锻压技术

双辊摆辗大直径薄圆盘数值模拟分析及优化

英文标题：Numerical simulation analysis and optimization on doubleroller rotary forging for large diameter and thin disc

作者：刘鑫朱春东高玉凡王莹珺

分类号：TG331

出版年,卷(期):页码：2019,44(5):53-57

摘要：

为了研究大直径薄圆盘双辊摆辗成形工艺，通过UG设计了闭式模具和浮动式模具两种不同的模型。以直径Φ505 mm、厚度5.5 mm 的圆盘为研究对象，利用Deform3D数值模拟分析软件，对两种模具结构摆辗成形大直径圆盘件进行了分析，确定了闭式模具结构为较优方案。通过在闭式模具结构上进行正交试验，对摆辗成形工艺参数进行优化。结果表明，坯料初始温度、轧辊转速、下模进给速度以及工件和下模之间的摩擦系数对双辊摆辗成形大直径薄圆盘有着重要的影响。当坯料初始温度为950 ℃、轧辊转速为75 r·min-1、下模进给速度为1 mm·s-1、摩擦系数为0.5时，圆盘成形质量较好。通过实际试验验证,获得了质量良好的工件。

In order to research doubleroller rotary forging process for large diameter and thin disc, two different models of closed die and floating die were designed by UG. For the disc with diameter Φ500 mm and thickness 5 mm, two kinds of die structures were analyzed by numerical simulation analysis software Deform3D, and the closed die was determined to be the optimized scheme. Then, the process parameters of doubleroller rotary forging were optimized by the orthogonal test on the closed die. The results show that the initial temperature of billet, the rotational speed of swing head, the feeding speed of lower die and the friction coefficient between workpiece and lower die have important influence on the forming of large diameter and thin disc by doubleroller rotary forging. When the initial temperature of billet is 950 ℃, the rotational speed of swing head is 75 r·min-1, the feeding speed of lower die is 1 mm·s-1, and the friction coefficient of workpiece and lower die is 0.5, the forming quality of the disc is better. Thus, the large diameter and thin disc with good quality is obtained by actual test.

基金项目：

国家自然科学基金资助项目（51875427）

作者简介：刘鑫（1995-），男，硕士研究生 Email：2992372688@qq.com 通讯作者：朱春东（1963-），男，硕士，教授 Email：zcdzcd6252@sina.com

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