30CrMnSiA钢架圈零件裂纹产生原因分析
Analysis on crack causes of 30CrMnSiA steel ring support
董娜 1徐周珏 1李想军 1周武风 1陈启芳 1谭睿琪 1杨羲阳1
作者信息
- 1. 江西洪都航空工业集团,江西南昌 330000
- 折叠
摘要
某飞机零件架圈由30CrMnSiA钢板加工而成,该零件经过调质处理后,探伤检查发现多个零件的耳片处有裂纹产生.采用宏微观形貌分析、化学成分检测和力学性能检测等方法对该批次零件开裂原因进行了综合分析.结果表明,该架圈的开裂属于原材料质量问题,由于原材料退火不充分,存在严重偏析,导致局部硬度偏高,最终产生淬火裂纹.
Abstract
After quenched-tempered heat treatment,cracks were found in the ear pieces of an aircraft part of frame ring made of 30CrMnSiA steel plate.Comprehensive analysis of the cracked frame ring and raw material were carried out through macro and micro morphology examination,spectrum chemical composition analysis and mechanical properties test.The results show that the crack cause of the frame ring is a problem of raw material quality,due to insufficient annealing of raw materials,there is serious segregation,resulting in high local hardness and eventually quenching cracks.
关键词
钢板/偏析/热处理/淬火裂纹Key words
steel plate/segregation/heat treatment/quenching crack引用本文复制引用
出版年
2024
NETL
NSTL
万方数据