1.Dab tsi yog qhov feem ntau siv thiab pom zoo shielding gas rau vuam galvanized coils?
Argon-nplua nuj roj sib tov, feem ntau Ar + (2-5)% O₂. Hauv qee kis, cov argon ntshiab (Ar) lossis Ar + CO₂ sib tov kuj siv.
2.Dab tsi yog qhov zoo thiab siv tau rau ib puag ncig ntawm argon + ib qho me me ntawm cov pa oxygen?
Qhov zoo:
Qhov tseem ceeb txo qhov porosity: Qhov no yog qhov txiaj ntsig tseem ceeb hauv kev tawm tsam zinc vapor.
Stable arc thiab kuj tsawg heev spatter.
Elegant weld tsos.
Cov txheej txheem siv tau: MAG welding (metal active gas welding), qhov kev xaiv nrov tshaj plaws rau vuam galvanized steel los xij.
3.Dab tsi yog cov qauv kev ua haujlwm thiab qhov zoo ntawm Argon + Carbon Dioxide (Ar + CO₂)?
Txoj Cai Ua Haujlwm:
Cov pa roj carbon dioxide (CO₂): Kuj tseem muaj cov pa roj reactive, CO₂ nce nkag mus, tab sis tsis tshua kim dua cov pa. Txawm li cas los xij, nws qhov arc tsis ruaj khov li ntawm Ar + O₂, thiab spatter yuav loj dua me ntsis.
Qhov zoo:
Tus nqi qis dua li siab -argon sib tov.
Zoo nkag mus.
4.Dab tsi yog qhov zoo, qhov tsis zoo thiab cov txheej txheem ntawm cov ntshiab argon?
Qhov zoo:
Welds yog huv heev nrog tsawg spatter.
Qhov tsis zoo:
Kev nkag mus tob thiab lub tswb -zoo li tus qauv arc, uas yuav ua rau nkag mus tsis tiav.
Tsis zoo weld pas dej fluidity tiv thaiv zinc vapor los ntawm kev khiav tawm, uas ua rau muaj kev pheej hmoo ntawm porosity.
Cov txheej txheem siv tau:
MIG welding (hlau inert gas welding) feem ntau yog siv rau vuam uas tsis yog -ferrous hlau xws li txhuas thiab tooj liab.
TIG welding (tungsten inert gas welding): Rau nyias galvanized ntawv hlau uas yuav tsum tau zoo heev weld zoo, TIG vuam nrog ntshiab argon yuav siv tau. TIG welding muab cov khoom siv hluav taws xob ntau dua thiab kev tswj xyuas zoo dua ntawm zinc vaporization, tab sis yuav tsum muaj kev txawj ua haujlwm siab thiab qeeb dua.
5.Dab tsi yog qhov kev ntsuas tseem ceeb ntawm cov roj?
Ua ntej-weld kev kho mob (qhov tseem ceeb tshaj!): Tshem cov zinc txheej ntawm qhov chaw vuam thiab nws qhov chaw nyob ze (kwv yees li 20-30 mm). Qhov no tuaj yeem ua tiav nrog lub kaum sab xis grinder, scraper, lossis pickling. Qhov no yog txoj hauv kev los txo cov zinc vapor ntawm qhov chaw.
Ua kom qhov sib txawv ntawm qhov sib txawv: Tsim nyog nce qhov sib dhos sib dhos kom muaj txoj hauv kev rau zinc vapor kom dim.
Optimize vuam parameters:
Tsim nyog txo tam sim no thiab qhov hluav taws xob: Qhov no txo cov cua sov nkag thiab ua rau cov zinc evaporation qeeb.
Ua kom vuam ceev: Qhov no txo cov arc lub sij hawm sib cuag ntawm ib cheeb tsam, cia zinc vapor sij hawm ntau dua kom dim ua ntej lub pas dej weld solidifies.
Siv luv luv - txoj kev vuam los yog mem tes welding: Qhov no yuav pab tswj cov cua kub tawm.
Txhim kho qhov cua: Vuam galvanized coils tsim cov pa taws uas muaj zinc oxide, uas ua rau muaj kev phom sij rau kev noj qab haus huv. Ib txwm ua haujlwm hauv qhov dej zoo - ib puag ncig qhov cua thiab hnav lub npog ntsej muag uas tsim nyog.