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;Influence of deformation on rockwell hardness and electrical conductivity of cold drawing Cu-1.12%Al2O3 alloy 2.2 拉伸性能分析 Cu-1.12%Al2O3合金具有良好的冷加工能力,其热挤压棒材可以不需要中间退火而直接经多道次冷拉抜加工至规定尺寸.图2所示为热挤压态合金试样拉伸性能随冷拉抜变...冷拉抜态Cu-1.12%Al2O3合金拉伸性能的影响 Fig. 2 Influence of deformation on tensile properties of cold drawing Cu-1.12%Al2O3 alloy 2.3 显微组织分析 图3所示为不同变形量冷拉抜加工Cu-1.12%Al2O3合金的SEM像.从图3中可以看出,合金经过热挤压和冷拉抜加工后......
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copper profiles by nearly three or two times, respectively, while the CrN/a-C and TiAlN/a-C double layers cannot give any further improvements [4]. MURAKAWA et al [5] realized the semidry/dry wire drawing process for aluminum material, with improved surface precision of the drawn wire and reduction of drawing resistance, by coating the tungsten carbide dies with a layer of DLC coating. However......
Deforming mechanism of non-mandrel drawing process of circular aluminium tube by simulation QUAN Guo-zheng(权国政), ZHOU Jie(周 杰), WANG Meng-han(王梦寒), QUAN Guo-hui(权国辉), TONG Ying(佟 莹) College... be produced by non-mandrel drawing process. It is an effective method to study forming mechanism of drawing process by simulation, based on which the relevant dies with reasonable dimensions can......
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Effect of die cavity dimension onmicro U deep drawing behaviour with T2 foil WANG Chun-ju(王春举)1, GUO Bin(郭 斌)1, 2, SHAN De-bin(单德彬)1, 2 1. School of Materials Science and Engineering, Harbin...; Abstract: The strips U deep drawing experiments were carried out to study the effect of die cavity dimension with an extension machine manufactured by SANS company. The effects......
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J. Cent. South Univ. (2017) 24: 766-772 DOI: 10.1007/s11771-017-3478-9 Deep drawing of cup shell by powder cavity flexible forming technology XUE Ya-hong(薛亚红)1, CHEN Ke(陈科)1, FAN Cun-jie(范存杰)1, LUO... and the drawing ratio increases from 1.8 to 2.2. The thinning compressive stress in the bottom of cup shell emerges, which makes the bottom of the cup shell in three-dimensional stress state and the stress in punch......
THE PHYSICAL SIMULATION ON EXTRUSION PROCESS OF GLASS FIBER COMPOSITE WIRE COATED BY LEAD F.Han1,H.F.Sun1,W.B.Fang1,W.X.He1,E.D.Wang1 (1.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China) Abstract:The method of manufacturing the composite wire by extruding lead to coated glass fiber is described. The different composite wire that diameter is from......
Deep Drawing with Local Hardening on Digital Multi-axis Servo PressSebastian Kriechenbauer,Reinhard Mauermann,Dirk Landgrebe摘 要:The paper discusses a new drawing technology, based on a synchronized movement of ram and cushion with multiple bending operations in alternating directions called ‘‘bi-directional deep drawing(BDD).’’ The goal is to avoid......