铜线杆拉制过程中断线原因分析及解决措施  

Analysis and Solution Measures of Fracture During the Stretching Process of Copper Wire Rod

作　　者：满宏生 孙武林 温玉党 梁宗和 麻斯佳 王振琪 Man Hong-sheng;Sun Wu-lin;Wen Yu-dang;Liang Zong-he;Ma Si-jia;Wang Zhen-qi

机构地区：[1]金川集团精密铜材有限公司 [2]甘肃和宏新材料有限公司

出　　处：《金川科技》2024年第2期48-50,共3页Jinchuan Science and Technology

摘　　要：本文采用光学显微镜(OM)、硬度测量仪,研究挤压铜线杆在多道次拉制过程中发生断裂的原因,目的是解决生产过程中铜线杆断裂的现象。通过对拉断线杆断口宏观观察、剖面金相及硬度测量分析,发现造成线杆断裂的主要原因是由线杆中的夹杂物、中心孔洞、冷焊连接处力学性能不匹配造成的。The fracture reasons of extruded copper wire rod in the multi-pass drawing processes were investigated by using the optical microscope(OM)and hardness measuring instrument,aiming to solve the problem of copper wire rod fracture in production.Through macroscopic observation of the fracture of the drawn wire rod,profile metallography and hardness measurement analysis,it was found that the main reason of copper wire rod fracture lies in the inclusions inside,central holes,the mismatching of mechanical property of cold wielding joints.

关 键 词：铜线杆 断裂 冷焊 气孔 

分 类 号：TG1[金属学及工艺—金属学]