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四川读者汪进来信说,要求介绍提高拉线模寿命的经验。一、概述拉线模寿命直接影响拉拔铜、铝导电单线工序的产量和质量。以拉制φ2.58mm铜单线为例,在设备运转和工作状态都正常的条件下,表1示出4只硬质合金成品拉线模单模拉线量,其平均寿命仅为771.25kg。班产约7t左右铜单线,每班停车换模次数频繁。总换模辅助时间长,生产效率难于提高,且线模一旦失效而未及时检查,则出现线径超差及拉毛等问题,质量控制困难。同时,由于寿命短,修模次数相应增多,而修模劳动强度大,周期长,使修模工
Wang readers from Sichuan, said the letter, asked to introduce the experience of improving the life of pull-line model. First, an overview Pull die life directly affect the drawing of copper, aluminum conductive single-line production and quality. To pull φ2.58mm copper single wire, for example, the equipment is running and working conditions are normal conditions, the table 1 shows the finished product of four cemented carbide pull the line mode, the average life expectancy is only 771.25kg. About 7t copper class about a single line, each shift frequency shift mode frequently. Overall mold change aids a long time, the production efficiency is difficult to improve, and failure to check the mold line once in a timely manner, the emergence of ultra-poor diameter and hairline and other issues, quality control difficulties. At the same time, due to short life span, a corresponding increase in the number of mold repairs, and labor-intensive repair mold, long cycle, so repair workers