辊弯方矩形管工艺参数优化  

Process Parameters Optimization of Roll Bending for Rectangular Pipe

作　　者：胡盛德[1] 郭志旺[1] 肖颐[1] 吴晓冬[1] 

机构地区：[1]f武汉科技大学钢铁冶金及资源利用省部共建教育部重点试验室,材料与冶金学院,湖北武汉430081

出　　处：《热加工工艺》2015年第21期138-140,144,共4页Hot Working Technology

基　　金：钢铁冶金及资源利用省部共建教育部重点试验室开放基金项目(FMRU200903)

摘　　要：对方矩形管辊弯成形过程中机架间距、摩擦系数和轧制速度三个工艺参数的不同水平值进行了正交试验设计,用Abaqus有限元软件的显式非线性动态分析对所设计试验过程进行了模拟分析,求出各个道次各个参数的信噪比,获得了边部纵向应变峰值最小时各个道次三个工艺参数的最优值。并用优化后的参数模拟和验证之后,结果是各道次边部纵向应变峰值比优化前各组试验都小。优化后第4到第10道次纵向应变峰值的方差最小,也就是产品边部拉伸最小,并且边部拉伸分布均匀。The orthogonal test design of different levels of the three process parameters （the inter-distance between roll stations, friction coefficient and the roll forming line velocity） in rectangular pipe roll bending forming process was carried out. The designed test process was simulated by using explicit nonlinear dynamic analysis of the Abaqus finite element software. The signal-to-noise ratio of each parameter of the pass was obtained. The optimal value of three process parameters in each pass was acquired when longitudinal strain peak in edge was minimum. After the simulation and verification of using optimized parameters, result is that the longitudinal strain peak of each pass in the edge is smaller than that of various experiments before optimization. The variance of the longitudinal strain peak from the fourth to the tenth pass is the least after optimization, namely product edge stretch is the smallest. And the distribution of edge stretching is uniform.

关 键 词：参数优化 正交试验设计 显式非线性动态分析 纵向应变峰值 

分 类 号：TG335.7[金属学及工艺—金属压力加工]