GCr15钢轴承套圈内表面开裂原因  

Cause of cracking on the inner surface of GCr15 steel bearing ring

作　　者：刘月云 杨娥 周杨 彭先锦 LIU Yueyun;YANGE;ZHOU Yang;PENGXianjin(Hubei Key Laboratory,High Quality Special Steel,Daye Special Steel Co.,Ltd.,Huangshi 435001,China)

机构地区：[1]大冶特殊钢有限公司高品质特殊钢湖北省重点实验室,黄石435001

出　　处：《理化检验（物理分册）》2023年第11期56-58,共3页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：某GCr15钢轴承套圈经机加工后,发现其套圈内表面发生开裂。采用宏观观察、化学成分分析、扫描电镜及能谱分析等方法对开裂套圈进行分析。结果表明:在生产套圈过程中,穿孔顶头发生破碎,产生的异物颗粒嵌入基体,破坏了基体的连续性,最终导致套圈内表面发生开裂。Cracks were found on the inner surface of a GCrl5 steel bearing ring after machining.Macroscopic observation,chemical composition analysis,scanning electron microscopy and energy spectrum analysis were used to analyze the cracked rings.The results show that during the production process of the ring,the piercing plugs broke and foreign particles embedded in the matrix,disrupting the continuity of the matrix and ultimately led to cracking on the inner surface of the ring.

关 键 词：GCR15钢 轴承套圈 开裂 穿孔顶头 异物颗粒 

分 类 号：TG115.2[金属学及工艺—物理冶金] TB31[金属学及工艺—金属学]