Dacromet Coating Bolts- Tataiso e Felletseng ea Theknoloji ea ho Coating ea Zinc-Aluminium Flake bakeng sa Fasteners 

1.Dacromet ke Eng?

Dacromet e ile ea ntlafatsoa ho elella bofelong ba lilemo tsa bo-1960 ke k'hamphani ea Amerika Diamond Shamrock (hamorao MCI, ka nako eo NDS / Doerken MKS). Qalong e bōpiloe ho sebetsana le ho hlōleha ha hydrogen embrittlement ho li-fasteners tsa likoloi tse matla haholo, e se e le mokhoa o tsebahalang lefatšeng ka bophara oa ho thibela ho bola, o boletsoeng tlas'a ISO 10683, ASTM B695, le maemo a fapaneng a naha (GB/T 18684 Chaena).

Litšobotsi Tsa Sehlooho

Ts'ebetso e seng ea electrolytic: Dacromet e sebelisoa ka ho roala ka dip-spin, eseng electroplating. Ha ho motlakase o fetang likarolong, o felisa tlhahiso ea hydrogen le kotsi e amanang le embrittlement.

Coating e thehiloeng ho Flake: Ho roala ho na le li-microscopic zinki le li-aluminium flakes (botenya ba 20-60 nm) tse kopanang joalo ka lithaele tsa marulelo, tse etsang mokoallo o teteaneng, o nang le mekoallo e mengata.

E tšesaane ebile e tšoana: Botenya bo tloaelehileng ba ho roala ke 4-10 µm - e tšesaane ka ho lekaneng ho boloka khoele e lekana le ho mamellana ka mahlakoreng a mabeli, ho fapana le ho roala hot-dip galvanizing.

E lumellana le tikoloho: Dacromet ea sejoale-joale ha e na chromium e hexavalent (Cr⁶⁺), e kopanang le litaelo tsa RoHS, REACH, le ELV (End-of-Life Vehicle).

E thibela mocheso: The inorganic coating e mamella mocheso o tsoelang pele oa ts'ebeletso ho fihla ho 250 ° C, e etsa hore e tšoanelehe bakeng sa sebaka sa enjine le li-fasteners tse haufi le mosi.

2.Key Melemo

Khanyetso e phahameng ea corrosion: Lihora tse 500-1,200 tsa setlolo sa letsoai se sa nke lehlakore (NSS) ho latela ISO 9227 - makhetlo a 5-10 ho feta plating e tloaelehileng ea zinki (96-240 hrs).

Zero hydrogen embrittlement: Ts'ebetso e se nang electrolytic e felisa ho kenngoa ha hydrogen, ho etsa hore Dacromet e be seaparo se khethiloeng bakeng sa li-fasteners tse matla haholo (Grade 8.8-12.9) moo electroplating e thibetsoeng kapa e thibetsoeng.

Tšebeliso e ntle ea coating: Dip-spin coating e apesa bokahare, masoba a foufetseng, le lijeometri tse rarahaneng ka mokhoa o ts'oanang ho feta electroplating kapa hot-dip galvanizing. Li-thread crests le metso li fumana tšireletso e tsitsitseng.

Ho roala ho tšesaane, mamello e bolokiloeng: Ho 4-10 µm, Dacromet ha e kena-kenane le likamano tsa khoele kapa likamano tsa tsitsipano ea torque. Ha ho hlokehe ho tlanya linate hape, ho fapana le li-fasteners tse chesehang tse chesang.

Ho hanyetsa mocheso: Thepa e sa tsitsang e kang ea ceramic e boloka thepa ea eona ea tšireletso mochesong oa ho fihla ho 250 ° C (e tsoelang pele) le 300 ° C (nako e khutšoanyane), e fetang hōle liphahlo tsa tlhaho.

Ho latela tikoloho: Ha e na Cr⁶⁺, e tsamaellana le litaelo tsa RoHS, REACH, le ELV. Mokelikeli oa ho roala o thehiloeng metsing o na le mesi e fokolang ea VOC ha e bapisoa le mefuta e meng e thehiloeng ho solvent.

Ho khomarela hantle le ho hanyetsa ho apara: Thepa ea flake e kopantsoeng ka lik'hemik'hale e hanana le ho pshatleha, ho ngoapa le ho sebetsana le tšenyo e ntle ho feta ho rala ka mokhoa o tloaelehileng.

3. Ha ho bapisoa le Liaparo tse ling

Tafole e ka tlase e bapisa Dacromet le mefuta e 'meli e tloaelehileng ea ho roala li-fasteners - electroplated zinc plating le hot-dip galvanizing:

Ho fafatsa letsoai ho latela ISO 9227 NSS. Kotsi ea hydrogen embrittlement e sebetsa ho li-fasteners tsa electroplated Kereiti ea 10.9 le ho feta.

4. Lisebelisoa

Likoloi: Likarolo tsa enjine, li-fasteners tsa chassis, li-brake system, likarolo tse emisitsoeng, le lisebelisoa tsa ka tlas'a 'mele. Dacromet e hlalositsoe ke li-OEM tse kholo (VW, Toyota, GM, Ford) bakeng sa liboutu tse matla haholo (Kereiti ea 8.8-10.9) moo ho tlameha ho qojoa hydrogen embrittlement.

Kaho le meralo: Likhokahano tsa litšepe, li-hardware tsa borokho, li-fasteners, le maqhama a sebopeho sa konkreite a pepesehileng tikolohong e mongobo le e senyang.

Motlakase le matla: Liboutu tsa tora ea phetisetso, lisebelisoa tsa switchgear, le li-fasteners tse koaletsoeng ka motlakase tse hlokang ho tšoarella ha nako e telele kantle.

Terene le lipalangoang: Li-rolling stock fasteners, likarolo tsa pina, le lisebelisoa tsa lisebelisoa tsa lipontšo tse pepesehileng letsoai la de-icing le corrosion ea sepakapaka.

Marine le lebopo: Li-hardware tsa boema-kepe le tsa boema-kepe, lifasefate tsa sethala tse lebopong la leoatle, le lisebelisoa tse sebakeng se tletseng letsoai (tse tlatselletsoang ka topcoat ea sealer bakeng sa tšireletso e phahameng).

Matla a moea: Liboutu tsa tower flange, hardware ea nacelle, le liboutu tsa ankora tsa motheo tse hlokang lilemo tse mashome tsa ts'ireletso ntle le kutu.

Lisebelisoa le HVAC: Lisebelisoa tse futhumatsang mocheso, likarolo tsa sebopi, le lisebelisoa tsa kantle tsa yuniti moo ho hanyetsanang le mocheso le ts'ireletso ea kutu li hlokahalang ka bobeli.

Kakaretso

Dacromet ke theknoloji e tiisitsoeng, e sebetsang hantle e thibelang kutu e sebetsang hantle bakeng sa li-fasteners tsa tšepe. Sebopeho sa eona se ikhethang sa zinc-aluminium flake, se sebelisoang ka mokhoa o se nang electrolytic dip-spin, se fana ka lihora tse 500-1,200 tsa ho hanyetsa ha letsoai ntle le hydrogen embrittlement - ho etsa hore e be khetho ea khetho bakeng sa liboutu tse matla haholo makaleng a likoloi, kaho le matla. Ka filimi ea eona e tšesaane, e ts'oanang, ho lumellana le tikoloho, le ho hanyetsa mocheso o babatsehang, Dacromet e koala lekhalo pakeng tsa li-zinc plating tse theko e tlaase le tšepe e sa hloekang e theko e boima, e fanang ka tekanyo e nepahetseng ea ts'ebetso, botšepehi le litšenyehelo bakeng sa ho batla likopo tsa fasteners.