Kpọsara a na-ejikarị usoro ọgwụgwọ elu eme ihe bụoxidation, electrophoresis, electroplating, dacromet anọ edemede, ndị na-esonụ bụ tumadi ka ịghasa naagba nke ọgwụgwọ elu nke nchịkọta nhazi ọkwa.
- Nwa oxide:
Kewara n'ime ụlọ okpomọkụ blackening na elu okpomọkụ blackening, na ụlọ okpomọkụ blackening dị ka ihe atụ nke usoro bụ: chemical degenreasing - mmiri ọkụ na-asacha - mmiri oyi na-asacha - nchara mwepụ na acid etching - ihicha - blackening - nhicha -Over mmanụ ma ọ bụ karịa mechiri emechi. Ọ bụ oyi akwa ihe nkiri oxide nke sodium hydroxide na sodium nitrite hibere na okpomọkụ dị elu karịa ogo 100.
Akụkụ bụ isi nke ihe nkiri oxide bụ iron tetraoxide (Fe3C4), ịdị n'otu nke ihe nkiri ahụ bụ naanị 0.6-1.5um, nguzogide corrosion adịghị mma, ma ọ bụrụ na ọ bụghị n'elu mmanụ ma ọ bụ ịgbasa nnu na-anọpụ iche naanị 1-2 awa ma ọ bụ karịa, n'elu mmanụ n'ime awa 3-4 ma ọ bụ karịa. Obere ngwa anaghị eji usoro a maka skru oge a. Dị iche na ọdịdị nke agba, black oxide na black zinc na electrophoretic black nso, ma ọ bụghị dị ka ìhè dị ka nwa zinc na electrophoretic nwa agba.
- Galvanize:
Black electroplating nwere ụdị abụọ nke black zinc na black nickel, ụkpụrụ nke usoro bụ isi otu, naanị usoro nke electroplating ngwọta na post-ọgwụgwọ na dị iche iche lattice ma ọ bụ passivation ngwọta. Zinc bụ chemically na-arụ ọrụ, dị mfe oxidise na ọchịchịrị na ikuku, na n'ikpeazụ na-emepụta 'na-acha ọcha nchara' corrosion, zinc plating mgbe chromate ọgwụgwọ iji kpuchie a oyi akwa nke zinc na chemical ntọghata film, nke mere na-arụsi ọrụ ike metal bụ na a passive steeti, bụ passivation nke zinc oyi akwa. Passivation film si ọdịdị nwere ike kewaa na-acha ọcha passivation (ọcha zinc), ìhè-acha anụnụ anụnụ (-acha anụnụ anụnụ zinc), nwa passivation (black zinc), agha green passivation (green zinc) na na.
- Electrophoresis ojii:
Ịnabata usoro electrochemical iji tinye akụkụ nke colloidal nke resin organic na akụkụ iji mepụta oyi akwa mkpuchi nke agba dị iche iche, a na-eji electrophoresis ojii karịa na ụlọ ọrụ, were usoro ojii dị ka ihe atụ: degenreasing-cleaning-phosphating-electrophoresis paint-draining. Enwere ike kewaa electrophoresis anodic (resin ionisation n'ime ion na-adịghị mma) na cathodic electrophoresis (resin electrophoresis n'ime ions dị mma), na usoro agba ma e jiri ya tụnyere arụ ọrụ ihe owuwu dị mma, mmetọ na mmerụ ahụ na gburugburu ebe obibi iji belata nkwụsị ya na-arụ ọrụ nnu na-anọpụ iche na awa 300 ma ọ bụ karịa, ọnụ ahịa na nkwụsị corrosion na usoro Dacromet yiri ya.
- Zinc ọcha:
Electroplating usoro bụ: degreasing - ihicha - adịghị ike acid activation - electroplating zinc - ihicha - ọcha passivation ntutu - ihicha - ihicha, na nwa zinc dị iche bụ ọ dịghị Over lat ogbe na passivation ngwọta iche, na-acha ọcha passivation bụ a colorless transperent zinc oxide film, ọ fọrọ nke nta ọ dịghị chromium, otú corrosion eguzogide ikwu na nwa zinc, blue zinc, 1 ụlọ ọrụ na-adịghị mma na-emepụta ihe na Zinc na-acha anụnụ anụnụ n'ebe ahụ, Zinc na-emepụta ihe na-adịghị mma n'ebe ahụ. site na imeziwanye nkenke nke oke nke ngwọta passivation nwere ike ime iji gbochie nnu nnu na-anọpụ iche maka ihe dị ka awa 20.
N'ihi na-acha ọcha zinc plating ụdị elu ọgwụgwọ usoro kposara ime na-anọpụ iche nnu ịgba ule mbụ pụtara n'elu plating corrosion ọcha, red ajari onu bụ ihe dị ka 40 awa, ya mere, ọcha zinc corrosion iguzogide dị mma karịa ọcha nickel. Ọdịdị na nickel ọcha ma e jiri ya tụnyere ọchịchịrị, zinc na-acha ọcha maka agba mbụ nke zinc greenish-ọcha, na nickel na-acha ọcha ma e jiri ya tụnyere nnukwu ọdịiche.
- Nickel ọcha:
Plating usoro bụ: degreasing - ihicha - adịghị ike acid activation - ihicha - ọla kọpa ala - ebighị - ihicha - electroplating nickel- Cleaning - passivation - ihicha - ihicha - ma ọ bụ mechiri emechi, na nwa nickel usoro bụ isi ihe ahụ, tumadi plating ngwọta usoro bụ dị iche iche, obere zinc sulfide na join.Nickel bụ ọlaọcha-ọcha na-acha odo odo metal, nke na-egbuke egbuke n'anya, ga-esonyere nickel. Nguzogide corrosion ya na nickel ojii abụghị ihe dị iche iche 6-12 awa, usoro nke ndị na-emepụta ihe n'ozuzu ga-adịkwa n'elu mmanụ ma ọ bụ mechie, dị ka ịtụle mmetụta nke corrosion na akụkụ plastik nke ihe na-abata kwesịrị iji mee ihe na-elekwasị anya n'ịchịkwa ma ọ bụ karịa mmanụ.
- Zinc na-acha anụnụ anụnụ, zinc green:
Usoro a dị ka nke zinc na-acha ọcha, ihe nkiri zinc na-acha anụnụ anụnụ nwere ihe nkiri zinc oxide nwere 0.5-0.6mg/dm2 nke chromium trivalent. Green passivation, nke a makwaara dị ka passivation ise-acid, nwere ike nweta fim na-acha akwụkwọ ndụ akwụkwọ ndụ siri ike, ngwọta passivation nwere ion phosphate, ihe na-esi na ya pụta na-egbuke egbuke ahịhịa-acha akwụkwọ ndụ akwụkwọ ndụ bụ ihe mgbagwoju anya, ihe nchebe dị mgbagwoju anya nke chromates na phosphates.
Maka nguzogide corrosion ya, zinc na-acha anụnụ anụnụ dị mma karịa zinc ọcha, ebe zinc green dị mma karịa zinc na-acha anụnụ anụnụ. Agba nke-acha anụnụ anụnụ zinc bụ ubé-acha anụnụ anụnụ na-acha ọcha zinc dị nso na ụlọ ọrụ na-eji ihe ọzọ, nke ikpeazụ nwekwara ike-eji dị ka ngwaahịa imewe mgbe ọzọ usoro nke kposara.
- Enamel zinc (kemistrị):
Na galvanizing Atiya nke usoro nke acha zinc bụ dịtụ mma corrosion eguzogide, ya acha passivation usoro bụ: galvanizing - ihicha - 2% - 3% nitric acid si ìhè - ihicha - obere chromium acha passivation - nhicha -Baking ịka nká. Passivation okpomọkụ dị oke ala, ihe nkiri ahụ dị ngwa, icha mmirimmiri ihe nkiri dị mkpa. Okpomọkụ dị elu, ihe nkiri ahụ dị oke ma dị nro, ọ bụghị nke siri ike. Ọ kachasị mma ijikwa ihe dịka ogo 25 iji hụ na a na-enweta otu agba ahụ n'ime oge ụfọdụ.
Mgbe passivation gasịrị, a ghaghị ime ya ma mee agadi iji melite nkwụchi na nkwụsị nke ihe nkiri ahụ. Agba zinc-plated kposara site na imetụ ala nke iguzogide nnu nnu na-anọpụ iche n'ime ihe karịrị awa 48, enwere ike ịme njikwa dị mma karịa 100 awa.
- Dacromet:
Ọ bụ mbiri na nsụgharị nke DACROMET, ya bụ flaky zinc dabeere chromium mkpuchi mkpuchi, nke a na-akpọkwa zinc-aluminom mkpuchi. Usoro bụ isi bụ: nkwụsịtụ - nkwụsịtụ - mkpuchi - preheating - sintering - jụrụ oyi. Usoro a ga-enwekarị 2-4 ugboro site na mkpuchi ruo usoro jụrụ oyi, n'ihi na kposara na mkpuchi mkpuchi dị ka iji nweta ụfọdụ ọkpụrụkpụ kwesịrị ka eme ya ugboro ugboro.
Ọdịdị dị na metal elu, ntekwasa na a oyi akwa nke Dacromet ngwọta (ie, nwere akpịrịkpa nke zinc, aluminum [scales n'ozuzu size 0.1-0.2X10-15 microns] Cr03 na pụrụ iche organic okwu nke ukwuu dispersible mbuaha aqueous ngwọta), site 300 Celsius C ma ọ bụ okpomọkụ ichebe mmiri na-eme achịcha a oge ụfọdụ, chromium hechromemet na-ebelata mmiri mmiri. na-eme ka ogige chromate mejupụtara amorphous (nCr03) mCr203).
Nguzogide corrosion dị ezigbo mma na-anọpụ iche nnu ruo awa 300 ma ọ bụ karịa, mwepu nke mkpuchi ahụ abụghị otu, ọnọdụ dị mkpa nke 5-10um, ọnọdụ gbara ọkpụrụkpụ nke 40um ma ọ bụ karịa, ọ ga-emetụta ịdị omimi nke dayameta nke ịghasa, yabụ igwe tapping kposara na kposara na obere dayameta nke kposara dị ezigbo mma ka ịghara iji usoro ọgwụgwọ Dacromet.
Oge nzipu: Sep-18-2024
