Qhov tsawg kawg nkaus txheej thickness yuav tsum tau nyob rau hauv ASTM A123 / A123M thiab ASTM A153 / A153M specifications tau tsim nyob rau lub sij hawm kom sib npaug cov kev xav tau rau corrosion tiv thaiv lub thickness uas ib tug galvanized txheej yuav ua tau raws li cov thickness thiab thickness ntawm cov chemistry. ntawm steel. Feem ntau, galvanizers tuaj yeem ua tau raws li cov txheej txheem txheej tsawg kawg nkaus; Txawm li cas los xij, muaj qee lub sij hawm uas nws nyuaj los yog tsis yooj yim sua kom ua tau raws li cov cai no.
Cov raj thiab cov hlau uas tau kho nrog txhuas (ntau dua li silicon) lossis muaj cov qib silicon tsawg heev yog cov hlau feem ntau yuav muaj teeb meem ua tau raws li qhov yuav tsum tau ua kom tsawg kawg nkaus txheej thicknesses, txawm hais tias lawv zoo li nyob rau hauv ntau yam ntawm steel chemistry pom zoo. los ntawm ASTM A385 tus qauv. Feem ntau, nws tseem muaj peev xwm ua tau raws li qhov tsawg kawg nkaus thickness yuav tsum tau, tab sis muaj qee lub sij hawm thaum, txawm tias tom qab tawm hauv cov hlau nyob rau hauv lub galvanizing kettle rau ntev ntev, nws tsis muaj peev xwm ua tau raws li qhov tsawg kawg nkaus thickness yuav tsum tau. Qhov no tso cov galvanizer rau hauv txoj haujlwm nyuaj, vim tias lawv yuav tsum ua kom tau raws li cov kev cai no raws li ASTM specifications.
Qhov tseem ceeb tshaj plaws galvanizers tuaj yeem ua tau yog qhia lawv cov neeg siv khoom ntawm cov txheej txheem kub dip galvanizing. Qhov no muaj tseeb tsis tsuas yog rau txheej thickness tsawg kawg nkaus, tab sis rau tag nrho cov facets ntawm cov txheej txheem galvanizing. AGA muaj ntau qhov chaw pub dawb los qhia nws cov neeg siv khoom. Lwm qhov chaw zoo los qhia koj cov neeg siv khoom yog ntawm daim ntawv tsocai thiab daim ntawv lees paub kev yuav khoom. Nyob rau hauv rooj plaub uas nws nyuaj heev kom ua tau raws li qhov tsawg kawg nkaus txheej thicknesses, sib tham txog steel chemistry thiab txheej txheej thicknesses tsawg kawg nkaus nyob rau hauv ob cov ntaub ntawv no yuav pab tau heev rau convincing koj cov neeg siv khoom uas koj tsis txhob sim dag lawv cov zinc txheej uas koj them rau. Ob qho tib si kuj yog qhov chaw zoo tshaj plaws los tham txog lwm txoj kev xaiv (thiab leej twg yuav tsum them rau cov kev pabcuam ntxiv no) thaum cov kev coj ua galvanizing ib txwm tsis tsim cov galvanized txheej tuab txaus kom tau raws li qhov xav tau ntawm ASTM yam tsawg kawg nkaus.
Txawm hais tias tsis tau lees paub, muaj ntau ntau cov txheej txheem galvanizers tuaj yeem ua haujlwm kom ua tiav cov txheej txheej tuab galvanized. Blasting steel ua ntej galvanizing roughens saum npoo ntawm cov hlau, uas ua rau kom tag nrho cov saum npoo ntawm cov hlau. Qhov chaw saum npoo no tau tso cai rau ntau qhov chaw rau zinc crystals kom loj hlob thaum lub sij hawm txheej txheem galvanizing thiab ua rau muaj feem ntau ntawm cov txheej txheem thicker. Lwm txoj hauv kev los cheb blasting uas tau siv qee zaum yog ntau dhau ntawm cov hlau hauv sulfuric acid (tus qauv no tsis ua haujlwm hauv hydrochloric pickling da dej). Kev xaiv ntau dhau ntawm cov hlau tso cai rau cov kua qaub tawm tsam ntawm cov hlau thiab roughen nws me ntsis, yog li ua rau thaj chaw saum npoo. Kev xaiv ntau dhau tuaj yeem ua rau muaj qhov tsis zoo, xws li roughening cov hlau los yog tsim cov rougher lossis tsis zoo saib galvanized txheej. Yog tias lub pickling ntev dhau lawm, cov sulfuric acid tuaj yeem rhuav tshem cov hlau los ntawm kev tawm tsam ntau dhau.
Thaum kawg, nws yog lub luag haujlwm ntawm cov galvanizers kom ua tau raws li cov txheej txheem thickness ntawm ASTM specifications, txawm tias nyob rau hauv cov ntaub ntawv uas cov chemistry ntawm cov hlau yog ib qho teeb meem uas cov galvanizer tsis muaj kev tswj. Tias yog vim li cas nws yog ib qho tseem ceeb uas yuav tsum tau qhia koj cov neeg siv khoom ua ntej, lossis tsawg kawg suav nrog cov kev cai hauv koj daim ntawv tsocai / kev yuav khoom daim ntawv lees paub rau tus neeg ua haujlwm them rau cov kev pabcuam ntxiv, xws li cheb steel, yog tias xav tau.
