Umthelela we-conductivity ku-electrophoretic coating

I-Conductivity iyipharamitha yenqubo ebaluleke kakhulu ku-cathodic electrophoresis coating process. Inobudlelwane obuseduze kakhulu namandla okujikijela, futhi banethonya elikhulu ezintweni ze-electrophoretic, ukuzinza koketshezi lokugeza kanye nomphumela wokugcoba. Ngokuvamile, ukuphakama kwe-conductivity yokugeza ngopende we-electrophoresis, ukungena okuphezulu kopende kuzoba; kunalokho, kuphambene. Ngakho-ke, i-conductivity ye-tank liquid kufanele ilawulwe ngokuqinile ngaphakathi kohlu lwemithethonqubo yenqubo. Ngakho-ke kunqubo enkulu yokukhiqiza ye-electrophoretic coating, i-conductivity ye-electrophoretic coating yethonya?

I-Conductivity isho inani le-conductivity esikhaleni esingu-1cm sika-l wamasentimitha-skwele endaweni yesigxobo, ezikhathini zokumboza nge-electrophoretic ethangini, uketshezi lwe-UF, uketshezi lwesigxobo kanye nezinga lokuhamba elisetshenziswa emanzini ahlanzekile ukuveza izinga lobunzima the conductivity, kodwa futhi ewusizo ukwedlula ukumelana kagesi ukuveza. I-Conductivity iwukubuyelana kokumelana okuthile.

Ukumelana okuqondile (Ω - cm) = 6 izikhathi 10/conductivity, futhi conductivity kukalwa μS/cm noma uΩ- cm-1.

I-conductivity yoketshezi lwethangi likapende we-electrophoretic ihlobene nokuqinile koketshezi lwethangi, inani le-pH nokuqukethwe kwama-ion okungcola, njll. Ingenye yamapharamitha enqubo ebalulekile futhi kufanele ilawulwe ngaphakathi kwebanga elithile, usayizi wobubanzi uncike. ezinhlobonhlobo zamapende we-electrophoretic, kanye ne-conductivity ephansi noma ephezulu ye-tank liquid ayilungile, okuzothinta ngokuqondile ikhwalithi yomdwebo we-electrophoretic.

Umthelela we-conductivity ku-electrophoretic coating:

1. Ngokwezinga elithile, i-conductivity inganquma inani lepende elingasetshenziswa ku-workpiece ngokubhukuda ngezinga elithile.

2. I-conductivity encane izonciphisa kancane inani lepende ye-cathodic electrophoresis efakwe, ngokuphambene nalokho, ukuqhutshwa okuphezulu kuzokwandisa kancane inani lepende ye-cathodic electrophoresis efakwe.

3. I-tank liquid conductivity iphezulu kakhulu noma iphansi kakhulu, kodwa futhi kubukhulu befilimu yepende ye-electrophoresis, ukubukeka, ukungena kokubhukuda, njll., ikakhulukazi nge-tank liquid conductivity iyanda, ukungena kokubhukuda nakho kuyanda, ngakho-ke futhi kuqhathaniswa. ukujiya kwefilimu.

4. Ukusebenza okuphezulu ngokungavamile kwe-slurry kuvame ukubangelwa ukungcola okuphezulu noma i-pH ephansi, futhi kuhambisana nezinguquko ezingavamile kukhwalithi yefilimu enamathelayo, njengekhasi lewolintshi, amaphinikhodi, noma ukubuyela ekuhlakazweni kwe-serious . ..... nezinye izinto ezingavamile. Idinga ukuphathwa yi-ultrafilter enesistimu ye-anode.

Isingeniso esingenhla yi-conductivity kupende we-cathodic electrophoresis eminye yemiphumela. Ngokuvamile, ukuqhutshwa kwe-conductivity kufanele kulawulwe ngaphakathi kwebanga lika-1200±300μs/cm, ngoba ukuqhutshwa kwe-conductivity kuncike kakhulu kwikhwalithi yamanzi e-deionized ngaphambi kwe-electrophoresis kanye nokuvuselelwa kopende ethangini le-electrophoresis okufanele ligcinwe, ngakho-ke lapho ukuhanjiswa kuphezulu. , ingaphinda ikhishwe isixazululo se-ultrafiltration ukuze ilungiswe.

Izinhlobo ezahlukene ze-cathodic electrophoresis coatings nazo zinebanga elingcono kakhulu lokulawula ukuqhutshwa koketshezi lokugeza, ngokusekelwe ekuqhubekiseni izinguquko ezincane, njenge-± 100us / cm ngeke kuthinte ukusebenza kwefilimu yokugqoka, ngakho-ke uhla lokulawula jikelele ububanzi, ± 30us/cm. I-conductivity ye-liquid yokugeza iphezulu kakhulu noma iphansi kakhulu kubukhulu befilimu yokumboza, ukubukeka nokungena kwefilimu kunomthelela, ngokunyuka kwe-conductivity ye-liquid okugeza, ukungena kwefilimu nakho kuphakeme, ukushuba kwefilimu. iphinde ibe mkhulu ngokuqhathaniswa. Ubukhulu befilimu buzoba bukhudlwana. I-tank liquid conductivity idlula umkhawulo ophezulu wevelu eshiwo noma ephakeme, ingasetshenziswa ukufaka esikhundleni sesixazululo se-ultrafiltration yamanzi e-deionized ukunciphisa, isibonelo, ama-300t oketshezi lwethangi ngamanzi akhishwe esikhundleni se-20t yesisombululo se-ultrafiltration, ukuqhutshwa koketshezi lwethangi kungaba kuncishiswe ngo-± 100us/cm.