一、原理和特点脉冲放电时的电流上升率,对电极丝的损耗影响颇大.当脉冲很窄、放电重复频率很高时,每个放电脉冲造成的丝耗虽然很小,但是它的高频累加丝耗却是不可忽视的。因此,对于高频分组脉冲电源来说(图1),精加工的丝耗问题必须加以解决。线切割加工中采用正极性加工和快速走丝的非刚性电极丝以及乳化液。因此,企图利用穿孔加工中的“黑膜”效应,以降低电极丝损耗往往不能奏效。但是,我们可以采取一些人 First, the principle and characteristics Pulsed discharge current rise rate, the loss of the electrode wire considerable impact.When the pulse is very narrow, high discharge repetition frequency, each discharge pulse caused by the wire consumption is small, but its high Frequency cumulative consumption is not to be ignored. Therefore, for high-frequency packet pulse power (Figure 1), finishing the problem of wire consumption must be addressed. WEDM uses non-rigid electrode wire with positive polarity processing and rapid wire drawing as well as emulsion. Therefore, attempting to exploit the “black film” effect in perforation processing to reduce wire loss often fails to work. But we can take some people