Siv tau qhov cua
Cov txheej txheem vuam ua rau muaj cov pa luam yeeb ntau thiab cov pa roj teeb, yog li qhov cua zoo yog qhov tseem ceeb los tiv thaiv kev pheej hmoo mob rau cov neeg ua haujlwm.
Pre -} vuam npaj
Ua ntej vuam muag, cov yeeb nkab tau welded yuav tsum tau welded thiab preheated los tiv thaiv cov khib nyiab, roj, thiab lwm yam paug, thiab lwm yam paug, thiab lwm yam paug, thiab lwm yam paug,
Post -} vuam kho
Tom qab vuam, Weld leeg yuav tsum tau muab ntxuav thiab kho kom tiv thaiv ib qho kev cuam tshuam rau kev ua haujlwm ntawm cov yeeb nkab.
Vuam zoo soj ntsuam
Thaum lub sij hawm vuam ua haujlwm, Weld kev tsim nyog yuav tsum tau raug saib xyuas kom ntseeg tau tias nws ua tau raws li kev cai tswjfwm.
