第42卷第8期 Vol. 42No. 8
特种成形
假压技木
FORGING&STAMPING TECHNOLOGY
台复合截面环件精密轧制毛坏的优化设计方法
何松"2，华林23，兰箭23，钱东升12
2017年8月 Aug.2017
（1．武汉理工大学材料科学与工程学院，潮北武汉430070；2．武汉理工大学现代汽车零部件技术湖北省
重点实验室，湖北武汉430070；3.武汉理工大学汽车工程学院，湖北武汉430070
摘要：针对广泛用于油气管道阀门、航空发动机机厘及结合环中的锥台复合截面环件较难同时获得所需的直径尺寸和台阶形复合截面环件轧制过程的有限元仿真模型，分析两种环坏轧制过程中的台阶充型规律及最终的成形环件尺寸误差，结果表明，，，添加尺寸修正系数"。通过对比不同修正系数"下的环坏轧制成形尺寸精度，得出尺寸修正系数"在1<"<1.1范围内的“变壁厚型”环坏为最优环件轧制毛坏。基于模拟结果，在WD51Y-250多功能轧环机上进行维台复合截面环件轧制实验，验证有限元模按的可靠性和环坏设计方案的可行性。
关键词：锥台复合截面环件；环件轧制；环坏设计；有限元模拟；尺寸误差：精密轧制 DOI : 10. 13330/j. issn. 1000-3940. 2017. 08. 012
中图分类号：TG33
文献标识码：A
文章编号：1000-3940（2017）08-0054-08
Optimization design onprecision rollingblank for conical ring with outerstep
He Song-2, Hua Lin2-3, Lan Jian2.3, Qian Dongsheng'-2
(1. School of Materials Secience and Engineering, Wuhan University of Technology, Wuhan 430070, China ;
2. Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan 430070, China;
3. School of Automotive Engineering, Wuhan University of Technology , Wuhan 430070, China)
Abstract: The conical rings with outer step is widely used in oil and gas pipeline valves, bearings and aircraft engine casings. Since it is difficult to obtain the required diameter size and step shape simultaneously , two kinds of ring blanks with equal wall thickness and variable wall thickness were designed. Then, their rolling process was simulated by the ABAQUS, and the step filling law and the dimension errors of the rolled ring were analyzed. The results show that the dimension precision of rolled ring with variable wall thicknesses ring blank is higher than that of rolled ring with equal wall thickness ring. Therefore, the size correction coeficient ry is added to obtain the optimal di-mension precision based on the variable thickness design. Finally, by comparing the dimensional precision of rolled ring under different correction coefficients ), the optimal correction coeficient is within 1 < ry < 1. 1. According to simulation result, related rolling experi-ments were caied out in WD51Y 250 ring rolling mill to rerify the reliability of FE simulation and the feasibility of the design method of blank with variable wall thicknesses.
Key words: conical ring with outer step; ring rolling;: design of ring blank ; FE simulation; dimension error; precision rolling
锥台复合截面环件是一种特殊的环类零件，环件两端带有外台阶，内、外表面有相等的锥度。这类环件作为结构件广泛用于油气管道阀门、航空发动机机厘及结合环中。由于其应用领域特殊，且多
收稿日期：20170320；修订日期：20170522
基金项目：江苏省重点研发专项（BE2016009)；JGXM（201607O001）
作者简介：何松（1990－），男，硕士研究生 E-mail: 13986266582@ 163. com
通讯作者：华林（1962-），男，博士，教投 E-mail: hualin@ vhut, edu. cn
万方数据
工作在高压、高温、腐蚀等恶劣环境，通常需通过塑性加工来获得良好的服役性能。锥台复合截面环件很难通过传统锻造成形，传统锻造成形不仅能耗高、材料利用率低，而且生产效率低。环件轧制技术作为国际认可的环形零件加工制造技术，主要通过轧辑的不断进给，使环件毛坏不断发生连续的局部变形，最终得到满足生产需求的环件成品。目前环件轧制技术已大量用于生产各种类型的环件。然而，对于锥台复合截面环件这类复杂截面环件而言，由于其几何形状沿轴向分布不规则，轧制过程