Galvanized steel yog dav siv hauv kev lag luam tsheb thiab nws cov kua ntses zais cia yog nws qhov tshwj xeeb tiv thaiv corrosion. Qhov no ua rau kuv nco txog qhov kev sim nthuav: Hauv xyoo thaum ntxov, cov kws tshawb fawb tau muab cov hlau thiab zinc tso rau hauv dej ntsev yam tsis muaj cov xov hlau txuas ntawm lawv. Nws tau pom tias ob qho tib si hlau thiab zinc yuav xeb, nrog cov hlau ua xeb liab thiab zinc ua "dawb xeb". Txawm li cas los xij, thaum lub xaim txuas ntawm ob, hlau tsis xeb, thaum zinc tsim "dawb xeb." Nws zoo li zinc tiv thaiv hlau. Qhov zoo tshaj plaws no yog hu ua "sacrificial anode tiv thaiv."
Lub hauv paus ntsiab lus no tau siv cleverly rau cov khoom siv tiag tiag los tsimgalvanized steel ntawv. Tom qab kev tshawb fawb tob, nws tau pom tias thaum cov nyiaj galvanizing ncav cuag 350 g / m2 (ib sab), lub neej kev pab sab nraum zoov ntawm cov ntawv hlau galvanized (liab xeb) yog li ntawm 15 mus rau 18 xyoo nyob rau hauv cov cheeb tsam, thiab txog 15 xyoo. nyob rau hauv industrial cheeb tsam. 3a5 xya. Qhov no yog ntev npaum li cas ntawm cov hlau zoo tib yam, txawm tias ntev tshaj li kaum npaug.
Txij li thaum xyoo 1970s, galvanized nyias steel ntawv tau siv rau lub tsheb lub cev steel panels. Thaum lub sij hawm sib dhos, galvanized nto yog muab tso rau sab hauv lub tsheb los txhim kho corrosion kuj ntawm lub cev, thaum tsis-galvanized nto yog muab tso rau sab nraud ntawm lub tsheb thiab yuav tsum tau pleev xim rau. Raws li lub tsheb yuav tsum tau rau corrosion kuj tseem nce ntxiv, galvanized steel nplooj ntawv txuas ntxiv nce qhov hnyav ntawm txheej galvanized, thiab ob txheej txheej galvanized steel los xij kuj tshwm sim. Txawm li cas los xij, txij li qhov hnyav ntawm galvanizing yuav ua rau kom lub zog siv ntawm electro-galvanizing, uas ua rau muaj kev nce nqi ntawm cov khoom siv, thaum xyoo 1970s, cov ntawv hlau galvanized uas siv cov txheej txheem kub-dip galvanizing tshwm sim, hu ua kub-dip. galvanizing. hlau phaj.
Qhov no hom ntawm galvanized steel ntawv txais cov txheej txheem kub-dip galvanizing:txias dov daim ntawv→ cua sov → txias rau galvanizing kub → galvanizing → txias → straightening. Yuav kom ua tau raws li ntau yam kev xav tau ntawm tsheb rau galvanized steel los xij, qee cov tuam txhab ua cov kev kho tshwj xeeb xws li diffusion annealing ntawm galvanized steel los xij ntawm galvanizing ntau lawm kab los tsim "zinc-hlau" alloy txheej ntawm cov ntawv hlau. Nws cov yam ntxwv yog tias nws cov weldability thiab corrosion kuj tom qab pleev xim zoo dua li cov ntshiab zinc plated panels. Txij thaum ntawd los, alloyed kub-dip galvanized steel los xij xws li "zinc-aluminium-silicon" thiab "zinc-aluminium-rhenium" tau tshwm sim, uas tau ua ob npaug ntawm kev tiv thaiv corrosion ntawm kub-dip galvanized steel los xij thiab lawv cov kev sib txuas mus ntev. nrog xim. Ua kom ruaj khov.
Tam sim no,galvanized steel ntawvtau dav siv nyob rau hauv tsheb, nrog thicknesses li ntawm {{0}}.5 mus rau 3.0 hli. Ntawm lawv, lub cev npog feem ntau siv galvanized steel daim hlau nrog lub thickness ntawm 0.6 mus rau 0.8 hli. Feem ntau ntawm lub cev ntawm Audi tsheb nyob rau hauv lub teb chaws Yelemees yog ua los ntawm galvanized steel los xij (qee yam yog ua los ntawm aluminium alloy los xij); thaum ntau dua 80% ntawm cov ntawv hlau siv hauv Buick tsheb hauv Tebchaws Meskas yog ob sab kub-dip galvanized steel ntawv. Sab nrauv ntawm Shanghai Passat lub cev txais cov txheej txheem electro-galvanizing, thaum lub npog sab hauv siv cov txheej txheem kub-dip galvanizing, uas ua rau lub cev tiv thaiv corrosion lub neej ntev li 11 xyoo. Cov tsheb no siv cov ntawv galvanized steel los ua cov khoom siv hauv lub cev, uas tsis tsuas yog txhim kho lub zog ntawm lub cev, tab sis kuj muab cov neeg caij tsheb nrog kev nyab xeeb ntawm kev caij tsheb.
