彩色電泳漆作業標準

1、配比：

A、1升(sheng)透明電(dian)泳漆KLL－500＋20毫升(sheng)彩色(se)色(se)漿=1.02升(sheng)混合電(dian)泳漆

B、1.02升混合電泳漆＋5升線純水=6升彩色電泳漆工作液

2、配制方法：

A、將(jiang)KLL－5000電泳(yong)漆放入－備用(yong)槽中用(yong)工(gong)業(ye)攪拌(ban)機攪拌(ban)

B、邊攪拌邊入需(xu)求(qiu)量的彩色(se)色(se)漿

C、攪拌0.5小時混合均勻

D、邊(bian)攪拌邊(bian)加入需求(qiu)量純水(shui)的一半(ban)

E、充分混合(he)攪拌1小時

F、轉(zhuan)移到電泳槽(cao)中(zhong)，加入剩下的余量純水

G、開動(dong)循環攪(jiao)(jiao)拌過(guo)濾(lv)系(xi)統，充分混合攪(jiao)(jiao)拌24小(xiao)時(shi)

H、試電泳樣板

3、操作條件

A、電(dian)壓(ya)(ya)：25V-220V可(ke)先用低電(dian)壓(ya)(ya)操作，若膜感不可(ke)或銀珠不夠，再高電(dian)壓(ya)(ya)操作

B、時間：20－90S一般(ban)為30S

4、故障原因及解決方法：

A、浮(fu)斑 （A）電(dian)壓太(tai)高 （B）電(dian)導率太(tai)高

B、光澤度 （A）烤溫不夠(gou)，未熟化 （B）KLL－5000量不夠(gou)

從(cong)通(tong)電(dian)(dian)開始到電(dian)(dian)沉積結束所用的(de)時間(jian)(jian)稱為(wei)通(tong)電(dian)(dian)時間(jian)(jian)。在通(tong)電(dian)(dian)過程中，漆膜(mo)(mo)(mo)逐漸(jian)增厚，漆膜(mo)(mo)(mo)電(dian)(dian)阻值也隨(sui)之增加(jia)，一般情況下(xia)，約2-3分鐘后，涂(tu)(tu)裝電(dian)(dian)泳(yong)線(xian)標準，達到一定厚度.就幾乎不再增加(jia)了(le).所以，涂(tu)(tu)裝電(dian)(dian)泳(yong)線(xian)，只(zhi)要時間(jian)(jian)足夠，都能達到合(he)適的(de)厚度。延長通(tong)電(dian)(dian)時間(jian)(jian)，對(dui)膜(mo)(mo)(mo)厚的(de)增加(jia)意(yi)義(yi)不大。相反，時間(jian)(jian)過長.還會(hui)導(dao)致漆膜(mo)(mo)(mo)缺(que)陷(xian)產生，涂(tu)(tu)裝電(dian)(dian)泳(yong)線(xian)哪(na)家(jia)好，外觀變差.

如果被涂物面積很大且形狀較(jiao)復雜時，則(ze)可適當延(yan)長時間，這對提高泳(yong)透(tou)力是有一(yi)定幫助的。

當電泳結(jie)束后，被涂物(wu)應盡快從槽中取出。否則，漆膜(mo)將(jiang)發生(sheng)再(zai)溶解而變薄。

電泳設備線的導電裝置(zhi)介紹

在陽極電(dian)(dian)(dian)(dian)(dian)泳(yong)(yong)涂(tu)裝時(shi)，從整流器出來(lai)的(de)負極連(lian)接一(yi)組不銹鋼板，正極連(lian)接至工件，工件通(tong)(tong)電(dian)(dian)(dian)(dian)(dian)的(de)方式(shi)有兩種(zhong)，一(yi)種(zhong)是(shi)帶電(dian)(dian)(dian)(dian)(dian)入(ru)(ru)槽，涂(tu)裝電(dian)(dian)(dian)(dian)(dian)泳(yong)(yong)線設備廠，一(yi)種(zhong)是(shi)入(ru)(ru)槽后通(tong)(tong)電(dian)(dian)(dian)(dian)(dian)。兩個通(tong)(tong)電(dian)(dian)(dian)(dian)(dian)方法各(ge)有其優缺點：帶電(dian)(dian)(dian)(dian)(dian)入(ru)(ru)槽可(ke)(ke)縮短(duan)電(dian)(dian)(dian)(dian)(dian)泳(yong)(yong)槽長度，但漆膜表面易(yi)出現斑馬紋；入(ru)(ru)槽后通(tong)(tong)電(dian)(dian)(dian)(dian)(dian)，能夠(gou)避免前(qian)述(shu)的(de)涂(tu)膜外觀的(de)弊病，但電(dian)(dian)(dian)(dian)(dian)源系統較復雜(za)龐(pang)大，要求有可(ke)(ke)調(diao)時(shi)間的(de)漸升壓電(dian)(dian)(dian)(dian)(dian)路，以(yi)防止(zhi)電(dian)(dian)(dian)(dian)(dian)流脈沖(chong)損壞涂(tu)層(ceng)及電(dian)(dian)(dian)(dian)(dian)氣設備。

電(dian)(dian)沉積時，電(dian)(dian)壓(ya)(ya)(ya)從(cong)零伏(fu)升(sheng)到工作電(dian)(dian)壓(ya)(ya)(ya)的時間約需要10-20秒，整流(liu)器輸(shu)出脈動(dong)率(lv)很重要，電(dian)(dian)壓(ya)(ya)(ya)脈動(dong)幅度(du)不能超過平(ping)均直(zhi)流(liu)電(dian)(dian)壓(ya)(ya)(ya)的5%-10%。在滿負(fu)荷情況(kuang)下，電(dian)(dian)壓(ya)(ya)(ya)脈動(dong)率(lv)也應小于5%-10%。

電(dian)(dian)泳涂(tu)裝(zhuang)的(de)直流(liu)(liu)(liu)電(dian)(dian)源電(dian)(dian)壓(ya)應(ying)在(zai)0-350V范圍內可調，直流(liu)(liu)(liu)電(dian)(dian)流(liu)(liu)(liu)一般(ban)與涂(tu)裝(zhuang)面(mian)積及涂(tu)料的(de)庫侖效率(lv)有關，平均電(dian)(dian)流(liu)(liu)(liu)強度可按下式計算(suan)：（一般(ban)而言，電(dian)(dian)泳所需電(dian)(dian)流(liu)(liu)(liu)強度為10-20A/M2）