近几年来,国内一些厂家纷纷从西德、瑞士、日本等国引进了以铜合金丝为电极丝的慢速走丝线切割机床。这类引进线切割机床与国内普遍使用的以钼丝为电极丝的快速走丝线切割机床相比具有明显的优点,第一是快速走丝机床因钼丝循环重复使用,引起丝经变细和不均匀,影响被切割模具尺寸精度,仅为0.01～0.015mm,由于丝径发生 In recent years, some domestic manufacturers have introduced the slow wire cutting machine tool with copper alloy wire as the electrode wire from West Germany, Switzerland, Japan and other countries. The introduction of this type of wire cutting machine and the popular use of molybdenum wire electrode wire for fast wire cutting machine compared to the obvious advantages, the first is the rapid walking wire machine because of repeated use of molybdenum wire cycle, causing the wire thinning and Uneven, affect the dimensional accuracy of the die being cut, only 0.01 ~ 0.015mm, due to the wire diameter