锻压技术

基于有限元分析的车用空心六角头杆件芯模寿命研究

英文标题：Study on service life of core mold for vehicle hollow hexagonal rod based on finite element analysis

作者：赵慧真崔华丽

分类号：TG376.3

出版年,卷(期):页码：2023,48(7):177-183

摘要：

在某种车用空心六角头杆件的挤深孔工序中，负责成形深孔的芯模受力极大，表面磨损严重、失效快。为解决该问题，基于经典的粘着磨损理论，通过Deform11.0软件，研究了5种不同结构的芯模的挤压过程，对比了芯模表面的最大磨损深度和严重磨损面积，结果发现同等条件下锥面芯模的寿命更长。以降低磨损为目的，通过正交试验对锥面芯模的尺寸参数进行了优化，同时研究了不同涂层对芯模表面的降磨损作用，结果表明在TiAlN涂层的降磨损效果更好。采用改进后的芯模进行零件的深孔成形，孔的成形质量较好，芯模寿命为原来的2.48倍。

In the deep hole extrusion process for a vehicle hollow hexagonal rod, the core mold responsible for forming deep holes has great force, the surface wear is serious, and the failure is rapid. Therefore, in order to solve this problem, based on the classic adhesive wear theory, the extrusion processes of five kinds of core molds with different structures were studied by saftware Deform 11.0, and the maximum wear depth and the severe wear area on the core mold surface were compared. The results show that the service life of tapered core mold is longer under the same condition. For the purpose of reducing wear, the size parameters of tapered core mold were optimized by orthogonal test. At the same time, the wear reduction effect of different coatings on the core mold surface was studied. The results show that the wear reduction effect of TiAlN coating is better. Thus, the deep hole forming of parts is conducted by the improved core mold, the forming quality of hole is better, and the service life of core mold is 2.48 times that of the original mold.

基金项目：

校级青年科研基金项目（QK2114）

作者简介：赵慧真（1988-），女，硕士，讲师 E-mail：zhz8812@163.com

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