锻压技术

轨道交通用车轴精密辊锻成形工艺

英文标题：Precision roll forging process of axle for rail transit

分类号：TG335.19

出版年,卷(期):页码：2022,47(5):33-37

摘要：

通过对轨道交通用RE2B型车轴锻件进行工艺分析，设计开发了车轴两道次精密辊锻成形工艺。采用有限元技术，确定了车轴精密辊锻模拟的相关参数，对车轴精密辊锻过程进行了数值模拟。模拟结果显示：采用精密辊锻成形车轴，得到的辊锻件规整，锻造流线流畅连续，车轴各截面圆整度好，且端头平整，无凹凸和花瓣形状产生。在世界首台套1600 mm大型辊锻机上，对RE2B型车轴精密辊锻成形进行工艺实验，试制锻件外形规整，各部位尺寸符合要求，与数值模拟结果相一致。按铁路标准TB/T 2945—1999要求，对试制的车轴进行热处理后的性能检测，检测结果满足标准要求。

Through the process analysis of RE2B axle forgings for rail transit, the two-pass precision roll forging process for the axle was designed and developed. Then, the relevant parameters of the precision roll forging simulation for the axle were determined by finite element technology, and the precision roll forging process of the axle was numerically simulated. The simulation results show that the axle is formed by precision roll forging, the roll forgings is regular, and the forging streamline is smooth and continuous. Each section of the axle is well roundness, and the ends are flat without bump and petal shape. On the world's first set of 1600 mm large-scale roll forging machine, the process experiment of the precision roll forging for RE2B axles was carried out, the trial-produce forgings were regular in shape, and the size of each part met the requirements, which was consistent with the numerical simulation. According to the requirements of the railway standards TB/T 2945—1999, the performance test of the trial-produce axle was applied after heat treatment, and the test results met the specified requirements.

基金项目：

作者简介：杨勇（1982-），男，博士，正高级工程师，E-mail：yy19821110@163.com

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