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Dacromet Flange Bolts
2026-07-23
Dacromet Flange Bolts
Li-Anti-Corrosion Flange Fasteners tse nang le Zinc-Aluminium Flake Coating
Li-bolts tsa Dacromet flange li kopanya moralo oa hlooho ea moroalo o tsamaisang thepa le Dacromet zinc-aluminium flake coating. Flange ea bohlokoa e nka sebaka sa washer e arohaneng, athe Dacromet coating e fana ka lihora tse 500-1,200 tsa ho hanyetsa ha letsoai ntle le hydrogen embrittlement - e loketseng bakeng sa lisebelisoa tsa likoloi, tsa kaho le tsa metsing.
Karolo ea 1 - Flange Bolt
Bolt ea flange ke bolt ea hlooho ea hex e nang le flange e kopaneng e kang washer botlaaseng ba hlooho. Flange e aba moroalo oa clamping sebakeng se pharaletseng, ho fokotsa khatello ea holim'a metsi le ho thibela tšenyo ea thepa e hokahaneng. Sena se felisa tlhoko ea washer e arohaneng, kopano e nolofatsang.
Likarolo tsa Bohlokoa
- Kabo ea thepa: Flange e jala matla a ho koala, e fokotsa khatello ea maikutlo ho fihla ho 50% ha e bapisoa le liboutu tse tloaelehileng tsa hex.
- Anti-lokolla: Khetho ea serrated flange e fana ka khanyetso e hahelletsoeng ka har'a vibrate ntle le lisebelisoa tsa ho notlela.
- Maemo: DIN 6921 / ISO 4162 / GB/T 5787; M6–M20; Kereiti ea 8.8 le 10.9 ka ISO 898-1.
- Lisebelisoa: Tšepe ea carbon (Kereiti ea 8.8) kapa tšepe e tlaase ea alloy (Kereiti ea 10.9), e tima ebile e halefile.
Karolo ea 2 - Ho roala ha Dacromet
Dacromet ke seaparo se entsoeng ka metsi, se se nang motlakase sa zinki le li-flakes tsa aluminium tse pota-potileng tse kopantsoeng ke metsoako ea chromium. E sebelisoa ka li-dip-spin-cure cycles ho 280-300 ° C, e fana ka tšireletso ea corrosion ea mekhahlelo e meraro ntle le ho embrittlement ea haedrojene.
Mokhoa oa Tšireletso
- Tšireletso ea sehlabelo: Li-flakes tsa zinc li senya ka ho khetheha ho sireletsa tšepe, le ha ho roaloa.
- Tšitiso ea 'mele: Li-flakes tse pota-potileng li thibela mongobo, oksijene le li-ion tse senyang.
- Phaello ea lik'hemik'hale: Chromium e etsa hore zinki e qhibilihe butle le ho ipholisa.
Melemo ea Bohlokoa
- Ha ho na hydrogen embrittlement: Ts'ebetso e seng ea motlakase - e bolokehile bakeng sa liboutu tsa Grade 8.8-10.9 tse matla haholo.
- Khanyetso e phahameng ea corrosion: 500–1,200 hrs salt spray (ISO 9227), 5–10x e betere ho feta ho pola zinki.
- O mosesaane & o tšoanang: 4–10 µm e boloka ho lekana ha khoele le geometry ea flange. Ha ho hlokahale ho tlanya hape.
- E thibela mocheso le tikoloho: E mamella 250 ° C; Cr⁶⁺-mahala, RoHS/REACH e lumellana.
Coating Papiso
| Thepa | Dacromet | Ho roala zinki | Hot-Dip Galv. |
| Setlolo sa letsoai (lihora) | 500 - 1,200 | 96-240 | 300 - 1,000 |
| Hydrogen Embrittlement | Ha ho letho | Kotsi (Gr. 10.9+) | Ha ho letho |
| Botenya ba ho roala | 4 - 10 µm | 5 - 25 µm | 45 - 85 µm |
| Thread Fit Impact | Nyenyane | Tlase | Bohlokoa |
| Ho hanyetsa Mocheso | 250°C | 200°C | 250°C |
| Ponahalo | Silver-grey, matte | Bosoeu bo boputsoa | E kganyang / e spangled |
Kakaretso
Li-bolts tsa Dacromet flange li fana ka motsoako o nepahetseng oa ts'ebetso ea mochini le ts'ireletso ea kutu. Flange ea bohlokoa e aba mojaro le ho nolofatsa kopano, ha Dacromet zinc-aluminium flake coating e fana ka lihora tse 500-1,200 tsa ho hanyetsa spray ea letsoai ntle le hydrogen embrittlement. Li-fasteners tsena li sebelisoa haholo mesebetsing ea likoloi, kaho, matla a moea, le lits'ebetsong tsa leoatle moo ho ts'epahalang le ho tšoarella ha nako e telele ho bohlokoa.
