无冒口钢锭无缩孔解决方案  

Research on Solution of Shrinkage Cavity of the Riserless Ingot

作　　者：时立佳 曹志远[1] 沙心勇 张建国[1] Shi Lijia;Cao Zhiyuan;Sha Xinyong;Zhang Jianguo

机构地区：[1]中国一重天津重型装备工程研究有限公司,天津300457 [2]中国一重大连工程技术有限公司高,辽宁大连116600

出　　处：《一重技术》2022年第4期37-40,共4页CFHI Technology

摘　　要：针对传统钢锭冒口重量占比大,锻造利用率低的问题,提出钢锭无冒口锻造新方法。着重介绍在无冒口钢锭浇注凝固的固、液两相共存阶段采用锻造方式解决无冒口钢锭的缩孔问题。通过径向挤压模拟分析,确定钢锭冒口最佳锥度和上模具内侧角。In view of the problem that the traditional ingot is with large riser weight proportion and low forging utilization rate,a new method of riserless ingot forging is proposed.This paper mainly introduces the method to solve the problem of shrinkage cavity in the forgings of the riserless ingot during the coexistence phase of liquid and solid of riserless ingot casting.The optimal taper of the riser and inner angle of the upper die are determined by simulation analysis of the radial extrusion.

关 键 词：数值模拟 无冒口 径向挤压 

分 类 号：TG316[金属学及工艺—金属压力加工]