Dacromet Flange Bolts

2026-11-09

1. Selelekela

Lits'ebetsong tsa morao-rao tsa indasteri, botšepehi ba nako e telele ba manonyeletso a bolt bo itšetlehile haholo ka katleho tshireletso ya kutu le tshebetso e kgahlanong le mafome. Hangata li-zinc plating le hot-dip galvanizing li haella libakeng tse mabifi haholo joalo ka meaho ea lebopo, sethala sa kantle ho naha, limela tsa lik'hemik'hale le likoloi tse ka tlas'a likoloi tse pepesehileng letsoai la litsela. Liboutu tsa Dacromet flange kopanya melemo ea sebopeho sa moralo oa hlooho ea flange le tse hlahelletseng e thibelang mafome le anti-corrosion thepa ea li-zinc-aluminium flake coatings.

Dacromet (eo hape e tsejoang e le zinc flake coating) ke phekolo e se nang electrolytic, e thehiloeng holim'a metsi. E beha lesela le tšesaane empa le sebetsa haholo la zinki le li-flakes tsa aluminium tse kopantsoeng ke matrix ea chromate, e fanang ka mokhoa o ikhethang. tšireletso ea mokoallo, tšireletso ea cathodic ea sehlabelo, le Boiketsi ba ho iphekola. E sebelisoa ho li-bolts tsa flange, seaparo sena se fana ka ts'episo ea nako e telele ho hanyetsa mafome ntle le ho sekisetsa khoele e lekanang, ho nepahala ha torque, kapa ho hlahisa kotsi ea hydrogen embrittlement.

Setšoantšo sa 1. Li-bolts tse nang le matla a phahameng a Dacromet a nang le seaparo sa silevera-grey anti-corrosion finish.

2. Flange Bolts le Dacromet Coating Technology

Bolt ea flange e na le letlapa le pota-potileng ka tlas'a hlooho ea hexagonal e sebetsang joalo ka washer e hahelletsoeng kahare. Moralo ona o tsamaisa matla a ho thinya holim'a sebaka se seholo sa ho beleha, ho fokotsa tšenyo ea bokaholimo le ho ntlafatsa ho hanyetsa ho thothomela ho bakoang ke ho sisinyeha. Ha liboutu tsena li amohela kobo ea Dacromet, motsoako o fana ka sekhahla se fanang ka ts'epo ea mochini le ho feta. anti-rust le e thibelang ho bola tshebetso. Lesela le tšesaane (hangata 5-12 μm) le boloka geometry ea khoele e nepahetseng.

2.1 Sebopeho sa Coating le Ts'ebetso

Dacromet ke ho qhalakanngoa ka metsi ha li-flakes tsa zinki, li-flakes tsa aluminium le chromium oxides. Ts'ebetso e seng electrolytic hangata e kenyelletsa: (1) ho hloekisa holim'a metsi ntle le ho khetha acid e mabifi; (2) kopo ka dip-spin, dip-drain kapa spray; le (3) ho phekola hoo e ka bang 300 ° C ho kopanya li-flakes hore li be le likarolo tse fetang. Filimi e hlahisoang ea tšepe ea silevera-gray e fana ka li-multi-layer khanyetso ea oxidation le e ka tšeptjoang mokoallo oa mongobo.

2.2 Mekhoa ea Tšireletso ea Khoho

Dacromet e fihlella e ikhethang anti-corrosion tshebetso ka mekhoa e meraro ea synergistic:

Tšireletso ea Litšitiso: Li-zinc le li-aluminium flakes tse pota-potlanang li theha mokoallo oa 'mele oa labyrinthine o sitisang metsi, oksijene le li-ion tse senyang tse kang chloride.
Tšireletso ea Sehlabelo (Cathodic): Li-flakes tsa zinc li senya ka ho khetheha, li sebetsa e le anode ea sehlabelo e sireletsang karolo ea tšepe ho tloha ho thehoa ha mafome.
Passivation le Boipheliso: Metsoako ea Chromate e etsa filimi e sa sebetseng 'me e ka fallela ho mengoapo e menyenyane, e fana ka ts'ebetso e tsoelang pele thibelo ea mafomele bokgoni ba ho itokisa.

3. Melemo ea Bohlokoa ea Dacromet Flange Bolts

Ha ho bapisoa le liphekolo tse tloaelehileng tsa holim'a metsi, liboutu tsa Dacromet flange li fana ka motsoako o ikhethang oa melemo ea ts'ebetso:

Ho hanyetsana le Sefafatsi sa Letsoai se Phahameng: Ka tloaelo ho feta lihora tse 1,000-1,200 tsa tlhahlobo ea ho se nke lehlakore ka letsoai (ISO 9227) ntle le mafome a khubelu-hangata makhetlo a 7-10 ho feta liphahlo tse entsoeng ka motlakase.
Kotsi ea ho Ebrittlement ea Zero Hydrogen: Ts'ebetso e seng ea motlakase e felisa tlhahiso ea hydrogen, e etsa hore Dacromet e be e loketseng bakeng sa liboutu tse matla tsa Kereiti ea 8.8, 10.9 le 12.9.
Melaetsa e tšesaane, e tsitsitseng ka ho lekana: Ka 5-12 μm feela, ho roala ho boloka ho nepahala ha khoele 'me ho lumella linate tse tloaelehileng hore li sebelisoe ntle le ho tlanya hape.
Haholo-holo Heat Resistance: E boloka botšepehi bo sireletsang ho fihlela ho 300 ° C, e phahametse haholo liphahlo tse tloaelehileng tsa zinki tse senyang ka holimo ho 100-200 ° C.
Boemo ba Boemo ba Leholimo bo Hlollang le bo Hanyetsang Lik'hemik'hale: E hanela maemo a liindasteri, matsoai a litsela, li-acids tse bonolo le alkalis ha e ntse e fana ka nako e telele anti-rusttshebetso kantle.
Taolo e Ntle ea Khohlano: Ka li-topcoats tse tlositsoeng ka boikhethelo, coefficient ea khohlano e ka laoloa ka thata bakeng sa mojaro o tšepahalang oa clamp.

4. Papiso ea Ts'ebetso le Liaparo tsa Setso

Tafole e ka tlase e akaretsa liphapang tsa bohlokoa ho tshireletso ya kutu le litšobotsi tsa ho roala.

Thepa	Dacromet	Electro-Galvanizing	Hot-Dip Galvanizing
Botenya ba ho roala	5–12 μm	5–15 μm	40-80 μm
Salt Spray (ha ho na mafome a khubelu)	≥1,000–1,200 h	100–300 h	500–800 h
Hydrogen Embrittlement	Ha ho letho	Kotsi e phahameng	Kotsi e mahareng
Ho hanyetsa Mocheso	Ho fihlela ho 300°C	≤100°C	≤200°C
Thread Fit Impact	E nyane / e ntle haholo	Hanyane	Hangata e hloka ho tlanya hape

Letlapa la 1. Ts'ebetso e bapisoang ea Dacromet le liaparo tse tloaelehileng tsa zinki bakeng sa li-fasteners.

5. Likopo tse Tloaelehileng

Li-bolts tsa Dacromet flange li hlalositsoe kae kapa kae moo li phahameng khanyetso ea kutu e tlameha ho kopanngoa le botšepehi ba mochine:

Likoloi: Chassis, suspension, brake systems le likaroloana tse ka tlas'a 'mele tse pepesehileng letsoai tseleng.
Matla a moea le maoatle: Li-flanges tsa toreng, likopano tsa nacelle le likhokahano tsa meralo tikolohong ea letsoai.
Kaho le meralo: Marokho, meaho e lebopong la leoatle, litšiea tse hlokang nako e telele thibelo ea mafome.
Mechini e boima le seporo: Thepa libakeng tse mongobo kapa tse nang le lik'hemik'hale tse mabifi moo anti-corrosionts'ebetso e bohlokoa.

6. Litlhaloso Tse Tloaelehileng

Li-bolts tsa Dacromet flange li etsoa ho latela maemo a maholo a machaba le limaraka tsa matla:

Paramethara	Mefuta e Tloaelehileng / Maemo
Litekanyetso	DIN 6921, ISO 4162, GB/T 5787 / 5789, ASME B18.2.1
Matla Kereiti	8.8, 10.9, 12.9 (metric); SAE Kereiti ya 5/8 (inch)
Khoele Diameter	M5–M24 (metric); 1/4"–5/8" (ea borena)
Length Range	10 mm - 200 mm (bolelele bo tlwaelehileng bo teng)
Botenya ba ho roala	Ka tloaelo 5–12 μm (mefuta ea Kereiti A / B)
Ponahalo	Metallic silver-gray (matte)

7. Tlhophiso e Molemo ka ho Fetisisa Mekhoa le Qetello

Ho maximize the anti-corrosion bophelo ba ts'ebeletso ea li-bolts tsa Dacromet flange: sebelisa linate tse koahetsoeng ka Dacromet le li-washer moo ho khonehang; latela litekanyetso tsa torque tse khothalelitsoeng (khohlano e laoloang e tšehetsa mojaro o nepahetseng oa clamp); qoba tšenyo e feteletseng ea mechine nakong ea ho tšoara; le ho boloka li-fasteners maemong a omileng pele o sebelisoa.

Ka bokhutšoanyane, li-bolts tsa Dacromet flange li emela tharollo e tsitsitseng, e sebetsang ka mokhoa o phahameng e sebetsanang ka katleho le litlhoko tse peli tsa ho tšepahala ha mechine le nako e telele. tshireletso ya kutu. Ka ho kopanya melemo ea ho tsamaisa thepa ea moralo oa flange o kopantsoeng le lesela le lesesaane, le sebetsang hantle haholo la zinc-aluminium flake, li-fasteners tsena li fana ka mokhoa o ikhethang. anti-rust ts'ebetso, ho felisa likotsi tsa hydrogen embrittlement, le ho boloka taolo e nepahetseng ea likarolo.

Litikolohong tseo ho tsona li-fasteners tse tloaelehileng tsa electro-galvanized kapa hot-dip dip galvanized li ka senyeha pele ho nako. mafome le ho senyeha-mabōpo a leoatle, leoatleng, likoloi, le liindasteri-li-bolts tsa Dacromet flange li fana ka mokhoa o tiisitsoeng, o tšoarellang. Bokhabane ba bona boemo ba leholimo, khanyetso ea oxidation, le tshireletso ya sehlabelo Mekhoa e netefatsa bophelo bo atolositsoeng ba ts'ebeletso le ho fokotsa litšenyehelo tsa tlhokomelo, e leng se etsang hore e be khetho e ratoang haholo bakeng sa baenjiniere le baqapi lefatšeng ka bophara.