Dacromet Hex Bolts e etella pele Leqhubu le Latelang la Anti-Corrosion Fastening 

Ho fapana le zinki e tloaelehileng ea electroplated, ts'ebetso ea Dacromet ha e hlahise hydrogen ka har'a substrate. Sena se felisa kotsi ea hydrogen embrittlement-e leng molemo o moholo ha o koahela liboutu tsa hex tse matla haholo tsa limaraka tsa 8.8, 10.9 le 12.9. Phello ke a bolt ea hex e thibelang mafome e bolokang bots'epehi bo felletseng ha e ntse e fana ka khanyetso ea kutu e phahametseng liphetho tse tloaelehileng.

Hobaneng ha Hex Bolts e Rua Molemo haholo ho tsoa ho Dacromet

Liboutu tsa Hex-haholo-holo liboutu tse boima tsa hex - li hlalositsoe haholo ka marokho, litora tse fehlang matla a moea, metjhini e boima le chassis ea likoloi. Lisebelisoa tsena li hloka li-fasteners tse kopanyang boitšoaro bo nepahetseng ba torque-tension le lilemo tse mashome anti-corrosion bophelo. Dacromet e fihlela litlhoko tsena ka bobeli:

• Tšireletso e tšoanangka mokhoa o rarahaneng oa geometry ea khoele ntle le ho haha ​​ho amahanngoa le galvanizing ea hot-dip, ho boloka ho nepahala ha dimensional le khoele e lekanang.
• Coefficient e laoloang ea khohlano(hangata μ = 0.12–0.18 e nang le topcoat), e nolofalletsang mojaro o tsitsitseng oa clamp le ts'ebetso ea ho tiisa ka bongata.
• Ha ho kotsi ea hydrogen embrittlement, ho etsa hore Dacromet e be ea ratoang anti-rustQetella bakeng sa liboutu tse phahameng tsa hex tse sebelisoang manonyeletsong a bohlokoa ka ho fetisisa.
• Ho hanyetsa mocheso ho fihla ho 300 ° C, e fetang hōle meeli e sebetsang ea zinki ea electroplated.

Ts'ebetso ea Corrosion: Dacromet vs. Traditional Coatings

Liteko tsa laboratori tse ikemetseng li lula li bontša seo Liboutu tsa hex tse koahetsoeng ka Dacromet e feta ka bobeli li-electroplated zinki le li-fasteners tse chesang tsa ho qoela ka har'a setlolo sa letsoai se sa nke lehlakore (ASTM B117 / ISO 9227) le liteko tsa cyclic corrosion. Papiso e latelang e akaretsa liphetho tse tloaelehileng bakeng sa litsamaiso tse lekanang tsa ho roala:

Letlapa la 1. Ts'ebetso e bapisoang ea liphahlo tse kholo tse thibelang kutu bakeng sa liboutu tsa hex (litekanyetso tse tloaelehileng tsa laboratori).

Thutong e 'ngoe e boletsoeng ka bophara ea liboutu tsa boleng bo phahameng ba ASTM A490, likarolo tse koahetsoeng ke Dacromet li bonts'itse. mafome a mafubelu a zero ka mor'a lihora tse 1,000 tsa ts'oaetso e tsoelang pele ea letsoai-spray, ha liboutu tse entsoeng ka mochine li bonts'a mafome a khubelu a fetang 85% libakeng tse bohlokoa. Esita le ka mor'a lihora tse 5,000, mehlala ea Dacromet e ile ea bontša feela mafome a khubelu a ka bang 6% - e leng e tsotehang ho feta ea li-galvanized tsa hot-dip tse fihletseng hoo e batlang e le holim'a kutu.

Saense e ka morao ho Tšireletso e Phahameng ea Anti-Rust

E ikhethang anti-corrosion Ts'ebetso ea Dacromet e tsoa mekhoeng e meraro e tlatselletsang:

1. Tšireletso ea mokoallo- Zinc le li-flakes tse pota-potiloeng ke aluminium li etsa thebe e teteaneng, e nang le mekhahlelo e mengata e sitisang mongobo le ho kenella ha ion ea chloride.
2. Tšireletso ea sehlabelo (cathodic).- Li-flakes tsa zinc li senya ka ho khetheha, li sireletsa tšepe e ka tlaase le haeba seaparo se senyehile sebakeng seo.
3. Passivation/ Ho iphekola- Lik'hemik'hale tsa Chromium-oxide ka har'a sekontiri li etsa filimi e tsitsitseng e tsitsitseng e fokotsang tsoelo-pele ea kutu.

Pono ea Mmaraka le Liphello tsa Indasteri

Ha matsete a lefats'e a ntse a potlakisa 'me sethala sa likoloi se fallela ho litšepe tse matla haholo, tlhokeho ea tse tšepahalang. anti-corrosion le e thibelang mafome litharollo tsa fasteners li ntse li eketseha. Bashebelli ba indasteri ba hlokomela mekhoa e 'maloa e matlafatsang:

• Khōlo ea litlhaloso- Litekanyetso tse ling tsa boenjiniere (ho kenyeletsoa le lintlafatso tse amanang le liboutu tsa sebopeho sa ASTM F3125) joale li lemoha ka ho hlaka lits'ebetso tsa zinc-flake tse joalo ka Dacromet e le mekhoa e meng e amohelehang ho li-galvanizing tsa setso bakeng sa lits'ebetso tse matla haholo.
• Mehopolo ea botsitso- Mekhoa ea Dacromet e thehiloeng metsing e hlahisa litšila tse fokolang tse kotsi ho feta mela e mengata ea electroplating, ho lumellana le ho tiisa melao ea tikoloho.
• Kakaretso ea litšenyehelo tsa botho- Le hoja litšenyehelo tsa yuniti li ka ba holimo ho feta li-zinc plating, bophelo bo atolositsoeng ba tšebeletso le tlhokomelo e fokotsehileng ea Liboutu tsa hex tsa Dacromet hangata ho fana ka litšenyehelo tse tlase tsa bophelo bohle libakeng tse senyang.

Tataiso e Sebetsang bakeng sa Litlhaloso

Ha u khetha Liboutu tsa hex tse koahetsoeng ka Dacromet, lienjineri li lokela ho netefatsa boemo ba ho roala (mohlala, Kereiti ea A kapa B ho latela boima ba ho roala), ho netefatsa ho lumellana ha lubricant efe kapa efe ea topcoat e nang le kamano e reriloeng ea torque-tension, le ho etsa bonnete ba hore liboutu le linate tse tsamaellanang li fumana liphetho tse lumellanang. Ho boloka le ho tšoara hantle ho ntse ho le bohlokoa: ha ho roala ho le holimo haholo anti-rust, ho senyeha ha mechine pele ho kenngoa ho ka fokotsa tšireletso sebakeng sa heno.

Qetello

Theknoloji ea Dacromet e se e holile ho tloha pheletsong e khethehileng ea likoloi ho ba ea mantlha anti-corrosion tharollo bakeng sa tshebetso e phahameng liboutu tsa hex. Motsoako oa eona o ikhethang oa ho tšoana ha filimi e tšesaane, ho ba sieo ha hydrogen embrittlement, matla a phahameng a mocheso, le khanyetso e netefalitsoeng ea lihora tse likete tse ngata e e beha e le khetho e etelletseng pele hohle moo nako e telele. e thibelang mafome botshepehi ha bo ka buisanoa.

Joalo ka beng ba meaho, baetsi ba polasi ea moea, le li-OEM tsa likoloi ba ntse ba tsoela pele ho etelletsa pele ho tšoarella le ho fokotsa tlhokomelo, Liboutu tsa hex tsa Dacromet li lebelletsoe ho hapa karolo e ntseng e hola ea 'maraka oa premium fastener-ho fana ka anti-rust ts'ebetso eo boenjiniere ba sejoale-joale bo e hlokang.