Dacromet Flange Bolts: Superior Anti-Corrosion le Anti-Rust Performance bakeng sa Likopo tse Batlang 

Dacromet ke mokhoa oa ho roala o sa sebeliseng motlakase, o thehiloeng metsing o entsoeng haholo-holo ka li-zinc le li-flakes tsa aluminium tse qhalakantsoeng ka har'a binder e nang le chromium kapa e se nang chromium. E sebelisoa ka mekhoa ea dip-spin, spray, kapa dip-drain mme ka mor'a moo e phekoloa mocheso, ho roala ho etsa filimi e tšesaane (ka tloaelo 5-15 μm), e ts'oanang, e sirelelitsoeng-grey e sireletsang filimi e khomarelang ka thata ho substrate ea tšepe.

Mochine o thibelang ho bola oa Dacromet o sebetsa ka liketso tse 'ne tse tlatselletsang:

1. Tšireletso ea lithibelo: Li-flakes tsa zinki le aluminium tse pota-potlanang li theha mekhahlelo e mengata e sitisang ho kenella ha mongobo, oksijene le li-ion tse senyang.

2.Tsireletso ea sehlabelo (galvanic): Zinc e sebetsa joalo ka anode ea sehlabelo, ka ho khetheha e senya ho sireletsa tšepe e ka tlas'a mafome.

3.Ho iphodisa / ho itokisa: Lihlahisoa tsa oxidation tsa zinki le aluminium li tlatsa tšenyo e nyane ka har'a seaparo, ho boloka botšepehi bo sa khaotseng bo khahlanong le mafome.

4.Pasivation: The inorganic binder le passivating compounds li liehisa tshebediso ya zinki, e leng ho lelefatsa ho hanyetsa ho bola.

Hobane ts'ebetso ena ha e akarelletse ho khetha acid kapa electrolysis, ho roala ha Dacromet ho felisa ka ho feletseng kotsi ea hydrogen embrittlement-e leng molemo oa bohlokoa bakeng sa liboutu tse matla haholo (Lithuto tsa 10.9, 12.9, le ASTM A490 / F3125). Sena se etsa hore liboutu tsa Dacromet flange ka bobeli li tšepahale ebile li hanana haholo le mafome le ho senyeha ha tikoloho.

3. Melemo ea Bohlokoa ea Dacromet Flange Bolts

3.1 Khoho e Ikhethang le Ho hanyetsa Rust

Li-bolts tsa flange tse koahetsoeng ka Dacromet li fihlella ka tloaelo Lihora tse 1,000 kapa ho feta tlhahlobo ea ho se nke lehlakore ha letsoai (ASTM B117 / ISO 9227) ntle le ponahalo ea mafome a khubelu. Litaelong tse ngata, mafome a masoeu a lieha ho feta lihora tse 240-500, 'me ts'ebetso ea anti-corrosion ka kakaretso e phahame ka makhetlo a 7-10 ho feta electrogalvanizing e tloaelehileng. Bokhoni bona bo ikhethang ba ho thibela mafome bo netefatsa bophelo bo bolelele ba ts'ebeletso libakeng tse lebopong la leoatle, maoatleng, indastering le tikolohong ea letsoai.

3.2 Ha ho Kotsi ea ho Embrittlement Hydrogen

Ho fapana le mekhoa ea electroplating e kenyang haedrojene ka har'a tšepe e matla haholo, mokhoa oa Dacromet dip-spin kapa oa spray ha o na electrolytic ka ho feletseng. Ka lebaka leo, liboutu tsa flange tse matla haholo li boloka thepa ea tsona e felletseng 'me ha li na ho robeha ho liehang ho bakoang ke hydrogen embrittlement - ho fana ka tšireletso e khahlanong le mafome le polokeho ea sebopeho.

3.3 Moaparo o mosesaane, o Uniform o nang le Taolo e Ntle ea Dimensional

Botenya bo tloaelehileng bo tloha ho 5 ho isa ho 15 μm. Filimi ena e tšesaane ha e fetole boholo ba likhoele, e lumellang linate tse tloaelehileng hore li sebelisoe ntle le ho feta. Thepa e kenella ka har'a li-geometri tse rarahaneng, likhoele le li-recesses ka mokhoa o ts'oanang, e netefatsa tšireletso e felletseng ea anti-corrosion esita le liprofinseng tse rarahaneng tsa bolt ea flange.

3.4 Botsitso bo Phahameng ba Mocheso le Melemo ea Tlatsetso

Liaparo tsa Dacromet li lula li sebetsa ka mocheso o tsoelang pele ho fihlela hoo e ka bang 250-300 ° C, ho feta meeli ea mocheso oa ho roala zinki tse tloaelehileng. Melemo e eketsehileng e kenyelletsa ho penta hantle, li-coefficients tse laoloang tsa likhohlano (haholo-holo ka li-topcoats tse tlositsoeng), ho lumellana ha bimetallic le aluminium, le ho lumellana le maemo a mangata a likoloi le a tikoloho.