| 自动化等离子堆焊技术在发动机缸体再制造中的应用 |
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| 引用本文： | 向永华,徐滨士,吕耀辉,姜祎,刘存龙,夏丹.自动化等离子堆焊技术在发动机缸体再制造中的应用[J].中国表面工程,2009,22(6). |
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| 作者姓名： | 向永华 徐滨士 吕耀辉 姜祎 刘存龙 夏丹 |
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| 作者单位： | 装甲兵工程学院,装备再制造技术国防科技重点实验室,北京,100072 |
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| 基金项目： | 国家自然科学基金，国家973计划，国防科技重点实验室基金 |
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| 摘 要： | 在构建自动化粉末等离子堆焊再制造系统的基础上,选择Ni15合金粉末为堆焊材料,通过发动机缸体止推面再制造堆焊试验对再制造系统进行了验证,并对堆焊组织进行了金相及能谱分析,表明堆焊层组织没有任何气孔、裂纹等冶金缺陷.底部能谱分析表明,底部组织由Ni、Fe中固溶Cr形成的奥氏体基体和基体上弥散分布的碳化物硬质相及其共晶组织组成,平面晶区域有明显的溶碳现象.硬度测试表明,堆焊层除熔合区因溶碳硬度较高,达200 HV,其余区域硬度值与基体相当,达130 HV.每再制造一个发动机缸体止推面,约消耗合金粉末40 g,材料成本不到20元,具有显著的节材及经济效益.
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| 关 键 词： | 再制造 粉末等离子堆焊 自动化 发动机缸体止推面 |
Application of Automatic Plasma Arc Welding Technology on Engine Cylinder Body Remanufacturing |
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| XIANG Yong-hu,XU Bin-shi,LV Yao-hui,JIANG Yi,LIU Cun-long,XIA Dan.Application of Automatic Plasma Arc Welding Technology on Engine Cylinder Body Remanufacturing[J].China Surface Engineering,2009,22(6). |
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| Authors: | XIANG Yong-hu XU Bin-shi LV Yao-hui JIANG Yi LIU Cun-long XIA Dan |
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| Affiliation: | XIANG Yong-hua,XU Bin-shi,LV Yao-hui,JIANG Yi,LIU Cun-long,XIA Dan(National Key Laboratory for Remanufacturing,Academy of Armored Forces Engineering,BeiJing 100072) |
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| Abstract: | This paper established automatic powder plasma arc welding remanufacturing system.The engine cylinder body thrust plate was remanufactured by Ni15 alloy powder,the structure of the deposited layer was analyzed by scanning electronic microscope(SEM) and energy spectrum analysis(EDS).It shows that the deposited layer is free of pore and crack flaw.EDS result on bottom of the deposited layer indicated that the structure was consist of Austenitic substrate formed by Ni,Fe,Cr solid solution and the carbide hard ... |
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| Keywords: | remanufacturing powder plasma arc welding automatic engine cylinder body thrust plate |
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