慢走絲機床屬于高精密加工機床，可以實現幾個μm的加工精度，表面粗糙度Ra可達<0.2μm。但有些模具工廠在使用慢走絲機床時，不注意細節，以為好機床隨隨便便就能實現高效的高精密加工。事實上，精密加工務必樹立精密加工概念，在加工過程才能保證加工更加精準。

西部慢走絲的工藝前提：

　　慢走(zou)絲機床都(dou)帶有工藝參(can)數庫，其工藝參(can)數一(yi)般都(dou)是在具體條(tiao)件下(xia)（如工件材料、電極(ji)絲、溫(wen)度20±3℃、濕度40-80%等）試(shi)驗得出的。如果下(xia)述條(tiao)件發生變化或(huo)者不能達(da)標(biao)，可能會導致(zhi)加工結果產(chan)生偏(pian)差(cha)。

　　1）沖水規范(fan)：按標(biao)準參數加工時(shi)，水壓表指示值(zhi)(zhi)與理論值(zhi)(zhi)相比較后，差值(zhi)(zhi)應小于(yu)0.5bar；

　　2）工件與噴嘴間隙：0.05~0.10mm；

　　3）表面粗糙度要求Ra≧0.35μm時可選用注重效率型的切割絲（推薦使用與機床隨機所配相同類型的絲），當Ra<0.35μm時，為了獲得好的加工表面，選用注重表面的鍍鋅絲進行加工；

　　4）精加工時，請保證水μS<10，尤其在精修加工時，請按工藝參數要求。必要時，請更換樹脂或純凈水。

西部慢走絲的工作原理：

　　慢(man)走絲(si)(si)是利(li)用連(lian)續移動的細金(jin)屬(shu)(shu)絲(si)(si)（稱(cheng)為電(dian)(dian)(dian)(dian)極(ji)絲(si)(si)）作電(dian)(dian)(dian)(dian)極(ji)，對(dui)工(gong)(gong)件進(jin)行(xing)脈沖火(huo)(huo)花(hua)放(fang)電(dian)(dian)(dian)(dian)蝕除金(jin)屬(shu)(shu)、切割成型的一(yi)(yi)種(zhong)加工(gong)(gong)機(ji)床。慢(man)走絲(si)(si)加工(gong)(gong)時(shi)在線電(dian)(dian)(dian)(dian)極(ji)與(yu)工(gong)(gong)件之間(jian)(jian)(jian)(jian)存在的疏松接觸(chu)式輕(qing)壓放(fang)電(dian)(dian)(dian)(dian)現(xian)象。當(dang)柔性(xing)電(dian)(dian)(dian)(dian)極(ji)絲(si)(si)與(yu)工(gong)(gong)件接近到(dao)通常(chang)認(ren)為的放(fang)電(dian)(dian)(dian)(dian)間(jian)(jian)(jian)(jian)隙(xi)(例如8～10μm)時(shi)，并不發(fa)生火(huo)(huo)花(hua)放(fang)電(dian)(dian)(dian)(dian)，甚(shen)至當(dang)電(dian)(dian)(dian)(dian)極(ji)絲(si)(si)已接觸(chu)到(dao)工(gong)(gong)件，從顯(xian)微(wei)鏡中已看(kan)不到(dao)間(jian)(jian)(jian)(jian)隙(xi)時(shi)，也(ye)常(chang)常(chang)看(kan)不到(dao)火(huo)(huo)花(hua)，只有(you)當(dang)工(gong)(gong)件將電(dian)(dian)(dian)(dian)極(ji)絲(si)(si)頂彎并偏移一(yi)(yi)定距(ju)離(幾微(wei)米到(dao)幾十微(wei)米)時(shi)才發(fa)生正常(chang)的火(huo)(huo)花(hua)放(fang)電(dian)(dian)(dian)(dian)。此時(shi)線電(dian)(dian)(dian)(dian)極(ji)每進(jin)給1μm，放(fang)電(dian)(dian)(dian)(dian)間(jian)(jian)(jian)(jian)隙(xi)并不減少1μm，而是電(dian)(dian)(dian)(dian)極(ji)絲(si)(si)增加一(yi)(yi)點線間(jian)(jian)(jian)(jian)張力，工(gong)(gong)件則增加一(yi)(yi)點側向(xiang)壓力，顯(xian)然，只有(you)電(dian)(dian)(dian)(dian)極(ji)絲(si)(si)和(he)(he)工(gong)(gong)件之間(jian)(jian)(jian)(jian)保持一(yi)(yi)定的輕(qing)微(wei)接觸(chu)壓力后才能形成火(huo)(huo)花(hua)放(fang)電(dian)(dian)(dian)(dian)。據此認(ren)為在電(dian)(dian)(dian)(dian)極(ji)絲(si)(si)和(he)(he)工(gong)(gong)件之間(jian)(jian)(jian)(jian)存在著(zhu)某種(zhong)電(dian)(dian)(dian)(dian)化學(xue)產生的絕(jue)緣(yuan)薄膜介質

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