| 电火花沉积WC-12Co涂层单脉冲温度场数值模拟 |
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| 引用本文： | 魏红梅,初未珅,林铁松,何鹏.电火花沉积WC-12Co涂层单脉冲温度场数值模拟[J].焊接学报,2015,36(3):35-38. |
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| 作者姓名： | 魏红梅 初未珅 林铁松 何鹏 |
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| 作者单位： | 哈尔滨工业大学先进焊接与连接国家重点实验室,哈尔滨,150001 |
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| 基金项目： | 国家自然科学基金资助项目(51275135,51305102,51474081) |
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| 摘 要： | 为了确定电火花沉积WC-12Co涂层的温度场,通过选用合适的热源和热边界条件,建立电火花沉积WC-12Co涂层热传导模型.利用ANSYS有限元软件进行数值模拟,得到了电极材料及工件材料的温度等值面、温度分布曲线以及温度随时间变化曲线.通过设置温度场等值线确定了材料熔化和气化区域大小.同时文中研究了工艺参数对熔化和气化区域的影响,并预测最佳工艺参数的范围.通过电火花沉积试验验证了模拟预测结果的正确性,得到了可以获得良好沉积形貌涂层的最佳工艺参数.
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| 关 键 词： | 电火花沉积 温度场 数值模拟 工艺参数 |
| 收稿时间： | 2013/10/18 0:00:00 |
Numerical simulation of temperature field of WC-12Co coating by monopoles electro spark deposition |
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| WEI Hongmei,CHU Weishen,LIN Tiesong and HE Peng.Numerical simulation of temperature field of WC-12Co coating by monopoles electro spark deposition[J].Transactions of The China Welding Institution,2015,36(3):35-38. |
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| Authors: | WEI Hongmei CHU Weishen LIN Tiesong and HE Peng |
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| Affiliation: | WEI Hongmei;CHU Weishen;LIN Tiesong;HE Peng;State Key Laboratory of Advanced Welding and Joining,Harbin Institute of Technology; |
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| Abstract: | In order to determine the temperature field of WC-12Co coating, mathematical model of heat conduction was established by utilizing suitable heat source and the thermal boundary conditions. Numerical simulation was carried out by commercial finite element code ANSYS, and iso-surface, the temperature distribution curve and temperature variation curve were derived. The areas of melting and gasification zone were measured by setting of contour lines of temperature field. Furthermore, the influence of process parameters on the areas of melting and gasification zone was researched and the optimized process parameters were predicted. To verify the prediction, electro spark deposition experiments were carried out and the optimized process parameters were determined. |
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