基于DB.12Cr2Mo1V钢的大型四辊卷板机卷板减薄分析  

Thinning analysis on large four-roll plate rolling machine based on DB.12Cr2Mo1V steel

作　　者：高淑娟[1] Gao Shujuan(School of Mechatronics Engineering,Zibo Vocational Institute,Zibo 255013,China)

机构地区：[1]淄博职业学院机电工程学院

出　　处：《锻压技术》2019年第12期33-39,共7页Forging & Stamping Technology

摘　　要：通过有限元分析仿真模拟软件Simufact建立板材卷制模型,开展了基于DB.12Cr2Mo1V钢的卷板成形工艺模拟设计,找出板材成形后最大减薄量出现的位置并与实际生产中测量的板材厚度减薄量进行对比,以掌握板材塑性成形技术中的减薄机理,形成有效的缺陷控制方法。有限元分析结果表明:板材成形过程中的等效塑性应变的最大值出现在板材边缘处,由第3道次中左侧辊对板材成形的过度挤压所导致,并观测到板材的中性层发生内移;板材成形过程中最大减薄量出现在板材前端预弯处,减薄量为2.2 mm,与实际生产中测得的结果吻合度较高。最后,提出针对性的优化方案,对实际生产具有一定的参考价值。A sheet rolling model was built by finite element analysis simulation software Simufact, and the simulation design of the rolling process for DB.12Cr2Mo1V steel was developed. Then, the position where the maximum thinning amount of sheet occured was found and compared with the measured amount in the actual production in order to grasp the thinning mechanism in the plastic forming technology of sheet metal and form an effective control method of defects. The results of finite element analysis show that the maximum value of equivalent plastic strain in the sheet forming process occurs at the edge of sheet, which is caused by the excessive extrusion of sheet by the left side roller in the third pass, and the neutrality layer of sheet is moved inward. Furthermore, the maximum thinning amount in the sheet forming process occurs at the front end of sheet, and the thinning amount is 2.2 mm, which is in good agreement with the measured results in the actual production. Finally, a targeted optimization scheme is proposed, which has certain reference value for the actual production.

关 键 词：DB.12Cr2Mo1V钢 四辊卷板机 减薄量 等效塑性应变 数值模拟 

分 类 号：TG316[金属学及工艺—金属压力加工]