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什么是电镀加工

2020-11-24 05:01:11

 电镀(du)加(jia)工是利用(yong)(yong)电(dian)解方法对零件(jian)(jian)进行表面加工(gong)的(de)(de)一种工(gong)艺。电(dian)镀(du)时零件(jian)(jian)为阴极,镀(du)液(ye)中的(de)(de)金属离(li)子在(zai)(zai)直(zhi)流电(dian)的(de)(de)作用(yong)(yong)下沉积在(zai)(zai)零件(jian)(jian)表面形成(cheng)均匀、致密的(de)(de)金属镀(du)层(ceng)。塑(su)胶电(dian)镀(du)必需的(de)(de)条(tiao)件(jian)(jian)是外加直(zhi)流电(dian)源(yuan),镀(du)液(ye)和镀(du)件(jian)(jian)及阳极组成(cheng)的(de)(de)电(dian)解装置。


塑胶电(dian)镀(du)(du)加工的(de)(de)(de)目的(de)(de)(de)是通过改变零(ling)件表面(mian)的(de)(de)(de)外观和(he)物理(li)化学性(xing)(xing)质,达到装饰性(xing)(xing)、耐(nai)蚀性(xing)(xing)和(he)耐(nai)磨(mo)性(xing)(xing)等各(ge)种(zhong)技术性(xing)(xing)能(neng)(neng)。还可(ke)以根据具体的(de)(de)(de)工艺要(yao)求施加某种(zhong)功能(neng)(neng)性(xing)(xing)镀(du)(du)层,如焊(han)接性(xing)(xing)、电(dian)能(neng)(neng)性(xing)(xing)、磁能(neng)(neng)性(xing)(xing)、光能(neng)(neng)性(xing)(xing)镀(du)(du)层等,充分扩(kuo)大金(jin)属材料的(de)(de)(de)应(ying)用范围。

电镀加工

电(dian)镀已(yi)经(jing)遍及国民经(jing)济各(ge)个生产和(he)科学领域中。尤其在机器(qi)制造、国防、通讯、交(jiao)通、轻工业等(deng)行业已(yi)成(cheng)为不可缺(que)少的(de)一部分。在机械生产中电(dian)镀广泛应用于(yu)(yu)提高(gao)各(ge)种(zhong)(zhong)轴类(lei)(lei)、套(tao)类(lei)(lei)等(deng)零部件的(de)耐磨、抗腐蚀性能:在使用于(yu)(yu)各(ge)种(zhong)(zhong)高(gao)压垫圈的(de)密封防腐以(yi)及各(ge)种(zhong)(zhong)机械磨损和(he)加工件的(de)修复尺(chi)寸等(deng)方而起到(dao)越(yue)来(lai)越(yue)重(zhong)要的(de)作用。


电(dian)镀(du)(du)(du)(du)(du)是制造业的基础(chu)工(gong)(gong)艺之一,由于塑胶电(dian)镀(du)(du)(du)(du)(du)加(jia)工(gong)(gong)所特有(you)的技(ji)术经济(ji)优势,不仅很难被(bei)完全取(qu)代,而且(qie)在电(dian)子、钢(gang)铁等(deng)领(ling)域还不断有(you)新的突破。改(gai)革开放以后(hou),电(dian)镀(du)(du)(du)(du)(du)工(gong)(gong)业也进入(ru)快速发(fa)展期,大批境外(wai)厂家(jia)进入(ru)中国长三角(jiao)(jiao)、珠(zhu)三角(jiao)(jiao)、环渤海(hai)等(deng)经济(ji)发(fa)达、交(jiao)通(tong)便捷的地区,其基础(chu)工(gong)(gong)艺提(ti)供方电(dian)镀(du)(du)(du)(du)(du)企业也随之涌进。电(dian)镀(du)(du)(du)(du)(du)加(jia)工(gong)(gong)的应用热点由机(ji)械、轻工(gong)(gong)等(deng)行业转移(yi)(yi)至(zhi)电(dian)子、钢(gang)铁行业,由单纯防护装饰镀(du)(du)(du)(du)(du)层向功能性镀(du)(du)(du)(du)(du)层转移(yi)(yi),由相对分散向逐渐(jian)整合转移(yi)(yi)。而且(qie)电(dian)镀(du)(du)(du)(du)(du)的种类也在不断增加(jia),从最早的镀(du)(du)(du)(du)(du)金(jin)、镀(du)(du)(du)(du)(du)银、镀(du)(du)(du)(du)(du)铜到后(hou)来(lai)镀(du)(du)(du)(du)(du)镍(nie)、镀(du)(du)(du)(du)(du)锌(xin)、镀(du)(du)(du)(du)(du)硬铬、镀(du)(du)(du)(du)(du)锡(xi)。


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