Zinc yog cov txheej txheem metallurgical cov tshuaj tiv thaiv.Los ntawm qhov pom ntawm microscopic, cov txheej txheem ntawm kub dip galvanizing yog ob qho tib si dynamic tshuav nyiaj li cas, sib npaug kub thiab zinc hlau sib npaug.Thaum cov hlau workpiece raus hauv txog 450℃molten zinc kua, chav tsev kub ua kua zinc nqus cua sov ntawm lub workpiece, ncav cuag tshaj 200℃, kev sib cuam tshuam ntawm zinc thiab hlau ua kom pom tseeb, zinc, hlau nkag mus rau saum npoo.Raws li qhov kub ntawm lub workpiece maj mam nce mus txog qhov kub ntawm zinc molten, workpiece nto tsim nrog sib txawv ntawm zinc hlau alloy txheej, ib tug hierarchical qauv ntawm zinc txheej, nrog rau ncua sij hawm, kev loj hlob ntawm txawv alloy plating txheej tam sim no sib txawv ceev tus nqi.Los ntawm kev pom macro, qhov ua tau zoo ntawm cov txheej txheem saum toj no workpiece raus hauv cov kua zinc, zinc kua boiling tshwm sim thaum zinc, hlau cov tshuaj tiv thaiv maj mam sib npaug, zinc nto maj mam calmed.Workpiece yog uauantawm zinc nto, lub workpiece kub yog maj mam txo mus rau hauv qab 200℃, cov tshuaj tiv thaiv tau nres los ntawm zinc, hlau, kub dip galvanized txheej muaj ib tug tuab txiav txim.
Lub thickness ntawm zinc txheej lub ntsiab yam tseem ceeb: lub hauv paus hlau tivthaiv, lub nto roughness ntawm cov hlau, cov hlau ntawm lub active yam silicon thiab phosphorus cov ntsiab lus thiab tis, lub internal kev nyuaj siab ntawm cov hlau, lub workpiece geometry, kub-dip galvanizing txheej txheem .Cov txheej txheem thoob ntiaj teb tam sim no thiab Suav tau muab faib ua ntu raws li cov hlau tuab, tuab ntawm zinc txheej thickness thiab kos lub zos yuav tsum ncav cuag cov tuab tuab, los txiav txim siab zinc txheej anticorrosion kev ua tau zoo.Txawv steel thickness ntawm lub workpiece, kom ua tiav thermal equilibrium, thiab zinc ion pauv sib npaug ntawm lub sijhawm sib txawv, qhov tshwm sim txheej thickness txawv.Qhov nruab nrab thickness ntawm txheej txheej txheem yog raws li lub mechanism ntawm galvanizing kev nyob rau hauv industrial ntau lawm, lub zos thickness ntawm zinc txheej thickness yog coj mus rau hauv tus account lub uneven tis ntawm txheej thiab corrosion tiv thaiv yuav tsum tau kev paub.Yog li, ISO qauv, ASTM qauv, JIS cov qauv thiab Suav cov qauv zinc txheej thickness yuav tsum tau sib txawv me ntsis, ntau yam zoo ib yam.
Lub thickness ntawm zinc txheej txiav txim siab qhov ua tau zoo ntawm anticorrosion plating qhov chaw.Rau 3 hli hauv qab ntawm cov hlau phaj nyias yog du, nws yog ib qho nyuaj rau kom tau ib tug tuab txheej nyob rau hauv industrial ntau lawm, ntxiv rau, nws tsis yog commensurate nrog lub thickness ntawm cov hlau zinc plating thickness thiab yuav cuam tshuam lub adhesion lub zog ntawm txheej thiab. lub substrate thiab txheej zoo li zoo.Cov txheej tuab yuav ua rau cov txheej txheej zoo li ntxhib, yooj yim tev, plating qhov chaw tsis tuaj yeem sawv qhov kev sib tsoo hauv cov txheej txheem ntawm kev tuav thiab kev teeb tsa.Yog tias muaj ntau cov hlau ua haujlwm ntawm silicon thiab phosphorus, kev tsim khoom lag luam tau nyuaj heev thinner txheej, uas yog cov ntsiab lus silicon ntawm cov hlau hauv kev cuam tshuam ntawm zinc-hlau alloy txheej kev loj hlob hom.
Post lub sij hawm: Sep-10-2019