Nws yuav tsum muab ob daim hlau tsis muaj hlau rau hauv ib lub tank.
Rau ob txoj kev welding, muaj ntau cov kev xav. Qee cov neeg xav tias cov nyhuv ntawm cov vuam vov ib nrab yog ua tau zoo tshaj ob npaug vuam voog. Qee cov khoom siv ob npaug vuam voog yog vim cov phab ntsa yog loj heev, thiab ib qho vuam vov tsis yooj yim siv. Ob vuam voog, qee cov neeg xav tias ob npaug vuam welding yog zuj zus tshaj li ib nrab vuam voog, ib leeg vuam voog tsis muaj zog li ob npaug vuam welding, zoo nkauj
1. Tus rhuav tshem ntawm ib qho vuam vov ib qho loj dua qhov uas muaj ob lub voj voog.
2. Ib qho vuam luaj xwb, cov tsos ntawm qhov backside weld tsis muaj peev xwm tswj tau, thiab ob lub voj voog feem ntau tau muaj cov hauv paus hauv qab ntawm lub hauv paus, uas yuav tswj tau qhov kev sib txuas zoo.
3. Qhov nruab nrab txheej ntawm cov phaj tuab yog coarser thiab lub zog yog me ntsis qis tshaj qhov ntawm lub phaj. Thaum sab nraub qaum ntawm kev sib txuas ob lub vuam velded, sab pem hauv ntej yog nqaij npuaj taws uas muaj qhov sib txawv, uas yuav zoo dua ua kom zoo dua cov hlau ntawm lub pob blunt ntug. Nws tseem tso tawm ib feem ntawm txoj kev txhawj xeeb ntawm cov hlua khi
4. Kev siv ob npaug ntawm cov khoom sib dhos rau cov slabs yog thawj zaug thiab pheej yig dua ntawm cov nyiaj khaws tseg rau cov kev sib tw ib leeg. Qhov thib ob, qhov zoo li ntawm qhov txhaws dej ncaj qha cuam tshuam rau txoj kev ntxhov siab ntawm qhov kev sib tshuam.