刘衍聪,谢江浩,李成凯,崔兰芳,伊鹏,石永军

• 1:中国石油大学胜利学院
• 2:中国石油大学(华东)机电工程学院
• 3:国家机动车配件产品质量监督检验中心

摘要(Abstract)：

基于Maxwell方程建立含有相变过程的感应熔铸温度场模型并验证,以及以温度场模型为基础,引入流动控制方程,建立感应熔铸过程中熔池模型并分析。结果表明,熔池随电流增大而增大;频率增大并非一定使熔池增大,而存在一个极小值点;550 A时极小值出现频率约为78.5 k Hz;熔池内流场呈涡旋状且沿顺时针分布,中心接近于静止;熔池的最大流速出现在靠近交界处涂层一侧;工艺参数对熔池内流速的影响规律与对熔池大小的基本一致。涂层中存在被稀释现象,随深度增加,涂层硬度先增大后减小;对比不同粒度的涂层硬度,目数越大硬度越大,被稀释现象越明显。

关键词(KeyWords)： 感应熔铸;温度场;熔池;显微硬度;目数

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51175515);; 中央高校基本科研业务费专项资金(14CX06061A,14CX06125A);; 青岛市科技计划基础研究项目(13-1-4-255-jch)

作者(Author): 刘衍聪,谢江浩,李成凯,崔兰芳,伊鹏,石永军

DOI: 10.13289/j.issn.1009-6264.2015.03.027

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