某船用齿轮箱输入轴锻件横向淬火裂纹机理分析及数值模拟
Mechanism analysis and numerical simulation of transverse quenching crack in forgings for marine gear box input shaft
张维 1李沛海 1段移先 1郑伟 1梁哲啸 1赵文才1
作者信息
- 1. 重庆长征重工有限责任公司,重庆 400083
- 折叠
摘要
通过对42CrMoA船用齿轮箱输入轴锻件宏观结构分析和裂纹区域微观组织分析,结合淬火工艺的数值模拟,研究了淬火裂纹产生的原因.结果表明,船用齿轮箱输入轴锻件形状复杂,截面变化剧烈,淬火时易在台阶轴过渡部位产生应力集中,容易导致横向淬火裂纹的产生.
Abstract
By analyzing the macrostructure of 42CrMoA marine gear box input shaft forging and the microstructure of its crack region,the causes of quenching cracks were studied with the combination of numerical simulation of quenching process.The results show that the shape of the marine gear box input shaft forging is complex and with sharp changes in its cross section,thus the stress concentration occurs easily at the step shaft transition position and results in transverse quenching cracks during quenching.
关键词
42CrMoA钢/淬火裂纹/数值模拟/齿轮箱输入轴/失效分析Key words
42CrMoA steel/quenching crack/numerical simulation/gear box input shaft/failure analysis引用本文复制引用
出版年
2024
NETL
NSTL
万方数据