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与大家熟知的制砂机电(dian)(dian)(dian)镀(du)原(yuan)理相似，电(dian)(dian)(dian)铸(zhu)成型是利用电(dian)(dian)(dian)化学过程(cheng)中的阴(yin)极沉积现象来进行成型加工的，即在原(yuan)模—亡(wang)通过电(dian)(dian)(dian)化学方法(fa)沉积金(jin)属(shu)，然后(hou)分离以(yi)制(zhi)造(zao)或复制(zhi)金(jin)属(shu)制(zhi)品。但制(zhi)砂机电(dian)(dian)(dian)铸(zhu)与电(dian)(dian)(dian)镀(du)又有不同之处(chu)，电(dian)(dian)(dian)镀(du)时要求得到(dao)与基(ji)体结合牢固的金(jin)属(shu)镀(du)层，以(yi)达(da)到(dao)防护、装饰等目(mu)的。制(zhi)砂机而电(dian)(dian)(dian)铸(zhu)则(ze)要电(dian)(dian)(dian)待层与原(yuan)模分离，其厚度也远大于电(dian)(dian)(dian)镀(du)层。

电(dian)(dian)铸加(jia)(jia)工(gong)的(de)(de)原理在(zai)直流电(dian)(dian)源(yuan)(yuan)的(de)(de)作用下.阳极上(shang)的(de)(de)金(jin)属(shu)(shu)原子(zi)(zi)交出电(dian)(dian)子(zi)(zi)成为(wei)正(zheng)金(jin)属(shu)(shu)离(li)子(zi)(zi)进入镀液，并(bing)进一步在(zai)阴(yin)极上(shang)获(huo)得电(dian)(dian)子(zi)(zi)成为(wei)金(jin)属(shu)(shu)原子(zi)(zi)而沉积镀覆在(zai)阴(yin)极原模(mo)表(biao)面(mian)(mian)，阳极金(jin)属(shu)(shu)源(yuan)(yuan)源(yuan)(yuan)不(bu)断成为(wei)金(jin)属(shu)(shu)离(li)子(zi)(zi)补充溶解进入电(dian)(dian)诗(shi)镀液，保持电(dian)(dian)解液中金(jin)属(shu)(shu)离(li)子(zi)(zi)的(de)(de)质量(liang)分(fen)数基本(ben)不(bu)变(bian)，阴(yin)极原模(mo)上(shang)电(dian)(dian)铸层逐渐加(jia)(jia)厚，当制(zhi)砂机(ji)达到预定厚度时即可取出，设法与原模(mo)分(fen)离(li)，即可获(huo)得与制(zhi)砂机(ji)原模(mo)型面(mian)(mian)凹凸相反的(de)(de)电(dian)(dian)铸件(jian)。

制砂机电铸具有极高的复制精度和良好的机械性能，已(yi)在航空、仪器仪表(biao)、精(jing)密(mi)机(ji)(ji)械、棋具(ju)制造等方(fang)(fang)面发挥日益重要的作用。制砂(sha)机(ji)(ji)电(dian)(dian)(dian)铸(zhu)也是(shi)(shi)制造各种(zhong)筛网(wang)(wang)、滤网(wang)(wang)有效(xiao)的方(fang)(fang)法，因为它无需使用专用设备可获(huo)得各种(zhong)形状(zhuang)的孔眼，孔眼的尺寸大(da)数1—毫米，小5mm其中典型(xing)的是(shi)(shi)制砂(sha)机(ji)(ji)电(dian)(dian)(dian)铸(zhu)电(dian)(dian)(dian)动剃须刀(dao)的网(wang)(wang)罩(zhao)。网(wang)(wang)罩(zhao)的加工大(da)致如(ru)下，表(biao)示电(dian)(dian)(dian)动剃须刀(dao)多(duo)孔网(wang)(wang)罩(zhao)电(dian)(dian)(dian)铸(zhu)的制砂(sha)机(ji)(ji)工艺(yi)过(guo)程(cheng)。