摘要
针对某型号行星架调质后在精加工过程中出现开裂的现象,进行行星架的材质及裂纹的宏观、微观、金相、夹杂物分析和硬度测试。判断出行星架材料成分符合要求,但是材料中心出现带状夹杂物,并且材料原始组织沿轧制方向形成带状组织,直接导致淬火过程中出现裂纹;同时该产品尺寸在45钢淬裂敏感尺寸范围内,加剧材料在淬火过程中裂纹的产生。此外,对行星架质量检测方法提出一些建议。
The appearance of cracks in a quenched and tempered planetary frame during finish machining was analyzed.Component analysis of materials, macroscopic and microscopic observation of cracks, inclusion morphology analysis andhardness test were carried out. The results show that the component quality of the material is eligible. Due to existence ofinclusion in the central part and the banded structure formed along the rolling direction, the formation of cracks is induced.The treatment of quenching and tempering is performed within the range of crack sensitive size in 45 steel, thus acceleratingthe formation of cracks. Meanwhile, some advices for the quality inspection methods of the planetary frames were put forward.
作者
尹德军
康学勤
刘云峰
郑坚
熊超
殷军辉
YIN Dejun, KANG Xueqin2, LIU Yunfeng3, ZHENG Jian, XIONG Chao, YIN Junhui(1 .Artillery Engineering Department, Army Engineering University, Shijiazhuang 050003, China; 2.School of Materials Science and Engineering, China University of Mining ＆ Technology, Xuzhou 221116, China; 3.Military Representative Office in 9804 Factory, Military Representative Bureau of Army in Chongqing, Qujing 655000, Chin)
出处
《兵器材料科学与工程》
CAS
CSCD
北大核心
2018年第2期94-97,共4页
Ordnance Material Science and Engineering
关键词
行星架
调质
裂纹
夹杂物
带状组织
planetary frame
quenching and tempering
crack
inclusion
banded structure
