| 引用本文: | 徐戊矫,王凯庆,邹明平,王鹏程.基于数值模拟的冷拉钢丝表面精度Ra的优化[J].材料科学与工艺,2012,20(3):7-12.DOI:10.11951/j.issn.1005-0299.20120302. |
| XU Wu-jiao,WANG Kai-qing,ZOU Ming-ping,WANG Peng-cheng.Optimization of surface accuracy Ra for the cold drawn steel wire based on numerical simulation[J].Materials Science and Technology,2012,20(3):7-12.DOI:10.11951/j.issn.1005-0299.20120302. |
|
| 摘要: |
| 为研究拉拔参数对冷拉钢丝表面精度Ra的影响，采用有限元软件MARC建立了钢丝表面微观形态的分析模型，对钢丝拉拔过程进行了模拟仿真，利用正交试验设计法研究了主要拉拔参数（拉拔速度v、过渡圆弧半径R、模具定径带长度L、模具入模角a、摩擦系数μ）对钢丝成形表面精度Ra的影响，并对模拟结果进行了极差分析和方差分析.结果表明：冷拉钢丝在一定断面缩减率的条件下Ra最佳的拉拔参数组合为v=30 mm/s、R=1 mm、L=3 mm、a=11°、μ=0.4）；各因素对Ra的影响程度次序为B(R) |
| 关键词: 钢丝 冷拔 拉拔参数 正交试验设计 表面粗糙度Ra |
| DOI：10.11951/j.issn.1005-0299.20120302 |
| 分类号:TG355.4 |
| 基金项目:中央高校基础研究基金资助项目（CDJZR10130019）；重庆市科委自然科学基金计划资助项目(CQ CSTC,2010BB4245 |
|
| Optimization of surface accuracy Ra for the cold drawn steel wire based on numerical simulation |
|
XU Wu-jiao, WANG Kai-qing, ZOU Ming-ping, WANG Peng-cheng
|
|
College of Material Science and Engineering,Chongqing University,Chongqing 400044,China
|
| Abstract: |
| To analyze the influence of drawing process parameters on surface accuracy Ra of cold drawn wire,the software MARC was used to establish the steel surface microcosmic structure analysis model and the wire cold drawing simulation was also carried out.The influences of the main drawing parameters (drawing velocity v,transition arc radius R,die sizing zone length L,the die semi-angle a,friction coefficient μ)on wire surface accuracy Ra were investigated by using the mathematical orthogonal experimental design method.The optimal drawing parameters(v=30 mm/s,R=1 mm,L=3 mm,a=11°,μ=0.4)under certain reduction of section area and the effect on analysis index Ra were obtained according to the simulation results by range analysis and variance analysis.The effect degree of significance for Ra is B(R) |
| Key words: steel wire drawing drawing parameters orthogonal experimental design surface finish Ra |
