Impembelelo ye-conductivity kwi-coating electrophoretic

I-Conductivity yiparameter yenkqubo ebaluleke kakhulu kwi-cathodic electrophoresis coating process. Inobudlelwane obusondeleyo kunye namandla okuphosa, kwaye banempembelelo enkulu kwiipropati ze-electrophoretic, ukuzinza kolwelo lokuhlambela kunye nomphumo wokugubungela. Ngokuqhelekileyo, ukuphakama kwe-conductivity ye-electrophoresis paint bath, ukuphakama kwepeyinti kuya kuba; ngokuchaseneyo, kuchasene. Ngoko ke, i-conductivity ye-tank liquid kufuneka ilawulwe ngokungqongqo phakathi koluhlu lwemigaqo yenkqubo. Ngoko kwinkqubo enkulu yokuvelisa i-electrophoretic coating, i-conductivity ye-electrophoretic coating yempembelelo?

I-Conductivity ibhekiselele kwisixa se-conductivity kwisithuba se-1cm ye-square yeesentimitha zomphezulu wepali, kwizihlandlo zokugquma kwe-electrophoretic kwitanki, ulwelo lwe-UF, ulwelo lwepali kunye nomgangatho wokuqhuba osetyenziswa emanzini acocekileyo ukubonisa iqondo lobunzima i-conductivity, kodwa iluncedo kunokumelana nombane ukuvakalisa. I-Conductivity yimvisiswano yokuchasana okuthe ngqo.

Ukuchasana okuthe ngqo (Ω - cm) = 6 amaxesha 10 / conductivity, kunye conductivity kulinganiswa μS / cm okanye uΩ- cm-1.

I-conductivity yolwelo lwetanki yepeyinti ye-electrophoretic inxulumene nezinto eziqinileyo zolwelo lwetanki, ixabiso le-pH kunye nomxholo we-ion zokungcola, njl njl. Yenye yeeparameters zenkqubo ebalulekileyo kwaye kufuneka ilawulwe ngaphakathi koluhlu oluthile, ubukhulu boluhlu buxhomekeke. kwiindidi zeepeyinti ze-electrophoretic, kunye ne-conductivity ephantsi okanye ephezulu ye-tank liquid ayilungile, eya kuchaphazela ngokuthe ngqo umgangatho wepeyinti ye-electrophoretic.

Impembelelo ye-conductivity kwi-electrophoretic coating:

1. Kwinqanaba elithile, i-conductivity inokugqiba inani lepeyinti enokuthi isetyenziswe kwi-workpiece ngokubhukuda kwinqanaba elithile.

2. I-conductivity encinci iya kunciphisa kancinci inani lepeyinti ye-cathodic electrophoresis efakwe, ngokuchaseneyo, ukuhanjiswa okuphezulu kuya kwandisa kancinci inani lepeyinti ye-cathodic electrophoresis efakwe.

3. I-tank liquid conductivity iphezulu kakhulu okanye iphantsi kakhulu, kodwa kunye nobukhulu befilimu yepeyinti ye-electrophoresis, imbonakalo, ukungena kokuqubha, njl., ngokukodwa kunye ne-tank liquid conductivity yanda, ukungena kokuqubha kukwandisiwe, ngoko ke kukwanjalo. ubukhulu befilimu.

4. I-conductivity ephezulu ngokungaqhelekanga ye-slurry idla ngokubangelwa ngumxholo wokungcola okuphezulu okanye i-pH ephantsi, kwaye ihamba kunye notshintsho olungaqhelekanga kumgangatho wefilimu yokugquma, efana ne-orange peel, i-pinholes, okanye ukubuyela kwi-dissolution ye-serious . ..... kunye nezinye izinto ezingaqhelekanga. Kufuneka ilawulwe yi-ultrafilter nge-anode system.

Intshayelelo engentla yi-conductivity kwipeyinti ye-cathodic electrophoresis ezinye zeziphumo. Ngokuqhelekileyo, i-conductivity kufuneka ilawulwe ngaphakathi kuluhlu lwe-1200± 300μs / cm, kuba i-conductivity ikakhulu ixhomekeke kumgangatho wamanzi adityanisiweyo phambi kwe-electrophoresis kunye nokuhlaziywa kwepeyinti kwitanki ye-electrophoresis ukuze igcinwe, ngoko ke xa i-conductivity iphezulu. , inokuphinda ikhutshwe isisombululo se-ultrafiltration ukuze ilungiswe.

Iindidi ezahlukeneyo ze-cathodic electrophoresis coatings nazo zinoluhlu olungcono kakhulu lolawulo lwe-conductivity yolwelo lokuhlambela, olusekelwe kwi-conductivity yotshintsho oluncinci, olufana ne-± 100us / cm aluyi kuchaphazela ukusebenza kwefilimu yokugubungela, ngoko ke uluhlu olubanzi lolawulo luyi. banzi, ± 30us/cm. ulwelo lokuhlambela lokuqhuba luphezulu kakhulu okanye luphantsi kakhulu kubunzima befilimu yokugquma, imbonakalo kunye nokungena kwefilimu kunempembelelo, kunye nokwanda kolwelo lokuhlambela, ukungeniswa kwefilimu kukwaphezulu, ubukhulu befilimu. ikwangqindilili noko. Ubunzima befilimu buya kuba bukhulu ngakumbi. I-tank fluid conductivity idlula umda ophezulu wexabiso elichaziweyo okanye eliphezulu, ingasetyenziselwa ukutshintsha isisombululo se-ultrafiltration yamanzi e-deionized ukunciphisa, umzekelo, i-300t yolwelo lwetanki ngamanzi adiyiniweyo endaweni ye-20t yesisombululo se-ultrafiltration, i-conductivity yolwelo lwetanki ingaba icuthwe nge ± 100us/cm.