铝合金机壳低压铸造型芯感应加热研究及应用
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摘要
基于电磁感应加热能实现不直接接触即可以进行快速加热的特点,研究用感应线圈将电动汽车铝合金机壳圆柱型芯快速加热到预热温度的方法,以增强低压铸造铝合金液的充型流动性,预防铸件结晶凝固过程中缩孔等缺陷产生。通过计算,确定感应线圈加热参数及匝数,并运用ANSYS软件对电磁加热型芯的过程进行有限元温度场分析,为温度控制及感应加热提供精确的工艺参数,也为选择合理的低压铸造型芯加热工艺方案提供技术参考。
According to the characteristics of electromagnetic induction heating,the coil can be heated quickly without contacting with the material.Based on the above mentioned features,a method on how to rapidly heat the cylindrical core of aluminum alloy housings for electric vehicle was put forward to preheating temperature by electromagnetic induction coil.This method can enhance the filling fluidity of the low pressure casting aluminum alloy,and prevent defects such as shrinkage cavities in the solidification process.The heating parameters and turns of induction coil were determined by calculation,and the finite element temperature field analysis was carried out to analyze the process of the electromagnetic heating core by using ANSYS software,so as to provide accurate technological parameters for temperature control and induction heating and technical basis for selecting reasonable heating process for low pressure casting core.
According to the characteristics of electromagnetic induction heating,the coil can be heated quickly without contacting with the material.Based on the above mentioned features,a method on how to rapidly heat the cylindrical core of aluminum alloy housings for electric vehicle was put forward to preheating temperature by electromagnetic induction coil.This method can enhance the filling fluidity of the low pressure casting aluminum alloy,and prevent defects such as shrinkage cavities in the solidification process.The heating parameters and turns of induction coil were determined by calculation,and the finite element temperature field analysis was carried out to analyze the process of the electromagnetic heating core by using ANSYS software,so as to provide accurate technological parameters for temperature control and induction heating and technical basis for selecting reasonable heating process for low pressure casting core.
引文
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[2]宋秀玲,李步德.低压铸造智能控制系统的设计[J].铸造技术,2015,36(1):221-233.
[3]宋满仓.压铸模具设计[M].北京:电子工业出版社,2010.
[4]樊自由.铸造设备及自动化[M].北京:化学工业出版社,2009.
[5]黄勇.压铸模具简明设计手册[M].北京:化学工业出版社,2010.
[6]吴金富,许雪峰.感应加热工件内电磁场计算及其有限元模拟[J].浙江工业大学学报,2004,32(1):58-61.
[7]CAD/CAM/CAE技术联盟编著.Ansys15.0有限元分析从入门到精通[M].北京:清华大学出版社,2016.
[8]曹嘉新,戴一一,屠挺生.锻坯感应加热的有限元分析[J].上海金属,2003,25(2):41-45.
[9]胡仁喜,孙明礼.Ansys13.0电磁学有限元分析从入门到精通[M].北京:机械工业出版社,2012.
[10]常士家,谢鹏程.基于ANSYS的注射机料筒感应加热温度场数值模拟[J].塑料工业,2009,37(8):32-36.