Lub resistivity ntawm vuam tshuab yog qhov tseem ceeb kev ua tau ntawm cov khoom uas yuav tsum tau welded. Feem ntau, thaum lub workpiece thiab electrode tsau, qhov tsis kam ntawm qhov chaw ua haujlwm yog nyob rau hauv qhov tsis zoo ntawm cov khoom siv hlau nrog lub zog siab, thaum cov khoom siv hlau nrog tsawg resistivity muaj conductivity zoo.
Cov qub yog zoo li steel hlau, tom kawg zoo li txhuas txhuas. Yog li ntawd, nws yog qhov yooj yim los tsim cov cua sov thiab tsis yooj yim rau dissipate tshav kub thaum pom cov hlau tsis xeb hlau, thiab nws tuaj yeem siv hluav taws xob me me. Thaum pom welding aluminium alloy, lub sijhawm vuam yuav coj kos npe ntawm kev ua kom muaj teeb meem kub thiab yooj yim kub tsis taus. Lub sijhawm no, lub tshuab hluav taws xob loj yuav raug siv.
Qhov tseeb, nws tsis yog tsuas yog muaj ntau yam ntawm cov ntaub ntawv hlau uas cuam tshuam rau kev tsis kam, tab sis kuj tsim kho cov cua sov hauv lub xeev, kev ua cov txheej txheem thiab qhov kub thiab txias ntawm cov ntaub ntawv hlau.
