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| 珠光体钢丝多道次拉拔成形过程中的应变路径分析 |
| Strain Path in Multi-pass Drawing of Pearlite Steel Wire |
| Received:October 10, 2016 Revised:November 10, 2016 |
| DOI：10.3969/j.issn.1674-6457.2016.06.005 |
| 中文关键词: 钢丝 多道次冷拉拔 有限元模拟 应变路径 |
| 英文关键词: steel wire multi-pass cold drawing finite element simulation strain path |
| 基金项目:国家自然科学基金（51404158） |
| Author Name | Affiliation | | YANG Ya-nan | 1.School of Materials Science and Engineering, Shenyang Ligong University, Shenyang 110159, China
2.School of Mechanical Engineering, Taizhou University, Taizhou 318000, China | | LIU Jin-song | 1.School of Materials Science and Engineering, Shenyang Ligong University, Shenyang 110159, China
2.Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China | | ZHANG Guang-liang | 1.School of Mechanical Engineering, Taizhou University, Taizhou 318000, China
2.Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China | | YE Neng-yong | 1.School of Materials Science and Engineering, Shenyang Ligong University, Shenyang 110159, China
2.School of Mechanical Engineering, Taizhou University, Taizhou 318000, China |
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| 中文摘要: |
| 目的 研究高强度珠光体钢丝冷拉大变形过程中应变路径的变化规律及其对力学性能的影响。方法 运用网格重划分和场变量传递技术，建立钢丝多道次冷拉应变路径全纪录有限元模拟方法，预测钢丝由0.62 mm到0.09 mm的多道次冷拉过程应变路径的演变。结果 23道次冷拉变形后，钢丝的最大应变值可达到4.360。随着拉拔道次增加，最大与最小等效应变值之间的差值随之增大，由第1道次的0.028增大至第23道次的0.473。结论 钢丝多道次拉拔过程中，各道次在心部到表层方向上的等效应变分布规律相同，均为先增大后减小；钢丝心部等效应变值最小，次表层处等效应变值最大。 |
| 英文摘要: |
| The work aims to study the variation of strain path during cold-drawn large deformation of high-intensity pearlite steel wire and its effects on the mechanical properties of pearlite steel wire. A finite element simulation method was established in virtue of the technology of grid redivision and field variable transmission, which could completely record the strain-path changes for steel wire in the cold multi-pass drawing process. Therefore, the evolution of strain path when the wire size reduced from 0.62 to 0.09 mm during multi-pass cold drawing was predicted. After 23 passes of cold drawing, the maximum equivalent strain was up to 4.360. With the increase of drawing passes, difference between the maximum and minimum equivalent strains increased from 0.028 to 0.473. During the multi-pass cold drawing of steel wire, the strain path of all passes first increases and then decreases. Distribution rule of equivalent strain from the center to the surface during all passes is same. Equivalent strain in the center is the minimum while that in sub-surface is the maximum. |
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