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of extruding aluminium alloy tube without lubrication Abstract: The calculative method of pressure of metal work piece acting on arbor in the process of extruding aluminum alloy tube without lubrication was suggested, the corrective coefficient of pressure on arbor were measured. By using this method and the corrective coefficient, the accident in the process of extruding......
Study on Physical and Chemical Behaviors of Rare Earths in Preparing Ceramic Tube Supported Palladium Film by Electroless Plating Peng Jian1,Jiang Boquan1,Ye Zhiqiang1 (1.School of Environmental... into the traditional electroless plating solution to prepare thin palladium film on the inner surface of porous ceramic tube. The experimental results shows that the addition of rare earths increases......
Mechanical characteristics of fused cast basalt tube encased in steel pipe for protecting steel surface Jee-Seok WANG1, Jong-Do KIM2, Hee-Jong YOON3 1. Division of Mechanical..., it is desirable to standardize the thickness of basalt tube, thickness of mortar, diameter, inside diameter, outside diameter and thickness of mild steel pipes, flange size, location and number of bolt......
攀钢RH浸渍管粘渣原因分析与对策梁小平1,金杨1,王雨1,陈天明2,曾建华2,张敏2(1.重庆市重庆大学材料科学与工程学院2.攀枝花钢铁集团公司 钢铁研究院,四川攀枝花 617000)摘 要:针对攀钢现行工艺下发生的RH浸渍管粘渣的问题,通过实验及理论计算研究了RH浸渍管的粘渣原因及其对策.对RH浸渍管粘渣物的物相分析结果表明,RH精炼过程中高熔点的镁铝尖晶石相在熔渣中析出是导致RH浸渍管粘渣的根本原因;精炼渣组成对浸渍管粘渣影响的研究表明,提高精炼渣的碱度,增大渣中CaO/Al2O3含量比,降低渣中MgO含量......
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by fluid flowing in buried tube ZHANG Xiao-yan(张小艳)1, LIU Li(刘利)1, LIU Lang(刘浪)1, 2,LIU Lu(刘璐)3, JIA Yu-hang(贾宇航)1 1. College of Energy Science and Engineering, Xi’an University of Science... exploitation of deep mineral resources and geothermal resources to arrange the heat transfer tube in filling body. The heat release performance of filling body directly impacts on the exploiting......
J. Cent. South Univ. (2012) 19: 471-476 DOI: 10.1007/s11771-012-1027-0 Fluid flow and heat transfer characteristics of spiral coiled tube: Effects of Reynolds number and curvature ratio YOO Geun-jong...: Numerical analysis was performed to investigate flow and heat transfer characteristics in spiral coiled tube heat exchanger. Radius of curvature of the spiral coiled tube was gradually increased as total......
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and parameters optimization of preparation of AZ91D magnesium alloy semi-solid slurry by damper cooling tube method YANG Hao-qiang, XIE Shui-sheng, LI Lei, HUANG Guo-jie (State Key Laboratory for Fabrication and Processing of Non-ferrous Metals, Beijing General Research Institute for Non-ferrous Metals, Beijing 100088, China) Abstract: A new damper cooling tube method used to prepare semi-solid slurry......
J. Cent. South Univ. (2017) 24: 217-226 DOI: 10.1007/s11771-017-3422-z Numerical method and model for calculating thermal storage time for an annular tube with phase change material LIU Fan-han(刘泛函... and Technology, Kunming 650093, China Central South University Press and Springer-Verlag Berlin Heidelberg 2017 Abstract: For calculating the thermal storage time for an annular tube with phase......
