「三價鉻」三價鉻故障之二對應原因以及解決方法-仁昌分享
今天分享的是三價鉻鍍槽出現高電流密(mi)度區(qu)漏鍍和鍍層色澤(ze)暗、絨(rong)毛狀條紋(wen)時時什么原因以及維護方法(fa)。
出現這種故障的(de)原因是鍍(du)(du)(du)(du)液(ye)中(zhong)鐵(tie)(tie)(tie)含(han)(han)(han)量(liang)(liang)過(guo)低或過(guo)高(gao)。當(dang)三價(jia)(jia)鉻電鍍(du)(du)(du)(du)鉻液(ye)中(zhong)沒有鐵(tie)(tie)(tie)離子時,在高(gao)電流密度區(qu)會出現漏鍍(du)(du)(du)(du)的(de)現象(xiang),需要將三價(jia)(jia)鉻鍍(du)(du)(du)(du)液(ye)的(de)鐵(tie)(tie)(tie)含(han)(han)(han)量(liang)(liang)控(kong)制在50m9/L~100m9/L范圍內。通常在鍍(du)(du)(du)(du)液(ye)中(zhong)鐵(tie)(tie)(tie)含(han)(han)(han)量(liang)(liang)低時,就補充含(han)(han)(han)鐵(tie)(tie)(tie)的(de)添加劑,并嚴(yan)格控(kong)制加入量(liang)(liang)。當(dang)鍍(du)(du)(du)(du)液(ye)中(zhong)鐵(tie)(tie)(tie)含(han)(han)(han)量(liang)(liang)高(gao)時(鐵(tie)(tie)(tie)含(han)(han)(han)量(liang)(liang)>150m9/L),使得(de)鉻鍍(du)(du)(du)(du)層(ceng)色澤變得(de)暗黑;當(dang)鍍(du)(du)(du)(du)液(ye)中(zhong)鐵(tie)(tie)(tie)含(han)(han)(han)量(liang)(liang)>500m9/L時,鉻鍍(du)(du)(du)(du)層(ceng)出現絨毛狀條(tiao)紋。
去除鍍(du)液(ye)(ye)中(zhong)的鐵含(han)量高(gao)的方(fang)法有:①長(chang)時(shi)間低電(dian)(dian)(dian)流電(dian)(dian)(dian)解(電(dian)(dian)(dian)流密度l.6A/ dm2~4.9A/dm2),電(dian)(dian)(dian)解板需要鍍(du)鎳,以避(bi)免電(dian)(dian)(dian)解板被腐蝕而重新污(wu)染鍍(du)液(ye)(ye);②采用專用的離子交換樹脂(zhi)吸(xi)附去除三(san)價鉻(ge)鍍(du)液(ye)(ye)中(zhong)鐵的高(gao)濃(nong)度。
【文章(zhang)內容】「三(san)價(jia)鉻」三(san)價(jia)鉻故障之(zhi)高電流密度區漏鍍和鍍層(ceng)色澤暗、絨毛狀條紋(wen)-仁昌分享(xiang)