内螺纹铜管表面白道和暗纹形成机理及防控研究  

Study on Formation Mechanism and Prevention of White and Dark Lines on Surface of Inner Grooved Copper Tube

作　　者：万胤明 胡春晖 顾芝菡 倪志星 黄红伟 刘俊伟[2] Wan Yinming;Hu Chunhui;Gu Zhihan;Ni Zhixing;Huang Hongwei;Liu Junwei(JCC Processing Business Division,Nanchang 330096,China;School of Materials Science and Engineering,Nanchang Hangkong University,Nanchang 330096,China)

机构地区：[1]江西铜业加工事业部,江西南昌330096 [2]南昌航空大学材料科学与工程学院,江西南昌330096

出　　处：《有色金属加工》2022年第6期22-25,共4页Nonferrous Metals Processing

基　　金：江西省科技厅科技创新基地建设项目(20202ZDH02063);江西省重大科技研发专项(20212AAE01003)。

摘　　要：对内螺纹铜管表面白道和暗纹缺陷进行了显微观察,分析研究了其形成机理,并提出了防控此类缺陷产生的措施。结果表明,内螺纹铜管的白道和暗纹缺陷实际是许多细小沟槽、折皱、隆起和折叠的聚集。螺纹芯头微细沟槽表面粗糙度不均、表面硬度不够、模具磨损、润滑不良是内螺纹铜管白道和暗纹缺陷形成的主要原因。提高模具表面硬度和耐磨性,提升润滑效能可以防控内螺纹铜管白道和暗纹缺陷。In this paper,the defects of white and dark lines on the surface of inner threaded copper tube are observed by microscope,and the forming mechanism is analyzed,and the prevention and control measures are proposed.The results show that the defects of white and dark lines in internal threaded copper tube are actually the aggregation of many small grooves,folds,ridges and folds.Uneven surface roughness,insufficient surface hardness,die wear and poor lubrication are the main reasons for the formation of white and dark lines defects in the inner threaded copper tube.Improving the surface hardness and wear resistance of the die and improving the lubrication efficiency can prevent and control the defects of white and dark lines of the inner threaded copper tube.

关 键 词：内螺纹铜管 白道 暗纹 缺陷 表面 

分 类 号：TG146.1[一般工业技术—材料科学与工程]