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 ° C, thiab lub boiling point yog hais txog 908 ° C. Thaum lub sij hawm welding, zinc melted rau hauv cov kua floating nyob rau saum npoo ntawm lub tank molten los yog nyob rau hauv lub hauv paus ntawm weld. Zinc muaj cov tshuaj loj loj hauv cov hlau. Zinc kua yuav sib sib zog nqus cov hlau welded raws li tus ciam teb siv lead ua, thiab qis melting point zinc ua "kua hlau crisp".
Nyob rau tib lub sijhawm, zinc thiab hlau tuaj yeem tsim cov hlau crispy compound. Cov theem brittleness no txo cov plasticity ntawm cov hlau welded thiab tawg nyob rau hauv tensile kev nyuaj siab.
Yog hais tias lub kaum sab xis vuam, tshwj xeeb tshaj yog lub kaum vuam ntawm T-shaped sib koom ua ke, feem ntau yuav tsim 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 volatilization ntawm cov pa luam yeeb dawb thiab chav, uas yuav yooj yim ua rau welded cua qhov. .
Lub ZNO tsim los ntawm oxidation muaj lub siab melting point, txog 1800 degree C. Yog hais tias qhov tsis muaj me me thaum lub sij hawm vuam txheej txheem, ZnO residue yuav tshwm sim, thiab nyob rau tib lub sij hawm. Txij li Zn dhau los ua tus deoxyer. Tsim Feo-Mno lossis Feo-Mno-SIO2 qis melting point oxide slag. Qhov thib ob, vim yog cov evaporation ntawm zinc, ntau cov pa luam yeeb dawb thiab cov plua plav evaporate muaj qhov cuam tshuam thiab kev puas tsuaj rau tib neeg lub cev. Yog li ntawd, txheej galvanized ntawm qhov chaw vuam yuav tsum tau polished.
