摘要
宽展分流挤压工艺(SDEP)是宽展挤压和分流挤压有机结合的新挤压工艺。它可以利用小吨位设备挤压大口径管材。使用DEFORM-3D有限元软件对大口径AZ31镁合金圆管宽展分流挤压(宽展比率α=2.54)过程中的挤压力、挤压温度以及焊合压力变化规律进行了仿真。结果表明:宽展分流挤压AZ31镁合金圆管(外径360 mm,壁厚10 mm)的挤压力为22.7 MN,比普通分流挤压的挤压力降低28%;AZ31镁合金管材(外径360 mm,壁厚10 mm)宽展分流挤压过程中焊合压力达到了225 MPa,宽展分流挤压的金属材料焊合质量良好。
The spread-dividing extrusion process(SDEP) is a new extrusion technology which combines spread extrusion and porthole extrusion. It can use small-tonnage equipment to squeeze large diameter tube. The variations of extrusion pressure, extrusion temperature and welding pressure of alarge-diameter AZ31 magnesium alloy tube during spread-dividing extrusion(spread ratio α=2.54) were simulated. The results show that the extrusion pressure of the AZ31 magnesium alloy tube(external diameter of 360 mm and wall thickness of 10 mm) in spread-dividing extrusion process is 22.7MN, and the extrusion pressure is reduced by 28% compared with that of the common shunt extrusion;the welding pressure of AZ31 magnesium alloy tube(external diameter of 360 mm and wall thickness of 10 mm) in spread-dividing extrusion process reaches 225 MPa. The welding quality of the metal material extruded by spread-dividing extrusion process is good.
作者
雷同飞
潘峰
LEI Tongfei;PAN Feng(College of Mechanical Engineering,Xijing University,Xi'an 710123,China)
出处
《热加工工艺》
北大核心
2019年第1期174-177,共4页
Hot Working Technology
基金
陕西省自然科学基金项目(2013JM7026)
陕西省教育厅专项科研计划项目(14JK2160)
西京学院科研基金项目(XJ160118)
关键词
大口径AZ31镁合金管材
宽展分流挤压
挤压力
焊合压力
large diameter AZ31 magnesium alloy tube
spread-dividing extrusion process (SDEP)
extrusion force
welding pressure
