Thaum lub sij hawm welding txheej txheem, lub kauv raj chaw tsim tshuaj paus overflows nws mus rau qhov tsis muaj rhuab niam khoom los yog welded seams, thiab coagulates rau hauv hlau hlav. Cov qog hlau no uas tuaj yeem tsis tuaj yeem nrog cov khoom siv los yog cov anterior weld yog hu ua vuam qog.
Qhov no tsis xws luag ua rau cov vuam seams tsis zoo nkauj, thiab qhov chaw uas vuam hlav yog welded feem ntau muaj asx residue thiab unprooped. Ntxiv nrog rau kev txo qis kev siv cov vuam hlav hauv lub raj, qhov zoo ntawm cov raj kuj raug txo.
Thaum lub sij hawm muab kauv raj welding, cov hlau qog tsim los ntawm cov hlau melting uas ntws mus rau cov khoom siv tsis zoo ntawm cov khoom siv sab nraum lub vuam yog hu ua cov qog vuam.
Lub vuam qog tsis tsuas yog cuam tshuam rau cov tsos ntawm vuam, tab sis kuj muaj qhov tsis xws luag xws li vuam permeability nyob rau hauv vuam hlav, uas tuaj yeem yooj yim ua rau muaj kev ntxhov siab. Nws yog qhov zoo dua los tsim cov qog hlav hauv cov kav dej thaum lub sijhawm vuam ntsug thiab kab rov tav vuam, uas yuav txo tau qhov chaw zoo hauv cov yeeb nkab thiab txawm tias ua rau cov kav dej thaiv.
Kev tshuaj xyuas ntawm qhov ua rau tsim ntawm kauv raj vuam qog:
1. Kev sib txuas ntawm txoj kab nqes, vuam lossis sib tshooj vuam. Yog tias qhov vuam tam sim no loj dhau, lub kaum sab xis ntawm lub voj voog tsis raug lossis kev ua haujlwm tsis zoo.
2. Qhov kub ntawm lub tank melting yog siab dhau lawm, thiab lub solidification yog qeeb, thiab lub vuam qog yog tsim nyob rau hauv lub zog ntawm cov dej hlau.
