山东数控切割机由前苏联拉扎联科夫妇研究开关触点受火花放电腐蚀损坏的现象和原因时，发现电火花的瞬时高温可以使局部的金属熔化、氧化而被腐蚀掉，从而开创和发明了电火花加工方法。数控切割只能搞薄料，厚的还只能用线切割，数控切割生产小批量产品。

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