镁合金等温锻造加热装置的设计及模具温度曲线  

Design of heating device for magnesium alloy isothermal forging and temperature curve of die

作　　者：付传锋[1] 胡亚民[2] 赖周艺[2] 赵军华[3] 

机构地区：[1]中国南车集团戚墅堰机车车辆工艺研究所,江苏常州213011 [2]重庆工学院材料科学与工程学院,重庆400050 [3]江苏太平洋精密锻造有限公司,江苏泰州225500

出　　处：《锻压技术》2007年第5期165-167,共3页Forging & Stamping Technology

基　　金：华中科技大学材料成形与模具技术国家重点实验室开放基金资助项目(06-1)

摘　　要：为了能生产出合格的镁合金电动螺丝刀套筒锻件,设计了电阻丝陶瓷加热圈、温度控制系统和镁合金等温锻造模具,介绍了电阻丝陶瓷加热圈、温度控制系统和保温隔热系统的构成。利用"模膛"直接加热镁合金坯料,"模膛"就是"炉膛"。计算出模具的加热时间为26 min,与实际加热时间27 min相近。绘制并分析了设定温度分别为260,300和340℃,从室温开始加热的模具温度曲线。由温度-时间曲线可知,镁合金等温锻造模具的加热特性稳定,即不同设定温度下的"冲温"均为50℃左右。To produce eligible magnesium alloy electric screwdriver knife sleeve forgings, an isothermal forging die with resistance-wire ceramic heater and temperature control system was designed. The structure of resistance-wire ceramic beater, temperature control system and heat preservation system were introduced. The cavity was used as hearth to heat up magnesium alloy billets directly. A formula was employed to calculate the heating time of die, it was 26 min which was close to the experiment heating time of 27 min. As setting temperature was 260, 300 and 340 ℃ respectively, the temperature-time curve of die was gained and an analysis on it was presented. The temperature-time curve shows that the heating characteristic of magnesium alloy isothermal forging die is stable, that is the rush temperature under different setting temperatures is about 50 ℃.

关 键 词：镁合金 等温锻造 加热装置 温度曲线 

分 类 号：TG307[金属学及工艺—金属压力加工]