基于响应曲面法的成型CBN砂轮高频感应钎焊温度均匀性研究  

Investigation of temperature uniformity of profiled CBN grinding wheel under high frequency induction brazing based on response surface methodology

作　　者：李奇林 王西超 丁凯 雷卫宁 陈佳佳 LI Qilin;WANG Xichao;DING Kai;LEI Weining;CHEN Jiajia(School of Mechanical Engineering,Jiangsu University of Technology,Changzhou Jiangsu 213001,China;College of Electrical Engineering,Shanghai Dianji University,Shanghai 200240,China;College of Mechanical and Electrical Engineering,Nanjing Forestry University,Nanjing 210010,China)

机构地区：[1]江苏理工学院机械工程学院,江苏常州213001 [2]上海电机学院电气学院,上海200240 [3]南京林业大学机械电子工程学院,南京210010

出　　处：《航空动力学报》2022年第9期1915-1922,共8页Journal of Aerospace Power

基　　金：国家自然科学基金(51905234,51805231)。

摘　　要：成型砂轮在高频感应钎焊过程中存在温度分布不均匀导致钎焊质量无法满足使用要求,这是长期困扰超硬磨料砂轮高频感应钎焊技术的难题。针对该问题,提出温度均匀性的表征方法,以温度均匀度和平均温度为响应值,基于有限元仿真数据获得了响应曲面法模型。基于该模型,采用方差分析成型砂轮感应钎焊温度均匀性的影响因素显著程度由大到小依次为加热间隙、感应电流、导磁体长度。以平均温度值和温度均匀度为优化目标,基于响应曲面法优化线圈结构和工艺参数,开展了感应加热试验,证明响应曲面法模型优化结果的误差在6.94%以内。高频感应钎焊的成型立方氮化硼(cubic boron nitride,CBN)砂轮宏观形貌显示,钎料在成型面各处铺展的一致性好,表明钎焊过程中在成型面的温度分布具有较好的均匀性。During high frequency induction brazing of super abrasive grinding wheels, it was difficult to get a uniform temperature distribution on the grinding wheel surface, especially the profiled grinding wheel. For this problem,a characterization method of temperature uniformity was proposed. Response surface methodology model of temperature uniformity and average temperature was established based on the finite element method results. Based on this model,analysis of variance was conducted to investigate the influence factors on the temperature uniformity of profiled grinding wheel. It was found that the degrees of the influence on the temperature uniformity and average temperature from maximum to minimum were heating gap,induction current and length of magnetizer respectively. With the target of average temperature and temperature uniformity, the optimal parameters were obtained based on response surface methodology method. The experimental results verified that the error of the response surface methodology models was below 6. 94%. Finally, high frequency induction brazing of profiled cubic boron nitride(CBN) grinding wheel was carried out with the optimal parameters. A consistent brazing surface with good spread ability was observed, indicating that good temperature uniformity on the profiled surface was obtained during induction brazing.

关 键 词：温度均匀性 高频感应钎焊 成型CBN砂轮 响应曲面法 方差分析 

分 类 号：V263.1[航空宇航科学与技术—航空宇航制造工程] TG454[金属学及工艺—焊接]