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Effects of lubricant’s friction coefficient on warm compaction powder metallurgy LI Yuan-yuan(李元元), NGAI Tungwai Leo(倪东惠), WANG Shang-lin(王尚林), ZHU Min(朱 敏), CHEN Wei-ping(陈维平) (College... produce different lubrication effects and their optimal application temperature will be different. Three different lubricants were used to study the effects of friction coefficient on warm compaction......
Experimental investigation of friction coefficient in tube hydroforming Hyae Kyung YI 1, Hong Sup YIM 1, Gun Yeop LEE 1, Sung Mun LEE 1, Gi Suk CHUNG 2, Young-Hoon MOON 1 1. Engineering Research... Received 21 April 2010; accepted 10 September 2010 Abstract: The friction coefficient between tube and die in guide zone of tube hydroforming was obtained. In hydroforming, the tube is expanded......
that the measured K0 in secondary compression can be described by equations related to internal friction angle, secondary compression coefficient, compression index, recompression index, and sediment time...; secondary compression; internal friction angle; cementation 1 Introduction The main application of coefficient of earth pressure at rest (K0) at higher consolidation pressures is to determine earth......
Prediction and determination of both friction coefficient and forming force on sheet metal deep-drawingJunxiang Lei, Yonglin Kang, and Fangqin QuUniversity of Shanghai for Science and Technology... of the criterion of no-wrinkle, the principle and method of prediction and determination of both friction coefficient and forming force on sheet metal deep-drawing are put forward, and proved it’s......
was studied. In addition, the corresponding friction coefficient of sample was obtained through friction and wear tests. The results show that the peak clipping and the valley filling were conducted... and then decreased with the increase of the spindle speed or the feed in z-direction. As a kind of micro-process, the groove could influence the friction coefficient of sample surface, whose......
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Effect of Friction Coefficient on Deep Drawing of 6A16 Aluminum Alloy for Automobile Body刘钊扬1,2,3,熊柏青1,2,3,LI Xiwu1,2,3,YAN Lizhen1,2,3,LI Zhihui1,3,ZHANG Yongan1,2,3,LIU Hongwei1,2,31. State Key... friction coefficient ranging from 0 to 0.22. The lubricants selected for the tests were mechanical oil, butter and dry film lubricant, and the friction coefficient of these lubricants were 0.05, 0.10......
Effect of flank angle and friction coefficient on contact stress of turbine rotorWU Xiao-zan(伍晓赞), TAO Qing-bin(陶庆斌), CHEN An-ping(陈安平), XU Hui(徐慧)(1. School of Physics Science and Technology... stress appears at the chamfer below the flank, which agrees with experiment result. At the same time, the contact stress changing with the flank angle and friction coefficient was calculated......
coefficient of the composite coating against steel under dry friction test is 0.11, which is 17% lower than that obtained by traditional hardcoat anodizing. 关键词:hardcoat anodizing; aluminum alloys; c omposite coating; PTFE particles; friction coefficient; [全文内容正在添加中] ......
at different brake speeds. It shows that the coefficient of friction and wear volume are greatly influenced by brake speed. When the brake speed is 4000 r/min, which is a bit higher, the material still has a higher coefficient of friction with 0.47. When the brake speed is over 4000r/min, the coefficient of friction decreased rapidly. When the brake speed is 3000r/min, the material''s wear is in its......
