Dacromet Flat Washers: Tlhaloso e Feletseng 

1. Selelekela

Li-washer tse bataletseng ke likarolo tsa bohlokoa lits'ebetsong tsa ho tiisa tsa mochini. Li-discs tsena tse tšesaane, tse bataletseng tse nang le lesoba le bohareng li aba moroalo oa bolt kapa screw, li sireletsa libaka tse kopaneng hore li se ke tsa senyeha, 'me li ntlafatsa ho ts'epahala ha khokahano. Libakeng tse senyang—tse kang tse pepeselitsoeng mongobo, letsoai la litsela, lik’hemik’hale, kapa mocheso o phahameng—lihlatsoana tsa tšepe tse sa phekoloeng kapa tse entsoeng ka zinki hangata li hola pele ho nako, e leng se lebisang ho fokotseng matla a ho kokota, ho hloleha ha manonyeletso, kapa tlhokomelo e bitsang chelete e ngata.

Ho rarolla bothata bona, ho entsoe liphekolo tse tsoetseng pele. Har'a tse atlehang ka ho fetisisa ke Ho roala ka Dacromet, Sisteme ea zinc-aluminium flake e sebelisoang haholo ho liwasha tse bataletseng bakeng sa tšebeliso ea likoloi, kaho, tsa metsing le tsa indasteri. Sengoliloeng sena se hlahisa li-washer tse bataletseng tsa Dacromet, tse hlalosang theknoloji ea ho roala, thepa ea bohlokoa, litekanyetso, melemo, lits'ebetso, le ho bapisa le liphetho tse ling.

2. Dacromet Coating ke eng?

Dacromet (DACROMET®) ke seaparo se se nang motlakase, se entsoeng ka metsi se entsoeng ka zinki le li-flakes tsa aluminium tse qhalakantsoeng ka har'a chromate binder. E qalileng ho ntlafatsoa lilemong tsa bo-1970 ho loantša ho bola ha letsoai tseleng likoloing, e sebelisoa ka mekhoa ea dip-spin, spray, kapa dip-drain ka mor'a hore alkaline e tlosoe le ho hloekisa ka mechine (ha ho sebelisoa pickling ea acid). Ho roala ka nako eo ho phekoloa hoo e ka bang 300 ° C, ho hlahisa e tšesaane (ka tloaelo 5-15 μm), filimi e ts'oanang ea tšepe ea silevera-gray e khomarelang ka thata ho substrate ea tšepe.

Mochine oa eona oa tšireletso o sebetsa ka litsela tse tharo tse tlatsetsang:

1. Tšireletso ea mokoallo - li-flakes tsa zinki le aluminium tse pota-potiloeng li theha mokoallo o teteaneng oa 'mele khahlanong le mongobo, oksijene le lintho tse senyang.
2. Tšireletso ea Cathodic (sehlabelo). - zinc corrodes ka ho khetheha, ho sireletsa tšepe e ka tlaase le haeba seaparo se senyehile hanyenyane.
3. Boikemisetso - Metsoako ea chromium e theha lifilimi tse tsitsitseng tsa oxide tse liehisang ho bola le ho thusa ho koala mefokolo e menyane.

3. Lintho tsa Bohlokoa tsa Dacromet Flat Washers

3.1 Khanyetso e Phahameng ea Corrosion

Ka tlhahlobo e sa nkeng lehlakore ea letsoai-spray (ASTM B117 / ISO 9227), liaparo tsa Dacromet hangata li finyella lihora tse 500-1,000 + ntle le mafome a khubelu-hangata 5-10 linako tse telele ho feta electroplating e tloaelehileng ea zinc ea botenya bo tšoanang. Boima bo phahameng ba ho roala (Kereiti ea B kapa mefuta e fapaneng ea botenya bo phahameng) e ka feta lihora tse 1,000, e tšehetsa bophelo ba ts'ebeletso ea lilemo tse 5-15 kapa ho feta tikolohong e thata ea kantle kapa e tlase.

3.2 Ho hanyetsa Mocheso o Phahameng

Ho roala ho boloka botšepehi le thepa ea tšireletso ho fihlela hoo e ka bang 300 ° C (572 ° F). Sena se etsa hore li-washer tse bataletseng tsa Dacromet li loketse likarolo tse haufi le lienjineri, litsamaiso tsa mouoane, likopano tsa braking, le mehloli e meng ea mocheso moo plating e tloaelehileng ea zinki e ka nolofatsang, e ebolang kapa e lahleheloang ke ho hanyetsa ho bola.

3.3 Ha ho na Hydrogen Embrittlement

Hobane ts'ebetso ena ha e na electrolytic mme e qoba ho khetha acid, Dacromet ha e hlahise kotsi ea ho emisoa ha haedrojene. Ona ke monyetla o moholo bakeng sa liwasher tse matla a holimo (likereiti tse thata tsa 200 HV, 300 HV le ho feta) le ho sebelisoa hammoho le liboutu tse matla haholo (Kereiti ea 10.9 le holimo), moo ho phatloha ho bakoang ke haedrojene e leng taba e tšoenyang haholo ka li-electroplated finishes.

3.4 Filimi e tšesaane, e Uniform le Melemo e Ekelitsoeng

Ka botenya bo tloaelehileng ba filimi e omileng ea 5-12 μm feela, ho roala ha ho fetole boholo ba litekanyo tse tebileng kapa ho hlakoloa ha likhoele, ho boloka ts'ebetso e nepahetseng le ho koala. Melemo e meng e kenyelletsa ho khomarela ka matla ho substrate, pente e ntle, coefficient e laoloang ea likhohlano (haholo-holo ha ho sebelisoa topcoat e tlotsitsoeng), le ho lumellana ha bimetallic le likarolo tsa aluminium.

4. Maemo, Lisebelisoa, le Litlhaloso

Li-washer tsa Dacromet flat li entsoe ho latela litekanyetso tse tsebahalang tsa machaba, ho kenyeletsoa DIN 125, ISO 7089, DIN 9021, le ANSI/ASME B18.22.1. Lisebelisoa tsa motheo ke haholo-holo carbon steel e fanoang ka limaraka tse thata tse kang 100 HV, 140 HV, 200 HV, kapa 300 HV; mefuta ea tšepe e sa hloekang le eona e teng bakeng sa litlhoko tse khethehileng. Boholo bo atisa ho tloha ho li-diameter tse nyenyane tsa metric (M1.6 / Φ1.7 mm) ho ea ho boholo bo boholo (M160 / Φ165 limilimithara le ho feta), tse koahelang li-washer tse tloaelehileng le tse kholo tsa ka ntle-diameter (fender). Limaraka tsa ho koahela hangata ke Kereiti A (e ka bang 24 g/m²) kapa Kereiti ea B (e ka bang 36 g/m²), hangata e fanoa ka lijase tsa boikhethelo tse ntlafatsang ts'ebetso ea lubricity kapa corrosion. Barekisi ba tsebahalang ba fana ka litlaleho tsa tlhahlobo ea setlolo sa letsoai, litekanyo tsa botenya, le litifikeiti tsa thepa.

5. Melemo ho feta Liaparo tse Tloaelehileng

• Bophelo ba tšebeletso bo atolositsoeng - Ts'ireletso ea nako e telele haholo e fokotsa nako ea tlhokomelo le litšenyehelo tse ncha.
• E bolokehile bakeng sa li-fasteners tse matla haholo - ho ba sieo ka ho feletseng ha hydrogen embrittlement kotsi.
• Ho nepahala ha dimensional - filimi e tšesaane e boloka mamello le likamano tse nepahetseng tsa khoele.
• Ho tsitsa ha mocheso - ts'ebetso e tšepahalang libakeng tsa mocheso o phahameng.
• Theko e ntle ea potoloho ea bophelo - leha theko ea yuniti ea pele e le holimo ho feta zinc plating, bophelo bo bolelele ba ts'ebeletso le nako e fokotsehileng hangata e hlahisa litšenyehelo tse tlase tsa ho ba beng.

6. Likopo tse Tloaelehileng

Likoloi: Chassis, suspension, underbody, exhaust, le li-fasteners tsa kamore ea enjene tse pepesehileng letsoai le mongobo tseleng. Li-OEM tse ngata le barekisi ba Tier-1 ka ho khetheha ba hloka liphahlo tsa zinc-flake joalo ka Dacromet bakeng sa liwasha le li-fasteners tsa bohlokoa.

Kaho le Likaho: Likhokahano tsa tšepe tsa meralo, marokho, lithanele, lipolanete tsa kantle ho naha, sekala, terata le lisebelisoa tsa ka ntle tsa meralo tse tlamehang ho mamella ho pepeseha ha nako e telele kantle.

Makala a mang: Lisebelisoa tsa leoatleng le lebopong la leoatle, mechini ea temo le ea kaho, lits'ebetso tsa terene le lipalangoang, litora le li-nacelles tse fehlang moea, thepa e tšoeu le lisebelisoa, le likopano tse akaretsang tsa indasteri tse sebetsang libakeng tse senyang kapa tse mongobo o mongata.

7. Ho bapisa le Melaetsa e meng

Electroplating ea zinki ha e theko e tlaase ebile e fumaneha hohle, leha ho le joalo e fana ka khanyetso e fokolang ea letsoai-spray (ka tloaelo lihora tse 72-200) 'me e na le kotsi ea hydrogen-embrittlement likarolong tse matla a phahameng.

Ho kenya galvanizing e chesang e fana ka ts'ireletso e ntle ea kutu le boits'oaro ba sehlabelo, empa ho roala ha motenya ho ka kena-kenana le khoele e lekanang le ho nepahala ha sebopeho, ho etsa hore e se ke ea tšoanela li-washer tse nepahetseng kapa tse nyane.

Litsamaiso tse ling tsa zinc-flake (mohlala Geomet®) fana ka ts'ebetso ka sehlopha se akaretsang se tšoanang le sa Dacromet. Khetho ea ho qetela hangata e itšetlehile ka litlhaloso tse khethehileng tsa OEM, likhetho tse fumanehang tsa topcoat, le liketane tsa phepelo ea libaka. Ka kakaretso, Dacromet e fana ka tekanyo e sebetsang ea botenya ba filimi e tšesaane, khanyetso e phahameng ea kutu, botsitso ba mocheso, le tokoloho ho tsoa ho hydrogen embrittlement.

8. Qetello

Dacromet flat washers kopanya melemo ea mechine ea li-washers tse tloaelehileng tse sephara-kabo ea mojaro le tšireletso ea holim'a metsi-ka seaparo se tsoetseng pele sa zinc-aluminium flake se fanang ka ho hanyetsa ha kutu, ts'ebetso e phahameng ea mocheso le ts'ireletso bakeng sa lisebelisoa tse matla haholo. Filimi ea bona e tšesaane, e ts'oanang, lesika le netefalitsoeng la likoloi, le bophelo bo bolelele ba ts'ebeletso e ba etsa khetho e ratoang ho pholletsa le makala a makoloi, a kaho, a likepe le a pharalletseng a indasteri.

Ha u hlakisa li-washer tsena, ho lokela ho lebisoa tlhokomelo ho sehlopha sa boima bo hlokahalang, tekanyo ea dimensional (DIN, ISO, kapa ANSI), boima ba ho roala kapa kereiti, le tlhoko efe kapa efe ea lijase tse tlositsoeng. Ho sebelisana le bahlahisi ba ka fanang ka lintlha tsa tlhahlobo ea spray-spray le litifikeiti tsa thepa ho thusa ho netefatsa ts'ebetso e tšepahalang ts'ebetsong. Lits'ebetsong moo ho bola, mocheso, kapa matla a phahameng e leng lintlha tsa bohlokoa, li-washer tse koahetsoeng ka Dacromet li lula e le tharollo e netefalitsoeng le e theko e boima.

- Qetello ea Sengoloa -