Tam sim no, qee qhov teeb meem tsis xws luag tseem yuav ntsib thaum tsim cov kav dej welded. Ib qho ntawm ntau qhov tsis xws luag yog tawg. Ntxiv mus, qhov cuam tshuam ntawm qhov tsis xws luag ntawm qhov zoo ntawm cov yeeb nkab welded kuj tseem ceeb heev. Feem ntau, nws tuaj yeem muab faib ua cov kab nrib pleb thiab cov kab nrib pleb ntev raws li cov duab ntawm qhov tawg. Tom ntej no, peb yuav qhia txog cov kab nrib pleb.
Kab rov tav kab nrib pleb ntawm welded yeeb nkab feem ntau tshwm nyob rau hauv cov txheej txheem ntawm coagulation muaju ntawm welded seams. Qhov no yog vim muaj kev ntxhov siab ntawm vuam coagulation thiab contraction, yog li nyob rau hauv qhov kev txiav txim ntawm qhov tensile quab yuam, yuav muaj qee qhov kev tawg.
Kuj tseem muaj cov ntsiab lus metallurgical ntawm kauv vuam steel kav. Thaum lub sij hawm vuam txheej txheem, tsawg melting point impurities nkag, xws li tooj liab thiab tooj liab alloy. Cov peev txheej ntawm tooj liab feem ntau yog plated rau ntawm qhov chaw ntawm vuam hlau kom tiv thaiv tooj liab los ntawm xeb hlau. Cov tooj liab crumbs nkag mus rau tus neeg sawv cev welded los ntawm lub qhov hauv lub qhov ncauj ntawm lub qhov ncauj, thiab cov welding melt tank raug rau lub vuam tank thaum lub sij hawm vuam txheej txheem.
