基于数值模拟技术的大直径磨球热处理工艺优化
|
摘要
为了解决等温淬火过程中生产周期长、能耗大、淬火介质污染环境等问题,提出了一种新型热处理工艺,以得到贝氏体-马氏体复相组织。运用ANSYS软件对实际工件在淬火过程中的温度场进行了模拟,并结合C曲线优选出理想的工艺参数。利用热电偶深孔安装法验证了模拟温度场的准确性。通过优化后的热处理工艺参数对φ150 mm大直径磨球进行了反复水冷空冷,得到由心部到表面的硬度和组织含量,结果说明模拟是准确的。
In order to solve the problems of long production cycle, high energy consumption and quenching medium environment pollution in the process of isothermal quenching, a new type of heat treatment process was put forward to obtain bainite-martensite duplex microstructure. The temperature field of the actual workpiece during quenching process was simulated by using ANSYS software. The ideal technological parameters were optimized combined with C curve. The accuracy of the simulated temperature field was verified by the method of deep hole installation of thermocouples. Repeated water cooling and air cooling for φ150 mm large diameter grinding ball was carried out by optimized heat treatment process parameters, and the hardness and microstructure contents from the heart to the surface were obtained. The results illustrate that the simulation is accurate.
In order to solve the problems of long production cycle, high energy consumption and quenching medium environment pollution in the process of isothermal quenching, a new type of heat treatment process was put forward to obtain bainite-martensite duplex microstructure. The temperature field of the actual workpiece during quenching process was simulated by using ANSYS software. The ideal technological parameters were optimized combined with C curve. The accuracy of the simulated temperature field was verified by the method of deep hole installation of thermocouples. Repeated water cooling and air cooling for φ150 mm large diameter grinding ball was carried out by optimized heat treatment process parameters, and the hardness and microstructure contents from the heart to the surface were obtained. The results illustrate that the simulation is accurate.
引文
[1]蒋业华,周荣,周荣锋,等.控制冷却贝氏体/马氏体铸钢组织和性能的研究[J].铸造,1999(5):15-18.
[2]陈浩,邓忠华,余红梅.热电偶测温系统原理及应用[J].制造业自动化,2004(9):68-71.
[3]张建峰,王翠玲,吴玉萍,等.ANSYS有限元分析软件在热分析中的应用[J].冶金能源,2004(5):9-12.
[4]冯丙波,王栓虎,丁旺.基于ANSYS的高速冲床曲轴热分析[J].煤矿机械,2010(7):77-79.
[5]杨建奎,江克斌,翟可为.基于ANSYS的辐射和相变对焊接温度场的影响研究[J].机械工程与自动化,2012(1):60-62.
[6]李瑞峰,祁凯,赵勇.ANSYS软件在焊接传热学教学中的应用[J].科技资讯,2011(17):199-200.
[7]齐德荣.热电偶测温误差[J].黑龙江科技信息,2007(9):17.
[8]任勇强,尚成嘉,张宏伟,等.0.23C-1.9Mn-1.6Si钢中的残余奥氏体对韧塑性的影响[J].材料研究学报,2014(4):274-280.
[9]杨福宝,白秉哲,刘东雨,等.无碳化物贝氏体/马氏体复相高强度钢的组织与性能[J].金属学报,2004(3):296-300.
[2]陈浩,邓忠华,余红梅.热电偶测温系统原理及应用[J].制造业自动化,2004(9):68-71.
[3]张建峰,王翠玲,吴玉萍,等.ANSYS有限元分析软件在热分析中的应用[J].冶金能源,2004(5):9-12.
[4]冯丙波,王栓虎,丁旺.基于ANSYS的高速冲床曲轴热分析[J].煤矿机械,2010(7):77-79.
[5]杨建奎,江克斌,翟可为.基于ANSYS的辐射和相变对焊接温度场的影响研究[J].机械工程与自动化,2012(1):60-62.
[6]李瑞峰,祁凯,赵勇.ANSYS软件在焊接传热学教学中的应用[J].科技资讯,2011(17):199-200.
[7]齐德荣.热电偶测温误差[J].黑龙江科技信息,2007(9):17.
[8]任勇强,尚成嘉,张宏伟,等.0.23C-1.9Mn-1.6Si钢中的残余奥氏体对韧塑性的影响[J].材料研究学报,2014(4):274-280.
[9]杨福宝,白秉哲,刘东雨,等.无碳化物贝氏体/马氏体复相高强度钢的组织与性能[J].金属学报,2004(3):296-300.