锻压技术

38MnSiVS5非调质钢转向节的热锻成形数值模拟

英文标题：Numerical simulation of hot forging for steering knuckle of non-quenched and tempered steel 38MnSiVS5

作者：何文涛刘淑梅刘雅辉

单位：上海工程技术大学

分类号：TG316

出版年,卷(期):页码：2015,40(3):7-10

摘要：

以丰田IMV皮卡转向节的热锻工艺为研究对象，采用Deform-3D软件对38MnSiVS5非调质钢转向节的热锻成形过程进行有限元模拟，分析了该转向节辊锻毛坯头部直径的尺寸设计对成形载荷、坯料成形充模效果的影响，研究了阻力墙在热锻成形过程中对锻坯中金属流动和充填的作用。模拟结果表明：适当增加辊锻坯料的头部直径有助于金属充模，但直径过大会导致成形载荷急剧上升；为了促进转向节头部5个叉的成形，并避免辊锻坯料直径过大，有必要通过设置阻力墙迫使金属向合理方向流动。热锻成形试验表明，优化工艺后的转向节成形锻件的充填效果得到明显改善。

For the TOYOTA IMV pickup, the hot forging process for steering knuckle made of non-quenched and tempered 38MnSiVS5 was numerically simulated by Deform-3D, and the influences of the head diameter design of roll forging blank on forging load and filling were analyzed. The role of resistance wall in hot forging forming process of metal flow and filling was studied. The simulation results show that increasing the head diameter of the roll forging blank can appropriately help the metal fill the cavity, but excessive diameter will lead to a sharp rise of the forming load. In order to promote the forming of the five forks on the knuckle head and avoid a too large diameter on roll forging blank, it is necessary to set resistance walls to force the metal to flow along the reasonable direction. The hot forging experiments show that the filling effect on the steering knuckle is improved obviously after optimizing the process.

基金项目：

上海工程技术大学研究生科研创新项目资助(14KY 0514)

何文涛（1990-），男，硕士研究生

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