| 多次再制造中加热对基体材料性能的影响 |
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| 引用本文： | 华沂,;吴益文,;蒋海宁,;胥成民,;吉静,;李文涛,;王辰,;陈进,;孙晓明.多次再制造中加热对基体材料性能的影响[J].理化检验(物理分册),2009(9):532-534. |
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| 作者姓名： | 华沂 ;吴益文 ;蒋海宁 ;胥成民 ;吉静 ;李文涛 ;王辰 ;陈进 ;孙晓明 |
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| 作者单位： | [1]上海出入境检验检疫局工业品原材料检测技术中心,上海200135; [2]华东理工大学机械与动力工程学院失效分析中心,上海200237 |
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| 基金项目： | 国家质检公益性行业科研专项项目（2007GYJ028） |
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| 摘 要： | 以汽车曲轴用45钢为试验材料，对热轧和调质两种状态的无塑性预变形和有0．2％塑性预变形的两组材料经过不同加热次数后的力学性能和膨胀系数进行了试验研究，探讨了加法再制造中多次加热对零部件基体材料性能的影响。结果表明：无论是热轧态还是调质态，在有限的加热次数内其强度、塑性、显微组织及材料膨胀系数均无显著变化。因此可认为在有限的加热次数下加热次数对再制造坯件基体材料的性能影响可以忽略。加法再制造既未对原有材料造成新的损伤，也未改善基体材料的原有状况。
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| 关 键 词： | 再制造 多次加热 膨胀系数 |
Influence of Multiple Heat on the Performance of Matrix Material during Times of Remanufacture |
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| Affiliation: | HUA Yi, WU Yi-wen, JIANG Hai-ning, XU Cheng-min, JI Jing, LI Wen-tao, WANG Chen, CHEN Jin, SUN Xiao-ming(1. Technical Center for Industrial Products and Raw Materials Inspection and Test of Shanghai Entry-exit Inspection ＆ Quarantine Bureau, Shanghai 200135, China; 2. East China University of Science and Technology, Shanghai 200237, China) |
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| Abstract: | The influence of heating during remanufacture on the performance of matrix material wasdiscussed. 45 steel which was generally used in automobile crankshaft was tested in the experiment. Mechanicalproperties and expansion coefficient were measured respectively on hot-roIled steel and slack quench steel with andwithout 0. 2% plastic deformation. Results showed the strength, plastic property, metallurgical structure andexpansion coefficient did not change a lot after multiple heat process in all speeimens. So the influence of limitedmultiple heat process on the matrix material of remanufacture blank could be neglected. The adding remanufacture method made neither additional damage nor improvement on the original performance of the matrix material |
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| Keywords: | remanufacture multiple heat process expansion coefficient |
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