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to 0.15 mm and vacuum degree from 0.04 to 0.06 MPa, the surface alloying effect becomes better. Key words: Mg alloy; evaporative pattern casting; surface alloying layer; micro-hardness 1 Introduction... becomes incompact when the vacuum degree reaches 0.08 MPa, as shown in Fig.3(c). A conclusion is drawn that the casting infiltration driving force of metal liquid increases remarkably......
Trans. Nonferrous Met. Soc. China 22(2012) 1563-1567 Infiltration of A6063 aluminium alloy into SiC-B4C hybrid preforms using vacuum assisted block mould investment casting technique Alptekin...; accepted 5 April 2012 Abstract: Production of A6063/SiC-B4C hybrid composite using vacuum assisted block mould investment casting was investigated. Firstly, SiC-B4C hybrid preforms were fabricated......
Studies on Preparation of Onion-like Fullerenes by Vacuum Heat-treatment Wang Xiao-min1,LIU Xu-guang1,XU Bing-she1,Zhang Yan1,HOU Li-feng1 (1.College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, Shanxi, China) 摘要:Onion-like Fullerenes were produced at high-temperature in vacuum. The morphology of the carbon nano onion-like fullerenes was examined......
Flexible Furnace Concepts for Vacuum Heat Treatment Combined with High-pressure Gas Quenching Karl Ritter1,Stefan Wiebach1 (1.ALD Vacuum Technologies AG, Hanau - Germany) 摘要:IN the past five years the process combination of vacuum hardening, respectively vacuum carburizing with high-pressure gas quenching was successfully introduced to the market, especially in the manufacture of gears......
Trans. Nonferrous Met. Soc. China 24(2014) 3051-3059 Vacuum assisted high-pressure die casting of AZ91D magnesium alloy at different slow shot speeds Qing-liang WANG1,2, Shou-mei XIONG1,2 1. School... evaluated. Plate-shaped castings of AZ91D alloy were carried out on a TOYO BD-350V5 cold chamber die casting machine incorporated with a self-improved TOYO vacuum system. It was found that the vacuum......
Trans. Nonferrous Met. Soc. China 27(2017) 2529-2538 Characterization of A390 aluminum alloy produced at different slow shot speeds using vacuum assisted high pressure die casting Wen-bo YU1,2, Zi... casting machine incorporated with a self-improved TOYO vacuum system. According to the results, the vacuum pressure inside the die cavity increased linearly with the increasing slow shot speed......
Article ID: 1003-6326(2005)02-0447-05 Modeling of velocity field for vacuum induction melting process CHEN Bo(陈 波), JIANG Zhi-guo(江治国), LIU Kui(刘 奎), LI Yi-yi(李依依) (Institute of Metal... objectives. Experimental research on these aspects is limited due to the physical and chemical properties of the melts[1-6]. Most of prior researches have studied the continuous casting systems[7-11......
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The Integration of Vacuum Brazing into Heat Treatment - A Progressive Combined Process Henkjan Buursen1,Ingo Reinkensmeier2 (1.Bodycote Warmebehandlung GmbH, Diemen, Netherlands;2.Bodycote... to an independent (hybrid) technology. The use of hybrid procedures for metal joining and heat treatment of metallic materials finds more and more industrial fields of application. Modern vacuum lines......
Numerical Simulation of Vacuum Heat Treatment Thermal Hysteresis Time of GH4169 Superalloy Workpiece ZHANG Fan-yun1,WANG Ming-wei2,LI Chen-hui1,ZHANG Li-wen2,ZHANG Zun-li1,ZHANG Li-sheng1,JIANG... of vacuum heat treatment process was developed. In this model, influence of many factors, such as nonlinear heat radiation, temperature-dependent thermal physical properties of material are considered......
