Xov xwm

Txoj cai tiam ntawm kub-dip galvanized txheej
Kub dip galvanizing yog txheej txheem ntawm metallurgical tshuaj tiv thaiv. Los ntawm qhov kev xav ntawm microscopic, cov txheej txheem ntawm kub-dip galvanizing muaj ob qhov sib npaug sib npaug: thermal equilibrium thiab zinc hlau pauv equilibrium. Thaum steel qhov chaw yog immersed nyob rau hauv molten zinc nyob ib ncig ntawm 450 ℃, cov hlau qhov chaw nyob rau hauv chav tsev kub absorbs tshav kub ntawm zinc kua. Thaum qhov kub siab tshaj 200 ℃, kev sib cuam tshuam ntawm zinc thiab hlau maj mam pom meej, thiab zinc infiltrates txheej txheej ntawm cov hlau hlau.

Raws li qhov ntsuas kub ntawm cov hlau maj mam nce mus txog qhov kub ntawm cov kua zinc, cov txheej txheej hlau sib txawv nrog cov zinc hlau sib txawv yog tsim rau ntawm txheej txheej ntawm cov hlau, tsim cov txheej txheej txheej ntawm zinc txheej. Raws li lub sij hawm mus, sib txawv alloy txheej nyob rau hauv lub txheej qhia txawv kev loj hlob. Los ntawm kev xav macro, cov txheej txheem saum toj no tshwm sim raws li cov khoom siv hlau tau muab tso rau hauv cov kua zinc, ua rau kub kub ntawm zinc kua nto. Raws li zinc hlau tshuaj tiv thaiv maj mam sib npaug, zinc kua nto maj mam calms.
Thaum cov hlau thooj tau nce mus rau qib zinc kua, thiab qhov kub ntawm cov khoom steel maj mam txo qis rau hauv qab 200 ℃, zinc hlau tshuaj tshuaj tiv thaiv nres, thiab kub-dip galvanized txheej yog tsim, nrog lub thickness txiav txim.
Thickness xav tau rau kub-dip galvanized txheej
Lub ntsiab yam tseem ceeb cuam tshuam rau lub thickness ntawm zinc txheej muaj xws li: substrate hlau muaj pes tsawg leeg, nto roughness ntawm hlau, cov ntsiab lus thiab kev faib ntawm active yam silicon thiab phosphorus nyob rau hauv steel, nyob rau hauv kev nyuaj siab ntawm steel, geometric qhov ntev ntawm steel qhov chaw, thiab kub-dip galvanizing txheej txheem.
Tam sim no thoob ntiaj teb thiab Suav kub-dip galvanizing qauv muab faib ua ntu raws li cov thickness ntawm cov hlau. Lub ntiaj teb thiab hauv zos thickness ntawm zinc txheej yuav tsum ncav cuag cov tuab tuab los txiav txim siab corrosion kuj ntawm zinc txheej. Lub sij hawm yuav tsum tau ua kom tiav thermal sib npaug thiab ruaj khov zinc hlau pauv sib npaug sib txawv rau cov hlau qhov sib txawv, uas ua rau cov txheej txheem sib txawv. Qhov nruab nrab txheej txheej thickness nyob rau hauv tus txheej txheem yog raws li nyob rau hauv industrial ntau lawm kev tsim nqi ntawm kub-dip galvanizing txoj cai hais los saum toj no, thiab lub zos thickness yog cov kev paub tus nqi yuav tsum tau xav txog qhov tsis sib xws ntawm zinc txheej thickness thiab cov yuav tsum tau rau txheej corrosion kuj. .

Yog li ntawd, cov qauv ISO, American ASTM cov qauv, Japanese JIS cov qauv, thiab Suav cov qauv muaj qhov sib txawv me ntsis rau zinc txheej thickness, thiab qhov sib txawv tsis tseem ceeb.
Cov nyhuv thiab cuam tshuam ntawm kub-dip galvanized txheej thickness
Lub thickness ntawm kub-dip galvanized txheej txiav txim siab corrosion kuj ntawm plated qhov chaw. Yog xav paub ntxiv txog kev sib tham, thov mus saib cov ntaub ntawv ntsig txog los ntawm American Hot Dip Galvanization Association hauv daim ntawv txuas. Cov neeg siv khoom tuaj yeem xaiv cov zinc txheej tuab uas siab dua lossis qis dua tus qauv.
Nws yog qhov nyuaj kom tau txais cov txheej tuab hauv kev tsim khoom rau cov hlau nyias nyias nrog cov txheej txheej du ntawm 3 hli lossis tsawg dua. Tsis tas li ntawd, zinc txheej thickness uas tsis yog proportional rau steel thickness tuaj yeem cuam tshuam qhov adhesion ntawm txheej thiab substrate, nrog rau cov tsos zoo ntawm txheej. Cov txheej txheej tuab heev tuaj yeem ua rau lub ntsej muag ntawm cov txheej txheej yuav ntxhib, yooj yim rau tev, thiab cov phaj plated tsis tuaj yeem tiv thaiv kev sib tsoo thaum lub sijhawm thauj mus los thiab teeb tsa.
Yog tias muaj ntau yam khoom siv xws li silicon thiab phosphorus hauv cov hlau, nws tseem nyuaj heev kom tau txais cov txheej txheem thinner hauv kev tsim khoom. Qhov no yog vim hais tias cov ntsiab lus ntawm silicon nyob rau hauv steel cuam tshuam rau txoj kev loj hlob ntawm zinc hlau alloy txheej, uas yuav ua rau lub zeta theem zinc hlau alloy txheej loj hlob sai heev thiab thawb lub zeta theem mus rau lub nto txheej txheej, uas ua rau ib tug ntxhib thiab ntxhib los mos txheej. npub saum npoo ntawm txheej txheej, tsim ib qho grey tsaus txheej nrog tsis zoo adhesion.
Yog li ntawd, raws li tau hais los saum toj no, muaj qhov tsis paub tseeb ntawm kev loj hlob ntawm kub-dip galvanized txheej. Qhov tseeb, nws feem ntau nyuaj kom tau txais qee yam ntawm cov txheej tuab hauv kev tsim khoom, raws li tau teev tseg hauv cov qauv kub-dip galvanized.
Thickness yog ib qho txiaj ntsig ntawm qhov tshwm sim tom qab ntau qhov kev sim, suav nrog ntau yam thiab cov kev xav tau, thiab yog qhov kev tshawb fawb thiab tsim nyog.