| 引用本文: | 王洪祥,张旭,高石,刘占山.1Cr13不锈钢电火花表面强化层摩擦磨损性能研究[J].材料科学与工艺,2011,19(3):56-59,65.DOI:10.11951/j.issn.1005-0299.20110311. |
| WANG Hong-xiang,ZHANG Xu,GAO Shi,LIU Zhan-shan.The friction and wear properties of strengthening layer in EDM of stainless steel 1Cr13[J].Materials Science and Technology,2011,19(3):56-59,65.DOI:10.11951/j.issn.1005-0299.20110311. |
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| 摘要: |
| 针对我国水轮机过流部件磨蚀严重这一问题,选用WC电极对水轮机叶片用1Cr13不锈钢材料进行电火花表面强化处理,对生成的强化层摩擦磨损性能进行了深入研究,并利用扫描电子显微镜和X射线衍射仪对强化层的金相组织、元素分布以及相结构进行了分析.结果表明,强化层的硬度和耐磨性明显高于工件基体,强化层的硬度在白亮层最高,而在强化层与基体的结合区硬度逐渐降低,并在热影响区达到最低.选择高硬度、高合金化的WC电极生成的电火花表面强化层,其硬度可比工件基体提高2～3倍,耐磨性能亦有显著提升. |
| 关键词: 电火花表面强化 强化层硬度 摩擦磨损性能 |
| DOI：10.11951/j.issn.1005-0299.20110311 |
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| 基金项目:哈尔滨市科技创新人才研究专项资金资助项目(2011RFXXG005) |
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| The friction and wear properties of strengthening layer in EDM of stainless steel 1Cr13 |
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WANG Hong-xiang, ZHANG Xu, GAO Shi, LIU Zhan-shan
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School of Mechanical Electrical Engineering,Harbin Institute of Technology,Harbin 150001,China
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| Abstract: |
| For the abrasion phenomenon of the turbine flowing-passage components was very serious,the electrical discharge machining(EDM) surface strengthening process of stainless steel 1Cr13 by WC electrode was carried out in this paper.The microstructure,elements distribution,and phase structure of the strengthening layer were analyzed by using scanning electron microscopy and X-ray diffraction,and the hardness and wearing resistance of the strengthening layer were studied by micro-hardness test and wear test.The results show that the hardness and wearing resistance of the strengthening layer are higher than that of the workpiece materials.The hardness in the white-bright area is highest,while that in the heat affected zone is lowest.The hardness of the EDM surface strengthening layer is 2 to 3 times of that of the workpiece matrix. |
| Key words: EDM surface hardening strengthening layer hardness friction and wear properties |
