摘要
针对BJ型钟形壳零件的温-冷联合成形工艺,即下料—挤杆—镦头—反挤压—精整—冷减径工艺,进行了数值模拟研究。重点对钟形壳温锻反挤压工步成形的材料分配及流动规律、温度场、载荷曲线进行了数值模拟分析,得到了有利于材料流动的合理的模具结构,优化的反挤压成形温度为700~900℃,反挤压工步成形力为9000 kN。以上数据为钟形壳精密锻造及模具制造和设计提供了理论依据。
The warm-cold forming process of blanking-extrusion-backward extrusion -finishing-reduction was researched for BJ-type outer race by means of numerical simulation.Focusing on analysis of the material flow,temperature distribution as well as the load curve for the backward-extrusion process,a reasonable mold construction was obtained.The optimized temperature is 700-900 ℃ for backward extrusion process and the load is 9000 kN.The above reasonable data for BJ-typed outer race offer favorable basis for forming and mold design.
出处
《锻压技术》
CAS
CSCD
北大核心
2011年第2期23-26,共4页
Forging & Stamping Technology
基金
"高档数控机床与基础制造装备"科技重大专项(2009ZX04014-071)
关键词
钟形壳零件
温冷联合成形
数值模拟
outer race
warm-cold combination forging process
numerical simulation
