倾转浇注法制备半固态浆料的数值模拟  

Numerical Simulation of the Tilt Pouring Method for Preparation of Semi-solid Slurry

作　　者：张力文[1] 郭洪民[1,2] 王乾[1] 杨湘杰 

机构地区：[1]南昌大学材料科学与工程学院 [2]江西省高性能精确成形重点实验室

出　　处：《特种铸造及有色合金》2016年第2期161-164,共4页Special Casting & Nonferrous Alloys

基　　金：国家自然科学基金资助项目(11364031);江西省自然科学基金资助项目(20122BAB206021);江西省青年科学家计划资助项目(20122BCB23001);江西省自然科学基金重点资助项目(20133ACB21003);江西省教育厅科技落地计划资助项目(KJLD14016)

摘　　要：运用倾转浇注法制备了半固态浆料,采用AnyCasting模拟软件确定了临界倾转速度,研究了浇注温度、料筒材料和料筒壁厚对合金液与料筒间的热平衡的影响,最后通过半固态浆料制备试验进行了验证。结果表明,当倾转速度≥18(°)/s时,合金熔体流动速度>0.5m/s并存在涌动波;当倾转速度≤6(°)/s时,合金熔体流动速度<0.5m/s,未产生涌动波。料筒材料、料筒壁厚和浇注温度严重影响着倾转混合过程中合金液的冷却曲线。料筒壁厚的影响最大,浇注温度的影响次之,料筒材料的影响最小。A tilt pouring method to preparing semi-solid slurry has been developed.Critical tilting angle speed was determined by AnyCasting software,and effects of pouring temperature,mould materials and mould wall thickness on the thermal balance between molten alloy and mould were investigated.Finally,experiments were carried out to compare with simulated results.The results reveal that with increasing the tilting speed more than 18（°）/s,the flowing speeds of molten alloy are higher than 0.5m/s with occurrence of unzipping wave.However,with decreasing in the tilting speed lower than 6°/s,the flowing speeds of molten alloy are lower than 0.5m/s with disappearance of unzipping wave.It is found that the thermal balance between molten alloy and mould are closely related with pouring temperature,mould materials and mould wall thickness.The influencing degree sequence is presented as follows：mould wall thickness〉 pouring temperature〉 mould materials.

关 键 词：倾转浇注 数值模拟 半固态浆料 

分 类 号：TG249.9[金属学及工艺—铸造]