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STUDY ON DESIGN TECHNIQUES OF A LONG LIFE HOT FORGING DIE WITH MULTI-MATERIALS H.C. Wang1,X.J. Liu1,D.W. Li1 (1.School of Materials Science and Engineering, Wuhan University of Technology,Wuhan 430070, China) Abstract:A new design technique for the long life hot forging die has been proposed. By finite elementanalysis, the reason for the failure of hot forging die was analyzed......
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MODELING OF MICROSTRUCTURAL EVOLUTION IN MICROALLOYED STEEL DURING HOT FORGING PROCESS Z. Zhao1,J. Chen1,X.Y. Ruan1,J. Wang1 (1.National Die & Mold CAD Engineering Research Center, Shanghai Jiaotong University, Shanghai 200030, China) Abstract:The microstructural evolution of microalloyed steel during hot forging process was investigated using physical simulation experiments. The dynamic......
Carbide Coating Preparation of Hot Forging Die by Plasma Processing杜文华School of Mechanical Engineering and Automation, North University of China摘 要:To meet the performance requirements of hot forging die heat resistant layer, the Ni60-SiC coating, Ni60-Cr3C2 coating, and Ni60-WC coating were prepared using W6Mo5Cr4V2 as substrate material with 30%SiC......
J. Cent. South Univ. Technol. (2008) 15: 1-5 DOI: 10.1007/s11771-008-0001-3 Prediction of grain size for large-sized aluminium alloy 7050 forging during hot forming YI You-ping(易幼... methods to simulate the forging process[5-6]. Much work in simulating the microstructure evolution during hot deformation has been done within a wide range of metals and alloys[7-10]. However, few......
Defect analysis of complex-shape aluminum alloy forging SHAN De-bin(单德彬), ZHANG Yan-qiu(张艳秋), WANG Yong(王 勇), XU Fu-chang(徐福昌), XU Wen-chen(徐文臣), L? Yan(吕 炎) School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China Received 28 July 2006; accepted 15 September 2006 Abstract: The isothermal precision forging was applied for the purpose of forming......
Effect of Zn/Mg/Cu Additions on Hot Cracking Tendency and Performances of Al-Cu-Mg-Zn Alloys for Liquid Forging孙永根1,杜之明1,SU Yanni2,CHENG Yuansheng2,LIU Yongwang21. National Key Laboratory... the process of liquid forging, a host of hot cracking defects were found in the Al-CuMg-Zn aluminum alloy. Therefore, mechanical tests and analyses by optical microscope, scanning electron microscope, and X......
Tempering stability of Fe–Cr–Mo–W–V hot forging die steelsYuan-ji Shi,Xiao-chun Wu,Jun-wan Li,Na MinSchool of Materials Science and Engineering, Shanghai University摘 要:The tempering stability of three Fe–Cr–Mo–W–V hot forging die steels(DM, H21, and H13) was investigated through hardness measurements and transmission electron microscopy(TEM......
, and excellent material properties [1-3]. In addition, hot radial forging process can be used to produce large diameter tubes having thick walls, such as automobile hollow shafts. Automobile hollow shafts... fatigue life and increased holes and cracks [13]. To investigate the homogeneity during hot radial forging of the hollow stepped shaft, five cross-sections were selected because of their different......
for numerical simulation of hot forging. Key words: microalloyed forging steel; flow stress; dynamic recovery; dynamic recrystallization; Zener-Hollomon parameter 1 Introduction During hot working... to support research and production of hot rolling[2-6], but less attention was paid to hot forging process, especially for microalloyed forging steels. Microalloyed forging steels are widely being......