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Dacromet Hex Socket Bolts: Anti-Corrosion Coating e tsoetseng pele e kopana le Moralo o nepahetseng oa ho tiisa
2026-07-27
Dacromet hex socket bolts e emela ho kopana ha mahlale a mabeli a bohlokoa a fastening: Dacromet high-performance anti-corrosion coating system le cylindrical socket-head (Allen) bolt geometry. Ka kopanelo, ba fana ka tharollo e potlakileng e mamellang tikoloho e senyang haholo ha ba ntse ba etsa hore ho kenngoe torque e phahameng ka nepo, ho etsa hore e be tsa bohlokoa haholo lits'ebetsong tsa likoloi, tsa metsing, tsa kaho le tsa metjhini e boima lefatšeng ka bophara.
1. Dacromet Coating Technology
Dacromet ke sistimi e nang le metsi e thehiloeng ho inorganic e qapiloeng bakeng sa li-fasteners tsa carbon le tšepe e sa hloekang. Ho fapana le zinki e tloaelehileng ea electroplated, Dacromet e sebelisa ts'ebetso ea lik'hemik'hale e se nang chromium (kapa e tlaase-chromium) e etsang mokoallo o tiileng oa mekhahlelo e mengata ea zinki le li-flakes tsa aluminium. Sephetho ke sephetho se ikhethileng sa silevera-grey se kopanyang ho se nke lehlakore ka botle le ts'ebetso e ikhethang ea ts'ireletso.
Mekhahlelo e meraro e sebetsa ka kopanelo ho fana ka tšireletso e felletseng:
Zinc-aluminium flake base layer – e fana ka tshireletso ya sehlabelo (cathodic), e corroding ho sireletsa karolo e ka tlase ya tshepe, athe aluminium flakes e eketsa tshireletso.
Passivation mid-layer – filimi ea inorganic chromate/silicate e tiisang sebopeho sa metallic flake, e thibelang ho fafatsa letsoai, tlhaselo ea lik'hemik'hale, le mocheso o fetang hole oa zinc plating.
Top organic seal coat (boikhethelo) – e matlafatsa ts'ebetso ea ho thibela torque le ho mamella maemo a leholimo, ha e ntse e hlahisa chebahalo e sa fetoheng ea silver-gray e nang le khohlano e tlase.
Lethathamo la 1. Papiso ea ho hanyetsa Corrosion (Teko ea Spray ea Letsoai, NSS)
| Mofuta oa ho roala | Lihora tsa ho Fafatsa Letsoai | Botenya (μm) | Tšebeliso e Tloaelehileng |
| Dacromet | ≥ 1,000 - 3,000 | 6 - 10 | Marine / koloi |
| Ruspert | ≥ 1,000 - 3,000 | 3 - 5 | Ka ntle/ Marine |
| Zn-Ni alloy plating | ≥ 720 - 1,000 | 8 - 12 | Tsa makoloi |
| Tloaelehileng Zn plating | 96-240 | 5-8 | Ka tlung / kakaretso |
2. Hex Socket Bolts
Liboutu tsa hex socket, tse tsejoang hape e le socket head cap screws kapa Allen bolts, li na le hlooho ea cylindrical e nang le drive e ka hare ea hexagonal. Jiometry ena e lumella phetisetso e phahameng ea torque e nang le profil e nyane ea hlooho ha e bapisoa le liboutu tsa hex tsa kantle, e li etsa hore e be tse loketseng lits'ebetso tse nang le tumello e lekanyelitsoeng kapa moo ho hlokahalang ponahalo e hloekileng le e hloekileng.
Lintlha tsa bohlokoa tsa moralo li kenyelletsa:
Hlooho ea cylindrical e nang le hex drive e ka hare - e amohela linotlolo tse tloaelehileng tsa hex bakeng sa ho kenya torque e phahameng tse nang le hlooho e nyenyane haholo; boholo ba koloi bo lumellana le ISO 2936 kapa ASME B18.3.
Khoele e felletseng kapa e sa fellang – mefuta e fapaneng ea khoele e felletseng e tsamaisa thepa ka ho lekana ho latela bolelele bo kentsoeng; mefuta e fapaneng ea likhoele e fana ka shank e matla e sa baleheng bakeng sa lits'ebetso tsa ho kuta.
Matla a phahameng a alloy steel (8.8 / 10.9 / 12.9) – limaraka tse tshelwang mocheso di netefatsa hore matla a ho fihla ho 1,220 MPa, a loketse merwalo e matla le manonyeletso a bohlokwa.
Dacromet surface finish – e fana ka ≥ 1,000 lihora tsa tšireletso ea letsoai-spray ntle le embrittlement ea haedrojene, e etsang hore e be e loketseng bakeng sa li-fasteners tse matla haholo moo electroplating e sa lokelang.
Letlapa la 2. Litlhaloso tse tloaelehileng tsa Dacromet Hex Socket Bolt (Property Class 8.8)
| Boholo | Khoele Dia. (mm) | Bophahamo ba Hlooho (mm) | Min. Tensile (MPa) | Tšebeliso e Tloaelehileng |
| M4 | 4 | 4 | 800 | Electronics / lisebelisoa |
| M5 | 5 | 5 | 800 | Kopano e bobebe |
| M6 | 6 | 6 | 800 | Thepa / mochini |
| M8 | 8 | 8 | 800 | Mechini / koloi |
| M10 | 10 | 10 | 830 | Manonyeletso a sebopeho |
| M12 | 12 | 12 | 830 | Mechini e boima |
3. Kakaretso
Dacromet hex socket bolts e kopanya khanyetso e phahameng ea kutu ea Dacromet inorganic coating system (ho fihlela lihora tse 1,000-3,000 tsa tšireletso ea letsoai-spray ntle le embrittlement ea hydrogen) ka torque e phahameng, moralo o tlase oa bolt ea hex socket. Khokahano ena e thusa ho tiisa ka mokhoa o ts'epahalang maemong a boima - ho tloha ho chassis le li-brake system ho isa meahong ea likepe le lisebelisoa tsa kantle - ha e ntse e boloka taolo e nepahetseng ea torque le ho tšoarella ha nako e telele. Ha liindasteri li ntse li batla li-fasteners tse leka-lekaneng ts'ebetso, polokeho le bophelo bo bolelele, liboutu tsa Dacromet hex socket e se e le khetho e ratoang bakeng sa baenjiniere le li-OEM lefatšeng ka bophara.
