谐波减速器柔轮用特殊钢RL40的组织特性

特殊钢 ›› 2021, Vol. 42 ›› Issue (3): 76-78.

谐波减速器柔轮用特殊钢RL40的组织特性

王洋¹，王欢²，张朝磊²，王浩¹，张旭³，苗红生³

1. 北京中技克美谐波传动股份有限公司
2. 北京科技大学材料科学与工程学院
3. 西宁特殊钢股份有限公司

收稿日期:2020-10-04 出版日期:2021-05-15 发布日期:2022-03-15
作者简介:王洋(1983-),男，硕士(2009年中央财经大学)，高级工程师,2001年南京财经大学(本科)毕业，谐波减速器研发和制造。

Structure and Characteristics of Special Steel RL40 for Flexspline of Harmonic Reduction Gear

Wang Yang¹ , Wang Huan², Zhang Chaolei² , Wang Hao¹, Zhang Xu³, Miao Hongsheng

1 Beijing CTKM Harmonic Drive Co Ltd. Beijing 101318 ;
2 School of Materials Science and Engineering University of Science and Technology Beijing, Beijing 100083 ;
3 Xining Special Steel Co Ltd, Xining 810005

Received:2020-10-04 Published:2021-05-15 Online:2022-03-15

摘要/Abstract

摘要： 通过光学显微定量分析和热膨胀实验,研究了柔轮用钢RL40（/%:0.40C,0.90Cr,1.85Ni,0.25Mo,0.05Nb,0.016Ti）的微观组织、相变点和奥氏体晶粒粗化规律等材料基本特性。结果表明:轧材组织为贝氏体+马氏体,原始奥氏体晶粒平均尺寸为14.0 μm,晶粒度级别为9.09.5,平均标准偏差均在0.46~0.48;相变点Ac₁为729℃,Ac₃为769 ℃,Ms点为281 ℃;奥氏体晶粒粗化温度为1 000℃。

关键词: 谐波减速器柔轮用钢RL40, 粗化温度, 相变点;

Abstract: The materials basic characteristics of structure, austenite grain coarsening and phase transformation point of RL40 steel for flexpline (/% ：0.40C, 0.90Cr, l. 85Ni, 0.25Mo, 0.05Nb, 0.016Ti) has been studied by the quantitative analysis of optical microscopy and thermal expansion experiment. The results show that the microstructure of the rolled bar is bainite + martensite, the average grain size of primary austenite is 14. 0 μm, and the austenite grain size rating is 9. 0 ~ 9. 5, and the average standard deviation is 0. 46 ~ 0. 048. The transformation point Ac₁ is 729 ℃, Ac₃ is 769 ℃, Ms is 28 ℃, and the austenite grain coarsening temperature is 1 000 ℃.

王洋, 王欢, 张朝磊, 王浩, 张旭, 苗红生. 谐波减速器柔轮用特殊钢RL40的组织特性[J]. 特殊钢, 2021, 42(3): 76-78.

Wang Yang, Wang Huan, Zhang Chaolei, Wang Hao, Zhang Xu, Miao Hongsheng. Structure and Characteristics of Special Steel RL40 for Flexspline of Harmonic Reduction Gear[J]. Special Steel, 2021, 42(3): 76-78.