Galvanized steel kav, uas muaj ob qhov zoo ntawm kev tiv thaiv corrosion thiab kev pab cuam lub neej ntev, thiab tus nqi qis, yog li tam sim no nws cov nqi siv tau nce siab dua, tab sis qee cov neeg siv tsis xyuam xim thaum vuam galvanized kav, uas ua rau nws, uas ua rau nws, uas ua rau nws, uas ua rau nws, uas ua rau nws, uas ua rau nws.Ib txhia qhov teeb meem tsis tsim nyog, yog li dab tsi yuav tsum tau them nyiaj mloog thaum vuam?
1. Lub hauv paus yog polished
Galvanize qhov vuam ntawm qhov vuam ntawm qhov vuam, txwv tsis pub nws yuav ua npuas, trachoma, vuam vuam, thiab lwm yam.Nws tseem yuav ua rau cov welds crispy thiab nruj.
2. Welding yam ntxwv ntawm galvanized hlau
Galvanized steel feem ntau muab tso nrog zinc ntawm cov pa roj carbon tsawg, thiab txheej txheej galvanized feem ntau yog 20um tuab.Lub melting point ntawm zinc yog 419 degree C, thiab lub boiling point yog txog 908 degree C.Thaum lub vuam, zinc melted rau hauv cov kua ntab. nyob rau saum npoo ntawm lub molten tank los yog nyob rau hauv lub hauv paus ntawm lub weld.Zinc muaj ib tug loj cov khoom tov nyob rau hauv cov hlau. Zinc kua yuav sib sib zog nqus etch hlau welded raws li siv lead ua ciam teb, thiab tsawg melting point zinc ua ib "kua hlau crisp". Tib lub sij hawm, zinc thiab hlau tuaj yeem tsim cov hlau crispy compound. Cov qib brittleness no txo cov plasticity ntawm cov hlau welded thiab cov kab nrib pleb nyob rau hauv tensile kev nyuaj siab.Yog hais tias lub vuam lub kaum sab xis vuam, tshwj xeeb tshaj yog cov ces kaum vuam ntawm lub T-zoo li tus sib koom, nws yog nquag nkag mus rau cov kab nrib pleb.
Thaum lub sij hawm welding ntawm galvanized steel, zinc txheej nyob rau saum npoo thiab cov npoo ntawm lub ramp yog nyob rau hauv qhov kev txiav txim ntawm arc thermal fever, uas ua rau oxidation, melting, evaporation thiab txawm volatilization ntawm dawb pa luam yeeb thiab chav, uas yuav yooj yim ua rau welded cua qhov. .Lub ZNO tsim los ntawm oxidation muaj ib tug siab melting point, hais txog 1800 degree C. Yog hais tias cov tsis me me thaum lub sij hawm vuam txheej txheem, ZnO residue yuav tshwm sim, thiab tib lub sij hawm.Vim Zn ua ib deoxyer.Generate Feo-Mno. los yog Feo-Mno-SIO2 low melting point oxide slag.Secondly, vim lub evaporation ntawm zinc, ib tug loj npaum li cas ntawm cov pa luam yeeb dawb thiab plua plav yog evaporated, uas muaj ib tug stimulating thiab kev puas tsuaj rau tib neeg lub cev. Yog li ntawd, txheej galvanized ntawm qhov chaw vuam yog polished.
3. vuam txheej txheem tswj
Kev npaj ua ntej-welding ntawm galvanized steel yog tib yam li cov hlau tsis tshua muaj-carbon. Nws yuav tsum tau muab sau tseg hais tias qhov luaj li cas ntawm txoj kab nqes thiab cov nyob ze galvanized txheej yuav tsum tau ua tib zoo tuav.Yuav ua li cas weld, qhov luaj li cas ntawm cov slopes yuav tsum tsim nyog, feem ntau 60 ~ 65 degree, thiab yuav tsum muaj ib tug tej qhov sib txawv, feem ntau 1.5. ~ 2.5 hli; Txhawm rau txo qhov nkag mus ntawm zinc rau welded seams, ua ntej weldingWelding tom qab txheej yog tshem tawm.
Hauv kev ua haujlwm tiag tiag, qhov nruab nrab ntawm qhov nruab nrab yog saws, thiab kev tswj hwm hauv nruab nrab ntawm cov txheej txheem blunt ntug tau txais, thiab ob txheej txheej vuam siv los txo qhov ua tsis tau zoo.Cov electrode yuav tsum raug xaiv raws li cov khoom siv ntawm cov khoom siv. galvanized rigid yeeb nkab. Feem ntau, cov hlau tsis tshua muaj carbon ntau yog siv J422 vim nws yooj yim-rau-ua haujlwm.
Vuam txoj kev: Thaum welding thawj txheej ntawm welded welding, zinc txheej yog melted thiab vaporized, evaporated thiab welds tuaj yeem txo qis, uas tuaj yeem txo cov kua zinc hauv cov vuam zoo heev.Thaum vuam welds welded, sim yaj cov zinc txheej. thiab vaporize, evaporate thiab reconcile cov welded seams ntawm thawj txheej.Tom qab melting, rov qab mus rau lub qub txoj hauj lwm thiab txuas mus rau welded rau pem hauv ntej.Thaum vuam thiab sawv welded, yog hais tias lub luv slag welding sawb xws li J427 yog siv, qhov tom yuav ua me me; Yog tias koj siv lub hauv ntej thiab sab nraub qaum -thiab -firing thev naus laus zis, koj tuaj yeem tau txais yam tsis muaj qhov tsis zoo vuam zoo.
