1.Dab tsi yog cov kauj ruam hauv kev ua cov txheej txheem?
Cov txheej txheem feem ntau muaj peb kauj ruam: kev kho saum npoo → xaiv cov khoom tsim nyog → daim ntawv thov txheej.
2.Yuav ua li cas kho nto?
Ua kom huv si weld slag thiab spatter: Siv cov cuab yeej xws li slag rauj thiab hlau txhuam kom tshem tawm tag nrho cov vuam seem.
Sib tsoo thaj tsam weld:
Lub hom phiaj: Txhawm rau tshem tawm cov cua sov- thaj tsam cuam tshuam (feem ntau oxidized, discolored, los yog zinc puas) thiab tag nrho cov xeb los ntawm ob sab ntawm lub vuam.
Cov cuab yeej: Lub kaum sab xis grinder.
Txoj kev:
Siv lub khob- zoo li tus xaim txhuam los ntxuav qhov chaw tiaj tus thiab weld hlaws nto.
Siv lub log sib tsoo los yog louvered hniav rau kev sib tsoo ntau dua kom txog rau thaum cov hlau tsis sib xws, ci ntsa iab, thiab cov khoom hlau raug nthuav tawm.
Scope: Qhov chaw sib tsoo yuav tsum txuas ntxiv 50-100 mm rau txhua sab ntawm lub vuam, kom ntseeg tau tias tag nrho cov zinc puas raug tshem tawm.
Ntxuav qhov chaw: Tshem cov plua plav tawm nrog cua compressed, tom qab ntawd so nrog lub tshuab ntxhua khaub ncaws tshwj xeeb (xws li acetone lossis xylene) lossis cov roj-dawb daim ntaub kom tshem tawm cov roj, cov ntiv tes, thiab cov dej noo, kom lub ntsej muag huv si thiab qhuav.
3.Yuav ua li cas xaiv corrosion-cov ntaub ntawv tiv taus?
Zinc- cov txheej txheem nplua nuj (cov txheej txheem ntau tshaj plaws thiab pom zoo) yog qhov kev xaiv zoo tshaj plaws rau kev kho cov txheej txheem galvanized vim lawv muab kev tiv thaiv cathodic zoo ib yam li cov txheej txheem galvanized qub.
Lub hauv paus ntsiab lus ua haujlwm: Cov txheej txheem muaj ntau cov zinc hmoov (feem ntau tshaj 80% zinc hmoov hauv zaj duab xis qhuav). Nyob rau hauv lub xub ntiag ntawm ib tug electrolyte (xws li dej los nag los yog ya raws), zinc ua raws li cov anode thiab corrodes nyiam tshaj hlau, yog li tiv thaiv cov hlau substrate.
Txias-dip galvanizing txheej / galvanizing kho tus neeg saib xyuas
Cov khoom no tuaj yeem suav hais tias yooj yim-rau- siv "kua zinc," thiab lawv cov khoom tseem ceeb yog siab -purity zinc hmoov.
Nta: Ib qho yooj yim rau kev thov, zoo li cov xim zoo tib yam los ntawm kev txhuam los yog txau, ua cov txheej txheej nrog cov muaj pes tsawg leeg zoo ib yam li kub -dip galvanized txheej. Nws yog tshwj xeeb tsim los kho cov txheej txheem galvanized.
Txhawb nqa System (Rau qhov hnyav hnyav)
Rau qhov hnyav ib puag ncig zoo li cov txuas hniav, uas tau raug cov dej tsis tu ncua, kev tso dej, thiab UV hluav taws xob, cov txheej txheem ua tiav yog pom zoo:
Primer: Epoxy zinc-nplua nuj primer lossis txias-dip galvanizing txheej. Muab kev tiv thaiv cathodic thiab kev tiv thaiv corrosion yooj yim.
Intermediate Coat: Epoxy micaceous hlau oxide intermediate tsho. Ua kom zoo dua txheej txheej, tiv thaiv kev ya raws thiab corrosive media, thiab txhim kho kev tiv thaiv corrosion tag nrho.
Topcoat: Polyurethane topcoat los yog fluorocarbon topcoat. Muab cov huab cua tiv thaiv zoo heev, tiv thaiv UV, thiab ua kom puas, thaum tseem muab cov xim zoo nkauj.
4.Dab tsi yog cov kauj ruam hauv kev pleev xim?
Txheej Txheej: Txhuam, cov menyuam, lossis tsis muaj cua tshuab tuaj yeem siv tau. Rau qhov chaw weld, txhuam kom zoo dua cov xim nkag mus rau txhua lub ces kaum.
Txheej Txheej: Cov txheej yuav tsum tsis yog tsuas yog npog thaj tsam sanded weld tab sis kuj txuas ntxiv 25-50 mm rau hauv ib puag ncig zoo galvanized txheej los xyuas kom muaj kev sib tshooj zoo ntawm cov txheej qub thiab tshiab.
Txheej Thickness:
Yog tias siv cov zinc nkaus xwb- cov xim nplua nuj, cov yeeb yaj kiab qhuav yuav tsum yog tsawg kawg 70-100 microns.
Yog tias siv cov txheej txheem ua tiav, tag nrho cov yeeb yaj kiab qhuav yuav tsum tau txiav txim siab raws li kev tsim qauv, feem ntau 200-300 microns lossis siab dua.
Qhuav thiab Curing: Ua raws li cov khoom qhia nruj me ntsis kom paub meej txaus kom qhuav thiab kho lub sij hawm, tshwj xeeb tshaj yog rau cov epoxy txheej, uas kho tau qeeb dua nyob rau hauv qis - kub, siab - cov av noo ib puag ncig.
5.Qhov kev coj ua zoo tshaj yog dab tsi?
Kev Npaj Nto: Siv lub kaum sab xis grinder nrog cov hniav louvered los yog hlau txhuam kom huv si zom cov vuam seam thiab ob sab kom txog thaum lub hlau nplaum raug nthuav tawm thiab qhov chaw huv si.
Primer: Siv 1-2 lub tsho tiv no ntawm epoxy zinc-nplua nuj primer kom ntseeg tau tias cov yeeb yaj kiab qhuav tuab ua tau raws li qhov yuav tsum tau ua.
Intermediate Coat: Siv 1 lub tsho tiv no ntawm epoxy micaceous hlau oxide nruab nrab lub tsho kom nce txheej tuab thiab tiv thaiv cov khoom.
Topcoat: Siv 1-2 lub tsho tiv no ntawm aliphatic polyurethane topcoat los muab cov huab cua zoo heev thiab kev puas tsuaj.