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-feng(张于峰), MA Hong-ting(马洪亭)(School of Environmental Engineering, Tianjin University, Tianjin 300072, China)Abstract:Thermogravimetric study of medical transfusion tube (MTT) waste containing... for the engineering.Key words:medical waste; polyvinyl chloride (PVC); medical transfusion tube (MTT); pyrolysis characteristics; model......
J. Cent. South Univ. Technol. (2011) 18: 1813-1818 DOI: 10.1007/s11771-011-0907-z Characteristics of thickness distribution of tailor-welded tube hydroforming CHU Guan-nan(初冠南)1, 2, LIU Gang(刘钢)3... Berlin Heidelberg 2011 Abstract: Both experimental and mechanical analyses were carried out to investigate the characteristics of thickness distribution for tailor-welded tube (TWT) hydroforming......
与气体间非绝热损失的存在使得脉管要达到较高的膨胀效率需采用更大的体积;脉管体积直接影响管壁和管内气体的温度分布,从而影响管壁与气体间的热损失以及气体自身温度不均匀产生的热损失;若对脉管进行一维或绝热假设忽略脉管热损失的影响,则会使脉管尺寸的设计值偏离实际最佳值.关键词:二维;非绝热;脉管体积;脉管效率Pulse tube losses mechanism based on a two...-adiabatic CFD model was proposed to study the relationship between the void volume and expansion efficiency of pulse tube at 80-300 K. The gas physical parameters were analyzed. The results show......
Microstructural Evolution of Infrared Brazed CP-Ti Using Ti-Cu-Ni BrazesT.Y.Yeh,R.K.ShiueDepartment of Materials Science and Engineering,National Taiwan University摘 要:Microstructural evolution of infrared vacuum brazed CP-Ti using two Ti-based braze alloys,Ti-15Cu-15Ni and Ti-15Cu-25Ni,has been investigated.The infrared brazed joint consisted......
Trans. Nonferrous Met. Soc. China 20(2010) s921-s925 Numerical simulation on thixo-co-extrusion of double-layer tube with A356/AZ91D WANG Kai-kun(王开坤), SUN Jian-lin (孙建林), MENG Hai-feng... Abstract: Based on analysis of the main forming methods for double-layer tube, a new short-term forming process called thixo-co-extrusion was put forward in producing double-layer tube by combining......
Mechanical property and formability of AZ31B extruded tube at elevated temperature HE Zhu-bin(何祝斌)1, LIU Gang(刘 钢)1, WU Jia(吴 佳)1, YUAN Shi-jian(苑世剑)1, LIANG Ying-chun(梁迎春)2 1...; Abstract: The mechanical properties of AZ31B magnesium alloy tube were tested by ring hoop tension test at different temperatures. The formability for tube hydroforming......
Cross-sectional distortion behaviors of thin-walled rectangular tube in rotary-draw bending process ZHAO Gang-yao(赵刚要), LIU Yu-li(刘郁丽), YANG He(杨 合), LU Cai-hong(卢彩红) College... distortion usually appears during rotary-draw bending process of thin-walled rectangular tube with small bending radius. To study the cross-sectional distortion of the tube, a three-dimensional finite......
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Special-shaped tube drawing forming and conformal optimization of die cavity QI Hong-yuan(齐红元), ZHU Heng-jun(朱衡君) School of Mechanical and Electric Control Engineering,Beijing Jiaotong University, Beijing 100044, China Received 20 April 2006; accepted 30 June 2006 Abstract: Aiming at the issues in quick processing and modeling design of drawing special-shaped tube die, by Conformal......
室温动态等径角挤压CP-Ti的变形孪晶研究冯永智,卢磊,钟政烨西南交通大学教育部先进材料与技术重点实验室摘 要:室温下运用动态等径角挤压(D-ECAP)技术实现了工业纯钛(CP-Ti)在L型模具内的高应变率剪切变形,结合电子背散射衍射(EBSD)技术研究了CP-Ti动态剧烈塑性变形过程中的孪生行为.结果表明,D-ECAP变形在CP-Ti中激发了大量的一次■孪晶,同时生成了少量的一次■孪晶.在单个晶粒内部,一次■压缩孪晶和一次■拉伸孪晶分别存在四种和两种孪晶变体,以一次■压缩孪晶和一次■拉伸孪晶为基体可进一步激发二次■孪晶以及三次■孪晶,其中二次■孪晶均存在两种孪晶变体.关键词:动态等径角挤压变形;工业纯钛;变形孪晶;......