锻压技术

不等径阀体的多向模锻生产工艺

英文标题：Multi-ram forging process for unequal diameter valve body

作者：徐文翠宋昌哲

分类号：TG316.3

出版年,卷(期):页码：2018,43(7):121-128

摘要：

针对一种不等径阀体的几何特点和性能要求，设计了两种多向模锻成形方案。采用Deform-3D有限元模拟软件对两种方案的成形过程进行了模拟，在锻件成形载荷、温度场、等效应变场、成形质量方面进行了对比分析。模拟结果表明，两种成形工艺对锻件成形载荷、温度场及等效应变场影响不大，但对锻件成形质量有显著影响，方案1成形锻件存在端面折叠及纵向飞边缺陷，方案2锻件成形质量良好。因此，根据模拟分析将方案2在40 MN多向模锻生产线上进行生产验证。结果显示，金属材料流动性好，锻件填充饱满，锻件3个法兰面和凸台面的成形质量良好，无折叠、纵向飞边等缺陷，与模拟分析结果吻合。

According to the geometric characteristics and performance requirements of an unequal diameter valve body, two kinds of multi-ram forging schemes were designed. Then, the forming processes of two schemes were simulated by FE software Deform-3D, and the forming load, temperature field, equivalent strain field and forming quality of forging were compared and analyzed. The simulation results show that two forming technologies have little effect on the forming load, temperature field and equivalent strain field of forging, but they have a significant effect on the forming quality of forging. Furthermore, there is end-face folding and longitudinal flash defects in the formed forging of scheme 1, and the forming quality of forging is fine in scheme 2. Thus, according to the simulation result, scheme 2 is tested and verified on the 40 MN multi-ram forging production line. The results show that the metal material has good fluidity, the forging is fully filled, and the forming quality of three flanges and convex surfaces of forging are good without folding and longitudinal flash. The results are in good agreement with the simulation results.

基金项目：

“高档数控机床与基础制造装备”科技重大专项-大型多向模锻制造共性技术研究（2012ZX04010082）

徐文翠（1988-），女，学士，工程师，E-mail：xuwencui121@163.com

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