复合轧辊球墨铸铁辊芯铸模底箱优化设计及生产验证  

Optimization Design and Production Validation of Bottom Mold forDuctile Iron Core Casting of Centrifugal Composite Roll

作　　者：万敏 杨秀霞 王晋涛 郭修磊[3] 孙格平[3] WAN Min;YANG Xiu-xia;WANG Jin-tao;GUO Xiu-lei;SUN Ge-ping(Hebei Institute of Mechanical and Electroninc Technology,Xingtai 054000,Hebei,China;Hebei Metal Materials Digital Forming Applied Technology R&D Center,Xingtai 054000,Hebei,China;Sinosteel Xingtai Machinery&Mill Roll Co.,Ltd.,Xingtai 054025,Hebei,China)

机构地区：[1]河北机电职业技术学院,河北邢台054000 [2]河北省金属材料加工及数字化成型应用技术研发中心,河北邢台054025 [3]中钢集团邢台机械轧辊有限公司,河北邢台054025

出　　处：《铸造》2021年第6期722-726,共5页Foundry

摘　　要：采用传统的铁模覆砂底箱生产的离心复合轧辊经常在辊芯的底颈发现中心疏松缺陷。通过研究分析,一个有利于实现顺序凝固、减少辊芯底颈疏松的新型金属型底箱被设计,并应用ProCAST软件分别对采用传统的铁模覆砂底箱和新型的金属型底箱生产离心复合铸造轧辊球墨铸铁辊芯的凝固过程进行了数值模拟。实际生产和检测结果表明,采用新型金属型底箱模具生产轧辊的球墨铸铁辊芯,辊芯底颈疏松完全去除,底颈金相组织和力学性能得到明显改善。A new type bottom permanent mold for casting of ductile iron core of centrifugal composite roll was designed,which is beneficial for realizing sequential solidification and reducing shrinkage porosity of the bottom neck of the roll core.The ProCAST software was used to simulate the solidification process of the bottom neck in the ductile iron cores produced respectively using the bottom sand coated iron mold and the bottom permanent mold,The actual production and examination results show that the shrinkage porosity at the bottom neck of the roll core is completely removed after the new type bottom permanent mold is applied,and the microstructure and mechanical properties at the zone of the bottom neck are obviously improved.

关 键 词：铸造轧辊 底箱 优化设计 数值模拟 

分 类 号：TG0244[金属学及工艺]