锻压技术

基于Deform 3D的长杆类汽车转向节锻模设计及锻造工艺生产验证

英文标题：Design on forging mold and production verification of forging process for automobile steering knuckle with long rod based on Deform 3D

作者：刘江徐皓

单位：重庆工程职业技术学院中国科学技术大学重庆东科模具制造有限公司重庆大学

关键词：长杆类锻件转向节弯曲模具预锻模具终锻模具

分类号：TG315.2

出版年,卷(期):页码：2021,46(2):9-13

摘要：

针对SG转向节形状复杂、锻件截面变化较大的结构特点和实际锻造生产中出现的塌角、缺料、折叠等锻造缺陷，通过Deform 3D有限元软件建立SG转向节的有限元模型，构建弯曲模具、预锻模具和终锻模具，并分析预锻件和终锻件的金属流动过程。对SG转向节的弯曲、预锻和终锻3道工序进行现场生产试验，验证了模具设计、工艺方案的正确性和数值模拟结果的准确性，得出长杆类转向节应采用辊锻制坯+弯曲工序、再结合模锻复合成形工艺进行生产。试验中，SG转向节锻件的材料利用率达到了80.8%，合格率达到97.9%，单次模具寿命可延长至生产900件。

For the structural characteristics of SG steering knuckle with complex shape and large change in forging section, as well as the forging defects such as collapse, lack of material and folding in actual forging production, the finite element model of SG steering knuckle was established by finite element software Deform 3D, the bending, pre-forging and final forging molds were constructed, and the metal flow processes of pre-forgings and final forgings were analyzed. Then, the three processes of bending, pre-forging and final forging for SG steering knuckle were tested on-site production to verify the correctness of mold design and process scheme and the accuracy of numerical simulation results, and it was concluded that the steering knuckle with long rod should be produced by roll forging blank-making and bending process, and combining with compound forming process of die forging. In the test, the material utilization rate of SG steering knuckle forgings is up to 80.8%, the pass rate is up to 97.9%, and the life of a single mold is extended to produce 900 pieces.

基金项目：

重庆市教委科学技术研究计划资助项目（KJQN202003406）

刘江（1982-），女，硕士，工程师，E-mail：379280626@163.com；通讯作者：徐皓（1979-），男，硕士，教授,正高级工程师，E-mail：xuhaolj@mail.ustc.edu.cn

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