Kev daws teeb meem rau porosity discurks

Txhawm rau kom zoo dua qhov chaw nres nkoj zoo nkauj hauv kev muab cov kab ke sib txawv, nws yog qhov tsim nyog tshem tawm cov weldosity tsim kev cuam tshuam xws li noo noo thiab xeb ntawm kev tsim npuas. Los ntawm cov neeg vuam welding, nws tseem tsim nyog yuav tsum ua kom muaj kev kho kom haum rau lub vuam tam sim no thiab hais tias lub vuam tam sim no thiab hais tias lub vuam tam sim no, yog li txo qhov tshwm sim ntawm porge qhov tsis xws luag. Tsis tas li ntawd, ib qho kev tshuaj xyuas vuam yuav tsum tau ua thoob plaws tag nrho cov txheej txheem. Pib los ntawm kev tuaj txog ntawm cov khoom raw, tsim nyog cia thiab cov tshuaj tiv thaiv yuav tsum tau ua. Cov hau kev cia yuav tsum tau saws raws li cov yam ntxwv ntawm cov phiaj hlau yog khaws cia hauv ib qho chaw zoo, yog li tiv thaiv xeb thiab lwm yam tshwm sim. Cov phiaj hlau txheej txheem yuav tsum tau ua tib zoo soj ntsuam, tshwj xeeb tshaj yog cov chaw vuam uas yuav tsum tau tshuaj ntsuam ntau dua. Los ntawm kev tshuaj xyuas, muaj peev xwm txheeb tau cov teeb meem tuaj yeem txheeb tau thiab sai sai los txhim kho kev huv ntawm cov chaw vuam ntawm qhov tshwm sim ntawm qhov tsis zoo.