摘要
Φ7.94mmTP2内螺纹铜管常常出现扁管、夹杂以及无明显伤质量问题,通过显微观察、模拟放大缺陷等手段,分析了Φ7.94mmTP2内螺纹铜管扁管、夹杂以及无明显伤的探伤缺陷形成的原因,并制定了防治措施。研究结果表明:铜管表面扁管与在线成型的收线方式以及行车吊运有关;夹杂与铜管旋压成型的外润滑拉拔油含杂有直接关联;无明显伤与铜管管坯表面强度有密切关系,减小管坯的晶粒度大小可以改善无明显伤缺陷。
Φ7.94mmTP2 internally threaded copper pipes often have flat tubes,inclusions and no obvious damage quality problems.Through microscopic observation,simulation and enlargement of defects,etc.,analysis ofΦ7.94mmTP2 internally threaded copper tubes,inclusions and no obvious damage The reason for the formation of flaw detection defects,and formulated preventive measures.The research results show that the flat tube on the surface of the copper tube is related to the wire take-up method of in-line forming and crane transportation;the inclusions are directly related to the external lubrication drawing oil of the copper tube spinning forming;there is no obvious damage to the surface of the copper tube billet The strength is closely related,and reducing the grain size of the tube blank can improve the defect without obvious damage.
作者
叶郦峰
李志清
曾何生
黄世新
YE Li-feng;LI Zhi-qing;ZENG He-Sheng;HUANG Shi-xin(Processing Division,Jiangxi Copper Co.,Ltd.,Nanchang 330096,China)
出处
《世界有色金属》
2021年第19期201-202,共2页
World Nonferrous Metals
关键词
内螺纹铜管
扁管
夹杂
无明显伤
缺陷
internally threaded copper tube
flat tube
inclusion
no obvious damage
defect
