基于有限元的发动机连杆衬套温挤压工艺参数优化  

Optimization on warm extrusion process parameters for engine connecting rod bushing based on finite element

作　　者：杨华龙[1] 樊文欣[1] 曹存存[1] 操文胜 胡新超 佘勇[1] 

机构地区：[1]中北大学机械与动力工程学院,山西太原030051

出　　处：《锻压技术》2017年第2期172-177,共6页Forging & Stamping Technology

基　　金：山西省自然科学基金资助项目(2012011023-2);山西省高校高新技术产业化项目(20120021)

摘　　要：以锡青铜连杆衬套为研究对象,通过Deform-3D软件进行了数值模拟。利用单一因素工艺参数试验法和正交试验优化试验方法对发动机连杆衬套的温挤压过程进行了数值模拟分析,得到了摩擦因数、温挤压速度、温挤压温度等参数在温挤压过程中对挤压力、损伤值的影响规律和显著性影响。利用极差分析得到了两组最优的温挤压工艺参数,并通过数值模拟两组较优解对挤压力、损伤值的影响规律的对比,最终得到一组最优解,即摩擦因数为0.1、温挤压速度为5 mm·s-1、温挤压温度为700℃。根据连杆衬套温挤压试验验证了使用优化后的工艺参数能够制造出表面质量高的成形件。For tin bronze connecting road bushing,the numerical simulation for the forming process was carried out by Deform-3D software. By means of single factor test method and orthogonal test method,the warm extrusion process of engine connecting rod bushing was simulated and analyzed. Then,the influence regulations of friction factor,warm extrusion speed and warm extrusion temperature on the extrusion force and damage value were obtained. Furthermore,two groups of optimum process parameters of warm extrusion were obtained by range analysis. Comparing with the influence regulations of two groups of optimized solution on the extrusion force and damage value,a set of optimal solution was obtained with friction coefficient of 0. 1,warm extrusion speed of 5 mm·s- 1and warm extrusion temperature of 700 ℃. According to the warm extrusion experiment of connecting rod bushing,the surface quality of formed parts manufactured by the optimized process parameters was verified.

关 键 词：发动机连杆 连杆衬套 温挤压 锡青铜 正交优化 有限元 

分 类 号：TG376[金属学及工艺—金属压力加工]