Dacromet Hex Nuts-Technical Kenyelletso 

1. Selelekela

Hexagonal nuts (hex nut) ke tse ling tsa li-fasteners tse sebelisoang haholo likopanong tsa mochini, tsa kaho, tsa likoloi le tsa indasteri. Ha li kopantsoe le liphekolo tse tsoetseng pele tse kang ho roala ha Dacromet, li fana ka khanyetso e ikhethang ea kutu ha li ntse li boloka mamello e nepahetseng le bots'epehi ba mochini.

1.1 Hex Nuts ke Eng?

Hex nut ke mofuta oa fastening e nang le sebopeho sa ka ntle sa hexagonal le lesoba le hare-hare. Moqapi o nang le mahlakoreng a tšeletseng o lumella ts'ebeliso e sebetsang ea torque e sebelisang li-wrenches kapa li-sockets tse tloaelehileng. Hex nut hangata e etsoa ho ea ka maemo a machaba a kang ISO 4032 (setaele sa 1 sa linate tse tloaelehileng), DIN 934, kapa ASME B18.2.2, e koahelang mefuta e mengata ea metric le boholo ba boemphera.

Likarolo tsa bohlokoa tsa jiometri li kenyelletsa bophara ba khoele ea lebitso (d), sekontiri (P), bophara ho lifolete (li-f), bophara ho likhutlong (e), le bophahamo ba linate (m). Lihlopha tsa thepa (mohlala, 8, 10, 12 bakeng sa tšepe) li hlalosa matla a mochine ho tsamaisana le limaraka tse tsamaellanang tsa bolt.

1.2 Kakaretso ea Dacromet Coating

Dacromet ke setlolo se entsoeng ka metsi, se se nang electrolytic zinc-aluminium flake se entsoeng ka bo-1970. E na le zinki tse hasantsoeng hantle le li-flakes tsa aluminiamo tse fanyehiloeng ka har'a setlamo sa chromate (kapa se se nang chromium). E sebelisoa haholo-holo ka mekhoa ea dip-spin kapa ea ho fafatsa 'me e phekoloa hoo e ka bang 280-320 ° C, e etsa filimi e sireletsang e tšesaane (ka tloaelo 5-12 μm), junifomo, silevera-gray.

Ho fapana le mekhoa e tloaelehileng ea electroplating kapa hot-dip galvanizing, Dacromet e fana ka tšireletso e phahameng ea ho senya ntle le kotsi ea hydrogen embrittlement-e etsang hore e tšoanelehe ka ho khetheha bakeng sa li-fasteners tse matla haholo (grade 10.9 le 12.9).

2. Dacromet Coating Technology

2.1 Sebopeho le Sebopeho

Ho roala ho entsoe ka likarolo tse fetang tsa zinki le li-flakes tsa aluminium tse tlanngoeng ke matrix a inorganic. Sebopeho sena sa lamellar se etsa mekoallo e mengata ea 'mele khahlanong le mongobo le li-ion tse senyang, ha zinki e fana ka tšireletso ea sehlabelo (galvanic). Aluminium e ntlafatsa thepa ea thibelo le ho hanyetsa mocheso.

Setšoantšo sa 2. Sebopeho se nolofalitsoeng sa li-multi-layer tsa seaparo sa Dacromet holim'a substrate ea tšepe

2.2 Ts'ebetso ea kopo

Tatelano e tlwaelehileng ya tshebetso ke:

1. Ho lokisa holim'a metsi - ho tlosa alkaline ho hloekisa le ho hloekisa ka matla (ha ho na ho khetha acid).
2. Tšebeliso ea ho roala - dip-spin kapa spray ea zinki-aluminium slurry e thehiloeng metsing.
3. Centrifuging - ho tlosa lesela le feteletseng ho netefatsa botenya bo lekanang.
4. Ho phekola - ho baka ka mocheso oa ~ 300 ° C metsotso e 15-30 ho etsa filimi e teteaneng ea inorganic. Ho ka sebelisoa lijase tse ngata bakeng sa limaraka tse holimo tsa tšebetso.

2.3 Melemo ea Bohlokoa

• Ho hanyetsa kutu ho ikhethang: lihora tse 1,000-2,000+ tsa letsoai (ASTM B117) ho mafome a khubelu - hangata ho feta makhetlo a 5-10 ho feta ho pata ha zinki.
• Ha ho na hydrogen embrittlement: Ts'ebetso e seng ea electrolytic e bolokehile bakeng sa tšepe e matla haholo (10.9 / 12.9).
• Ho roala ho tšesaane (5-12 μm): Ho boloka khoele e lekana le ho nepahala ha sebopeho; ha ho hlokahale overtapping.
• Ho hanyetsa mocheso o phahameng: Ts'ebeletso e tsoelang pele e fihlang ho 300 °C.
• Kakaretso e ts'oanang: Ho kenella ka mokhoa o phethahetseng ka har'a li-recesses, likhoele le li-geometri tse rarahaneng ka dip-spin.
• Li-coefficients tse sa fetoheng tsa likhohlano: Li ka kopanngoa le li-topcoat tse tlositsoeng bakeng sa ts'ebetso e laoloang ea torque-tension.

Setšoantšo sa 3. Papiso ea papiso ea ts'ebetso ea ho fafatsa letsoai

2.4 Papiso le Liphahlo tse ling

Letlapa la 1. Papiso ea ts'ebetso ea liaparo tse tloaelehileng tsa fastener

3. Hex Nuts - Maemo, Litekanyo & Matla

3.1 Maemo a Machaba

Litekanyetso tse atileng haholo bakeng sa metric hex nuts ke ISO 4032 (mokhoa oa 1 oa linate tse tloaelehileng) le tsa khale empa li ntse li sebelisoa haholo DIN 934. Litekanyetso tsena li hlalosa litekanyo, mamello, le limaraka tsa sehlahisoa (A, B, C). Lihlopha tsa thepa bakeng sa linate tsa tšepe li hlalositsoe ho ISO 898-2 (mohlala, lihlopha tsa 6, 8, 10, 12).

Tlhokomeliso: DIN 934 le ISO 4032 li fapana hanyane ka litekanyo tsa lifolete tsa boholo bo itseng (mohlala, M10, M12, M22). Kamehla netefatsa tšebelisano ha u kopanya litekanyetso.

3.2 Mekhoa e Tloaelehileng ea Metric (ISO 4032 Style 1)

Letlapa la 2. Litekanyo tse khethiloeng tsa metric hex nut (ISO 4032, mm). s = bophara ho pholletsa le lifolete; e = bophara ho pholletsa le likhutlo; m = bophahamo ba linate.

3.3 Thepa Litlelase & Matching

Linate li tlameha ho kopanngoa le matla a bolt ho netefatsa hore lenonyeletso le hlōleha ka mokhoa o laoloang (ka ho khetheha ka bolt). Likopano tse tloaelehileng tlas'a ISO 898-2:

• Sehlopha sa Bolt 8.8 → Sehlopha sa Nut 8 kapa ho feta
• Sehlopha sa Bolt 10.9 → Sehlopha sa Nut 10 kapa ho feta
• Sehlopha sa Bolt 12.9 → Sehlopha sa Nut 12

Ho roala ha Dacromet ho bohlokoa ka ho khetheha bakeng sa linate tsa sehlopha sa 10 le 12 hobane ts'ebetso ena ha e hlahise kotsi ea hydrogen embrittlement e ka senyang thepa e matla haholo.

4. Likopo tsa Dacromet Hex Nuts

Linate tsa hex tse koahetsoeng ka Dacromet li ipabola hohle moo ho hanyetsanang le kutu e phahameng, ho nepahala ha sebopeho, le ho ts'epahala ha mochini ho hlokahalang ka nako e le 'ngoe:

Likoloi le Lipalangoang

Likarolo tsa chassis, litsamaiso tse emisitsoeng, li-brake, li-fasteners tsa enjine, le likarolo tse ka tlas'a 'mele tse pepesehileng letsoai tseleng le mocheso o phahameng.

Matla a Moea & Libopeho tsa motheo

Liboutu tse tora le lifastening tsa motheo bakeng sa li-turbine tsa moea tse lebopong le lebopong la leoatle, moo ho pepeseha ha sesepa sa letsoai ho ka fetang lihora tse 2,000 tsa tlhokahalo ea ts'ireletso.

Kaho & Mechini e boima

Lihokelo tsa meralo, lisebelisoa tsa temo, mechini ea merafo, le lits'ebetso tsa kantle li ipapisitse le boemo ba leholimo le ho pepeseha ha lik'hemik'hale.

Tikoloho ea Marine & Lik'hemik'hale

Deck hardware, offshore platforms, and process equipment moo liphahlo tsa setso li senyehang ka potlako.

4.1 Litaelo tsa Khetho

Letlapa la 3. Tataiso e potlakileng ea khetho bakeng sa linate tsa hex tse koahetsoeng

5. Qetello

Dacromet hex nuts e kopanya ts'epo ea mochini le geometry e ts'oanang ea linate tsa setso tsa hexagonal le ts'ireletso e tsoetseng pele ea kutu ea theknoloji ea zinc-aluminium flake. Liaparo tsa tsona tse tšesaane, tse ts'oanang li boloka khoele le torque e tsitsitseng, ha li ntse li fana ka ts'ebetso ea spray ea letsoai e phahametseng haholo ho feta e tloaelehileng ea zinc plating 'me ha e na mathata a hydrogen-embrittlement.

Bakeng sa baenjiniere le bareki ba totobatsang li-fasteners bakeng sa likoloi, matla a ka nchafatsoang, meaho, kapa tikoloho e thata ea indasteri, linate tsa hex tse koahetsoeng ka Dacromet li fana ka tekanyo e netefalitsoeng ea ho tšoarella, ho nepahala, le katleho ea nako e telele.

Ha u khetha lihlahisoa, kamehla u netefatse boemo ba ho roala (A/B kapa e lekanang), tekanyo ea spray-spray, coefficient ea likhohlano (haeba ho sebelisoa topcoat e tlositsoeng), le ho lumellana le sehlopha sa bolt ea mating le maemo a tikoloho a kopo ea ho qetela.

Litšupiso le Maemo: ISO 4032, ISO 898-2, DIN 934, ASTM B117, maqephe a data a moetsi bakeng sa lisebelisoa tsa Dacromet / zinc-flake (mohlala, DACROMET®, GEOMET®).