42CrMo4钢39t锭真空浇铸和凝固过程数值模拟和生产实践  

Numerical Simulation for Vacuum Casting and Solidification Process of 39 t Ingot of Steel 42CrMo4 and Production Practice

作　　者：李胜利[1] 关锐[1] 艾新港[1] 许长军[1] 胡林[1] 

机构地区：[1]辽宁科技大学材料与冶金学院,鞍山114051

出　　处：《特殊钢》2016年第1期1-4,共4页Special Steel

基　　金：国家自然科学基金(51374125);教育部2011年度高等学校博士学科点专项科研基金项目(20112120120003);辽宁省教育厅项目(L2015251)资助

摘　　要：用Anycasting铸造软件对42CrMo4钢（/%：0.38~0.45C,0.90~1.20Cr~,0.025Mo）39 t锭真空浇铸和凝固过程进行计算机模拟,确定浇铸钢水温度1527℃,过热度40℃C时39 t钢锭充型时间18.78 min,其中锭身10min,帽口8.78 min,预判缩孔仅出现在帽口中心处。现场生产实践表明,铸锭锻造后的模块经Ⅱ级超声波探伤合格,成材率从工艺改进前的65%提高至71.35%。The computer simulation for vacuum casting and solidification process of 39 t ingot of steel 42CrMo4（/%：0.38~0.45 C,0.90~1.20 Cr,0.025Mo） has been carried out by using Anycasting software to get that with cast liquid temperature 1 527 ℃ and superheat extent 40 ℃ the casting time for 39 t ingot is 18.78 min including ingot body for 10 min and casting head for 8.78 min and the predicted shrinkage cavity location only occurs at center of casting head.The results of production practice in situ show that the forged die block is qualified by grade Ⅱ ultrasonic detection,and the yield of products increases to 71.35%from 65%before process improvement.

关 键 词：模具钢42CrMo4 39t钢锭 浇铸工艺 数值分析 成材率 

分 类 号：TG260[金属学及工艺—铸造]