Phantse zonke i-fasteners zenziwe nge-carbon steel kunye ne-alloy steel, kwaye i-fasteners jikelele kulindeleke ukuba ithintele ukubola. Ukongezelela, ukugquma kwonyango lomhlaba kufuneka kubambelele ngokuqinileyo.
Ngokuphathelele kunyango lomphezulu, abantu ngokubanzi banikela ingqalelo kubuhle kunye nokukhuselwa komhlwa, kodwa owona msebenzi uphambili wokuqhoboshela kuqhagamshelo olukhawulezayo, kwaye unyango olungaphezulu lunempembelelo enkulu ekuqiniseni ukusebenza kweziqhoboshi. Ke ngoko, xa sikhetha unyango olungaphezulu, kufuneka siqwalasele umba wokusebenza ngokukhawuleza, oko kukuthi, ukuhambelana kwetorque yokufaka kunye nokulayishwa kwangaphambili.
1. Electroplating
I-Electroplating ye-fasteners ithetha ukuba inxalenye ye-fasteners ukuba ifakwe kwi-electroplated ifakwe kwisisombululo esithile samanzi, esiya kuqulatha ezinye iikhompawundi zetsimbi ezigciniweyo, ukwenzela ukuba emva kokudlula kwisisombululo samanzi ngoku, izinto zetsimbi kwisisombululo ziya kudlula kwaye zibambelele. indawo entywilisiweyo yefasteners. I-Electroplating ye-fasteners ngokubanzi ibandakanya i-galvanizing, ubhedu, i-nickel, i-chromium, i-copper-nickel alloy, njl.
2. I-Phosphating
I-Phosphating inexabiso eliphantsi kune-galvanizing, kwaye ukuxhathisa kwayo ku-corrosion kubi ngaphezu kokufaka igalvanizing. Kukho iindlela ezimbini ezisetyenziswa ngokuqhelekileyo ze-phosphating zokuqinisa, i-zinc phosphating kunye ne-manganese phosphating. I-Zinc phosphating inepropathi yokuthambisa engcono kune-manganese phosphating, kwaye i-manganese phosphating inokumelana nokugqwala okungcono kunye nokunganyangeki kokunxiba kunokwetyalwa kwe-zinc. Iimveliso ze-Phosphating ezifana nokudibanisa i-rod bolts kunye namantongomane eenjini, iintloko ze-cylinder, ii-bearings eziphambili, i-flywheel bolts, i-wheel bolts kunye namantongomane, njl.
3. I-oxidation (ibamnyama)
Ukwenza i-blackening+oiling yingubo ethandwayo yeziqhoboshi zemizi-mveliso, kuba yeyona inexabiso eliphantsi kwaye ibonakala ilungile phambi kokuba kuphele ukusetyenziswa kwamafutha. Ngenxa yokuba i-blackening iphantse ingakwazi ukumelana nomhlwa, iya kuhlwa ngokukhawuleza emva kokuba ingenayo ioli. Nangona kukho ioli, uvavanyo lokutshiza ityuwa olungathathi hlangothi lungafikelela kuphela kwiiyure ezi-3 ~ 5.
4. I-zinc yokudipha eshushu
I-galvanizing eshushu yi-thermal diffusion coating apho i-zinc ifudunyezwa ibe lulwelo. Ubukhulu bayo bokugquma yi-15 ~ 100μm, kwaye akukho lula ukuyilawula, kodwa inokumelana ne-corrosion, ngoko isoloko isetyenziswa kubunjineli. Ngenxa yobushushu be-hot-dip processing zinc, (340-500C) ayinakusetyenziselwa iziqhoboshi ezingaphezulu kwebanga le-10.9. Ixabiso le-hot-dip galvanizing of fasteners liphezulu kunelo le-electroplating.
5. Ukufakwa kweZinc
Ukufakwa kwe-zinc yinto eqinileyo ye-metallurgical thermal diffusion coating ye-zinc powder. Ukufana kwayo kulungile, kwaye kunye neengqimba zinokufumaneka kwimicu kunye nemingxuma eyimfama. Ubunzima bengubo yi-10 ~ 110μm, kwaye impazamo inokulawulwa ngaphakathi kwe-10%. Amandla ayo okudibanisa kunye nokusebenza kwe-anti-corrosion kunye ne-substrate iyona nto ingcono kakhulu phakathi kweengubo ze-zinc (i-electro-galvanizing, i-hot-dip galvanizing kunye ne-dacromet). Inkqubo yayo ayingcoliseki kwaye yeyona ihambelana nokusingqongileyo. Ukuba asiyithatheli ngqalelo ichromium kunye nokukhuselwa kokusingqongileyo, yeyona nto ifaneleke kakhulu kwiziqhoboshi zokuqina ezineemfuno eziphezulu zokuchasana nomhlwa.
Injongo ephambili yonyango lomphezulu we-fasteners kukwenza i-fasteners ifumane amandla okulwa ne-corrosion, ukwenzela ukwandisa ukuthembeka kunye nokulungelelaniswa kwe-fasteners.
Ixesha lokuposa: Dec-08-2022