Roni, and Kus Hanaldi. "Pengaruh Kecepatan Putar Terhadap Hasil Coran pada Metode Pengecoran Sentrifugal dalam Pembuatan Produk Pisau Pakan Ternak dengan Material Ni-Hard1." Manutech : Jurnal Teknologi Manufaktur 11, no. 01 (July 31, 2019): 1–7. http://dx.doi.org/10.33504/manutech.v11i01.92.

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Animal feed knife is a tool that serves to cut and chop animal feed consisting of grass as the main ingredient with additives such as bran, herbs, centrate, cassava, tofu pulp and others. Therefore, as a cutting tool must have the properties of friction resistance, impact resistance, and have good sharpness, so that the material chosen is Ni-Hard 1. The use of centrifugal casting method was chosen because it has the advantage of being able to make castings with relatively thin thickness this is due to the influence of the centrifugal force on the distribution of metal liquids throughout the cavity in the mold. Case study in this study is the use of centrifugal casting methods as an alternative to gravity casting methods to overcome defects of misruns. This research was conducted to investigate the effect of speed on the formation of castings products. The method that was carried out began with a literature study on centrifugal casting, and continued by determining the material, the temperature of the cast is in the range 1250ºC - 1300ºC, and the type of mold. The next step is to do work drawings, pattern making, mold making, casting processes, fettling processes, and analysis. With variations in speed of 200 rpm, 300 rpm and 400 rpm, it can be seen the optimal speed for making this product. The results of this study obtained optimal speed at a speed of 300 rpm to make good quality of animal feed knife products.
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5

Zhang, Jun, Jian Xin Zhou, Ming Yuan Zhang, Sheng Yong Pang, Dun Ming Liao, Ya Jun Yin, and Xu Shen. "Numerical Simulation of Filling Process in Vertical Centrifugal Casting Based on Projection-Level Set Method." Advanced Materials Research 314-316 (August 2011): 364–68. http://dx.doi.org/10.4028/www.scientific.net/amr.314-316.364.

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A three-dimensional incompressible two phase flow model of vertical centrifugal casting is proposed to simulate the fluid flow of mould filling process accurately and effectively. The Projection method is adopted to solve the govern equation of the flow field, and the Level Set method is used to capture the free surface. The mold filling of a complex part with thin-wall is simulated. The numerical result shows that the Projection-Level Set method could simulate centrifugal casting effectively. The present study has a guiding significance to the production of vertical centrifugal casting.
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6

Aliyev, Elman. "NATIONAL ECONOMIC SIGNIFICANCE UNDER THE CONDITIONS OF THE ECONOMY OF KNOWLEDGE OF CASTING PRODUCTION AND THE KEY DIRECTIONS OF ITS DEVELOPMENT." ETM - Equipment, Technologies, Materials 05, no. 01 (January 20, 2021): 16–20. http://dx.doi.org/10.36962/etm0501202016.

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The modern economy is increasingly based on knowledge and, more broadly, on intangible assets that ensure sustainable innovation growth. The formation of an innovative type of knowledge economy can be considered one of the fundamental development trends at the global level. The modernization of the economy in the lifetime period means the introduction of modern technologies, increasing energy efficiency and labor productivity, producing high-quality products according to the most advanced standards. Ultimately, this is the creation of a competitive economy. Keywords: Casting, billet, castings, method of making castings, injection molding, centrifugal casting, investment casting, shell casting, chill casting.
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7

Velikov, Angel, Ivanov Ivanov, and Ivan Georgiev. "STRUCTURAL INVESTIGATION OF THE INTERMEDIATE LAYER IN A BIMETAL MILL ROLLER PRODUCED BY THE METHOD OF VERTICAL AXIS CENTRIFUGAL CASTING." ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 1 (June 16, 2021): 255–58. http://dx.doi.org/10.17770/etr2021vol1.6533.

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Subject of the investigation is a bimetallic mill roller with external, working layer from high chromium material and inner, supporting layer from ductile cast iron. The processes, accompanying the formation of a transition layer in bimetallic castings, produced by centrifugal casting have been investigated. Attention has paid to the structural changes in the transition zone, caused by the diffusion processes occurring during the casting and crystallization.
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8

Stradomski, G., M. Nadolski, and Z. Stradomski. "Technological Assessment of the Possibility of Making Light-section Castings of GX2CrNiMoN25-6-3 Cast Steel by the Centrifugal Casting Method." Archives of Foundry Engineering 15, no. 3 (September 1, 2015): 57–60. http://dx.doi.org/10.1515/afe-2015-0060.

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Abstract The paper presents the results of investigation into the technological possibility of making light-section castings of GX2CrNiMoN25-6-3 cast steel. For making castings with a wall thickness in the thinnest place as small as below 1 mm, the centrifugal casting technology was employed. The technology under consideration enables items with high surface quality to be obtained, while providing a reduced consumption of the charge materials and, as a result, a reduction in the costs of unit casting production.
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9

Li, Qiang, Jing Yuan Yu, and Xiu Juan Meng. "Study on Preparation and Property of Carbon Fiber/HA Composites by Centrifugal Slip Casting Method." Advanced Materials Research 1058 (November 2014): 180–84. http://dx.doi.org/10.4028/www.scientific.net/amr.1058.180.

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In this paper, centrifugal slip casting method was use to prepare carbon fiber/HA composites using the nanoHA particles and carbon fibers as initial materials. The morphology of the carbon fiber after modification of p-aminobenzoic acid was observed. The rheological characteristic of the carbon fibers/HA slurries was studied. The effects of the centrifugal acceleration on green density uniformity of carbon fiber/HA composites were analyzed. The bending strength and fracture toughness of carbon fiber/HA composites were measured. The results show the roughness of carbon fibers treated by p-aminobenzoic acid increases. At the pH of 10 and 5 wt% dispersant, the HA slurries with 3 vol% carbon fibers have good fluidity. After centrifuged at 2860 G for 30 min, the green compacts of HA composites have high and uniform the green density. After sintered at 1100°C for 1h, compared with carbon fiber/HA composites prepared by dry pressing, the modified carbon fiber/HA composites prepared by centrifugal slip casting have higher bending strength and fracture toughness of 89.4 MPa and 1.92MPa1/2, respectively.
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10

Watanabe, Yoshimi, Yasumasa Oya, and Hisashi Sato. "Novel Centrifugal Casting Method by using Machining Chips." Transactions of the Materials Research Society of Japan 38, no. 1 (2013): 21–26. http://dx.doi.org/10.14723/tmrsj.38.21.

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11

Wang, Si Kun, Jing Yuan Yu, Qiang Li, Er Yong Zheng, Yong Gang Duan, and Guo Chao Qi. "Preparation of Gradient ZTA Ceramic by Centrifugal Slip Casting Method." Advanced Materials Research 569 (September 2012): 324–27. http://dx.doi.org/10.4028/www.scientific.net/amr.569.324.

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Gradient Zirconia toughened alumina (ZTA) ceramics with high fracture strength and toughness were prepared using centrifugal slip casting method. Aqueous Al2O3-20vol% ZrO2 slurries with different solid contents were prepared and the rheological characteristic of the slurries were investigated. The effect of solid loading of slurries on green density difference of ZTA ceramic compacts was observed. Mass segregation of Al2O3 and ZrO2 particles were studied. Microstructure and bending property of the sintered ZTA ceramics were investigated. The results show that the segregation phenomenon of Al2O3-ZrO2 slurries comes form the difference of settling velocity of Al2O3 and ZrO2 particles. With the increase of solid content of slurries, the gradient distribution of green density becomes unconspicuous. After sintered at 1550○C for 2 h, the gradient ZTA ceramics centrifuged with 20vol% slurries have high sintered density (99.2% TD) and continuous gradient distribution of Al2O3 and ZrO2 particles. The fracture strength and toughness of gradient ZTA ceramic are 732MPa and 5.4MPam1/2, respectively.
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12

Hirata, Naoya, and Koichi Anzai. "Numerical Analysis of Centrifugal Separation Behavior during Centrifugal Casting Using Particle Method." Tetsu-to-Hagane 103, no. 12 (2017): 771–79. http://dx.doi.org/10.2355/tetsutohagane.tetsu-2017-065.

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13

Kaskani, Mehdi, and Behzad Niroumand. "On Non-Dendritic Microstructure Formation during Sand Casting of A356 Alloy." Solid State Phenomena 192-193 (October 2012): 433–40. http://dx.doi.org/10.4028/www.scientific.net/ssp.192-193.433.

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The purpose of this study was to develop a new method for formation of non-dendritic microstructure during sand casting of aluminum alloys without any previous special processing. For this purpose, sand molds with three different types of running systems were designed. The first design included a traditional reverse tapered vertical sprue. The second design was similar to the first one except for a conical sand core placed inside the lower half portion of the sprue creating a narrow gap for the flow of the melt into the mold. In the third design, the core was fitted with metal chills. Molten A356 alloy was then cast from fully liquid state under gravity and centrifugal casting conditions in the molds and the microstructures of the castings were studied. The results showed that non-dendritic microstructure could be achieved by using the last design under low superheat temperature and centrifugal casting conditions. The findings can pave the way for small quantity production of semisolid castings in expendable molds.
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14

Aithal, S. Kiran, N. Ramesh Babu, H. N. Manjunath, S. Narendranath, and Vijay Desai. "Development and Characterization of Al-Si-Cu FGM Using Centrifuge Technique." Applied Mechanics and Materials 766-767 (June 2015): 438–42. http://dx.doi.org/10.4028/www.scientific.net/amm.766-767.438.

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In this work Al-Si-Cu Functionally Graded Material (FGM) is developed using centrifuge technique. The method used in this work to produce FGM is totally different compared to other centrifugal process which helped in producing solid cylindrical parts. The FGM is characterized through Microstructure and Hardness and it is found that the Cu segregated at the bottom of the casting and Si at the top due to the density difference. Similarly the hardness and the ultimate tensile strength at the bottom of the casting and at the top of the casting region is more when compared to region in-between the top and bottom of the casting.
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15

Miura-Fujiwara, Eri, Hisashi Sato, Motoko Yamada, and Yoshimi Watanabe. "Fabrication of Metal-Based Functionally Graded Grinding Wheel by a Centrifugal Mixed-Powder Method." Materials Science Forum 706-709 (January 2012): 661–66. http://dx.doi.org/10.4028/www.scientific.net/msf.706-709.661.

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Metal-bonded diamond grinding wheel was fabricated by a centrifugal mixed-powder method. The centrifugal mixed-powder method is a novel and effective casting process to obtain functionally graded material (FGM). At the beginning, we performed fundamental experiments using Al-Si alloy system for the purpose of knowing the migration behavior of mixed-powder under centrifugal force. Al-Si hypereutectic alloyed-powder or mixed-powder of Al and Si particles was placed into the mold, and then Al molten metal was cast under a centrifugal force. Cross sectional microstructure observation and quantitative analysis of Si content were conducted using an electron probe microanalyzer. Amount of Si decreased with receding from a mixed-powder region. Si concentration gradient in the sample fabricated Al-Si powder was smaller than the one fabricated using mixed-powder of Al and Si particles. Subsequently, φ 20 mm Cu/diamond grinding wheel was fabricated by the casting method. Graded diamond distribution was successfully obtained.
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16

Watanabe, Yoshimi, and Hisashi Sato. "Novel Fabrication Method of FGM Containing Nano-Particles - Centrifugal Mixed-Powder Method -." Key Engineering Materials 434-435 (March 2010): 751–56. http://dx.doi.org/10.4028/www.scientific.net/kem.434-435.751.

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One of the fabrication methods for functionally graded materials (FGMs) is a centrifugal method, which is an application of the centrifugal casting technique. In the method, a centrifugal force applied to a homogeneous molten composite assists the formation of the desired gradation. The compositional gradient is then achieved primarily by the difference in the centrifugal force produced by the difference in density between the molten metal and solid particles. The centrifugal method has the advantage that it is possible to fabricate large size products with low cost. However, disadvantage of the centrifugal method is the difficult for the gradual distribution of small particles. In this study, we proposed a novel fabrication method, centrifugal mixed-powder method, by which we can obtain FGMs containing nano-particle. On first of this processing, powder mixture of functional nano-particle and matrix material is inserted into rotating mold. After that, matrix ingot is melted in crucible and then the melt is poured into the rotating mold with powder mixture. At that time, powder of matrix material is melted by matrix melt poured from crucible. Finally, an FGM ring with functional nano-particles distributed on its surface is obtained. Using this processing method, Al-based FGMs containing TiO2 nano-particles or SiC particles on its surface were fabricated.
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17

Liu, Li Gang, Hui Yu, Yu Hui Wang, Yu Dong Yang, Cong Tao Liang, and Qiang Li. "Stress Field Simulation of Compound Cast Rollers during Centrifugal Casting Process." Applied Mechanics and Materials 217-219 (November 2012): 1740–47. http://dx.doi.org/10.4028/www.scientific.net/amm.217-219.1740.

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The stress field of compound cast rollers during centrifugal casting process was investigated in this work. A finite element (FE) model was built to simulate the internal stress fields during cooling process, in which phase transformation was considered. The mechanical parameters employed in stress numerical simulation were measured by using thermal/mechanical simulator. The residual internal stress of the compound cast roller by centrifugal casting method was measured by using X-ray stress analyzer. The simulated results are in agreement with the measured ones very well. According to this model, the temperature and stress fields of the compound cast roller during centrifugal casting process were simulated.
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18

Sato, Hisashi, Wei Wei, Kazuaki Oguri, Motoko Yamada, and Yoshimi Watanabe. "Fabrication of Self-Lubricating Cu-Based Composite Containing Graphite Particle by Centrifugal Mixed-Powder Casting." Materials Science Forum 783-786 (May 2014): 1579–84. http://dx.doi.org/10.4028/www.scientific.net/msf.783-786.1579.

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Reduction of frictional coefficient at sliding position can improve wear resistance of material. In previous studies, Cu-based composites containing graphite particles have been reported. Since graphite is better lubrication material, the Cu-based composites containing graphite particles have better wear property comparing with the pure Cu. However, these composites are mainly fabricated by sintering method and its strength is relatively low. In this study, Cu-based composites containing graphite particles are fabricated by centrifugal mixed-powder casting. The centrifugal mixed-powder casting is novel centrifugal casting method combined with powder metallurgy. Using this casting method, the Cu-based composites containing graphite particles are successfully obtained. The graphite particles are distributed in the Cu matrix and no casting defects are observed. Moreover, wear resistance of these Cu-based composites are much better than pure Cu, and the frictional coefficient between these composites and bearing steel as the counter part is reduced by dispersion of the graphite particles. Furthermore, it is found that the optimum area fraction of the graphite particles to improve the wear resistance of the present Cu-based composite is from 15% to 21%.
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19

Eidelman, E. D., and M. A. Durnev. "Surface Hardening of Composite Material by the Centrifugal-Casting Method." Technical Physics Letters 44, no. 4 (April 2018): 284–86. http://dx.doi.org/10.1134/s1063785018040041.

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20

El Hadad, Shimaa, Hisashi Sato, P. D. Sequeira, Yoshimi Watanabe, and Yoshihito Oya-Seimiya. "Effects of the Processing Temperature of Centrifugal Casting on the Mechanical Properties of Al-Al3Ti FGMs." Materials Science Forum 631-632 (October 2009): 373–78. http://dx.doi.org/10.4028/www.scientific.net/msf.631-632.373.

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Formation of the compositional gradient in FGMs fabricated by centrifugal casting method depends mainly on the processing temperature and the applied centrifugal force. According to the initial state of the dispersed second phase at the processing temperature, CCM-FGMs can be classified into two categories. One is the FGM fabricated by centrifugal solid-particle method, and the other one is the FGM made by centrifugal in-situ method. In previous study, it has been reported that microstructure of Al-Al3Ti FGMs by centrifugal in-situ method was different from that by centrifugal solid-particle method. However, difference of mechanical property due to processing method is still unclear. In this study, mechanical properties, such as hardness and wear property of Al-Al3Ti FGMs fabricated by centrifugal solid-particle method and in-situ method were evaluated.
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21

Andrushevich, A. A., A. D. Oсhotsky, and M. A. Sadokha. "Centrifugal casting – perspective technology of production of details for agricultural machines." Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY), no. 2 (August 9, 2019): 23–27. http://dx.doi.org/10.21122/1683-6065-2019-2-23-27.

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The basic requirements for cast blanks and details of agricultural machinery are considered. The prospects of using the method of centrifugal casting in the production of workpieces for the repair and maintenance of agricultural machinery in Belarus are shown. On the basis of the analysis of a number of details of the agricultural machines having the sufficient program of production the choice of the equipment for centrifugal casting of JSC BELNIILIT’s design was selected.
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22

Sato, Hisashi, Junya Maeda, Motoko Yamada, and Yoshimi Watanabe. "Effects of Particle Size on Fabrication of Al-TiO2 Functionally Graded Materials by Centrifugal Mixed-Powder Method." Materials Science Forum 879 (November 2016): 1691–97. http://dx.doi.org/10.4028/www.scientific.net/msf.879.1691.

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As one of processing methods of functionally graded materials (FGMs), centrifugal mixed-powder method has been proposed. The centrifugal mixed-powder method is the casting process combined of centrifugal casting and powder metallurgy. This processing method has advantage that fine ceramics-particles, whose wettability with matrix melt is low, can be compounded into metallic material. However, effects of particle size on microstructure and mechanical properties of the FGMs fabricated by the centrifugal mixed-powder method are unclear. In this study, two kinds of Al-TiO2 FGMs rings are fabricated by the centrifugal mixed-powder method. One contains TiO2 particles having similar diameter with Al matrix particles (hereafter, small different-size (SD) TiO2 particles), and the other one compounds TiO2 particles with much smaller diameter than Al matrix particles (hereafter, large different-size (LD) TiO2 particles). In case of the Al-TiO2 FGMs ring containing SD-TiO2 particles, the TiO2 particles are homogeneously dispersed in Al matrix on outer surface of the ring. On the other hand, the TiO2 particles in the Al-TiO2 FGMs ring with LD-TiO2 particles are distributed along grain boundary of Al matrix. Moreover, Vickers-hardness and wear resistance around outer surface of the Al-TiO2 FGMs ring containing the SD-TiO2 particles is higher than that of the Al-TiO2 FGMs ring with LD-TiO2 particles. Since Al particles in the mixed-powder with LD-TiO2 particles are surrounded by the TiO2 particles, the Al particles can be hardly melted by heat of molten Al at casting process. As a result, the Al-TiO2 FGMs ring with LD-TiO2 particles has low hardness and wear resistance. Therefore, it is found that TiO2 particles having similar diameter with Al matrix particles are more suitable for fabrication of the Al-TiO2 FGMs rings.
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23

Jeong, Jae-Il, Jong-Hyoung Kim, Si-Geun Choi, Young Tae Cho, Chan-Kyu Kim, and Ho Lee. "Mechanical Properties of White Metal on SCM440 Alloy Steel by Laser Cladding Treatment." Applied Sciences 11, no. 6 (March 22, 2021): 2836. http://dx.doi.org/10.3390/app11062836.

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The bearing is a machine element that plays an important role in rotating the shaft of a machine while supporting its weight and load. Numerous bearings have been developed to improve durability and life, depending on the functions and operating conditions in which they are desired. White metal is one of method to improve durability that is soft and bonded to the inner surface of the bearing to protect the bearing shaft. Currently, the centrifugal casting process is used as a white metal lamination method, but it involves problems such as long processing times, high defect rates and harmful health effects. In this paper, a laser cladding treatment is applied to bond powdered white metal to SCM440 alloy steel, which is used as bearing material in terms of replacing the risks of a centrifugal process. In order to understand whether laser cladding is a suitable process, this paper compares the mechanical properties of white metal produced on SCM440 alloy steel by centrifugal casting and the laser cladding process. The laser power, powder feed rate and laser head speed factors are varied to understand the mechanical properties and measure the hardness using micro Vickers and conduct field emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction and friction testing to understand the mechanical properties and surface characteristics. Based on the results, the hardness values of the cladding (white metal) layer ranged between 24 and 26 HV in both the centrifugal casting and laser cladding methods. However, the hardness of the white metal produced by laser cladding at about a depth of 0.1 mm rose rapidly in the cladding process, forming a heat-affected zone (HAZ) with an average hardness value of 200 HV at a laser power of 1.1 kW, 325 HV at 1.3 kW and 430 HV at 1.5 kW. The surface friction testing results revealed no significant differences in the friction coefficient between the centrifugal casting and laser cladding methods, which allows the assumption that the processing method does not significantly influence the friction coefficient.
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24

Zygmuntowicz, Justyna, Aleksandra Miazga, Katarzyna Konopka, Katarzyna Edrysiak, and Waldemar Kaszuwara. "Alumina matrix ceramic-nickel composites formed by centrifugal slip casting." Processing and Application of Ceramics 9, no. 4 (2015): 199–202. http://dx.doi.org/10.2298/pac1504199z.

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The paper is focused on the possibility of fabricating the alumina matrix ceramic-nickel composites with gradient concentration of metal particles. Centrifugal slip casting method was chosen for the composite fabrication. This method allows fabrication of the graded distribution of nickel particles in the hollow cylinder composites. The horizontal rotation axis was applied. The samples were characterized by XRD, SEM and quantitative description of the microstructure. The macroscopic as well as SEM observations of the prepared composites confirmed the gradient concentration of Ni particles in the composite materials. The application of the centrifugal slip casting method allows for the graded distribution of metal particles in the samples.
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25

Zhang, Q. S., D. Y. Guo, A. M. Wang, H. F. Zhang, B. Z. Ding, and Z. Q. Hu. "Preparation of bulk Zr55Al10Ni5Cu30 metallic glass ring by centrifugal casting method." Intermetallics 10, no. 11-12 (November 2002): 1197–201. http://dx.doi.org/10.1016/s0966-9795(02)00158-9.

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26

SETOGUCHI, Masataka, Yasumasa OYA, Hisashi SATO, and Yoshimi WATANABE. "Fabrication of nickel/steel multilayer pipe by reactive centrifugal casting method." Transactions of the JSME (in Japanese) 81, no. 829 (2015): 15–00245. http://dx.doi.org/10.1299/transjsme.15-00245.

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27

Arefkhani, Magid, Mansour Razavi, Mohammad Reza Rahimipour, Aida Faeghinia, and Ali Reza Firoozbakht. "Fabrication of Al–WC gradient nano-composite via centrifugal casting method." International Journal of Materials Research 110, no. 7 (July 15, 2019): 636–47. http://dx.doi.org/10.3139/146.111785.

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28

Watanabe, Yoshimi, Ken-ichi Tabushi, Hisashi Sato, Toshihiro Ito, and Yasumasa Oya. "412 Development of Eco-Centrifugal Casting Method by using Machining Chips." Proceedings of the Materials and processing conference 2009.17 (2009): _412–1_—_412–2_. http://dx.doi.org/10.1299/jsmemp.2009.17._412-1_.

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29

Bouzerara, Ferhat, Souad Boulanacer, and Abdelhamid Harabi. "Shaping of microfiltration (MF) ZrO2 membranes using a centrifugal casting method." Ceramics International 41, no. 3 (April 2015): 5159–63. http://dx.doi.org/10.1016/j.ceramint.2014.11.141.

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30

Жижкина, Наталья, and Natalya Zhizhkina. "TECHNOLOGY OPTIMIZATION FOR CENTRIFUGAL-CAST ROLL MANUFACTURING." Bulletin of Bryansk state technical university 2016, no. 2 (June 30, 2016): 143–48. http://dx.doi.org/10.12737/20269.

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This paper reports the sheet roll spun casting. It is shown that sheet rolls of required quality and with minimum production costs are manufactured through a method of spun casting on a machine with a vertical axis of a mould rotation. It is defined that at spun casting a more intensive foundry cooling occurs as a result of which a blank is characterized with a denser and more even structure of a working layer. It is revealed that the stability of such a process depends to a considerable degree upon a spin casting system functioning a significant property of which is a speed of rotation. In the paper there is analyzed a rotation speed influence upon a grain size, a quantitative ratio of structural constituents in a working layer composed of nickel-chromium cast iron and also upon the level of its properties. The analysis of the rotation speed influence of a casting mold upon a structure and a property level of a roll working surface was based on experimental investigations of foundries under industrial conditions. The microstructure (the size of primary grains, their composition) of products analyzed was estimated with the aid of a common metallographic procedure. On the basis of experiments carried out it is determined that even an insignificant increase (by 7%) of mould rotation speed during roll casting allows without expensive processing of liquid melt of a work-ing layer increasing its structure uniformity. As a result of this the level of its properties increases (hardness – by 3 units). Consequently, the increase of rolling tool efficiency is expected. The presented results of investigations are basic for works on servicing characteristics increase of spin-cast rolls.
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31

Tabushi, Kenichi, Hisashi Sato, and Yoshimi Watanabe. "Effect of Casting Condition on Density and Hardness Gradients of Al-Al2Cu Alloy FGM Fabricated by Centrifugal In Situ Method." Materials Science Forum 631-632 (October 2009): 449–54. http://dx.doi.org/10.4028/www.scientific.net/msf.631-632.449.

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Functionally graded material (FGM) is a combined material that has a component gradient from one material at one surface to another material at the opposite surface. As one of the fabrication processes of FGM, centrifugal in-situ method has been proposed. Centrifugal in-situ method is a casting that centrifugal force is applied during solidification to both the primary crystal and the matrix. In a previous study, the density and hardness gradients of Al-3mass%Cu FGM ring fabricated by centrifugal in-situ method have been investigated. According to the study, Cu concentration within the FGM ring monolithically increases towards the ring's inner position, and its density also increases toward inner region. This is because the density of the primary -Al crystal is larger than that of the molten Al-Cu alloy in the early stage of solidification. Based on this solidification process, it is considered that the casting condition and the initial Cu concentration of Al-Cu master alloy affect on the density and hardness gradients in the Al-Cu FGM ring. In this study, effects of the casting condition on the density and hardness gradients of Al-Al2Cu FGM rings fabricated by the centrifugal in-situ method were investigated. It was found that density gradient of the Al-Al2Cu FGM rings increases with increasing Cu concentration of Al-Cu master alloys. Also, processing temperature for Al-Cu master alloy can control density gradient of Al-Al2Cu FGM rings. These phenomena were explained by variation of the densities of primary -Al and the molten Al matrix during the solidification.
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32

El Hadad, Shimaa, Hisashi Sato, and Yoshimi Watanabe. "Investigation of the Mechanical Properties in Al/Al3Zr FGMs Fabricated by Centrifugal Casting Method." Materials Science Forum 631-632 (October 2009): 379–84. http://dx.doi.org/10.4028/www.scientific.net/msf.631-632.379.

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Al-5mass%Zr FGMs fabricated by centrifugal casting method (CCM) have a very interesting microstructure. Since the intermetallics compounds of Al3Zr are plate in shape, Al3Zr platelet particles are almost oriented normal to the applied centrifugal-force direction. Considering this microstructure, the mechanical properties of Al/Al3Zr FGMs would vary for the same sample depending on the particles orientation and their volume fraction in the tested position. In this study, some mechanical properties of Al/Al3Zr FGMs were investigated. Al/Al3Zr FGMs rings were produced by CCM, under applied centrifugal force of 30, 60 and 120G (units of gravity). Microstructural observation along the centrifugal force direction was carried out. The platelet Al3Zr particles were almost oriented normal to the applied centrifugal force direction. The volume-fraction of Al3Zr particles increases close to the ring surface. Moreover, this distribution range of Al3Zr particles becomes broader with decreasing the applied centrifugal force. The same distribution trends were also observed for the hardness values. The Compression tests were also performed for further investigation of the mechanical properties. Samples under G=30 showed the lowest the 0.2%proof stress while those cast under G=120 had the highest 0.2% proof stress.
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33

Zeng, Feng, Shan Yao, Zhong Fei Jiao, Shu Ming Zhao, and Tong Yang. "Study on Rapid Casting for Complex Parts." Applied Mechanics and Materials 121-126 (October 2011): 433–37. http://dx.doi.org/10.4028/www.scientific.net/amm.121-126.433.

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A rapid casting method for complex parts is presented. In this method, casting moulds with complex cavity are manufactured by self-created rapid prototyping approach which called Selected Laser Partitioning for Prototyping. After surface coating treatment for moulds, complex parts are obtained by centrifugal casting. As application cases, metal impeller was casted by this method. A self-developed five-axis coordinate measurement machine was used to process the surface measuring of impeller. The Dimension accuracy grade of impeller is CT-3 and the surface roughness is Ra 6.3µm through making comparisons directly between CAD model and point cloud data of impeller surface. The result shows that this rapid casting method which has the characters of simple technology and low production cost reaches the level of precision casting.
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34

Watanabe, Yoshimi, Kenichi Tabushi, Hisashi Sato, Toshihiro Ito, and Yasumasa Oya. "Investigation of Novel Centrifugal Casting Method Using Machining Chips by Al System." Journal of the Japan Institute of Metals 75, no. 5 (2011): 320–26. http://dx.doi.org/10.2320/jinstmet.75.320.

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35

Hirata, Naoya, Muriani Zulaida Yeni, and Koichi Yeni. "Fluid Flow and Heat Transfer Simulation of Centrifugal Casting Using Particle Method." Tetsu-to-Hagane 99, no. 2 (2013): 167–74. http://dx.doi.org/10.2355/tetsutohagane.99.167.

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36

Zygmuntowicz, Justyna, Paulina Wiecińska, Aleksandra Miazga, Katarzyna Konopka, and Waldemar Kaszuwara. "Al2O3/Ni functionally graded materials (FGM) obtained by centrifugal-slip casting method." Journal of Thermal Analysis and Calorimetry 130, no. 1 (March 4, 2017): 123–30. http://dx.doi.org/10.1007/s10973-017-6232-5.

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37

Vahdat, S. E. "Tin-Copper-Lead Alloy Produced by Horizontal Centrifugal Casting." Archives of Foundry Engineering 16, no. 1 (March 1, 2016): 131–37. http://dx.doi.org/10.1515/afe-2016-0016.

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Abstract Horizontal centrifugal casting is an effective method for the production of hollow metal with good mechanical properties, low defect, cast to size and relatively cheap. The ability of a metal to satisfy the above requirements highly depends on its microstructure. In this study, the relationship between microstructural parameters such as grain size and the amount of phases with bulk hardness of SnCu4Pb3 is concerned in three areas of the product. Consequently, to achieve the desired hardness of the product in a particular area, the interaction of two factors of the microstructure including, grain size and particles amount of the hard intermetallic compositions (Cu6Sn5) should be noted.
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38

Xu, Xin Li, and Xin Ming Zhang. "Centrifugal Processing on Aspheric Mirror Blank of Optical Glass Material." Key Engineering Materials 744 (July 2017): 404–8. http://dx.doi.org/10.4028/www.scientific.net/kem.744.404.

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The manufacturing technology of aspheric optical components is not only a difficult problem in the field of advanced optical manufacturing, but also an important symbol to measure the development level of a country's manufacturing industry. The traditional aspheric optical component processing method has the disadvantages of long processing time, large waste of materials and high processing cost. Aspherical mirror by centrifugal casting is a new processing technology. it can save a large amount of material, reduce processing time, suitable for producing various sizes of aspheric optical elements, especially in processing large size aspheric lens have obvious advantages. In this paper, the processing technology of aspherical mirror blank is introduced. Experiment with rosin, which simulation process of glass by centrifugal melt casting. The shape of the aspherical mirror is calculated by calculating. After the experiment of K9 material, the surface of optical glass is obtained. The feasibility of this method is proved by experiments. It is proved that this method can be used to manufacture aspheric mirror.
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39

Yelemessov, Kassym, Dilda Nauryzbayeva, Saiyn Bortebayev, Dinara Baskanbayeva, and Viktoriya Chubenko. "Efficiency of application of fiber concrete as a material for manufacturing bodies of centrifugal pumps." E3S Web of Conferences 280 (2021): 07007. http://dx.doi.org/10.1051/e3sconf/202128007007.

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The report presents the results of research on the use of composite material - fiber-reinforced concrete for the manufacture of centrifugal pump bodies. The, optimal composition of fiber-reinforced concrete with the required strength characteristics has been established. The method of casting a pump body and the results of industrial tests to determine the technological parameters of a centrifugal pump are presented. The results obtained showed that fiber-reinforced concrete bodies have an advantage over metal ones and can be recommended for use in mechanical engineering in the manufacture of centrifugal pump bodies.
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40

Tian, Qingle, Kai Deng, Zhishuai Xu, Ke Han, and Hongxing Zheng. "Microstructural Characterization and Mechanical Property of Al-Li Plate Produced by Centrifugal Casting Method." Metals 11, no. 6 (June 16, 2021): 966. http://dx.doi.org/10.3390/met11060966.

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Using a centrifugal casting method, along with deformation and aging, we produced a high-strength, low-anisotropy Al-Li plate. The electron probe microanalysis, transmission electron microscope, differential scanning calorimetry, and X-ray diffraction were used to clarify the evolution of strengthening phases. Experimental results showed that centrifugal-cast Al-Li plate consisted of intragrain δ′—(Al,Cu)3Li precipitate and interdendritic θ′—Al2Cu particles. After cold-rolling to a reduction ratio of 60% and annealing at 800 K for 90 min, both primary θ′ and δ′ were dissolved in solid solution. Aging at 438 K for 60 h led to the formation of two kinds of precipitates (needle-like T1—Al2CuLi and spherical δ′ in two sizes), which acted as the main strengthening phases. The average values of ultimate tensile strength and yield strength for the anneal-aged plate reached 496 MPa and 408 MPa, with a total elongation of 3.9%. The anneal-aged plate showed mechanical anisotropy of less than 5%. The tensile fracture morphology indicated a typical intergranular fracture mode.
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41

Eidel’man, E. D., and M. A. Durnev. "Design of Gradient Composites of Aluminum and Graphite by the Centrifugal-Casting Method." Technical Physics 63, no. 11 (November 2018): 1615–19. http://dx.doi.org/10.1134/s1063784218110105.

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42

Watanabe, Yoshimi, Masafumi Shibuya, and Hisashi Sato. "Fabrication of Al/Diamond Particles Functionally Graded Materials by Centrifugal Sintered-Casting Method." Journal of Physics: Conference Series 419 (March 28, 2013): 012002. http://dx.doi.org/10.1088/1742-6596/419/1/012002.

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43

SETOGUCHI, Masataka, Yasumasa OYA, Hisashi SATO, and Yoshimi WATANABA. "402 Fabrication of Nickel-Aluminides/Steel Multilayer Pipe by Reactive Centrifugal Casting Method." Proceedings of the Materials and processing conference 2013.21 (2013): _402–1_—_402–5_. http://dx.doi.org/10.1299/jsmemp.2013.21._402-1_.

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44

Bychkov, B. V., Yu V. Chernov, Al G. Shalimov, I. V. Yunakova, V. P. Chernyi, I. M. Neklyudov, and M. P. Zeidtits. "Production of a hollow semifinished product by the method of centrifugal vacuum casting." Metallurgist 33, no. 5 (May 1989): 93–94. http://dx.doi.org/10.1007/bf00811565.

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45

Эйдельман, Е. Д., and М. А. Дурнев. "Процесс кристаллизации при наличии течения." Физика твердого тела 62, no. 1 (2020): 28. http://dx.doi.org/10.21883/ftt.2020.01.48727.28ks.

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A calculation method of size distribution of heavily postcritical nucleation centers in the presence of a flow in melt or vapour for first-order phase transition, i.e., crystallization or condensation, is proposed. The considered method has been confirmed by an experimental investigation of the centrifugal casting of Al.
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46

Ogorodnikova, Olga M., V. I. Chermensky, and I. V. Konchakovsky. "Simulation of Centrifugal Casting and Structure of Fe-Ni-Co Super-Invar Alloy." Solid State Phenomena 265 (September 2017): 1142–47. http://dx.doi.org/10.4028/www.scientific.net/ssp.265.1142.

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This paper is focused on multi-scale modeling of solidification and alloy microstructure evolution through computer-aided simulation of the technological processes. Microstructure characterization of cast alloy after centrifugal casting including grain size, dendrite cell size and porosity is of interest in this paper. The centrifugal technological process was simulated using special LVMFlow program for computer-aided analysis of casting technologies to predict shrinkage porosity in axi-symmetric part blanks. The cast blanks were made of Fe-Ni-Co alloy with low thermal expansion and after turning could be used as bearing parts in contact with glass or ceramics. A method of combined simulation of technological processes and operating regimes of cast components was developed. The proposed method of simulating the complicated model allows separating the component from casting geometry in CAE postprocessor and the plot distribution of calculated parameters over the component. Also, this method allows varying diameters of hollow cylindrical casting and choosing the best location of components relative to the predicted porosity in the blank for high quality turning. The distribution of temperature and porosity could be used for more precise calculation of internal stresses in cast component under loading conditions with respect to the structural factors. The structural parameter was stated on a base of the calculated temperature fields to associate grain structure of cast alloy with solidification conditions. The austenitic microstructure of Fe-Ni-Co super-invar alloy was studied on the samples, which were cut from the axi-symmetric part after turning the blank. The calculated structural parameter was assigned with the types of grain structure.
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47

Li, Fa Gen, Bin Wei, Zhen Quan Bai, and Xue Hui Zhao. "Performance Analysis on CRA-Clad Pipes Extruded from Bimetallic Centrifugal Castings." Advanced Materials Research 287-290 (July 2011): 2288–93. http://dx.doi.org/10.4028/www.scientific.net/amr.287-290.2288.

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Recently a new method for manufacturing bimetal clad pipes is introduced, which can integrate centrifugal casting with extrusion technology organically. Through experimental study on microstructure and properties of bimetallic clad pipes manufactured by centrifugal casting and extruding, the results indicates that bimetal clad pipes with intact metallurgical interface have good bonding properties. Meanwhile wider interfacial zone will be favorable for reducing deformation stress. However there are still a few technical difficulties about the bimetallic clad pipe. Due to chemical composition and properties difference between backing materials and CRA layer, chemical elements will spread and microstructure will change during the process of production and even mechanical behavior of backing metal pipe and corrosion resistance of CRA layer will decline. To meet application requirements, appropriate heat treatment with bimetal clad pipes seems vita.
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48

Ivanov, Peter, Ivan Georgiev, and Angel Velikov. "STRUCTURAL INVESTIGATION OF A HIGH-CHROMIUM MATERIAL USED AS AN EXTERNAL, WORKING LAYER OF A BIMETALLIC MILL ROLLER." ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 1 (June 16, 2021): 91–94. http://dx.doi.org/10.17770/etr2021vol1.6534.

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The bimetallic mill roller has been produced by the method of vertical axis centrifugal casting. The processes, accompanying the formation of the structure of the external (working) layer from high chromium material of the bimetallic roller have been investigated. A mathematical model for the geometry of the working layer was created. By using the MAGMA Soft software package, simulations of the processes of casting and crystallization have been made. A metallographic assessment of the microstructure has been made.
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49

Lin, Xue Dong, Chang Ming Liu, and Jian Sun. "Fabrication of Al-Si-Mg Functional Composites Engine Cylinder and its Bench Test." Key Engineering Materials 759 (January 2018): 15–19. http://dx.doi.org/10.4028/www.scientific.net/kem.759.15.

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The centrifugal casting method was adopted to fabricate Al-25Si-8Mg functional composites tubes reinforced with in-situ particles to acquire the Al-Si-Mg composites cylinder liner which was used to produce 600 cc aluminum alloy engine cylinder for the first time through the low pressure die casting. The inner layer of the cylinder was corroded and a bench test was carried out to test the performance of the engine assembled with the cylinder. It is found that a large number of primary Si/Mg2Si particles are segregated in the inner layer of Al-25Si-8Mg tubes in the centrifugal filed, forming the particle reinforcement layer. During die-casting process, the cylinder bore needs to be filled with refractory cotton to avoid the running-out of liquid aluminum alloy. Using the Al-Si-Mg composites cylinder, the measured maximum output power and output torque of the 600 cc water-cooled engine reach 22.66 KW and 44.37 N·m, respectively. Temperature monitoring shows a reduction of 5~8 degrees than usual.
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50

Suzuki, Haruka, and Kazuhiko Iwai. "Effect of Mold Rotation Velocity on Liquid Motion in Horizontal Type Centrifugal Casting Method." Tetsu-to-Hagane 99, no. 2 (2013): 161–66. http://dx.doi.org/10.2355/tetsutohagane.99.161.

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