Nyob rau hauv cov txheej txheem ntawm kev tsim cov qauv, cov qauv tsim cov khoom feem ntau txhim khu kev tiv thaiv- xeb thiab xeb- pov thawj peev xwm ntawm cov khoom siv los ntawm kev kho saum npoo.
Thawj, electro-galvanized
Electrogalvanizing yog txoj kev kho saum npoo uas siv ntau tshaj plaws thiab cov txheej txheem thev naus laus zis hauv kev tsim cov khoom siv los ntawm cov tuam txhab tsim khoom. Electro-galvanized txheej yog txheej txheej anodic, uas yog siv los txhim kho corrosion kuj ntawm substrates. Vim nws nyias txheej thickness, nws yog tsuas yog siv rau nto corrosion tiv thaiv nyob rau hauv ib puag ncig tej yam kev mob. Tom qab chromate passivation kev kho mob, nws cov kev tiv thaiv kev tiv thaiv - corrosion kuj zoo heev, thiab cov electro{2}}galvanized txheej zoo heev tuaj yeem siv rau kev tiv thaiv sab nraum zoov, tab sis kev tiv thaiv kev tiv thaiv - corrosion kuj tsis zoo. nyob rau hauv hnyav industrial cua thiab ntug hiav txwv huab cua. Cov txheej txheem electro-galvanized nto kho thiab txheej txheem thev naus laus zis muaj qhov zoo ntawm cov nqi qis, ruaj khov thiab txhim khu kev qha thiab siv tau yooj yim. Txawm li cas los xij, hydrogen embrittlement yog qhov yooj yim tshwm sim, yog li kev kho hydrogen tshem tawm yuav tsum tau ua raws sijhawm tom qab electro-galvanizing. Tsis tas li ntawd, cov kua qaub thiab alkali kuj tsis zoo, lub sij hawm anticorrosion luv luv, thiab cov txheej txheem kev tiv thaiv ib puag ncig yog tsawg.
Qhov thib ob hom, hmoov sherardization
Hmoov galvanizing yog txheej txheem kho saum npoo uas siv cov zinc immersion tus neeg sawv cev los ntawm zinc, thiab tsim zinc los ntawm cua sov, thiab hlau atoms diffuse rau ib leeg los ua zinc-dipping txheej (zinc{1}} hlau alloy txheej) ntawm cov hlau. Nws cov ntsiab lus tseem ceeb yog cov hmoov zinc ntshiab, uas tau ntxiv nrog cov khoom tsim nyog xws li alumina, refractory av nplaum thiab ammonium chloride. Nws qhov tseem ceeb tshaj plaws yog tsis yog txheej txheej sab nraud, tab sis lub hauv paus hlau thiab txheej infiltrating tsim ib qho organic tag nrho, yog li kev sib xyaw ua ke yog ruaj khov. Lub hardness thiab corrosion kuj ntawm cov hmoov zinc txheej yog zoo dua li cov electrogalvanized txheej.
Cov txheej txheem hmoov galvanizing tshwj xeeb tshaj yog tsim rau saum npoo los tiv thaiv- kev kho corrosion ntawm cov txiv ntoo, bolts thiab lwm yam fasteners, nrog rau cov khoom siv me me, cov khoom ua haujlwm nrog cov duab nyuaj thiab cov khoom siv hmoov metallurgy.
Qhov thib peb hom, mechanical galvanizing
Mechanical galvanizing yog siv los ntawm kev cuam tshuam xov xwm (xws li iav pob) nyob rau hauv lub xub ntiag ntawm zinc hmoov, dispersants, accelerators, kua xov xwm (feem ntau yog dej) thiab lwm yam khoom los cuam tshuam lub nto ntawm steel qhov chaw, thiab tsim nyob rau hauv lub nto ntawm cov khoom. . Cov txheej galvanized muaj cov txheej txheem kho saum npoo. Cov txheej txheem galvanized yog ib hom kev tiv thaiv- xeb txheej txheej tsim los ntawm cov txheej txheem sib txawv ntawm electro{1}}galvanizing thiab kub-dip galvanizing. Cov txheej txheem nta: Thaum lub sij hawm tsim khoom ntawm chav tsev kub, los ntawm kev sib hloov ntawm lub plating lub tog raj kheej loaded nrog rau qhov chaw, qhov cuam tshuam nruab nrab ntawm lub tog raj kheej collides nrog rau qhov chaw los tsim mechanical impact force nrog kev sib hloov ntawm lub tog raj kheej, thiab zinc hmoov collides. thiab deposits ntawm qhov chaw ntawm qhov chaw, yog li tsim A txheej nrog cov yam ntxwv ntawm lub cev ntawm cov hlau zinc. Cov yam ntxwv txheej txheem: Cov txheej txheem galvanizing ntawm cov txheej txheem galvanizing tsis ua rau hydrogen embrittlement txaus ntshai rau siab - lub zog steel. Cov txheej txheem tsis xws luag: muaj inhomogeneity nyob rau hauv thickness ntawm zinc txheej; zinc txheej tsis zoo li du thiab ci li cov txheej electroplated. Kub dip galvanized screws
Plaub, kub dip galvanizing
Kub-dip galvanizing, feem ntau hu ua kub-dip galvanizing, yog txheej txheem ua ntej-kho steel qhov chaw raug muab tso rau hauv zinc molten los ua zinc thiab/los yog zinc{{ 3}} hlau alloy coatings rau ntawm lawv qhov chaw kom tau ib tug hlau txheej. txheej txheem thiab txheej txheem. Nws muaj ntau yam kev siv, xws li kub-dip galvanized txoj kev loj tsheb teeb meem (kev loj corrugated beam steel guardrail fastener txuas khub), kub-dip galvanized fasteners thiab lwm yam fasteners uas yog dav siv nyob rau hauv pipelines thiab fais fab kis, thiab lwm yam.. Kev pabcuam lub neej ntawm kub -dip galvanizing tsis yog tsuas yog cuam tshuam nrog cov txheej txheem nws tus kheej, tab sis kuj muaj kev sib raug zoo nrog cov adhesion ntawm txheej galvanized. Qhov kub-dip galvanized txheej muaj kev tiv thaiv zoo thiab muaj peev xwm tiv thaiv, thiab muaj peev xwm tiv taus atmospheric corrosion zoo dua li ntawm electro-galvanized.