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Journal articles on the topic 'Forging pressure'

Author: Grafiati

Published: 4 June 2021

Last updated: 11 February 2022

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1

Zwierzchowski, M. "Factors Affecting the Wear Resistance of Forging Tools." Archives of Metallurgy and Materials 62, no. 3 (2017): 1567–76. http://dx.doi.org/10.1515/amm-2017-0240.

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AbstractThe durability of forging tools is a function of many variables: tool heat treatment, surface quality, temperature, pressure, number of forgings, diffusion layers (nitriding) and many others. The objective of study was to analyze and compare the working conditions of forging tools. For the analysis of selected flat surfaces of tools. Analyzed forging dies subjected to normal use. Presented results of laboratory tests . The effect of temperature and time on the properties of the surface layer of forging tools. The results were compared with the literature data. This article shows the re

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2

Ma, Bao Cong, and Xiang Ke Tian. "The Application and Research on Manufacturing Technology of the Heavy Forging." Advanced Materials Research 941-944 (June 2014): 1692–95. http://dx.doi.org/10.4028/www.scientific.net/amr.941-944.1692.

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For large forging is high-tech product of material, smelting, forging, heat treatment and it is the bottleneck which restricts the development of the modern heavy equipment manufacturing industry. The key technology such as forging and heat treatment of large forgings is researched. Finally, with the ultra supercritical power generation units of low-pressure rotor, the production process control technology such as smelting, forging and heat treatment is introduced. The method provides a reliable basis for the localization of production of ultra supercritical steam turbine rotor and has the imp

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3

Choe, Kyeong Hwan, Gue Serb Cho, Kyong Whoan Lee, Ki Young Kim, and Myung Ho Kim. "Hot Forging of Semi Solidified High Strength Brass." Solid State Phenomena 116-117 (October 2006): 791–94. http://dx.doi.org/10.4028/www.scientific.net/ssp.116-117.791.

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The name “high strength brass” is given to the wrought and cast alloys indicating their particular virtue of high strength, which can be achieved by additions of Al, Fe, Mn and Sn. Forgings made from copper base alloys offer a number of advantages over products made by other processes. However, because for forging more heat must be applied to the ingot which was solidified once, there are some disadvantages in the economy of energy and time. In this study, we investigated the microstructures and mechanical properties of high strength brass made by semi solid forging and compared them with thos

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4

Wang, J., F. Gao, and Y. Zhang. "Intelligent Control of a Novel Hydraulic Forging Manipulator." Journal of Robotics 2011 (2011): 1–7. http://dx.doi.org/10.1155/2011/530247.

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The increased demand for large-size forgings has led to developments and innovations of heavy-duty forging manipulators. Besides the huge carrying capacity, some robot features such as force perception, delicacy and flexibility, forging manipulators should also possess. The aim of the work is to develop a heavy-duty forging manipulator with robot features by means of combination of methods in mechanical, hydraulic, and control field. In this paper, through kinematic analysis of a novel forging manipulator, control strategy of the manipulator is proposed considering the function and motion of f

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5

Chen, Yan, Song Wei Wang, Hong Wu Song, and Shi Hong Zhang. "Forging Process Design and Simulation Optimization of a Complex-Shaped Aluminium Alloy Component." Materials Science Forum 941 (December 2018): 784–89. http://dx.doi.org/10.4028/www.scientific.net/msf.941.784.

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In order to meet the requirements of lightweight and replace steel with the aluminum for a component on the high speed rail, the forging process of a complex-shaped aluminum alloy component was researched and the parameters were optimized with the DEFORM-3D finite element simulation technology. The qualified products were finally obtained instead of the original steel castings by reducing weight of 65%. It is noted that the parts with complicated shape and non-symmetry, metal flow uneven during forging process that lead to incomplete forming, higher forging pressure problems. In this paper, su

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6

Sadeghi, M. H. "Gear Forging: Mathematical Modeling and Experimental Validation." Journal of Manufacturing Science and Engineering 125, no. 4 (2003): 753–62. http://dx.doi.org/10.1115/1.1616952.

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A useful facility to the adaptation of precision gear forging by industry, is a quick method of load and flow predictions. In this work, the process of precision forging spur and helical gears is modeled by means of an upper bound analysis. A new velocity field, which includes bulging of the tooth form, is proposed and a computerized incremental procedure for the prediction of the bulged surface profile of the teeth, the forging load, and its increase due to corner filling is presented. The effect of workpiece/die interface friction, gear module, numbers of teeth, helix angle, gear height and

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7

Peng, Yong, Shun Cheng Wang, Hai Tao Zhou, Kai Hong Zheng, and He Xing Chen. "Microstructure and Mechanical Properties of a 6061 Aluminum Alloy Part Prepared by Casting-Forging Integrated Forming Technology." Materials Science Forum 788 (April 2014): 215–22. http://dx.doi.org/10.4028/www.scientific.net/msf.788.215.

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The effect of applied forging pressure on microstructure and mechanical properties of 6061 aluminum alloy was examined. The results showed that the ultimate tensile strength, elongation and hardness of the alloy after heat-treated treatment increase with the applied forging pressure, and the corresponding highest values, 365MPa, 11.52% and 146.53HV, were obtained at the applied forging pressure of 120MPa. Compared to casting condition without forging pressure, the ultimate tensile strength, elongation and hardness can be increased by 22.8%, 98.2% and 48.7%, respectively. The defects such as th

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8

Yang, Zhao, Guang Xu Wang, Xue Xuan Xu, Xiao Long He, and Jian Ning Lu. "Macro-Observation of the Interface of the Al-22%Si-Cu/Al-7%Si-MG Bi-Metal Parts Fabricated by Thixoforging." Solid State Phenomena 256 (September 2016): 69–74. http://dx.doi.org/10.4028/www.scientific.net/ssp.256.69.

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Thixo-forging has been proved to be able to fabricate bi-metal parts with a complex outline and a relatively regular interface economically. These products have potential applications on high volume stability radiators, brakes, and pistons. However, it is very difficult to evaluate the curved interfaces by micro observations. In this work, Al-22%Si-Cu/Al-7%Si-Mg bi-metal parts were fabricated by thixo-forging; state of the interfaces of the bi-metal parts was investigated by X-ray flaw detector observations and tensile test; optical microscope (OM) observation and scan electron microscope (SEM

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9

RAMESH KUMAR, R., and J. M. BABU. "Tensile strength Characteristics on Dissimilar Metal Friction Welding of Ti-6Al-4V & SS304L." INCAS BULLETIN 12, no. 1 (2020): 157–66. http://dx.doi.org/10.13111/2066-8201.2020.12.1.15.

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In this research, the method of friction welding joints in Titanium and Stainless Steel with aluminium interlayer coating is created. The friction welding process is a solid-state joining process of dissimilar or similar materials. This friction welding process needs high rotational speed and high forging pressure. Titanium and stainless steel materials melting temperatures are around 1600OC. Welding process which needed high-pressure, temperature and good velocity regions. Titanium and stainless steels are coated 300OC ranges to applied aluminium spray coating method with constant pressure. T

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10

Dworzak, Łukasz, Marek Hawryluk, and Marta Janik. "The Impact of the Lubricant Dose on the Reduction of Wear Dies Used in the Forging Process of the Valve Forging." Materials 14, no. 1 (2021): 212. http://dx.doi.org/10.3390/ma14010212.

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The paper presents the results of research on the influence of the settings of lubrication and cooling system parameters (solenoid valve opening time and lubricant feed pressure in terms of its quantity) in order to select the optimal lubricating conditions and thus reduce the wear of the dies used in the first forging operation of the valve forging made of high-nickel steel. Based on the observation of lubrication in the industrial process, it was found that a significant part of the lubricant fails to reach the die cavity, reaching the outside of it, which causes die wear due to seizure resu

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11

Wang, Shun Cheng, Dong Fu Song, Jing Xu, and Kai Hong Zheng. "Microstructure and Mechanical Properties of Al-1.1Mg-0.6Si-0.4Cu Alloy Manufactured by Casting-Forging Integrated Technology." Materials Science Forum 850 (March 2016): 762–67. http://dx.doi.org/10.4028/www.scientific.net/msf.850.762.

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In the present investigation the casting-forging integrated technology was adopted to manufacture Al-1.1Mg-0.6Si-0.4Cu alloy automobile brake calipers. The effect of forging pressure on the microstructure and mechanical properties of Al-1.1Mg-0.6Si-0.4Cu alloy calipers were studied. The results showed that the shrinkage porosities and cracks in the Al-1.1Mg-0.6Si-0.4Cu alloy calipers could be removed by the forging process. The ultimate tensile strength and elongation of Al-1.1Mg-0.6Si-0.4Cu alloy calipers increased with the increase of forging pressure. When the forging pressure was 120 MPa,

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12

Lecadet, J., R. Forestier, and P. Delaborde. "Advances and Breakthroughs in Titanium forgings for critical structural parts." MATEC Web of Conferences 321 (2020): 02005. http://dx.doi.org/10.1051/matecconf/202032102005.

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Assuming the high level of properties and reliability of titanium forgings, strong drivers of research and development for forgings are the pressure on cost, the buy to fly ratio reduction and the life cycle. This presentation discusses the potential of optimizations to address these challenges. The first way to concretely answer the question of the cost and of the life cycle is the recycling of manufacturing scrap and end-of-life products, using the concept of circular economy and implementing a short loop from end user to melters. This is a considerable opportunity to mitigate the risks rela

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13

Michal, Duchek, Kubina Tomas, and Konopik Pavel. "Determination of Deformation Characteristics of C38ML Microalloyed Steel." Applied Mechanics and Materials 343 (July 2013): 91–96. http://dx.doi.org/10.4028/www.scientific.net/amm.343.91.

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Thanks to their properties, microalloyed steels have found numerous applications in virtually all branches of industry. Forging plants, which supply various forged parts for automotive industry, are under substantial pressure to cut costs and reduce production times. One of potential sources of savings is reducing the forging temperature. This step requires that the deformation behaviour of feedstock materials is mapped accurately. The C38ML material was chosen for the present experiment and tested in compression in a plastometer. Test temperatures ranged from 700 °C to 1100 °C at deformation

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14

Valuev, D. V., A. V. Valueva, and A. Serikbol. "Study Cracking Large Forgings of Low Carbon Steel Grade ST52, 3N Pressure Treatment." Applied Mechanics and Materials 682 (October 2014): 64–68. http://dx.doi.org/10.4028/www.scientific.net/amm.682.64.

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The paper presents an electron-microscopic analysis of structure, phase and stress-strain state of forging material. It was found out, that dislocations in ferritic grains and pearlite layers of forgings, cracked after manufacturing processes are half as large against those in standard material. Metal in this state is characterized by an increased concentration of lamellar sulfides. It is also stated that disadvantageous structural state is formed due to high concentration of carbon which causes metal over-heating both when forming and in final heat treatment.

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15

Wen, G. D., J. L. Li, S. Q. Wang, D. Z. Tian, and M. M. Dong. "Effect of forge pressure on the microstructure and mechanical properties of high nitrogen austenitic stainless steel joints by continuous drive friction welding." International Journal of Modern Physics B 34, no. 04 (2020): 2050005. http://dx.doi.org/10.1142/s0217979220500058.

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The high nitrogen austenitic stainless steel joint was fabricated by continuous drive friction welding (CDFW). The aim of this work is to study the effect of forge pressure on the microstructure and mechanical properties of austenitic stainless steel joints. The microstructure, the hardness, and the tensile properties of joint were analyzed using optical microcopy, scanning electron microscopy (SEM), a computerized Buehler hardness tester and universal testing machine. The results showed that the welding process resulted in a remarkable microstructure change across the joint. The band [Formula

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16

Xu, Cai Ling. "Analysis of Multi-Directional Squeeze Casting Liquid Forging of Sewing Machine Oil Chassis." Applied Mechanics and Materials 397-400 (September 2013): 87–90. http://dx.doi.org/10.4028/www.scientific.net/amm.397-400.87.

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Sewing machine oil chassis is manufactured by adopting the method of multi-directional squeeze casting liquid forging. When multi-directional pressure is applied on the template, forward and radial pressures inside the solidified body are the same at each direction according to calculation and analysis. The internal pressure inside the blanks is the same, and crystal growth rate and plastic deformation are consistent at each direction, therefore solidification tissue conformation of the cast during multi-directional squeeze casting liquid forging eliminates the defects of directional differenc

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17

Jia, Xiang, Jian Sheng Liu, Hong Ping An, and Min Qin. "Forming Technology and Simulation of Large Head Forgings." Key Engineering Materials 831 (February 2020): 64–70. http://dx.doi.org/10.4028/www.scientific.net/kem.831.64.

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Head forging is an indispensable part of major technical equipment, which is required to produce high quality products because of its large volume and complex structure and long service under high temperature and high pressure. By means of DEFORM-3D numerical simulation and scaling experiment, the dynamic recrystallization dynamics model of SA508-3CL steel is established. Meanwhile, the head forming scheme is designed. The effects of different blank height-diameter ratio size, punch shape size and upper and lower die matching relationship on forging forming are emphatically analyzed. Finally,

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18

Zhao, De Ying, Lian Dong Zhang, and Hui Xue Sun. "Research on Closed Die Forging Process of Car Steering Knuckle." Materials Science Forum 575-578 (April 2008): 204–9. http://dx.doi.org/10.4028/www.scientific.net/msf.575-578.204.

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Steering knuckle, which has strict requirements with regard to dimensional precision and quality, is a key component in cars. Conventional plastic forming methods are involved with intricate procedures and high energy consumptions. Normally, a 40 MN hot die forging press or a 100 KJ electro-hydraulic hammer is required to produce the steering knuckle. Closed die forging, which is a new precision forming technology developed in recent years, has some virtues, such as good mechanical properties, easy to form and improving of metal plastic deformation. Aiming at Jetta steering knuckle in this pap

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19

Gupta, Rohit Kumar, V. Anil Kumar, Abhay R. Chauthai, and P. Ramkumar. "Development of Titanium Alloy Hemispherical Forging for Pressure Vessel of Launch Vehicle." Materials Science Forum 830-831 (September 2015): 3–6. http://dx.doi.org/10.4028/www.scientific.net/msf.830-831.3.

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Titanium alloy Ti6Al4V is used for manufacturing pressure vessels of launch vehicle in view of its excellent corrosion resistance and fabrication characteristics. This material also offers advantage of good strength to weight ratio necessary for space application. This paper describes the experience gained in the technology development of hemispherical forgings of titanium alloy Ti6Al4V. To achieve α-β microstructure and mechanical properties in the final product, hot working of the alloy from the stage of forging of cast ingots to finish working was carried out in the (α-β) region. The manufa

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20

NAKAMURA, Tamotsu. "Pressure Welding with Forging or Extrusion Process." Journal of the Japan Society for Technology of Plasticity 47, no. 544 (2006): 359–62. http://dx.doi.org/10.9773/sosei.47.359.

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21

Liu, Xiang Ru, and Xu Dong Zhou. "The Forging Penetration Efficiency of C45 Steel Stepped Shaft Radial Forging with GFM Forging Machine." Advanced Materials Research 154-155 (October 2010): 593–96. http://dx.doi.org/10.4028/www.scientific.net/amr.154-155.593.

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The numerical thermal mechanical simulation of radial forging process of C45 steel stepped shaft with GFM forging machine was carried out by three dimensional finite element method DEFORM 3D. According to effective plastic strain, mean stress and mean plastic strain distribution of the radial forging process, the forging penetration efficiency (FPE) was studied throughout. The results show that: effective plastic strain in the center of the forging is never be zero; The mean stress in the center of the workpiece is proposed to describe hydrostatic pressure in this paper. There is compressive s

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22

El-Domiaty, A., M. Shabara, and M. Al-Ansary. "Closed-Die Forging of Gear-Like Elements." Journal of Manufacturing Science and Engineering 120, no. 1 (1998): 34–41. http://dx.doi.org/10.1115/1.2830108.

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Closed die forging of spur gears is investigated using the slab method and the upper bound technique. The tooth regions are approximated by prismatic rectangular sections. The velocity field comprising three unit deformation regions is used. A constant frictional stress between workpiece and forging die is assumed. The average punch pressure normalized by the flow stress of the gear material is determined theoretically and compared with experimental results. The experimental work is carried out on a commercial pure aluminum (Al 1100) at room temperature. The forging process is carried out usin

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23

Yao, Jing, and Xiang Dong Kong. "Study on Process Control Characteristics of 22MN Fast Forging Hydraulic Press." Advanced Materials Research 201-203 (February 2011): 2258–62. http://dx.doi.org/10.4028/www.scientific.net/amr.201-203.2258.

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With the rapid development of modern industry, more and more high requirements for forging velocity and control precision have been proposed. Because it can not only increase productivity, but also can reduce the loss of the workpiece and save raw materials. Due to some characteristics such as high pressure, large flow, heavy moving inertia and so on, the process control performance of the fast forging hydraulic presses often have difficulty in their coordination between rapidity and stability, large shock during pressure relief and flow relief, low control accuracy and high accident rate. To

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24

Li, Chun, Jia Xuan Wang, and Hua Qing Miao. "The Influence of Specific Pressure on the Organization and Properties in Liquid Forging." Advanced Materials Research 430-432 (January 2012): 598–601. http://dx.doi.org/10.4028/www.scientific.net/amr.430-432.598.

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In this paper, based on the liquid forging part flange LY12, the influence of specific pressure on the organization and performance of the liquid forging part was studied through microstructure, mechanical properties and tensile fracture surface analysis methods, this article also has some guiding significance to the formulation of the best liquid forging process parameters. The results show that the tensile strength, hardness and elongation of the parts raise with the specific pressure increasing, the organization has also been significant refinement and improvement.

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Kadymov, Vagid, Evgeny Sosenushkin, and Elena Yanovskaya. "Modeling of the stamping process of box-type forging." MATEC Web of Conferences 315 (2020): 11002. http://dx.doi.org/10.1051/matecconf/202031511002.

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A new mathematical model for manufacturing rectangular of box-type forgings is proposed. Along the outer contour of the forging there are walls with thickness comparable to the thickness of the bottom part of the forging. To calculate the power parameters of the technological process under study, the authors use the theory of flow in a relatively thin plastic layer as described by A. A. Ilyushin. A thickness-averaged two-dimensional mathematical model of the plastic layer spreading process is described by nonlinear partial differential equations of the first order with respect to the contact p

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26

Janschek, Peter. "Forging of Titaniumaluminide Parts." Materials Science Forum 638-642 (January 2010): 1353–56. http://dx.doi.org/10.4028/www.scientific.net/msf.638-642.1353.

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A new material is available that displays the high temperature mechanical properties of nickel alloys at half the density –the intermetallic Titaniumaluminides. These extraordinary properties give it great potential for lightweight construction in aeroengines. The high Young’s modulus compared to common Titanium alloys offers advantages even in light weight applications, which do not need high heat resistance, e. g. connection rods. However, its characteristic rather like ceramics than metals presents a challenge in terms of forming. A forging technology has been developed with respect to this

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27

Dai, Min Qiang, Sheng Dun Zhao, and Xiao Mei Yuan. "The Application Study of Accumulator Used in Hydraulic System of 20MN Fast Forging Machine." Applied Mechanics and Materials 80-81 (July 2011): 870–74. http://dx.doi.org/10.4028/www.scientific.net/amm.80-81.870.

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Based on the description of 20MN fast forging press hydraulic system, the paper analyzed the possibility of energy conservation which the accumulator made in the fast forging machine system. When accumulator was used in fast forging machine, then analyzed the calculation results, and the energy conservation program of fast forging machine energy accumulator was evaluated briefly. The test system was set up on 20MN fast forging machine, and the paper researched the application of accumulator in fast forging press hydraulic system on absorbing hydraulic shock and eliminating pressure pulsation.

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Bae, J. W., S. M. Lee, and Chung Gil Kang. "Forging Process of Wrought Aluminum Alloy with Controlled Solid Fraction by Electromagnetic Stirring." Solid State Phenomena 141-143 (July 2008): 277–82. http://dx.doi.org/10.4028/www.scientific.net/ssp.141-143.277.

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This study demonstrates the indirect rheoforging of wrought aluminum alloys fabricated by electromagnetic stirring (EMS). EMS was carried out by varying pouring temperature of theological material and subsequently the rheo-material was forged into the sample which consisted of the direct and indirect forging part, by varying the applied forging pressure. The rheo-material completely filled the die cavity at the applied forging pressure of 150 MPa. To transfer the densification pressure to the end of the part, the applied forging pressure of over 170 MPa was necessary. To control liquid segrega

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Shahrom, Mohamad Syahmi, Ahmad Razlan Yusoff, and Mohd Amri Lajis. "Taguchi Method Approach for Recyling Chip Waste from Machining Aluminum (AA6061) Using Hot Press Forging Process." Advanced Materials Research 845 (December 2013): 637–41. http://dx.doi.org/10.4028/www.scientific.net/amr.845.637.

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This paper investigates the recycling waste aluminum alloy 6061 from high speed machine (HSM) machine using hot forging process. Hot forging process able to recover the grain structure of material by controlling certain pressure and temperature. The experiments conducted by Taguchi method design. Three factors selected are chip size, operating temperature and operating pressure with three levels for each factor. Both factors for operating temperature and pressure direct control from hot forging machine. The chip sizes are prepared from HSM machine using by three machine parameters, which are c

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Lee, Sang Kon, Hyun Sang Byun, Byung Min Kim, Dae Cheol Ko, and C. G. Kang. "Flash Design for Automatic Transfer System of Bearing Hub in Hot Forging Process." Solid State Phenomena 116-117 (October 2006): 120–23. http://dx.doi.org/10.4028/www.scientific.net/ssp.116-117.120.

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The aim of this study is to design flash geometry of bearing hub to apply the automatic transfer system in hot forging process. The flash geometry is very important in hot forging process because the flash geometry effects on the metal flow, material losses, forging load, die pressure and so on. In this study, the problem of designing the flash geometry is studied with flash thickness and width considering the maximum die pressure to apply an automatic transfer system in hot forging process for bearing hub. The numerical analysis was conducted by means of the commercial S/W DEFORM. On the basi

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Akpobi, John A., and C. O. Edobor. "Development of a Model for Analysing Forging Process." Advanced Materials Research 62-64 (February 2009): 621–28. http://dx.doi.org/10.4028/www.scientific.net/amr.62-64.621.

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This paper reports an examination of the stresses and pressure fields set up at various cross-sections of a material during forging operation by the weighted residual finite element method. We present the numerical solution to the one-dimensional differential equation which describes the pressures and stresses exerted on a forging. In conducting the analysis, we split the blank into a finite number of elements and apply the Bubnov-Galerkin weighted residual scheme to obtain the weighted integral form; the finite element model is then developed from this weighted integral form which is solved t

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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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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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33

Wang, Guilong, Jinglong Li, Weilong Wang, Jiangtao Xiong, and Fusheng Zhang. "Study on the Effect of Energy-Input on the Joint Mechanical Properties of Rotary Friction-Welding." Metals 8, no. 11 (2018): 908. http://dx.doi.org/10.3390/met8110908.

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The objective of the present study is to investigate the effect of energy-input on the mechanical properties of a 304 stainless-steel joint welded by continuous-drive rotary friction-welding (RFW). RFW experiments were conducted over a wide range of welding parameters (welding pressure: 25–200 MPa, rotation speed: 500–2300 rpm, welding time: 4–20 s, and forging pressure: 100–200 MPa). The results show that the energy-input has a significant effect on the tensile strength of RFW joints. With the increase of energy-input, the tensile strength rapidly increases until reaching the maximum value an

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Kawamoto, Kiichiro, Takeshi Yoneyama, and Masato Okada. "Back-Pressure Forging Using a Servo Die Cushion." International Journal of Automation Technology 9, no. 2 (2015): 184–92. http://dx.doi.org/10.20965/ijat.2015.p0184.

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The application of a servo die cushion to the back-pressure forging process improves the shape accuracy of forged parts. Servo die cushions have excellent performance in precise motion control and high responsiveness to set loads. To use a servo die cushion to obtain these features, back pressure is applied to the bottom outer punch during forward extrusion-type forging. Without back pressure, material flow delay around the central counter punch corner results in an unfilled corner at the bottom outer punch. Applying back pressure to the outer punch reduces the area of the unfilled corner. How

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Kawamoto, Kiichiro, Takeshi Yoneyama, Masato Okada, Satoshi Kitayama, and Junpei Chikahisa. "Optimum Back-pressure Forging Using Servo Die Cushion." Procedia Engineering 81 (2014): 346–51. http://dx.doi.org/10.1016/j.proeng.2014.10.004.

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Kim, Min-Seong, Jeong Gyun Kim, Tae Hyun Yoo, et al. "A Study on the Effect of Multi-Axial Forging Type on the Deformation Heterogeneity of AA1100 Using Finite Element Analysis." Korean Journal of Metals and Materials 59, no. 9 (2021): 624–39. http://dx.doi.org/10.3365/kjmm.2021.59.9.624.

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The effect of 3 forging routes (<bold>Route A</bold> - 1~12 passes by plane forging (PF) and reverse-plane forging (R-PF), <bold>Route B</bold> – 1~6 passes by PF and R-PF, 7~12 passes by diagonal forging (DF) and reversediagonal forging (R-DF), <bold>Route C</bold> – 1~12 passes by DF and R-DF) on maximum load to produce the workpiece, deformation heterogeneity and hydrostatic pressure distribution in AA1100 was theoretically investigated using finite element analysis (FEA). The maximum load per pass required to complete 1 cycle of the SPD process was diffe

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Dai, Huaren, Zhe Chen, Wei Guo, and Ju Wang. "Thermal simulation model of aero-engine blade material forging simulation." Thermal Science 25, no. 4 Part B (2021): 3169–77. http://dx.doi.org/10.2298/tsci2104169d.

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During the high temperature forging process, the thermal parameters such as the temperature field and strain field in the blank have an important influence on the crack damage and micro-structure in the forging. We use the rigid viscoelastic finite element method to carry out the forging process of a heavy aero-engine blade the finite element numerical simulation was carried out to obtain the temperature field, strain field and forging load change law in the forging process with time, and on this basis, combined with the crack damage and repair mechanism and the re?crystallization structure ev

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Yang, Yang, Li Wen Zhang, Zhi Zhu, and Jian Lin Zhang. "FE Simulation of Die Forging Process for High Pressure Valve Body." Advanced Materials Research 763 (September 2013): 207–10. http://dx.doi.org/10.4028/www.scientific.net/amr.763.207.

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In this paper, based on the finite element (FE) software Deform 3D, the simulation of the die forging process of a high pressure valve body was conducted. The deformation field and the metal flow field of billet were obtained and analyzed in detail. In addition, the effect of upsetting depth on the die forging process of high pressure valve body was also discussed. This study can provide a good guide for the following researches and practical industry.

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Azmi, Anugra Fikri, Yohanes Yohanes, and Ridwan Ridwan Abdurrahman. "The Study of Male-Female Chamfer Angle Effect on Aluminum 6061 Forging at Rotary Friction Welding Process." Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) 65, no. 2 (2021): 61–67. http://dx.doi.org/10.36842/jomase.v65i2.234.

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This research aims to investigate male-female chamfer angle effect on forging pressure, specimen length and the maximum tensile strength in splicing 6061 aluminum material, which used the rotary friction welding process. This research employed the analytical method to determine the timing of forging pressure as an initial reference to conduct the experimental study for the specimens test. The specimens were tested by varying the male-female chamfer angle, namely 0°, 15°, 30°, 45°, 60°. The results test were obtained the longest application of forging pressure at the male-female chamfer angle o

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Cao, Xiaoming, Jing Yao, Tong Sha, and Yu Song. "Pressure-Relief Impact Control of Open Circuit Hydraulic Pump-Controlled Forging Press System." Processes 7, no. 9 (2019): 638. http://dx.doi.org/10.3390/pr7090638.

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Taking the open circuit hydraulic pump-controlled forging press system as the research object, according to the problems of pressure-relief impact of this system, the pressure-relief rules, mathematic models of the energy release rules, and the flow release rules were established, and the pressure-relief performance in different stages of each pressure-relief curve was analyzed. Based on the different requirements of the pressure gradient decrease, the combined pressure-relief curve (CPRC) was proposed to realize variable-pump eccentric magnitude planning. An experimental study on the pressure

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Li, Ru Xiong, and Song Hua Jiao. "Thermal Coupled FEM Analysis of Precision Roll Forging Performing of Automobile Front Axle." Advanced Materials Research 557-559 (July 2012): 1330–35. http://dx.doi.org/10.4028/www.scientific.net/amr.557-559.1330.

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According to the characters, technological condition and requirements of automotive front axle forging, both the process of exact roll-forging billet and die design are studied, as the result, roll- forging die of front axle billet, pre-completed roll-forging die and final roll-forging die are design respectively, finally the groove with hat cross-section is analyzed and top pressure rolling method is proposed during blank-making roll-forging process. The precision rolling forging performing deformation process of automobile front axle is simulated with finite element software Deform-3D by usi

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Khalfallah, F., Z. Boumerzoug, S. Rajakumar, and E. Raouache. "Optimization by RSM on rotary friction welding of AA1100 aluminum alloy and mild steel." International Review of Applied Sciences and Engineering 11, no. 1 (2020): 34–42. http://dx.doi.org/10.1556/1848.2020.00005.

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AbstractThe objective of this work is to investigate the rotary friction welding of AA1100 aluminum alloy with mild steel, and to optimize the welding parameters of these dissimilar materials, such as friction pressure/time, forging pressure/time and rotational speed. The optimization of the welding parameters was deduced by applying Response Surface Methodology (RSM). An empirical relationship was also applied to predict the welding parameters. Tensile test and micro-hardness measurements were used to determine the mechanical properties of the welded joints. Some joints were analyzed by scann

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Xu, Xue Xia, Bing Zhe Bai, and Wei You. "Study on Heavy Section Forging Steel for Reactor Pressure Vessel Applying Simulation Methods." Advanced Materials Research 194-196 (February 2011): 194–200. http://dx.doi.org/10.4028/www.scientific.net/amr.194-196.194.

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The composition and heat treatment of heavy section forging steel for reactor pressure vessel were optimized applying physical and numerical simulation methods, including numerical simulation to calculate temperature distribution during quench of model forging, artificial neural network to predict CCT diagrams of steels and small sample control cooling to simulate specific heat treatment. And the influence of compositon and heat treatment on microstructure and properties were discussed. Results showed that the experimental steel obtained satisfactory properties based on optimization of chemica

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Buchmayr, Bruno, and Jürgen Elser. "High Temperature Friction and Wear Testing for Closed-Die Steel and Aluminium Forgings." Key Engineering Materials 767 (April 2018): 204–11. http://dx.doi.org/10.4028/www.scientific.net/kem.767.204.

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There are several testing methodologies to characterize the friction and wear behavior of coated or special heat treated dies and forging materials for closed-die forgings. In order to measure the friction coefficient, the wear rate, galling or fretting behavior or the effect of lubricants, three different testing types (ring compression testing, a self-made high temperature rotation tribometer and hot torsion friction) are described in detail. To meet the practical requirements, the influencing factors like temperature level, sliding speed, contact pressure and specific surface treatments or

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Zhang, Jian Lin, Li Wen Zhang, Yang Yang, and Zhi Zhu. "Simulation and Optimization of Die Forging Process for High Pressure Valve Bonnet." Advanced Materials Research 652-654 (January 2013): 2053–56. http://dx.doi.org/10.4028/www.scientific.net/amr.652-654.2053.

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In this paper, the multi-stage die forging process of a high pressure valve bonnet was simulated by 3D coupled thermal-mechanical rigid-viscoplastic finite element (FE) method. The deformation and the metal flow field of billet were obtained. Based on the simulation, two optimized schemes were put forward for improving the yield. Both of them can save material and ensure the stability of billet during the forging process. The study can provide scientific theory foundation for practical engineering applications.

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Shi, Rong Gang, Shu Jie Jiang, Zhan Yong Wang, and Xiu Ping Yan. "Hot Working Manufacturing Process of Large Mine-Used Rotary KilnRolling Ring Forgings." Applied Mechanics and Materials 496-500 (January 2014): 418–24. http://dx.doi.org/10.4028/www.scientific.net/amm.496-500.418.

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Bearing the gravity of rotary kiln barrel and the pressure between riding wheel and rolling ring, the surface defects appeared on casting large rotary kiln rolling ring, which caused large maintenance cost. While the life cycle of the rolling ring would be prolonged by using forging instead. The manufacture processing of large rotary kiln rolling ring was explored for changing casting to forging. The reasonable processing of smelting, forging and heat treatment were established.

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Chen, Dyi Cheng, Jiun Ru Shiu, and Jheng Guan Lin. "Optimization Analysis of A7075 Bicycle Stem Forging Process." Key Engineering Materials 554-557 (June 2013): 227–33. http://dx.doi.org/10.4028/www.scientific.net/kem.554-557.227.

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This research analyzes an innovative forging mold design for the various bicycle stem. The paper used the rigid-plastic finite element analysis software and structural analysis to investigate the plastic deformation behavior of aluminum alloy A7075 workpiece for forging process. Under various forging conditions, it analyses the effective strain, the effective stress, the temperature changing, surface pressure, mold radius load distribution, stress analysis of billet and mold. Moreover the paper used the Taguchi method combine the algorithm method of artificial neural network to find out the be

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Zhang, Qi, Miao Cao, Dawei Zhang, Shuai Zhang, and Jue Sun. "Research on Integrated Casting and Forging Process of Aluminum Automobile Wheel." Advances in Mechanical Engineering 6 (January 1, 2014): 870182. http://dx.doi.org/10.1155/2014/870182.

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Integrated casting and forging process (ICFP) is a new manufacturing method combining the advantages of both casting and forging. Aluminum structure parts, such as aluminum alloy automobile wheel, with complex shape and excellent mechanical properties can be produced by this process. The effects of different process parameters on the ICFP of the automobile wheel were simulated by Forge software. Microstructure of forging region and the nonforging region were studied by experiment. The results show that die temperature, static pressure of the injection piston, forging speed, and material flow h

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Anishchenko, Oleksandr S., Volodymyr V. Kukhar, and Eduard S. Klimov. "Nickel-Based Slag-Remelted Superalloy for Ti-Alloys Isothermal Forging Die-Tool." Defect and Diffusion Forum 410 (August 17, 2021): 128–35. http://dx.doi.org/10.4028/www.scientific.net/ddf.410.128.

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The work purpose is to evaluate the application of nickel-based CrNi73CuBeTeAl superalloy (tungsten-free), made by electroslag remelting as a die tool material for isothermal forming. Isothermal deformation was simulated by tests for high-temperature cyclic creep. The specimens with high and × in plan dimensions (both parallel and perpendicular to the ingots central axis) were cut from the bottom, top and central zone, near the lateral surface and in the ingots central axis area. The tests were performed at 900, 940 and 980 °C constant temperature with 100, 200 and 300 MPa cyclic pressure in 0

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Qin, Y., Y. Ma, and R. Balendra. "Mechanics of pressure-assisted injection forging of tubular components." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 218, no. 10 (2004): 1195–212. http://dx.doi.org/10.1243/0954406042369125.

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Manufacture of tubular components by pressure-assisted injection forging has several advantages over other manufacturing processes. The research conducted previously demonstrates the feasibility of using the process to produce thick-walled tubular engineering components. To improve process-analysis efficiency and to promote engineering applications of the process, an analytical algorithm was developed on the basis of a study of the mechanics of the process. Compared with forming experiments and finite element (FE) simulations, the applied-force and stress requirements calculated using the algo

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