(1) Thaum aluminium ntxiv rau molten zinc, nws reacts nrog oxygen nyob rau hauv cov huab cua los ua txhuas oxide. Kev ntsuam xyuas tau pom tias zinc tshauv ntawm qhov nkag uas cov kav hlau nkag mus rau cov zinc molten muaj li ntawm 15.2% txhuas oxide. Aluminium oxide muaj qhov melting point ntawm 2050 degree thiab qhov ntom ntom tsuas yog 3. /L. Qhov ceev ntawm molten zinc ntawm qhov kub ntawm kev khiav hauj lwm ntawm 480-510 degree yog 6.54-6.79 kg/L. Nws yog pov thawj tias aluminium oxide, nrog qhov qis tshaj plaws, ib txwm ntab saum toj. Thaum cov yeeb nkab steel coated nrog flux tsis qhuav los yog tau raug huab cua ntev ntev tom qab ziab, cov flux yuav rov ua dua. Thaum cov yeeb nkab steel nkag mus rau hauv cov zinc molten, lawv thawj zaug sib cuag nrog txhuas oxide thiab tom qab ntawd nrog zinc oxide (zinc tshauv). Cov tshuaj no adheres rau saum npoo ntawm cov kav dej steel, hlawv tawm cov flux thiab ua rau cov chaw tsis muaj coated.
(2) thaum pib pib thiab rov tsim dua, vim lub sijhawm ntev ua ntej, txhuas nrog cov ceev ceev qeeb qeeb rau saum npoo ntawm Molten zinc. Thaum cov kav dej hlau coated nrog flux nkag mus rau nws, cov tshuaj tiv thaiv hauv qab no tshwm sim tam sim:
2al {{+ 3 ZNCL₂ → 2Alcl₃ {3}} Zn
Los ntawm kab zauv, nws yog qhov tseeb tias cov ntau reastre aluminium tam sim ntawd hloov zinc hauv cov tshuaj txhuas flux, alcl₃), uas sublimates ntawm 178 degree. Ib yam li ntawd, aluminium reacts nrog ammonium chloride hauv flux los tsim cov kev sib txuas ntawm Alclayates Alcloratates, uas npau thiab evaporates ib ncig 400 degree. Yog li, cov kev tawm tsam no tau ua rau tiav cov tshuaj lis haujlwm tag nrho, uas pab pab hauv Galvanizing, ua rau tsis muaj qhov tsis sib luag.
(3) Thaum kev tsim khoom pib, qhov ntsuas kub ntawm Molten Zinc feem ntau dua. Tom qab flux tuaj ntsib Molten zinc, nws tsis muaj sijhawm txaus los ua kom tiav nws cov txheej txheem tshuaj tiv thaiv, thiab ua kev sib xyaw ua ke, ua rau muaj kev sib xyaw ua ke. Qhov no ua rau uncoated me ntsis.
(4) Thaum cov yeeb nkab steel coated nrog flux yog immersed nyob rau hauv molten zinc rau galvanizing, cov cuab yeej xws li pliers thiab turntables yog siv los yuam lawv mus rau hauv molten zinc. Cov cuab yeej no tuaj yeem ua kom puas cov yeeb yaj kiab flux ntawm cov kav dej steel kom sib txawv ntawm cov ntsiab lus ntawm kev sib cuag. Yog li ntawd, thaum nyob rau hauv kev sib cuag nrog molten zinc, qhov chaw no poob nws lub peev xwm galvanizing, uas ua rau uncoated me ntsis.
(5) Thaum cov khoom pib ua ntej mus txog qhov txheej txheem kub, cov tshuaj tiv thaiv ntawm cov hlau thiab zinc yog qhov qeeb vim qhov kub ntawm cov zinc molten, qhov tsis muaj lub sij hawm ntev immersion, thiab cov concentration ntawm txhuas ntawm qhov chaw. Ib txheej hlau-zinc alloy tsis tuaj yeem tsim nyob rau lub sijhawm luv luv. Yog li ntawd, ib zaug tshem tawm, qhov chaw tsis muaj coated yuav pom ntawm cov kav hlau.
(6) Yog tias muaj ntau tshaj txhuas nyob rau hauv lub lauj kaub galvanizing thiab qhov kub ntawm cov zinc molten tsis ruaj khov, ntau cov khoom ntawm Fe-Al-Zn tebchaw yuav raug tshem tawm hauv cov zinc molten. Thaum cov yeeb nkab steel dhau los, cov khoom siv no ua raws li cov kav dej steel, ua rau qhov chaw roughness defects.
Kev daws teeb meem:
(1) Thaum pib tsim khoom, cov ntsiab lus txhuas hauv cov zinc molten yuav tsum qis dua li thaum lub sijhawm tsim khoom. Raws li kev tsim khoom normalizes, maj mam nce nws mus rau qib txheej txheem teev tseg.
(2) Nquag txhuam cov zinc tshauv los ntawm qhov chaw ntawm cov zinc molten ntawm cov yeeb nkab steel nkag.
(3) Cov kua dej siv rau cov kav hlau yuav tsum qhuav thiab tsis muaj dej los yog qhuav tsis tiav.
(4) Qhov ntsuas kub ntawm Molten zinc hauv cov lauj kaub galvaning yuav tsum tsis txhob siab dhau lossis qis dhau.
(5) Tsis txhob khawb cov flux coated ntawm cov kav hlau thaum thauj.
(6) Cov kav hlau hlau yuav tsum tau muab tso rau hauv cov zinc molten ntawm lub kaum ntse ntse kom txo qis dov rau saum npoo ntawm zinc molten.
