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

作　　者：张维 李沛海 段移先 郑伟 梁哲啸 赵文才 Zhang Wei;Li Peihai;Duan Yixian;Zheng Wei;Liang Zhexiao;Zhao Wencai(Chongqing Changzheng Heavy Industry Co.,Ltd.,Chongqing 400083,China)

机构地区：[1]重庆长征重工有限责任公司,重庆400083

出　　处：《金属热处理》2024年第10期301-306,共6页Heat Treatment of Metals

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。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 

分 类 号：TG156.3[金属学及工艺—热处理]