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Статті в журналах з теми "Silicon Mould"

Автор: Grafiati

Опубліковано: 4 червня 2021

Оновлено: 1 лютого 2022

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1

Nadolski, M., Z. Konopka, M. Łągiewka, and A. Zyska. "The Influence of the Method of Mould Filling on the Quality of Castings Made of EN AC-44000 or EN AC-46200 Alloy." Archives of Foundry Engineering 14, no. 4 (2014): 73–76. http://dx.doi.org/10.2478/afe-2014-0089.

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Анотація:

Abstract The performed examinations concerning the process of filling the plaster ceramic moulds with aluminium alloys allowed to assess the influence of various methods of introducing the metal into the mould cavity on the macro- and microstructure of the obtained experimental castings. The comparison was performed for castings with graded wall thickness made either of EN AC-44000 alloy or of EN AC-46000 alloy, produced either by gravity casting, or by gravity casting with negative pressure generated around the mould (according to the Vacumetal technology), or by counter-gravity casting. It w

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2

Kumar, P., H. Lakshmi, and P. Dutta. "Solidification of A356 Alloy in a Linear Electromagnetic Stirrer." Solid State Phenomena 141-143 (July 2008): 563–68. http://dx.doi.org/10.4028/www.scientific.net/ssp.141-143.563.

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In the present work, a 2-pole linear electromagnetic stirrer (LEMS) is developed to study the effect of stirring during solidification of aluminium alloys. The stirrer design entails the placement of a stack of coils around the mold to generate a primary motion that recirculates along the longitudinal direction. The stirrer is first tested and validated by measuring the electromagnetic forces on solid aluminum cylinders of different diameters as a function of excitation current. The alloy to be stirred and solidified is placed in a cylindrical graphite mould located in the annulus of the LEMS.

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3

Hide, I., T. Yokoyama, T. Matsuyama, et al. "Mould shaping silicon crystal growth with a mould coating material by the spinning method." Journal of Crystal Growth 79, no. 1-3 (1986): 583–89. http://dx.doi.org/10.1016/0022-0248(86)90524-5.

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4

Zhang, Zhuang Ya, Hai Guang Zhang, Fu Ping Wan, Yuan Yuan Liu, and Qing Xi Hu. "ABAQUS-Based Numerical Computation and Experiment Research on Silicon Rubber Mould’s Deformation during DPVC Process." Key Engineering Materials 579-580 (September 2013): 584–89. http://dx.doi.org/10.4028/www.scientific.net/kem.579-580.584.

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Aiming at exploiting the impact of filling rate and pressure difference on thin-wall product during filling stage of differential pressure vacuum casting (DPVC) process and based on Yeoh model, a finite element mathematical structure model of silicon rubber is proposed. Employing nonlinear Finite Element Method (FEM), the impact of soft moulds deformation on products dimensional precision during different pressure difference is studied. Finally, the experiment carried out on a sample machine verifies that the solution of established finite element mathematical structure model of silicon rubber

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5

Yang, J., L. Xiao, Jian Zhong Zhou, Shu Huang, J. R. Fan, and Y. C. Dai. "Numerical Study of Vacuum Casting DVD Panel Based on Silicon Mould." Applied Mechanics and Materials 43 (December 2010): 707–11. http://dx.doi.org/10.4028/www.scientific.net/amm.43.707.

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As a new fabrication technique based on rapid prototyping, vacuum casting process can be especially used in the stage of products development. In this paper, a self-designed and made silicone mould was used to study process of vacuum casting panel part. ProCAST software was adopted to analyze the melt flowing behavior and effects of processing parameters. The key vacuum casting parameters, such as mould temperature, melt temperature, degree of vacuum and coefficient of heat transfer, on the effects of the filling rate of polymer melt were emphasized to be numerical studied. The results indicat

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6

Varga, Béla, Eva Fazakas, and L. K. Varga. "Dilatometer Study of Aluminium-Silicon Based Alloys with Metastabile Structures." Materials Science Forum 649 (May 2010): 529–32. http://dx.doi.org/10.4028/www.scientific.net/msf.649.529.

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Aluminum-Silicon alloys are sought in a large number of automotive and aerospace applications due to their low coefficient of thermal expansion and high wear resistance. The fine structure of Si precipitates is controlled by forced solid solution structure obtainable by rapidly solidification techniques [1, 2, 3]. Present study focuses on precipitation of silicon in Al88Si12 as a function of temperature by dilatometer analysis. Different structures out of equilibrium have been obtained after casting in sand, black-lead and steel mould and by melt spinning. The average value of the activation e

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7

PROKKOLA, S., and P. KIVIJÄRVI. "Effect of biological sprays on the incidence of grey mould, fruit yield and fruit quality in organic strawberry production." Agricultural and Food Science 16, no. 1 (2008): 25. http://dx.doi.org/10.2137/145960607781635886.

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Plant diseases, especially grey mould (Botrytis cinerea), may cause severe losses in organic strawberry production. In a two-year period, 20012002, the effects of different biological sprays on grey mould, the fruit yield and fruit quality of organically grown strawberry Jonsok were studied in field trials at MTT Agrifood Research Finland in Ruukki and Mikkeli. In Experiment 1 the biological sprays were seaweed, garlic and compost extracts, silicon and Trichoderma spp. on both trial sites. In Experiment 2, compost extract, Trichoderma spp. and Gliocladium catenulatum sprays were studied in

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8

Lipiński, Tomasz, and Paweł Szabracki. "Mechanical Properties of AlSi9Mg Alloy with a Sodium Modifier." Solid State Phenomena 223 (November 2014): 78–86. http://dx.doi.org/10.4028/www.scientific.net/ssp.223.78.

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Анотація:

Al–Si alloys are among the most popular casting metals. Two-component aluminium alloys with silicon are not suitable for direct use after melting. Subject to their silicon content, Al Si alloys have a coarse-grained eutectic phase, and alloys with more than 13% Si content also feature large crystallites or β-phase needles. The β-phase is hard, but also fragile. Large crystallites are good planes of division, and they reduce the mechanical properties of alloys.In this study, the Al-9% Si alloy was refined with a sodium modifier. The modifier was added to the mould by the in-mould method. The mo

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9

Jowsa, J., M. Bielnicki, and A. Cwudziński. "Physical and Numerical Investigations of Mould Flux Entrainment into Liquid Steel." Archives of Metallurgy and Materials 61, no. 4 (2016): 2043–50. http://dx.doi.org/10.1515/amm-2016-0329.

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Abstract This paper presents results of model tests, performed in order to analyze phenomenon of slag droplets entrainment into steel in mould, during continuous casting process. The carried out studies took the form of laboratory experiments using physical model, in which – using similarity criteria – the behaviour of interfacial boundary liquid steel-liquid slag has been simulated using water and silicon oils, differing in physicochemical properties. Additionally, based on PIV (Particle Image Velocimetry) measurements and numerical simulations, vector flow field and values of critical veloci

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10

Nadolski, M., Z. Konopka, M. Łągiewka, and A. Zyska. "The Influence of the Mould Filling Conditions on the Quality of Castings Made of EN AC-44000 Alloy." Archives of Foundry Engineering 14, no. 2 (2014): 19–22. http://dx.doi.org/10.2478/afe-2014-0029.

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Abstract The work deals with the influence of change in the filling conditions of the ceramic moulds with plaster binder on the presence of gaseous porosity and the microstructure of the achieved test castings with graded wall thickness. Castings made of EN AC-44000 alloy, produced either by gravity casting, or by gravity casting with negative pressure generated around the mould (according to the Vacumetal technology), or by counter-gravity casting were compared. The results of examinations concerning the density of the produced castings indicate that no significant change in porosity was foun

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11

Wong, T. I., H. Y. Ong, H. J. Lu, et al. "Wafer level silicon mould fabrication and imprinting of high density microstructures." Microelectronic Engineering 104 (April 2013): 64–68. http://dx.doi.org/10.1016/j.mee.2012.11.011.

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12

Ebrahimi, Leila, Heshmatolah Aminian, Hassan Reza Etebarian, and Navazolah Sahebani. "Control of apple blue mould disease withTorulaspora delbrueckiiin combination with Silicon." Archives Of Phytopathology And Plant Protection 45, no. 17 (2012): 2057–65. http://dx.doi.org/10.1080/03235408.2012.720772.

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13

Liu, H.-C., H. Tsuru, A. G. Cooper, and F. B. Prinz. "Rapid prototyping methods of silicon carbide micro heat exchangers." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 219, no. 7 (2005): 525–38. http://dx.doi.org/10.1243/095440505x32463.

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Анотація:

Conventional heat exchangers are mainly constructed of metal alloys. The manufacturing process of metal alloys usually requires assembling and joining techniques such as welding and diffusion bonding. In addition, the structures are limited to simple shapes due to the restrictions of the fabrication methods. This research focused on the manufacturing of compact heat exchangers made of high thermal-conductivity ceramic material, rather than on the performance of the devices. To achieve a high surface-volume ratio in heat exchangers, a strategy was adopted that fabricates miniaturized devices wi

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14

Li, Li Jun, Fei Hu Zhang, and Shen Dong. "Research on the 3-Axis CNC Ultra-Precision Grinding of Aspheric Mould." Advanced Materials Research 69-70 (May 2009): 39–43. http://dx.doi.org/10.4028/www.scientific.net/amr.69-70.39.

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Анотація:

Parallel grinding is an effective method of aspheric moulds machining which is usually made of industrial ceramic such as silicon carbide (SiC) or tungsten carbide (WC), but if the spherical grinding wheel is not being with precision truing and dressing, the roughness and form accuracy of the ground aspheric surface should get worse, for this reason, in this paper, the influence factors of thoroughness and form accuracy induced by the wheel truing and dressing are studied firstly, and a new 3-axis CNC Ultra-precision grinding system which is based on the PMAC (Programmable Multi-axes Controlle

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15

Zeng, Yi Bo, Ting Ting Wang, Jian Yan Wang, and Hang Guo. "Preparation of Strongly Hydrophobic Film with Large Area and Flexibility Based on Micro Fabrication." Key Engineering Materials 645-646 (May 2015): 195–200. http://dx.doi.org/10.4028/www.scientific.net/kem.645-646.195.

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In order to gain strongly hydrophobic film with large area and flexibility conveniently and effectively, how to prepare film with combination of technologies including micro fabrication, chemical grafting and micro molding is discussed. Firstly, micro channel arrays that the width is 5μm on the silicon wafer are prepared by micro fabrication. Then after spraying PVDF (Polyvinylidene Fluoride) lotion and pouring PDMS (Polydimethylsiloxane) glue solution onto the silicon wafer as the mould successively, the mixture need to be precured, which constructs rough structures in micro and nanoscale on

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16

Mills, Christopher A., Elena Martinez, Abdelhamid Errachid, et al. "Nanoembossed Polymer Substrates for Biomedical Surface Interaction Studies." Journal of Nanoscience and Nanotechnology 7, no. 12 (2007): 4588–94. http://dx.doi.org/10.1166/jnn.2007.18110.

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Biomedical devices are moving towards the incorporation of nanostructures to investigate the interactions of biological species with such topological surfaces found in nature. Good optical transparency and sealing properties, low fabrication cost, fast design realization times, and bio-compatibility make polymers excellent candidates for the production of surfaces containing such nanometric structures. In this work, a method for the production of nanostructures in free-standing sheets of different thermoplastic polymers is presented, with a view to using these substrates in biomedical cell-sur

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17

Kim, C. S., J. Park, W. S. Chu, D. Y. Jang, S. D. Kim, and S. H. Ahn. "Fabrication of silicon micro-mould for polymer replication using focused ion beam." Microelectronic Engineering 86, no. 4-6 (2009): 556–60. http://dx.doi.org/10.1016/j.mee.2008.12.081.

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18

Zhang, Hai Tao, Dong Tao Wang, Ke Qin, et al. "Effect of Compound Modification and Cooling Rate on Microstructure and Mechanical Properties of Al-25%Si Alloy." Materials Science Forum 877 (November 2016): 27–32. http://dx.doi.org/10.4028/www.scientific.net/msf.877.27.

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Анотація:

The effect of phosphorus on primary silicon, phosphorus and mischmetal (Ce-50La) modification on primary and eutectic silicon and cooling rate on microstructure of Al-25%Si are investigated. The results show that, with the addition of phosphorus, the size of primary silicon decreases from 93.6μm to 24.75μm. The morphology of primary silicon changes from irregular to polygonal. When Al-25%Si is modified by phosphorus and mischmetal, primary and eutectic silicon all change effectively. Addition of mischmetal on the basis of phosphorus modification have no influence to primary silicon, but it can

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19

Tkhu, Aung Khtut, and A. I. Zakharov. "The inorganic bond preparation for the coldhardening mixtures." NOVYE OGNEUPORY (NEW REFRACTORIES), no. 6 (July 26, 2018): 41–45. http://dx.doi.org/10.17073/1683-4518-2018-6-41-45.

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The sodium silicate solution (liquid glass) was prepared to be used as the inorganic bond for the cold-hardening refractory mixtures for the metal mould casting. The source of the silicon oxide was the rice production wastes namely the rice hulls. Several methods were regarded for the liquid glass synthesis and the characteristics of the obtained liquid glasses are presented.

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20

Puzio, Sabina, Jadwiga Kamińska, Michał Angrecki, and Katarzyna Major-Gabryś. "The Influence of Inorganic Binder Type on Properties of Self-Hardening Moulding Sands Intended for the Ablation Casting Process." Journal of Applied Materials Engineering 60, no. 4 (2021): 99–108. http://dx.doi.org/10.35995/jame60040008.

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Анотація:

The aim of the present work is to compare the properties of self-hardening moulding sands based on inorganic binders based on sodium silicate of different modules, geopolymer binders and phosphate binders and to prove they can be used in the ablation casting process. Ablation casting is a process in which, directly after pouring the liquid alloy, the mould is sprayed with water until it is completely eroded and a finished, cooled casting is obtained. The use of proecological water-dilutable binder makes it possible to recover the sand matrix after drying the suspension that remains after the p

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21

Ravindran, Comondore, and Sophie Lun Sin. "Effect of Silicon on the Microstructure, Tensile Properties and Hot Tearing Susceptibility of AZ91E Alloy." Materials Science Forum 706-709 (January 2012): 3046–51. http://dx.doi.org/10.4028/www.scientific.net/msf.706-709.3046.

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This Research Focused on Studying the Effect of Silicon on the Hot Tearing Susceptibility of Permanent Mould Cast AZ91E Magnesium Alloy. Varying Amounts of Silicon (0.5, 1.0 and 1.5 Wt.%) Were Added to AZ91E in the Form of an Al-53 Wt.% Si Master Alloy. the Microstructure, Grain Size and Solidification Behavior of each Alloy Were Characterized and Related to their Tensile Properties and Hot Tearing Susceptibility. the Results Showed that the Tensile Strength and the Elongation of AZ91 Alloy Decreased with the Addition of Silicon at Room Temperature, due to the Formation of Chinese Script Mg2si

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22

Mohd Khushairi, Mohd Tanwyn, Safian Sharif, and Jaafar Sidek Mohd Ani. "Evaluation of Mechanical Properties of Filled Epoxy Composite for Improving Mould Performance – A Review." Applied Mechanics and Materials 735 (February 2015): 13–18. http://dx.doi.org/10.4028/www.scientific.net/amm.735.13.

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Development of epoxy with filled particles provides an avenue for manufacturing applications in the tooling industries especially in the mould and die industries. The performance of epoxy and fillers as mould materials is greatly dependant on the production quantity and process conditions. Metal and non-metal fillers such as copper, brass, graphite and silicon carbide are blended into the epoxy matrix, altering the mechanical properties, as well as thermal conductivity of the epoxy composite. This review presents the investigation on the effect of varying composition of metal and non-metal fil

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23

Sayuti, Muhammad, Shamsuddin Sulaiman, B. T. Hang Tuah Baharudin, M. K. A. M. Arifin, Thoguluva Raghavan Vijayaram, and S. Suraya. "Effect of Mould Vibration on Mechanical Properties of Particulate Reinforced Aluminium Alloy Matrix Composite." Advanced Materials Research 445 (January 2012): 475–80. http://dx.doi.org/10.4028/www.scientific.net/amr.445.475.

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This paper focuses on the mechanical properties of Titanium Carbide (TiC) particulate reinforced aluminium-silicon alloy matrix composite subjected to mould vibration during solidification. In this experimental study, mould vibration is applied to TiC particulate reinforced LM6 alloy matrix composites with a wide range of frequencies. TiC particulate reinforced LM6 alloy matrix composites are fabricated by adding different particulate weight fraction of TiC in the matrix by carbon dioxide molding process. Mechanical properties such as tensile strength, hardness, are determined and microstructu

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24

Yang, Fan, Tielin Shi, Qiang Yu, and Guanglan Liao. "Deformation behavior of Zr65Cu17.5Ni10Al7.5 in superplastic forming with silicon mould: Simulation and application." Journal of Wuhan University of Technology-Mater. Sci. Ed. 29, no. 2 (2014): 250–55. http://dx.doi.org/10.1007/s11595-014-0903-x.

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25

Zhang, Guang An, Feng Jiang, Qi Zhou, and Fu Fa Wu. "Effect of Liquid-Die-Forging Pressure on Microstructure and Mechanical Properties of A390 Sloping Swash-Plate." Advanced Materials Research 538-541 (June 2012): 1356–59. http://dx.doi.org/10.4028/www.scientific.net/amr.538-541.1356.

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Анотація:

The effect of liquid-die-forging pressure on the microstructure and mechanical properties of A390 sloping swash-plate forming was investigated. It was found that the microstructure and comprehensive mechanical properties of the alloy were effectively improved by the liquid-die-forging pressure applied on the A390 aluminum melt. With continuous increasing of the specific pressure, the grain size of primary silicon gradually decreased, the fraction of eutectic silicon obviously decreased, and its morphology was granular mainly. When the applied pressure was 181 MPa, the size of primary silicon w

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26

Wróbel, T., J. Szajnar, D. Bartocha, and M. Stawarz. "Primary Structure and Mechanical Properties of AlSi2 Alloy Continuous Ingots." Archives of Foundry Engineering 17, no. 2 (2017): 145–50. http://dx.doi.org/10.1515/afe-2017-0066.

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AbstractThe paper presents the research results of horizontal continuous casting of ingots of aluminium alloy containing 2% wt. silicon (AlSi2). Together with the casting velocity (velocity of ingot movement) we considered the influence of electromagnetic stirring in the area of the continuous casting mould on refinement of the ingot’s primary structure and their selected mechanical properties, i.e. tensile strength, yield strength, hardness and elongation. The effect of primary structure refinement and mechanical properties obtained by electromagnetic stirring was compared with refinement obt

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27

Li, Yuan, and Yue Qiu. "Co-Deposition of Binary Particles during Slip Casting Process." Advanced Materials Research 189-193 (February 2011): 2917–20. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.2917.

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Co-deposition of silicon carbide particles and carbon (or carbon sources) particles is essential for preparation of reaction bonded silicon carbide (RBSC) products by slip casting. The way of co-depositing of silicon carbide particles and carbon particles during slip casting process, and the influence of composition of raw particles on particle co-depositing in green bodies were studied. The experiment results show: 1.Co-deposition of binary particles is greatly affected by particle size distribution, and large proportion of rigid SiC particles increases the difficulty in demoulding procedure

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28

Zhu, H. B., P. M. Wang, C. S. Wang, G. T. Yan, Y. S. Cheng, and L. M. Wu. "A Novel Thermal Insulation, Sound Absorption and Decoration Material." Advanced Materials Research 383-390 (November 2011): 3922–28. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.3922.

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Both of noise and building energy efficiency are attached importance to in the world. A novel material is developed to control noise, save building energy and decorate for buildings. Porous absorber, cavity resonator resonance sound absorber, film resonance sound absorber, functional absorber and high sound absorber are utilized to improve the sound absorbability. Perlite, Ordinary Portland cement, silicon fume, re-dispersible emulsion powder or emulsion, air-entraining agent, superplasticizer, short fiber and mesh fabrics are used to prepare novel material. Organic silicone waterproof materia

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29

Ibitoye, S. A., M. D. Shittu, and J. O. Olawale. "Grain size and porosity of cast hypoeutectic aluminium-silicon alloys in hexachloroethane coated mould." Russian Journal of Non-Ferrous Metals 51, no. 1 (2010): 62–68. http://dx.doi.org/10.3103/s1067821210010128.

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30

Puspitasari, Poppy, Okky Rachmadilla Soepriyanto, Muhammad Ilman Nur Sasongko, Johan Wayan Dika, and Andoko. "Mechanical and physical properties of aluminium-silicon (Al-Si) casting alloys reinforced by Zinc Oxide (ZnO)." MATEC Web of Conferences 204 (2018): 05003. http://dx.doi.org/10.1051/matecconf/201820405003.

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Анотація:

This study aimed to enhance the properties of aluminium-silicon (Al-Si) alloys by adding zinc oxide as a reinforcing material. This study was a type of pre-experimental design called the one-shot case study, in which sample groups subjects were given treatments and then observed. The steps included melting the aluminium-silicon in a furnace at 900° C, adding a certain amount of zinc oxide (0.05%, 0.1%, or 0.2%), stirring the mixture for 1 minute, and pouring it into a permanent mould. Results showed that, among the three specimens, the specimen reinforced with 0.2% zinc oxide had the highest t

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31

Addanki, Sambasiva Rao, Medha A. Dharap, and Jonnalagedda V. L. Venkatesh. "Development of Rapid Tooling for Investment Casting Using Fused Deposition Modeling Process." Advanced Materials Research 970 (June 2014): 155–65. http://dx.doi.org/10.4028/www.scientific.net/amr.970.155.

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Анотація:

Fused Deposition Modeling (FDM) process can be used to produce the rapid tooling directly or indirectly. However, rapid tooling application demands good surface finish since the poor surface finish of FDM parts has become a limitation for its tool application. So there is need to improve the surface finish of FDM made tools. In this study, surface roughness of FDM tools are drastically reduced by a post processing technique called chemical treatment process. Surface finish was improved by filling the gap between layers by diffusion of parent material. Thus FDM made tools can be used as direct

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32

Liang, Yong, Chong Liu, Huan Li Sun, Jing Min Li, Jun Shan Liu, and Xian Ni Gao. "Experimental Study on Hot Embossing of Micro/Nano Grating." Advanced Materials Research 60-61 (January 2009): 450–55. http://dx.doi.org/10.4028/www.scientific.net/amr.60-61.450.

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During hot embossing process of polymer MEMS devices, the parameters such as temperature, pressure and time are important for the duplication precision of patterns. In this work, a novel method of hot embossing lithography for replication of multiple nano bar structure mould was conducted. The effects of hot embossing temperature and pressure on fabrication precision were studied. Linewidth of the pattern on the mould is from 71nm to 980nm. The replicas of nano bar structure were fabricated on the PMMA (polymer methyl methacrylate) layer with silicon substrate. The effects of hot embossing and

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33

Mark, Udochukwu. "Effect of Section Size as a Measure of Cooling Rate on the Solidified Microstructure and Mechanical Properties of Sand-Cast Al-Si Eutectic Alloy." International Journal of Engineering and Technologies 18 (April 2020): 8–22. http://dx.doi.org/10.18052/www.scipress.com/ijet.18.8.

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Анотація:

Several factors contribute to the development of structure and properties of aluminiumalloy castings. This study investigated the singular effect of cooling rate on the as-cast structure andmechanical properties of an aluminum-silicon eutectic alloy, keeping other factors such as pouringtemperature, melt treatments, physical and thermal properties of the mould, and alloy compositionconstant. The rate of cooling was varied by employing different casting section sizes, based on thevariation of rate of heat extraction given by solidification time as predicted by the Chvorinov’s rule.Four test bar

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34

Zhang, Xiaoge, Qing Wang, Andrew Adamatzky, Felix T. S. Chan, Sankaran Mahadevan, and Yong Deng. "An ImprovedPhysarum polycephalumAlgorithm for the Shortest Path Problem." Scientific World Journal 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/487069.

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Shortest path is among classical problems of computer science. The problems are solved by hundreds of algorithms, silicon computing architectures and novel substrate, unconventional, computing devices. Acellular slime mouldP. polycephalumis originally famous as a computing biological substrate due to its alleged ability to approximate shortest path from its inoculation site to a source of nutrients. Several algorithms were designed based on properties of the slime mould. Many of thePhysarum-inspired algorithms suffer from a low converge speed. To accelerate the search of a solution and reduce

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35

Hussainy, Syed Ferhathullah, Mohd Viquar Mohiuddin, P. Laxminarayana, S. Sundarrajan, and A. Krishnaiah. "Analysis of Shrinkage Characteristics of Aluminium Silicon Alloy." Journal for Manufacturing Science and Production 16, no. 3 (2016): 163–71. http://dx.doi.org/10.1515/jmsp-2016-0002.

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AbstractAnalysis of shrinkage characteristics of Aluminium-Silicon alloy was studied theoretically and experimentally. The Aluminium alloys considered in the study are A413 (LM6), A360 (LM9) and A380 (LM24). Extensive literature survey has suggested that cavity filling and solidification process are two most critical aspects to produce high quality casting components. A statistical model of parameters and response to understand the influence of parameters on shrinkage and casting yield studies has been presented. Experiments were conducted in foundry in industrial environment to produce commer

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36

Niakan, Ali Asghar, M. H. Idris, Ali Ourdjini, and Majid Karimian. "Properties of Pressurized Lost Foam Casting of Al-11Si Alloy." Advanced Materials Research 383-390 (November 2011): 1730–34. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.1730.

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Lost Foam Casting, pressurized casting, solidification, mechanical properties. Abstract. The paper presents the result of investigation on aluminum-silicon (LM6) alloy cast using pressurized lost foam casting process. The study investigated the effect of pressure and sand size on hardness and roughness of the casting produced. Air pressure of 1, 2, 3 and 4 bars was applied on the solidifying alloy poured in mould of sand sized 40-60(AFS). The roughness and hardness of the casting was measured using Hobson (Surtronic 3+) and Vickers hardness testing machine respectively and reported in the aver

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37

Jamo, Hassan Usman, Mohamad Zaky Noh, and Zainal A. Ahmad. "Effect of Mould Pressure and Substitution of Quartz by Rice Husk Ash on the Bulk Density and Compressive Strength of Porcelain Body." Materials Science Forum 819 (June 2015): 134–39. http://dx.doi.org/10.4028/www.scientific.net/msf.819.134.

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RHA has become an important competitive material for preparation of silicon compounds due to high surface area, high grade of amorphous form silica and fine particle sizes. The effect of mould pressure (MP) and substitution of quartz by RHA on bulk density and compressive strength of porcelain body is investigated. RHA is used as a substitute for quartz with different replacement levels (0 wt% - 25 wt%). The samples are pressed into pellets at a mould pressure of 31 MPa, 61 MPa, 91 MPa and 121 MPa. All the pellets are sintered at the temperature of 1200 °C for 2 hours soaking time and at a hea

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38

Dolata, A. J., M. Dyzia, and S. Boczkal. "Influence of the Sr and Mg Alloying Additions on the Bonding Between Matrix and Reinforcing Particles in the AlSi7Mg/SiC-Cg Hybrid Composite." Archives of Metallurgy and Materials 61, no. 2 (2016): 651–56. http://dx.doi.org/10.1515/amm-2016-0111.

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Abstract The aim of the work was to perform adequate selection of the phase composition of the composite designated for permanent - mould casting air compressor pistons. The hybrid composites based on AlSi7Mg matrix alloy reinforced with mixture of silicon carbide (SiC) and glassy carbon (Cg) particles were fabricated by the stir casting method. It has been shown that the proper selection of chemical composition of matrix alloy and its modification by used magnesium and strontium additions gives possibility to obtain both the advantageous casting properties of composite suspensions as well as

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39

Yu, Yong Mei, Yun Bo Xu, Chang Sheng Li, and Guo Dong Wang. "Microstructure and Crystallographic Texture of Oriented Silicon Steel Produced by TSCR." Advanced Materials Research 146-147 (October 2010): 705–8. http://dx.doi.org/10.4028/www.scientific.net/amr.146-147.705.

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The microstructure and textures of oriented silicon steel produced by Thin Slab Casting and Rolling (TSCR) were studied in laboratory. The fractions of equiaxed grains and columnar grains are close to 35% and 65% respectively in as-quenched ingot after being pulled out from the mould. The equiaxed grains and no texture gradient from surface to center can be observed for the 3-pass hot-rolled strips, and the inhomogeneities of microstructure and texture in thickness are relatively clear for the 7-pass samples. The subsurface texture of the hot-rolled sample contains of e (TD// <110>) fibe

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40

Franzen, Daniel, Konrad Weiß, Joachim Gundlach, and Andreas Bührig-Polaczek. "Application of Surface Layer Inoculation Processes to Solid Solution-Strengthened Ductile Cast Iron." International Journal of Metalcasting 14, no. 4 (2020): 1041–51. http://dx.doi.org/10.1007/s40962-020-00406-5.

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Abstract Within the present investigations, an in-mould inoculation method for ductile cast iron with elevated silicon contents was developed. The inoculation process takes place at the interface between the mould’s surface and the melt. The application of a mould wall inoculation process allows inoculation at the latest possible point in time, which means high efficiency due to reduced fading effects. For this purpose, various inoculant suspensions are produced, containing inoculants in different amounts and grain fractions. The inoculant is applied to the surface of a PEP SET™-bonded mouldin

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41

Verma, Deep, P. Chandrasekhar, S. Singh, and S. Kar. "Investigations into Deformation Characteristics during Open-Die Forging of SiCp Reinforced Aluminium Metal Matrix Composites." Journal of Powder Technology 2013 (October 10, 2013): 1–14. http://dx.doi.org/10.1155/2013/183713.

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The deformation characteristics during open-die forging of silicon carbide particulate reinforced aluminium metal matrix composites (SiCp AMC) at cold conditions are investigated. The material was fabricated by liquid stir casting method in which preheated SiC particles were mixed with molten LM6 aluminium casting alloy and casted in the silicon mould. Finally, preforms obtained were machined in required dimensions. Two separate cases of deformation, that is, open-die forging of solid disc and solid rectangular preforms, were considered. Both upper bound theoretical analysis and experimental i

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42

Fatchurrohman, Nanang, and Shamsuddin Sulaiman. "Solidification Analysis in Permanent Mould Casting of Aluminium Alloy LM6 Reinforced Titanium Carbide Particulates Metal Matrix Composites." Materials Science Forum 889 (March 2017): 148–51. http://dx.doi.org/10.4028/www.scientific.net/msf.889.148.

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Permanent mould casting was used as the production technique to produce the metal matrix composites (MMCs) specimens. Thermal measurements during the casting process were recorded. Based on these data, solidification graphs were plotted to understand the solidification characteristics. Solidification analysis was performed by interpreting the parameters drawn from the solidification graphs. Parameters such as; nucleation primary alpha phase temperature, liquidus arrest temperature, eutectic growth temperature and solidification time were identified. The results showed that addition of titanium

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43

Oke, A. O., and B. V. Omidiji. "Investigation of Some Moulding Properties of a Nigerian Clay-Bonded Sand." Archives of Foundry Engineering 16, no. 3 (2016): 71–76. http://dx.doi.org/10.1515/afe-2016-0053.

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Abstract Moulding properties of Isasa River Sand bonded with Ipetumodu clay (Ife-North Local Government Area, Osun State, Nigeria) were investigated. American Foundry men Society (AFS) standard cylindrical specimens 50mm diameter and 50mm in height were prepared from various sand and clay ratios (between 18% and 32%) with 15% water content. The stress-strain curves were generated from a universal strength testing machine. A flow factor was calculated from the inclination of the falling slope beyond the maximum compressive strength. The result shows that the flowability of the samples increases

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44

Li, Shi Bin, Jie Guang Song, and Hong Ying Ru. "Preparation and Properties of In Situ Formed YAG Bonded Porous SiC Ceramics." Key Engineering Materials 602-603 (March 2014): 403–6. http://dx.doi.org/10.4028/www.scientific.net/kem.602-603.403.

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Yttrium aluminium garnet (YAG) possesses many good properties, and usually uesd as sintering additives for silicon carbide ceramics. The YAG precursor solution was preformed by the coprecipitation process, then 8wt% prepared precursor solution was added and uesed as binder for samples' green bodies dry mould pressing. The dried pressed samples were directly sintered at 1850¡æ under vaccum atmosphere, and the precursor Al2O3-Y2O3 could be formed YAG during sintering process. The oxidation resistance property was performed at 1500¡æ in air. Bulk density and porosity were about 2.42g/cm3 and 24.9

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45

Trytek, A., A. W. Orłowicz, M. Tupaj, et al. "The Effect of a Thin-Wall Casting Mould Cavity Filling Conditions on the Casting Surface Quality." Archives of Foundry Engineering 16, no. 4 (2016): 222–26. http://dx.doi.org/10.1515/afe-2016-0113.

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Abstract The paper presents results of metallographic examination of faults occurring in the course of founding thin-walled cast-iron castings in furan resin sand molds. A non-conformance of the scab type was Observed on surface of the casting as well as sand buckles and cold shots. Studied the chemical composition by means of a scanning electron microscope in a region of casting defects: microanalysis point and microanalysis surface. Around the observed defects discloses high concentration of oxides of iron, manganese and silicon. A computer simulation of the casting process has been carried

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46

Eperješi, Š., M. Matvija, ľ. Eperješi, and M. Vojtko. "Evaluation of Cracking Causes of AlSi5Cu3 Alloy Castings." Archives of Metallurgy and Materials 59, no. 3 (2014): 1089–92. http://dx.doi.org/10.2478/amm-2014-0187.

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Abstract Recently, the castings made from aluminum-silicon alloys by pressure die casting are increasingly used in the automotive industry. In practice, on these castings are high demands, mainly demands on quality of their structure, operating life and safety ensuring of their utilization. The AlSi5Cu3 alloy castings are widely used for production of car components. After the prescribed tests, the cracks and low mechanical properties have been identified for several castings of this alloy, which were produced by low pressure casting into a metal mould and subsequent they were heat treated. Th

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47

Seo, Yuan Sieng, Laila Masrur Mohd Nasir, Hussain Zuhailawati, and Anasyida Abu Seman. "Microstructure Evolution of Conventional and Semi-Solid A356 Alloy with Addition of Strontium." Advanced Materials Research 1087 (February 2015): 488–92. http://dx.doi.org/10.4028/www.scientific.net/amr.1087.488.

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In this study, modification of aluminium silicon eutectic alloy by grain modifier, strontium was investigated on conventional and slope cast A356 alloy. A356 alloy with addition of 0 to 0.97 wt.% Sr was prepared by conventional and slope casting in melting furnace. The molten metal of A356 alloy was casted into steel mould. Microstructure was observed using SEM. Phase analysis was done using XRD. Microhardness was conducted using Vicker microhardness. Microstructure of conventional cast displayed dendritic structure whereas slope cast displayed globular structure. Addition of Sr refined eutect

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Kurokawa, Syuhei, Morihisa Hoga, and Toshiro Doi. "Nanomanufacturing of radial grating patterns by nanoimprint with a silicon mould for rotational angle measurement of micro gears." International Journal of Nanomanufacturing 8, no. 1/2 (2012): 123. http://dx.doi.org/10.1504/ijnm.2012.044660.

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49

Antohe, Magda Ecaterina, Doriana Forna, and Norina Consuela Forna. "Researches Regarding the Biomechanics Behaviour of some Impressions Biomaterials Used in Dentistry." Key Engineering Materials 614 (June 2014): 144–47. http://dx.doi.org/10.4028/www.scientific.net/kem.614.144.

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The dimensional stability of impression materials is a variable with an impact on the accuracy of dental prostheses; alongside with other factors including the modifications occurred during the material preparation or the impression techniques. The study was based on a laboratory simulation of a clinical situation. The impression materials were: Alginate; Addition silicon materials-AFFINIS and FLEXITIME; Condensation silicon materials-SPEEDEX and OPTOSIL; Polyvinyl siloxane materials-EXPRESS. The impressions were taken at 37 ̊C at 100 per cent humidity and mould in IV class gypsum at intervals

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Kuo, Chil Chyuan, Ying Jie Wang, and Zhong Sheng Shi. "Development of a High Precision Silicone Rubber Mold for Cylinder Block." Applied Mechanics and Materials 459 (October 2013): 342–48. http://dx.doi.org/10.4028/www.scientific.net/amm.459.342.

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This work demonstrates a technique for producing accurate wax patterns made from a high precision silicone rubber mold. Silicon rubber mold was cut into five components, which is the minimum number of components for assembling the silicone rubber mold. The advantages of this silicon rubber mold include savings in assembly time, reduction of human error while assembling the silicone rubber mold and good assembly precision. The shrinkage of critical dimensions can be controlled within 2.19%. Results reported here can speed up the velocity in the development of a new cylinder block in the motorcy

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