Ihe fọrọ nke nta ka ọ bụrụ ihe nkedo niile bụ nke carbon steel na alloy steel, a na-atụkwa anya ihe nkedo izugbe ga-egbochi corrosion. Tụkwasị na nke ahụ, mkpuchi nke ọgwụgwọ elu ga-agbasosi ike.
Banyere ọgwụgwọ elu, ndị mmadụ na-aṅa ntị na ịma mma na nchebe corrosion, mana isi ọrụ nke ihe nrụnye bụ njikọ njikọ, na ọgwụgwọ elu nwekwara mmetụta dị ukwuu n'ịrụ ọrụ nke fasteners. Ya mere, mgbe ị na-ahọrọ ọgwụgwọ elu, anyị kwesịkwara ịtụle ihe kpatara ịrụ ọrụ nkedo, ya bụ, nkwụsi ike nke nrụnye nrụnye na preload.
1. Electrolating
Electroplating nke fasteners pụtara na akụkụ nke fasteners a ga-electroplated na-mikpu na a kpọmkwem mmiri ngwọta, nke ga-enwe ụfọdụ edebe metal ogige, nke mere na mgbe na-agafe na mmiri mmiri ngwọta na ugbu a, metal bekee ga-ebuli na rube isi. akụkụ emikpu nke fasteners. Electroplating nke fasteners n'ozuzu na-agụnye galvanizing, ọla kọpa, nickel, chromium, ọla kọpa-nickel alloy, wdg.
2. Phosphate
Phosphating dị ọnụ ala karịa galvanizing, na nguzogide corrosion ya dị njọ karịa galvanizing. Enwere ụzọ phosphating abụọ a na-ejikarị eme ihe maka fasteners, zinc phosphating na manganese phosphating. Zinc phosphating nwere mma mma mmanu mmanu karịa manganese phosphating, na manganese phosphating nwere mma corrosion nguzogide na eyi iguzogide karịa zinc plating. Ngwaahịa phosphating dị ka njikọ bolts na mkpụrụ nke engine, isi cylinder, isi bearings, flywheel bolts, wheel bolts na nuts, wdg.
3. Oxidation (na-agbaji)
Blackening + mmanụ bụ ihe mkpuchi na-ewu ewu maka ngwa ngwa ụlọ ọrụ, n'ihi na ọ dị ọnụ ala ma mara mma tupu ike mmanụ ọkụ agwụ. N'ihi na ịcha ojii enweghị ihe fọrọ nke nta ka ọ bụrụ ikike iji gbochie nchara, ọ ga-agba nchara n'oge na-adịghị anya mmanụ. Ọbụlagodi na ọnụnọ mmanụ, nnwale ịgba mmiri nnu na-anọpụ iche nwere ike iru naanị awa 3 ~ 5.
4. Zinc na-ekpo ọkụ
Galvanizing na-ekpo ọkụ bụ ihe mkpuchi ikuku na-ekpo ọkụ nke zinc na-ekpo ọkụ na mmiri mmiri. Ya mkpuchi ọkpụrụkpụ bụ 15 ~ 100μm, na ọ dịghị mfe ịchịkwa, ma ọ nwere ezi corrosion eguzogide, n'ihi ya, ọ na-ejikarị na engineering. N'ihi ọnọdụ okpomọkụ nke nhazi zinc na-ekpo ọkụ, (340-500C) enweghị ike iji ya mee ihe n'elu ọkwa 10.9. Ọnụahịa nke galvanizing na-ekpo ọkụ na-ekpo ọkụ nke fasteners dị elu karịa nke electroplating.
5. Zinc impregnation
Zinc impregnation bụ ihe siri ike metallurgical thermal mgbasa mkpuchi nke zinc ntụ ntụ. Ụdị ya dị mma, na ọbụna n'ígwé nwere ike ịnweta eri na oghere kpuru ìsì. The ọkpụrụkpụ nke mkpuchi bụ 10 ~ 110μm, na njehie nwere ike ịchịkwa n'ime 10%. Ike njikọta ya na arụmọrụ mgbochi corrosion na mkpụrụ bụ ihe kachasị mma n'etiti mkpuchi zinc (electro-galvanizing, galvanizing hot-dip galvanizing na dacromet). Usoro nhazi ya enweghị mmetọ na nke kachasị mma na gburugburu ebe obibi. Ọ bụrụ na anyị anaghị atụle chromium na gburugburu ebe obibi nchebe, ọ bụ n'ezie ndị kasị adabara elu-ike fasteners na elu mgbochi corrosion chọrọ.
Ebumnuche bụ isi nke ọgwụgwọ elu nke fasteners bụ iji mee ka ndị na-emepụta ihe nweta ikike mgbochi corrosion, ka ha wee nwekwuo ntụkwasị obi na mgbanwe nke ihe nkedo.
Oge nzipu: Dec-08-2022