前(qian)處(chu)理(li)(li)有(you)手動(dong)簡易工(gong)藝和主(zhu)動(dong)前(qian)處(chu)理(li)(li)工(gong)藝,后者又分主(zhu)動(dong)噴(pen)(pen)(pen)淋和主(zhu)動(dong)浸噴(pen)(pen)(pen)兩(liang)種(zhong)工(gong)藝。工(gong)件在噴(pen)(pen)(pen)粉之前(qian)必須進行(xing)外(wai)表處(chu)理(li)(li)去油(you)(you)去銹。在這一(yi)工(gong)段所用藥液較(jiao)多,主(zhu)要(yao)有(you)除銹劑(ji)、除油(you)(you)劑(ji)、表調劑(ji)、磷化劑(ji)等(deng)等(deng)。 在(zai)涂裝(zhuang)生(sheng)產(chan)線前處(chu)理(li)(li)工段或(huo)車間,要注意(yi)的就(jiu)是擬定(ding)必(bi)要的強(qiang)酸強(qiang)堿購買、運送、保管和(he)使用準則,給工人供給必(bi)要的保護著裝(zhuang),安全可(ke)靠的盛(sheng)裝(zhuang)、搬運、裝(zhuang)備(bei)器具(ju),以及擬定(ding)萬(wan)一(yi)產(chan)生(sheng)事(shi)故時的緊迫(po)處(chu)理(li)(li)辦法、搶救(jiu)方法。其次(ci),在(zai)涂裝(zhuang)生(sheng)產(chan)線前處(chu)理(li)(li)工段,因為存在(zai)一(yi)定(ding)量的廢氣、廢液等三廢物質,所以在(zai)環保辦法方面,必(bi)須(xu)裝(zhuang)備(bei)抽氣排(pai)氣、排(pai)液和(he)三廢處(chu)理(li)(li)設備(bei)。 前(qian)(qian)處(chu)(chu)理(li)過的(de)(de)工(gong)件(jian)質量,因為前(qian)(qian)處(chu)(chu)理(li)液及涂裝生(sheng)產線工(gong)藝流程不盡相同,其質量當有差異(yi)。處(chu)(chu)理(li)較好的(de)(de)工(gong)件(jian),外(wai)表(biao)(biao)油、銹去盡,為了(le)防止(zhi)短(duan)時間內再次生(sheng)銹,一(yi)般(ban)應在前(qian)(qian)處(chu)(chu)理(li)后幾道工(gong)序,進行(xing)磷化(hua)或(huo)鈍(dun)化(hua)處(chu)(chu)理(li):在噴粉前(qian)(qian),還(huan)應將已磷化(hua)的(de)(de)工(gong)件(jian)進行(xing)干燥(zao),去其外(wai)表(biao)(biao)水分。小批量單件(jian)生(sheng)產,一(yi)般(ban)采(cai)(cai)用天(tian)然晾(liang)(liang)干、晾(liang)(liang)干、風干。而關(guan)于(yu)大批量之(zhi)流水作業,一(yi)般(ban)采(cai)(cai)取低溫烘干,采(cai)(cai)用烘箱或(huo)烘道。