Likokoana-hloko tse atisang ho sebelisoa mekhoa ea phekolo ea holim'a metsi lioxidation, electrophoresis, electroplating, Dacromet mekhahlelo e mene, tse latelang ke haholo-holo ho screw themmala ea phekolo ea bokaholimo ba kakaretso ea lihlopha.
- Ntsho oxide:
E arotsoe ka mocheso oa kamore e ntšo le ho fifala ha mocheso o phahameng, ho ea ho mocheso oa kamore e ntšo e le mohlala oa ts'ebetso ke: ho tlosa lik'hemik'hale - ho hlatsoa metsi a chesang - ho hlatsoa metsi a batang - ho tlosa mafome le ho chesa asiti - ho hloekisa - ho ntšofala - ho hloekisa -Ho feta oli kapa ho koaloa ka holimo. Ke lera la filimi ea oxide e entsoeng ke sodium hydroxide le sodium nitrite ka mocheso o phahameng ho feta likhato tse 100.
Karolo e ka sehloohong ea filimi ea oxide ke tšepe tetraoxide (Fe3C4), ho tšoana ha filimi ke 0.6-1.5um feela, ho hanyetsa kutu ho batla ho fokola, tabeng ea ho se fetele oli kapa ho koalloa ho se nke lehlakore letsoai ho fafatsa lihora tse 1-2 feela kapa ho feta, ka oli ka lihora tse 3-4 kapa joalo. Lisebelisoa tse nyane ha li sebelise ts'ebetso ena bakeng sa nako e ntseng e le li-screw. E khetholloa ka ponahalo ea 'mala, oxide e ntšo le zinki e ntšo le electrophoretic e ntšo haufi, empa e se e khanyang joaloka zinki e ntšo le mmala o motšo oa electrophoretic.
- Galvanize:
Black electroplating e na le mefuta e 'meli ea zinki e ntšo le nickel e ntšo, molao-motheo oa ts'ebetso o ts'oana, feela ho etsoa ha tharollo ea electroplating le ka mor'a phekolo e nang le lattice e fapaneng kapa tharollo ea passivation. Zinc e na le lik'hemik'hale, e bonolo ho oxidise le ho fifala sepakapakeng, 'me qetellong e hlahisa' mafome a masoeu, "zinki plating ka mor'a phekolo ea chromate e le hore e koahele lera la zinki ka filimi ea phetoho ea lik'hemik'hale, e le hore tšepe e sebetsang e be boemong bo sa sebetseng, ke passivation ea zinki lera. Filimi ea "passivation" ho tloha ponahalong e ka aroloa ka passivation e tšoeu (zinki e tšoeu), boputsoa bo boputsoa (zinki e putsoa), passivation e ntšo (zinki e ntšo), passivation ea sesole (zinki e tala) joalo-joalo.
- Electrophoresis Black:
Ho amohela mokhoa oa electrochemical oa ho kenya likaroloana tsa colloidal tsa resin ea manyolo likarolong ho etsa lesela la ho roala ka mebala e sa tšoaneng, electrophoresis black e sebelisoa ho feta indastering, nka mokhoa o motšo e le mohlala: degreasing-cleaning-phosphating-electrophoresis paint-drying. E ka aroloa ka anodic electrophoresis (resin ionisation ka ion mpe) le cathodic electrophoresis (resin electrophoresis ka ion positive,), 'me pente tshebetso bapisoa le tshebetso ya kaho e ntle, tšilafalo le kotsi ho tikoloho ho fokotsa ho hanyetsa lona ho se nke lehlakore letsoai spray tshebetso ka lihora tse 300 kapa ho feta, litšenyehelo le ho hanyetsa kutu le ts'ebetso ea Dacromet e tšoana.
- Zinc e tšoeu:
Electroplating process ke: degreasing - ho hloekisa - activation e fokolang ea acid - electroplating zinki - ho hloekisa - moriri o mosoeu - ho hloekisa - ho omisa, le phapang ea zinki e ntšo ha e na liphapang tsa tharollo ea lat rack le passivation, white passivation ke filimi e se nang mebala e hlakileng ea zinc oxide, hoo e batlang e se na chromium, kahoo indasteri ea corrosion e amanang le zinki e ntšo, zinki e putsoa, ka hona indasteri ea corrosion e amanang le zinki e ntšo, zinki. Lihora tse 6-12, ho na le moetsi enoa oa plating ka ho ntlafatsa ho nepahala ha karo-karolelano ea tharollo ea passivation e ka etsoang ho hanela spray ea letsoai e sa nke lehlakore ka lihora tse ka bang 20.
Ka lebaka la li-screws tsa mofuta o mosoeu oa zinki ho etsa tlhahlobo ea ho se nke lehlakore ea letsoai qalong e ile ea hlaha holim'a lesela le lesoeu, 'mala o mofubelu oa mafome o ka nka lihora tse ka bang 40, kahoo ho hanyetsa kutu e tšoeu ea zinki ho molemo ho feta nickel e tšoeu. Ponahalo le nickel e tšoeu ha e bapisoa le zinki e lefifi, e tšoeu bakeng sa 'mala oa pele oa zinki botala bo bosoeu, le nickel e tšoeu ha e bapisoa le phapang e kholo.
- Nickel e tšoeu:
Plating process ke: degreasing - cleaning - weak acid activation - cleaning - copper bottom - activation - cleaning - electroplating nickel - Cleaning - passivation - cleaning - drying - kapa ho koaloa, le black nickel process ha e le hantle e ts'oana, haholo-holo plating solution formulation is different, less zinki sulfide and join.Nickel is a silver-white yellowner , better yellowish nick will join. Ho hanyetsa ha kutu le nickel e ntšo ha ho na phapang e ngata lihora tse 6-12, ts'ebetso ea baetsi ba kakaretso e tla boela e be holim'a oli kapa e koetsoe, joalo ka ho nahana ka phello ea kutu likarolong tsa polasetiki tsa thepa e kenang e lokela ho sebelisoa e le ho tsepamisa maikutlo ho laola hore na ho feta oli kapa che.
- Zinc e putsoa, zinki e tala:
Ts'ebetso e batla e ts'oana le ea zinki e tšoeu, zinki e putsoa e feta filimi ea zinc oxide e na le 0.5-0.6mg/dm2 ea trivalent chromium. Green passivation, eo hape e tsejoang e le five-acid passivation, e ka fumana filimi e teteaneng ea joang bo botala, tharollo ea passivation e na le li-ion tsa phosphate, filimi e botala bo botala bo botala ke filimi e sireletsang e rarahaneng, e rarahaneng ea li-chromates le phosphates.
Bakeng sa ho thibela ho bola ha eona, zinki e putsoa e molemo ho feta zinki e tšoeu, ha zinki e tala e molemo ho feta zinki e putsoa. 'Mala oa zinki o moputsoa o moputsoa hanyane le zinki e tšoeu e batla e le haufi le indasteri ho sebelisa ho feta, ea morao-rao e ka boela ea sebelisoa e le moralo oa sehlahisoa ha mokhoa o mong oa li-screw.
- Zinc e nang le enameled (k'hemistri):
Karolong ea galvanizing ea ts'ebetso ea zinki e mebala e batla e le ntle ho bola, mokhoa oa eona oa ho senya mebala ke: galvanizing - ho hloekisa - 2% - 3% nitric acid ho tsoa khanyeng - ho hloekisa - ho fokotseha ha mebala ea chromium - ho hloekisa -Baking botsofali. Mocheso oa Passivation o tlase haholo, filimi e lieha, filimi e lerootho e tšesaane. Mocheso o phahameng, filimi e teteaneng ebile e hlephile, ha e khomarele ka thata. Ho molemo ho laola ka likhato tse ka bang 25 ho netefatsa hore 'mala o tšoanang o fumanoa ka nako e itseng.
Ka mor'a passivation, e tlameha ho behoa le ho tsofala ho ntlafatsa ho khomarela le ho hanyetsa ha filimi. 'Mala oa li-zinc-plated screws ka ho ama botlaaseng ba ho hanyetsa ha letsoai le sa nke lehlakore ka lihora tse fetang 48, taolo e ntle e ka etsoa ho feta lihora tse 100.
- Dacromet:
Ke khutsufatso le phetolelo ea DACROMET, ke hore, flaky zinc-based chromium salt protective coating, eo hape e bitsoang zinc-aluminium coating. Mokhoa oa motheo ke: ho fokotsa - ho fokotsa - ho roala - ho futhumatsa - ho futhumatsa - ho sintering - ho pholisa. Ts'ebetso ka kakaretso e tla ba le makhetlo a 2-4 ho tloha ho roala ho isa ho pholileng, hobane li-screws tse nang le li-dip coating joalo ka ho fihlela botenya bo itseng li hloka ho etsoa makhetlo a mangata.
Sebopeho se holim'a tšepe, se koahetsoeng ka lera la tharollo ea Dacromet (ke hore, e nang le sekala sa zinki, aluminium [sekala ka kakaretso boholo ba 0.1-0.2X10-15 microns] Cr03 le lintho tse khethehileng tsa manyolo tse nang le tharollo e nang le metsi a mangata a qhalakahang), ka 300 ° C kapa ho boloka mocheso ho baka nako e itseng ea nako e telele ea mokelikeli o fokotsehileng. chromium, e hlahisang metsoako ea amorphous composite chromate (nCr03) mCr203).
Corrosion resistance ke e ntle haholo e sa nke lehlakore letsoai ho fihlela lihora tse 300 kapa ho feta, bofokoli ba ho roala ha bo tšoane, boemo bo tšesaane ba 5-10um, boemo bo teteaneng ba 40um kapa ho feta, bo tla ama botebo ba bophara ba sekoti, kahoo mochine o tlanya li-screw le li-screw tse nang le bophara bo fokolang ba li-screw ho molemo haholo hore u se ke ua sebelisa mokhoa oa Dacromet e le phekolo ea holim'a metsi.
Nako ea poso: Sep-18-2024
