摘要
流线缺陷是制约模锻产品质量的关键问题之一,因此,解决汽车零部件模锻过程中的流线缺陷问题已刻不容缓。基于塑性加工理论和热力耦合工艺,利用有限元DEFORM-3D软件建立了全流程模锻成形过程,对汽车制动器推力杠杆模锻成形过程中的流线缺陷问题进行了分析,并通过实验验证了模型的准确性。根据汽车制动器推力杠杆结构特征设计了两种模锻成形工艺方案JT和HJT,对比分析了两种方案的锻件成形过程、加载方式、锻件成形质量、锻件温度分布、锻件流线分布情况和受力分布等。研究表明:HJT方案可以改善模锻过程中的流线分布和受力分布,提高了锻件的抗拉强度和材料利用率,为解决流线缺陷问题奠定了理论基础。
Streamline defect is one of the key problems restricting the quality of die forging products,so it is urgent to solve the problem of streamline defect in the die forging process for automobile parts.Therefore,based on the plastic processing theory and thermal-mechanical coupling process,the whole process of die forging was established by finite element software DEFORM-3D,the streamline defect problems in the die forging process of automobile brake thrust lever were analyzed,and the accuracy of the model was verified by experiments.Then,according to the structural characteristics of automobile brake thrust lever,two die forging process schemes of JT and HJT were designed,and the forgings forming process,loading mode,forming quality of forgings,temperature distribution of forgings,streamline distribution of forgings and force distribution of the two schemes were compared and analyzed.The research shows that HJT scheme can improve the streamline distribution and loading distribution in the die forging process,and significantly improves the tensile strength and material utilization of the forgings,which lays a theoretical foundation for solving the problem of streamline defect.
作者
刘晓立
刘虹
郑富元
刘志强
赵昌德
张明
黄素霞
王占一
闫宾
郭进喜
Liu Xiaoli;Liu Hong;Zheng Fuyuan;Liu Zhiqiang;Zhao Changde;Zhang Ming;Huang Suxia;Wang Zhanyi;Yan Bin;Guo Jinxi(Golden Horse Industry Group Co.,Ltd.,Rizhao 276826,China;Hebei Province Key Laboratory of Intelligent Industrial Equipment Technology,Institute of Machinery and Equipment Engineering,Hebei University of Engineering,Handan 056038,China;School of Mechanical Engineering,University of Science and Technology Beijing,Beijing 100083,China;School of Mechanical Engineering,Anyang Institute of Technology,Anyang 455000,China)
出处
《锻压技术》
CAS
CSCD
北大核心
2023年第8期25-31,共7页
Forging & Stamping Technology
基金
河北省教育厅青年基金资助项目(QN2021209)
国家自然科学基金资助项目(52005148)
山东省科技型中小企业创新能力提升工程项目(2022TSGC2510,2022TSGC1231)
安阳市科技计划资助项目(2022C01GX015)。
关键词
流线缺陷
模锻成形
制动器推力杠杆
镦粗
压扁
streamline defect
die forging
brake thrust lever
upsetting
flattening
作者简介
刘晓立(1986-),男,博士,讲师,E-mail:liuxiaoli01206332@163.com。
