金属加工（热加工）Issue(6)：35-40,6.
正火工艺对EA1N车轴组织与性能的影响
Study on the influence of normalizing process on the structure and performance of EA1N axle
余亚东 1于文坛 1史娜 1姚三成 1刘学华 1邹强1
作者信息
- 1. 马鞍山钢铁股份有限公司技术中心 安徽马鞍山 243000
- 折叠
摘要
Abstract
Optical microscopes and mechanical property tests were used to study the effects of different heating temperatures and holding times on the normalized microstructure and mechanical properties of EA1N axle steel,and a black box(heat-resistant temperature recorder)was used to test the temperature changes of the axle during the production process to carry out the process production test verification after optimization.The results show that after normalizing,the microstructure of the forged EA1N axle is refined,the ferrite content is reduced,the strength is slightly reduced,and the plasticity is significantly improved;normalizing is performed when the holding time is 60 minutes and the temperature is between 830℃ and 890℃,has little effect on the structure and performance of the EA1N axle,the grain size is 8～9,and the yield strength and tensile strength range are both less than 5MPa;when normalizing is selected at 860℃ and the holding time is between 0～120min,It has little impact on the structure and performance of the axle,which is composed of fine pearlite and ferrite,and the strength difference is less than 8MPa;after the EA1N axle heat treatment production test shortened the normalizing and holding time or even zero holding,all performance indicators met EN 13261:2020 skills requirement.关键词
EA1N车轴/正火/组织/力学性能Key words
EA1N axle/normalizing/structure/mechanical properties引用本文复制引用
余亚东,于文坛,史娜,姚三成,刘学华,邹强..正火工艺对EA1N车轴组织与性能的影响[J].金属加工（热加工）,2024,(6):35-40,6.
