Kuramo uburyo bwo kuvura hejuru

Imiyoboro isanzwe ikoreshwa muburyo bwo kuvura niokiside, electrophoreis, amashanyarazi, Dacromet ibyiciro bine, ibikurikira nugushushanya cyaneibara yubuso bwo kuvura ibyiciro byincamake.

• Umukara oxyde：

Igabanijwemo ubushyuhe bwicyumba hamwe nubushyuhe bwo hejuru bwirabura, kugeza ubushyuhe bwicyumba cyirabura nkurugero rwibikorwa ni: kwangirika kwimiti - gukaraba amazi ashyushye - gukaraba amazi akonje - gukuramo ingese no gukuramo aside - gusukura - kwirabura - gusukura -Amavuta menshi cyangwa hejuru yugaye. Ni urwego rwa firime ya oxyde ikorwa na sodium hydroxide na sodium nitrite ku bushyuhe buri hejuru ya dogere 100.

Ikintu nyamukuru kigizwe na firime ya oxyde ni tetraoxide yicyuma (Fe3C4), uburinganire bwa firime ni 0,6-1.5um gusa, kurwanya ruswa birashobora kuba bibi cyane, mugihe bitarenze amavuta cyangwa gufunga umunyu utabogamye utera amasaha 1-2 cyangwa arenga, hejuru yamavuta mumasaha 3-4 cyangwa arenga. Ibikoresho bito ntibikoresha ubu buryo mugihe ari screw. Bitandukanye no kugaragara kw'ibara, okiside y'umukara na zinc y'umukara hamwe na electrophoreque yumukara hafi, ariko ntibimurika nka zinc y'umukara na electrophoreque y'umukara.

• Galvanize：

Amashanyarazi yumukara afite ubwoko bubiri bwa zinc yumukara na nikel yumukara, ihame ryibikorwa ni bimwe, gusa ni ugutanga igisubizo cya electroplating na nyuma yo kuvurwa hamwe na lattice zitandukanye cyangwa igisubizo cya passivation. Zinc ikora muburyo bwa chimique, yoroshye okiside kandi yijimye mwikirere, hanyuma amaherezo ikabyara 'ingese yera' yangirika, isahani ya zinc nyuma yo kuvura chromate kugirango itwikire igipande cya zinc kuri firime ihindura imiti, kuburyo ibyuma bikora biri muburyo bworoshye, ni passivasi ya zinc. Filime ya Passivation uhereye kubigaragara irashobora kugabanywamo passivasi yera (zinc yera), ubururu bwerurutse (zinc yubururu), passivation yumukara (zinc yumukara), passiyo yicyatsi kibisi (icyatsi kibisi) nibindi.

• Electrophoresis Umukara：

Kwemeza uburyo bwa electrochemiki yo kubitsa uduce duto twa colloidal ya resin organique kubice kugirango habeho igipande kama kama cyamabara atandukanye, umukara wa electrophoreis ukoreshwa cyane muruganda, fata inzira yumukara nkurugero: gutesha agaciro-gusukura-fosifati-electrophoreis irangi-yumisha. Irashobora kugabanywa muri anodic electrophoresis (resin ionisation mo ion negatif) na cathodic electrophoresis (resin electrophoreis mo ion nziza), kandi uburyo bwo gusiga amarangi ugereranije nibikorwa byubwubatsi nibyiza, kwanduza no kwangiza ibidukikije kugirango bigabanye kurwanya imikorere yumunyu utabogamye mumasaha 300 cyangwa arenga, ibiciro hamwe no kurwanya ruswa hamwe na Dacromet birasa.

• Zinc yera：

Amashanyarazi ni: gutesha agaciro - gukora isuku - gukora acide nkeya - electroplating zinc - gusukura - umusatsi wa passivation yera - gusukura - gukama, no gutandukanya umukara wa zinc ntaho bitandukaniye na lat rack na passivation ibisubizo bitandukanye, passivisation yera ni firime ya zinc oxyde itagaragara, hafi ya chromium, bityo rero kurwanya ruswa kurwego rwibanze rwa zinc, ibara rya zinc, amabara ya zinc ikigereranyo cyumuti wa passivation kirashobora gukorwa kugirango urwanye umunyu utabogamye mumasaha agera kuri 20.

Kuberako ubwoko bwa zinc plaque yubwoko bwo gutunganya imigozi yo gukora ibizamini byo gutera umunyu utabogamye byabanje kugaragara hejuru yisahani ya ruswa yera, ibintu bitukura byumutuku biri mumasaha agera kuri 40, bityo kurwanya zinc byangirika biruta nikel yera. Kugaragara na nikel yera ugereranije numwijima, zinc yera kumabara yumwimerere ya zinc icyatsi kibisi-cyera, na nikel yera ugereranije nibitandukaniro rinini.

• Nickel Yera：

Igikorwa cyo gufata ni: gutesha agaciro - gukora isuku - gukora intege nke za acide - gusukura - munsi yumuringa - gukora - gusukura - electroplating nikel- Gusukura - passivation - gusukura - gukama - cyangwa gufunga, hamwe na nikel yumukara birasa cyane cyane, cyane cyane kubishakira ibisubizo biratandukanye, sulfide nkeya ya zinc kandi ifatanya.Nikel nikintu cyiza cya silver-cyera, kugirango kibe cyiza, kizahuza nikel. Kurwanya ruswa hamwe na nikel yumukara ntaho bitandukaniye cyane namasaha 6-12, inzira yinganda rusange nazo zizaba zirenze amavuta cyangwa zifunze, nko gutekereza ku ngaruka ziterwa na ruswa ku bice bya pulasitike byibikoresho byinjira bigomba gukoreshwa mu rwego rwo kugenzura niba hejuru y’amavuta.

• Zinc yubururu, icyatsi kibisi：

Inzira irasa nkaho kuri zinc yera, zinc yubururu ni passivated zinc oxyde ya firime irimo 0.5-0.6mg / dm2 ya chromium trivalent. Icyatsi kibisi, kizwi kandi nka acide-acide eshanu, gishobora kubona icyatsi kibisi-icyatsi kibisi, igisubizo cya passivation kirimo ion ya fosifate, ibivamo ibyatsi byatsi-icyatsi kibisi ni firime igoye, yubatswe muburyo bukomeye bwo kurinda chromates na fosifate.

Kurwanya kwangirika kwayo, zinc yubururu iruta zinc yera, mugihe icyatsi kibisi cyiza kuruta zinc yubururu. Ibara rya zinc yubururu ni ubururu buke na zinc yera yegeranye ninganda kugirango ikoreshe byinshi, iyanyuma irashobora kandi gukoreshwa nkigishushanyo mbonera cyibicuruzwa mugihe ubundi buryo bwa screw.

• Zinc enameled (chimie)：

Mu cyiciro cya galvanizing cyibikorwa bya zinc y'amabara ni byiza kurwanya ruswa, inzira yayo ya pasivisiyasi yamabara ni: gusya - gusukura - 2% - 3% acide ya nitric ivuye mumucyo - gusukura - passiyo ya chromium nkeya - gusukura -Gusaza. Ubushyuhe bwa Passivation buri hasi cyane, firime iratinda, firime yera. Ubushyuhe bwo hejuru, firime irabyimbye kandi irekuye, ntabwo ifatanye neza. Nibyiza kugenzura kuri dogere 25 kugirango tumenye neza ko ibara rimwe riboneka mugihe runaka.

Nyuma ya passivation, igomba gutekwa no gusaza kugirango irusheho gukomera no kwangirika kwa firime. Amabara ya zinc yashizwemo amabara ukoraho hepfo yo kurwanya umuti utagira aho ubogamiye mumasaha arenga 48, kugenzura neza birashobora gukorwa amasaha arenga 100.

• Dacromet：

Ni impfunyapfunyo nubusobanuro bwa DACROMET, ni ukuvuga flake zinc ishingiye kuri chromium umunyu urinda, nanone bita zinc-aluminium. Inzira y'ibanze ni: gutesha agaciro - gutesha agaciro - gutwikira - gushyushya - gucumura - gukonja. Muri rusange inzira izaba ifite inshuro 2-4 kuva gutwikiriye kugeza gukonjesha, kubera ko imigozi ifite igipfundikizo nko kugera ku mubyimba runaka igomba gukorwa inshuro nyinshi.

Imiterere iri hejuru yicyuma, yashizwemo nigice cyumuti wa Dacromet (nukuvuga, urimo umunzani wa zinc, aluminium [umunzani muri rusange ingana na 0.1-0.2X10-15 microne] Cr03 nibintu kama kama kama kama yumuti ukwirakwizwa cyane wamazi), hamwe na 300 ° C cyangwa rero kubika ubushyuhe bitetse mugihe runaka, amavuta ya Dacromet ya chromium ya chromium yagabanutse. (nCr03) mCr203).

Kurwanya ruswa ni byiza cyane umunyu utagira aho ubogamiye kugeza kumasaha 300 cyangwa arenga, ibibi byo gutwikirwa ntabwo ari kimwe, umwanya muto wa 5-10um, umwanya muremure wa 40um cyangwa urenga, bizagira ingaruka ku burebure bwa diameter ya screw, bityo imashini ikubita imashini hamwe na screw hamwe na diameter ntoya ya screw nibyiza cyane kudakoresha inzira ya Dacromet.