Ungakhetha kanjani inqubo yokwelashwa kwe-surface ye-fasteners?

Cishe zonke izinsimbi zenziwe nge-carbon steel ne-alloy steel, futhi izinsimbi ezijwayelekile kulindeleke ukuthi zivikele ukugqwala. Ngaphezu kwalokho, ukumbozwa kokwelashwa kwendawo kufanele kuhambisane ngokuqinile.

Ngokuqondene nokwelashwa okungaphezulu, abantu ngokuvamile banaka ubuhle nokuvikela ukugqwala, kodwa umsebenzi oyinhloko wezinsimbi ukuxhumanisa okuqinile, futhi ukwelashwa okungaphezulu nakho kunethonya elikhulu ekusebenzeni okuqinile kwezinsimbi. Ngakho-ke, lapho sikhetha ukwelashwa okungaphezulu, kufanele futhi sicabangele isici sokusebenza kokuqinisa, okungukuthi, ukuhambisana kwe-torque yokufaka nokulayisha kuqala.

1. I-Electroplating

I-Electroplating ye-fasteners isho ukuthi ingxenye yezinsimbi okufanele zifakwe i-electroplated icwiliswa kusisombululo esithile samanzi, esizoqukatha ezinye izinhlanganisela zensimbi ezifakiwe, ukuze kuthi ngemva kokudlula isisombululo esinamanzi esinamanje, izinto zensimbi ezisesixazululweni zizoncipha futhi zinamathele engxenyeni ecwilisiwe yezibophelelo. I-Electroplating of fasteners ngokuvamile ihlanganisa i-galvanizing, ithusi, i-nickel, i-chromium, i-copper-nickel alloy, njll.

2. Phosphating

I-Phosphating ishibhile kune-galvanizing, futhi ukumelana kwayo nokugqwala kubi kakhulu kunokwenza uthayela. Kunezindlela ezimbili ezivame ukusetshenziswa ze-phosphating zokubopha, i-zinc phosphating kanye ne-manganese phosphating. I-Zinc phosphating inendawo yokugcoba engcono kune-manganese phosphating, futhi i-manganese phosphating inokumelana nokugqwala okungcono futhi ukumelana nokugqoka kunokwemboza kwe-zinc. Imikhiqizo ye-Phosphating efana nama-rod bolts namantongomane ezinjini, ama-cylinder heads, ama-main bearings, ama-flywheel bolts, ama-wheel bolt namantongomane, njll.

3. I-oxidation (imnyama)

I-Blackening+oiling iyi-coating edumile yezinsimbi zasezimbonini, ngenxa yokuthi ingabizi kakhulu futhi ibukeka iyinhle ngaphambi kokuba kuphele ukusetshenziswa kukaphethiloli. Ngenxa yokuthi umbala omnyama awunawo amandla okuvikela ukugqwala, uzogqwala ngokushesha ngemva kokuba ungenayo uwoyela. Ngisho nalapho kukhona amafutha, ukuhlolwa kwesifutho sikasawoti esingathathi hlangothi kungafinyelela amahora angu-3 ~ 5 kuphela.

4. Zinc yokudipha eshisayo

I-hot galvanizing iyimbobo yokusabalalisa okushisayo lapho i-zinc ishiselwa khona ibe uketshezi. Ugqinsi lwalo lokumboza luyi-15 ~ 100μm, futhi akulula ukulilawula, kodwa linokumelana nokugqwala okuhle, ngakho livame ukusetshenziswa kubunjiniyela. Ngenxa yezinga lokushisa le-hot-dip zinc processing, (340-500C) ayikwazi ukusetshenziselwa izibophelelo ezingaphezu kwebanga le-10.9. Intengo ye-hot-dip galvanizing of fasteners iphezulu kunaleyo ye-electroplating.

5. Ukufakwa kwe-zinc

I-Zinc impregnation iyingxube eqinile ye-metallurgical thermal diffusion ye-zinc powder. Ukufana kwayo kuhle, futhi ngisho nezingqimba zingatholakala emicu nasemigodini eyimpumputhe. Ubukhulu be-coating buyi-10 ~ 110μm, futhi iphutha lingalawulwa ngaphakathi kwe-10%. Amandla ayo okubopha kanye nokusebenza kwe-anti-corrosion ne-substrate kungcono kakhulu phakathi kwezingubo ze-zinc (i-electro-galvanizing, i-hot-dip galvanizing kanye ne-dacromet). Inqubo yayo yokucubungula ayingcolisi futhi ihambisana kakhulu nemvelo. Uma singacabangi i-chromium nokuvikelwa kwemvelo, empeleni ifaneleka kakhulu izibophelelo zamandla aphezulu ezinezidingo eziphakeme zokulwa nokugqwala.

Inhloso eyinhloko yokwelashwa okungaphezulu kwama-fasteners ukwenza ama-fasteners athole ikhono lokulwa nokugqwala, ukuze kwandiswe ukwethembeka nokuvumelana nezimo zezinsimbi.