摘要
为解决汽车推杆接头质量差、强度低、使用寿命短的问题,提出采用闭塞锻造工艺取代传统的铸造工艺生产方式。采用有限元软件Deform模拟了推杆接头闭塞锻造成形过程,研究了冲头进给速度、坯料加热温度、模具预热温度对锻件温度分布、材料最大流速、损伤值及载荷的影响,并对工艺参数进行了优化。结果表明:随着冲头进给速度和模具预热温度的增加,载荷先减小后增加,而随着坯料加热温度的增加,载荷逐渐减小;随着各工艺参数的增加,材料最大流速均呈现增大趋势;随着冲头进给速度和模具预热温度的增加,锻件内外温度差及损伤值均呈现先减小后增大的趋势,而随着坯料加热温度的增加则逐渐减小。最终得到最优锻造工艺参数为:坯料加热温度为1200℃、模具预热温度为350℃、冲头进给速度为40 mm·s^(-1)。
To solve the problems of poor quality,low strength and short service life of automotive push rod joint,it was proposed to use the closed-die forging process instead of the production method of traditional casting process.The finite element software Deform was used to simulate the closed-die forging process of push rod joint,the effects of punch feeding rate,billet heating temperature and die pre-heating temperature on temperature distribution of forgings,maximum flow rate of material,damage value and load were studied,and the process parameters were optimized.The results show that the load decreases first and then increases with the increasing of punch feeding rate and die pre-heating temperature,and gradually decreases with the increasing of billet heating temperature.The maximum flow rate of material show a trend of increases with the increasing of various process parameters.The temperature difference between inside and outside of the forgings and the damage value show a trend of first decreases and then increases with the increasing of punch feeding rate and die pre-heating temperature,while gradually decreases with the increasing of billet heating temperature.The final optimal forging process parameters are as follows:the billet heating temperature of 1200℃,the die pre-heating temperature of 350℃ and the punch feeding rate of 40 mm·s^(-1).
作者
荆登峰
周利东
Jing Dengfeng;Zhou Lidong(Department of Mechanical and Electrical Engineering,Taiyuan City Vocational College,Taiyuan 030027,China;School of Mechanical Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China)
出处
《锻压技术》
北大核心
2025年第10期28-33,95,共7页
Forging & Stamping Technology
基金
山西省科技成果转化引导专项(202104021301062)
山西省基础研究计划(202203021211202)。
关键词
闭塞锻造工艺
金属流动
温度分布
载荷
损伤值
closed-die forging process
metal flow
temperature distribution
load
damage value
