共搜索到2195条信息，每页显示10条信息，共220页。用时：0小时0分0秒557毫秒
......
......
......
316；TG 113.2 文献标志码:A Effects of heat treatment on microstructural inhomogeneity of TG6 alloy hot die forgings WANG Tao, GUO Hong-zhen, WANG Yan-wei, YAO Ze-kun (School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, China) Abstract: TG6 alloy was forged by the hot die forging process in which the temperature......
压铸充型过程中卷气现象的数值模拟研究李帅君1,2,2,熊守美1(1.北京市清华大学机械工程系汽车安全与节能国家重点实验室2.)摘 要:采用一种液-气两相耦合模型模拟了压铸充型过程中的卷气现象,对卷入金属液中的每个气泡均单独计算其压力变化的趋势,通过压力传递将液-气两相联系在一起.为了验证模型的可靠性和准确性,开展了专门针对压铸的高速水模拟实验,并采用液-气两相耦合模型以及单相流模型分别进行了模拟,通过比较可以证实两相耦合模型在模拟卷气方面比单相流模型具有更高的精确度.关键词:压铸； 卷气； 液-气......
-weight hollow components.Uniaxial tensile test and hydrobulging test were used to investigate the formability of AZ31B magnesium tube at different temperatures.The tube was manufactured by porthole die......
; 文章编号:1672-7207(2009)05-1245-07 Analysis of influence of extrusion times on total die wear based on Archard theory LIN Gao-yong, FENG Di, ZHENG Xiao-yan, YANG Wei..., China) Abstract: Based on the fact that under discontinuous extrusion condition, former passes often have great effect on the next ones, so that the relationship between die wear of single process......
and its anisotropy becomes worse. Under the porthole die, finer and more uniform microstructure, higher mechanical properties and better anisotropy can be brought for the as-extruded AZ31 sheets. The extruded AZ31 sheets by the porthole die have better anneal process of 300℃ and 1 h. Key words: AZ31 sheet; extrusion processing; microstructure; mechanical properties ......
......
化 中图分类号:TG386.3 文献标志码:A 文章编号:1672-7207(2018)11-2692-08 Optimization of die fillet in bending process of high... of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China) Abstract: Considering that there are die failures and workpiece surface damages in sheet metal forming......
