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X射线测厚影响因素分析,技术进展及其在冶金工业中的应用(上)马竹梧1(1.北京市冶金自动化研究设计院)摘 要:主要叙述X射线测厚仪的工作原理,分析射线强度,统计误差以及被测物的材质,温度,表面附着水层,倾斜角度等对测厚精度的影响及其克服方法.叙述包括X射线管,检测元件,控制电路,测量方式以及计算机应用等的进展.最后介绍X射线测厚仪的组成,主要性能的实例和在国内的使用情况,说明建立X射线测厚仪产业的必要性并给出建立方法的建议.关键词:X射线测厚仪； 厚度控制； 板形......
J. Cent. South Univ. Technol. (2010) 17: 899-905 DOI: 10.1007/s11771-010-0574-5 Effects of thickness and elastic modulus on stress condition of fatigue-resistant coating under rolling contact... thicknesses and elastic modulus ratios of coating to substrate were introduced, and the effects of thickness and elastic modulus ratio on the stresses were addressed. The calculation results show......
Characteristics of shell thickness in a slab continuous casting moldDi-feng Wu1) ,Shu-sen Cheng1) ,and Zi-jian Cheng2) 1) School of Metallurgical and Ecological Engineering,University of Science... in the continuous casting process is to control shell thickness in the mold. A numerical simulation on the turbulent flow and heat transfer coupled with solidification in the slab mold using the volume......
Effect of film thickness on magnetic properties of Cr/SmCo/Cr films李宁1,李宝河2,冯春1,李明华1,于广华11. Department of Materials Physics and Chemistry,University of Science and Technology Beijing2. Department of Physics,Beijing Technology and Business University摘 要:Cr/SmCo/Cr films with different SmCo thickness were deposited on glass substrates by magnetron......
Effect of film thickness on magnetic properties of Cr/SmCo/Cr films李宁1,李宝河2,冯春1,李明华1,于广华11. Department of Materials Physics and Chemistry,University of Science and Technology Beijing2. Department of Physics,Beijing Technology and Business University摘 要:Cr/SmCo/Cr films with different SmCo thickness were deposited on glass substrates by magnetron......
Thickness of compound layer in steel-aluminum solid to liquid bondingPeng Zhang, Yunhui Du, Hanwu Liu, Shuming Xing, Daben Zeng, Jianzhong Cui, and Limin Ba1)Department of Mechanical Engineering... solidification. The surface of solid steel plate was defatted, descaled, immersed (in K2ZrF6 flux aqueous solution) and stoved. In order to determine the thickness of Fe-AI compound layer......
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under different radial pressures. Effects of radial pressure on the thickness distribution were discussed and optimal radial pressure was determined. It is shown by numerical simulations... and thickness distribution is more uniform. Key words: aluminum alloy; hydroforming; radial pressure; fracture; thickness ......
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