Uburyo bwo gutunganya ubuso bwa screw

Imiti ikoreshwa cyane mu gutunganya ubuso niogisijeni, electrophoresis, electroplating, Dacromet ibyiciro bine, ibi bikurikira ahanini ni uguhinduraibara y'uburyo bwo gutunganya ubuso bw'incamake y'ishyirwa mu byiciro.

• Umukara ogiside:

Bigabanyijemo ibice bibiri: kwirabura mu bushyuhe bw'icyumba no kwirabura mu bushyuhe bwo hejuru, urugero rw'ibikorwa ni: gukuraho amavuta mu binyabutabire – gukaraba mu mazi ashyushye – gukaraba mu mazi akonje – gukuraho ingese no gukata aside – gusukura – kwirabura mu mazi ashyushye – gusukura – hejuru y'amavuta cyangwa hejuru y'ifu. Ni urwego rwa oxide film rukozwe na sodium hydroxide na sodium nitrite ku bushyuhe bwinshi burenga dogere 100.

Igice cy'ingenzi cya firime ya okiside ni tetraokiside y'icyuma (Fe3C4), ingano ya firime ni 0.6-1.5um gusa, ubudahangarwa n'ingese ni buke, mu gihe udakoresheje amavuta cyangwa umunyu ufunganye amasaha 1-2 gusa, ukoresha amavuta mu masaha 3-4 cyangwa arenga. Ibikoresho bito ntibikoresha ubu buryo kugeza ubu. Bitandukanye n'uko ibara rigaragara, okiside y'umukara na zinc y'umukara na electrophoretic y'umukara irafunga, ariko ntabwo irabagirana nk'umukara na zinc y'umukara.

• Galvanize:

Electroplating y'umukara ifite ubwoko bubiri bwa zinc y'umukara na nikeli y'umukara, ihame ry'iyi gahunda ni rimwe, gusa ikorwa ry'umuti wa electroplating n'umuti wa nyuma yo kuvurwa hakoreshejwe lattice cyangwa passivation itandukanye. Zinc ikora mu buryo bwa shimi, yoroshye kuyisiga no kuyijima mu kirere, kandi amaherezo ikora 'ingufu z'umweru', zinc plating nyuma yo kuvurwa na chromate kugira ngo ipfuke urwego rwa zinc kuri filime ihindura imikorere y'imiti, kugira ngo icyuma gikora kibe mu buryo butariho, ni passivation y'urwego rwa zinc. Filime ya passivation uhereye ku isura ishobora kugabanywamo umweru passivation (zinc yera), ubururu bworoheje (zinc y'ubururu), passivation y'umukara (zinc y'umukara), passivation y'icyatsi kibisi (zinc y'icyatsi) n'ibindi.

• Electrophoresis y'umukara:

Dukoresheje uburyo bwa electrochemical bwo gushyira uduce twa colloidal twa resin organic ku bice kugira ngo habeho urwego rw'ibara ry'umwimerere ry'amabara atandukanye, electrophoresis black ikoreshwa cyane mu nganda, dufate urugero rw'inzira y'umukara: gukura amavuta mu irangi, gusukura fosfati, electrophoresis, gukamisha irangi. Ishobora kugabanywamo electrophoresis ya anodic (resin ionisation muri ions negative) na electrophoresis ya cathodic (resin electrophoresis muri ions positive), naho inzira y'irangi ugereranije n'imikorere y'ubwubatsi ni nziza, umwanda n'ingaruka ku bidukikije bigabanyije ubushobozi bwabyo bwo kurwanya umunyu mu masaha 300 cyangwa arenga, ikiguzi n'ubudahangarwa bw'ingufu n'imikorere ya Dacromet birasa.

• Umweru wa zinki:

Uburyo bwo gushushanya hakoreshejwe electroplating ni: gukuraho amavuta – gusukura – gukora aside nke – gukoresha electroplating zinc – gusukura – umusatsi wera wo gusohora – gusukura – kumisha, kandi itandukaniro rya zinc y'umukara nta. Itandukaniro ry'umuti wa lat rack n'uwo gusohora, gusohora umweru ni filime idafite ibara ibonerana ya zinc oxide, hafi nta chromium, bityo ubudahangarwa bw'ingese ugereranyije na zinc y'umukara, zinc y'ubururu, zinc y'amabara ni mbi cyane, ibipimo ngenderwaho mu nganda mu masaha 6-12, hari uruganda rukora plating binyuze mu kunoza ubwiza bw'ikigereranyo cy'umuti wa passivation bishobora gukorwa kugira ngo birwanye spray y'umunyu mu gihe cy'amasaha agera kuri 20.

Kubera uburyo bwo gutunganya ubuso bwa zinc yera bwo gukoresha ubwoko bwa zinc plating, hagaragaye ikizamini cyo gutera umunyu udafite aho ubogamiye ku buso bwa zinc corrosion, ibara ry’umutuku rigaragara mu masaha agera kuri 40, bityo corrosion ya zinc yera ni nziza kurusha nickel yera. Isura na nickel yera ugereranije na zinc yijimye, zinc yera ku ibara ry’umwimerere rya zinc y’icyatsi kibisi n’umweru, na nickel yera ugereranije n’itandukaniro rinini.

• Nickel y'umweru:

Uburyo bwo gusiga amavuta ni: gukuramo amavuta – gusukura – gukora aside nke – gusukura – hasi mu muringa – gukora – gusukura – gukoresha electroplating nickel- Gusukura – gukora passivation – gusukura – gukamisha – cyangwa gufunga, kandi uburyo bwa nickel y'umukara muri rusange ni bumwe, ahanini uburyo bwo gusiga amavuta buratandukanye, sulfide nke ya zinc n'iy'ihuri. Nickel ni icyuma cy'umuhondo cya feza, kugira ngo kigaragare neza, kizafatanya n'icyuma gitanga urumuri cya nickel. Ubudahangarwa bwayo na nickel y'umukara ntabwo butandukaniye cyane mu masaha 6-12, uburyo bw'abakora ibikoresho rusange nabwo buzaba hejuru y'amavuta cyangwa bufunze, nko gusuzuma ingaruka za ruswa ku bice bya pulasitiki by'ibikoresho byinjira bigomba gukoreshwa nk'insanganyamatsiko yo kugenzura niba amavuta arenga cyangwa adarenga.

• Zinc y'ubururu, zinc y'icyatsi kibisi:

Uburyo bumeze nk'ubwo kuri zinc yera, zinc y'ubururu ni passivative zinc oxide film irimo 0.5-0.6mg/dm2 ya chromium trivalenti. Passivation y'icyatsi kibisi, izwi kandi nka passivation ya aside eshanu, ishobora kubona filme nini y'icyatsi kibisi, umuti wa passivation urimo iyoni za fosifate, filme y'icyatsi kibisi ivamo ni filme ikomeye kandi irinda imiterere ya chromate na fosifate.

Kubera ko irwanya ingese, zinc y'ubururu ni nziza kurusha zinc yera, mu gihe zinc y'icyatsi kibisi iruta zinc y'ubururu. Ibara rya zinc y'ubururu ni ubururu gato naho zinc yera ikaba yegereye cyane inganda zo gukoresha cyane, iyi ya nyuma ishobora no gukoreshwa nk'igishushanyo mbonera cy'ibicuruzwa mu gihe hakoreshejwe ubundi buryo bwo gukora vis.

• Zinc ikozwe mu mazi (chimie):

Mu cyiciro cyo gukaranga ibyuma, uburyo bwa zinc ifite amabara menshi burwanya ingese neza, uburyo bwo gukaranga ibyuma bufite amabara menshi ni ubu: gukaranga ibyuma – gusukura – 2% – 3% aside nitrike iva mu mucyo – gusukura – gukaranga ibyuma bifite ibara rya chromium nke – gusukura – Guteka ubusaza. Ubushyuhe bwo gukaranga ibyuma ni buke cyane, icyuma gifata ibyuma buhoro buhoro, icyuma gifata ibyuma bike cyane. Ubushyuhe bwinshi, icyuma kiba kinini kandi gifunguye, ntigifatanye neza. Ni byiza kugenzura kuri dogere 25 kugira ngo urebe ko ibara rimwe riboneka mu gihe runaka.

Nyuma yo gushyuha, igomba gutekwa no gusaza kugira ngo irusheho gufatana no kudashonga neza. Siga irangi ku vis zipfutse zinc ukoresheje gukora ku gice cyo hasi cy’urukiramende rudakoresha umunyu mu gihe kirenze amasaha 48, kugenzura neza bishobora gukorwa mu masaha arenga 100.

• Dacromet:

Ni incamake n'ubusobanuro bwa DACROMET, ni ukuvuga irangi ririnda umunyu wa chromium ushingiye kuri zinc, rinazwi kandi ko ritwikiriwe na zinc-aluminium. Inzira y'ibanze ni: gukuraho amavuta – gukuraho amavuta – gusiga – gushyushya – gukonjesha. Muri rusange, iyi nzira igira inshuro 2-4 kuva ku irangi kugeza ku irangi, kuko vis zifite irangi rinini kugira ngo zigere ku bunini runaka zigomba gukorwa inshuro nyinshi.

Imiterere iri ku buso bw'icyuma, itwikiriwe n'urwego rwa Dacromet (ni ukuvuga, irimo ibipimo bya zinc, aluminiyumu [ibipimo muri rusange bifite ingano ya mikoroni 0.1-0.2X10-15] Cr03 n'ibintu byihariye by'umwimerere by'umuti uvanze cyane uvanze), kuri 300 ° C cyangwa irenga ubushyuhe bukomeza gutwika igihe runaka, Dacromet amazi muri chromium hexavalent igabanuka ikaba chromium trivalent, bigatuma habaho imvange ya chromate (nCr03) mCr203).

Ubudahangarwa bw'ubushyuhe ni bwiza cyane. Umunyu utagira ingano kugeza ku masaha 300 cyangwa arenga, ikibazo cy'igitambaro ntabwo ari kimwe, ahantu hato ni 5-10um, ahantu hanini ni 40um cyangwa hafi aho, bizagira ingaruka ku bujyakuzimu bw'umurambararo wa screw, bityo vis n'vis byo gukoresha imashini bifite umurambararo muto ni byiza cyane kudakoresha uburyo bwa Dacromet nk'uburyo bwo kuvura ubuso.