Ua ntej vuam, xyuas kom meej tias cov khoom siv raw ntawm cov yeeb nkab steel thiab cov khoom siv vuam xws li vuam rods, vuam hlau, thiab flux ua tau raws li API 5L Gr.B cov qauv, xyuas lawv cov ntaub ntawv pov thawj zoo thiab zoo li qub, thiab tiv thaiv cov khoom tsis xws luag. cuam tshuam qhov vuam zoo. Thiab kom tshem tawm cov impurities xws li roj, xeb, thiab nplai ntawm qhov zawj thiab qhov chaw nyob ze ntawm cov yeeb nkab steel kom pom cov xim hlau. Kev sib tsoo tshuab, tshuaj ntxuav, thiab lwm yam tuaj yeem siv tau.
Rau API 5L Gr.B kauv welded steel kav, submerged arc welding muaj qhov zoo ntawm cov vuam efficiency thiab zoo weld zoo, thiab yog cov feem ntau siv vuam txoj kev. Thaum lub sij hawm vuam txheej txheem, ua kom lub arc ruaj khov thiab tswj lub kaum sab xis thiab pub ceev ntawm vuam pas nrig lossis vuam hlau. Rau kauv welded steel kav, qhov vuam kev taw qhia feem ntau yog los ntawm hauv qab ntawm cov yeeb nkab steel mus rau sab saum toj, thiab nws yuav tsum txav mus rau ntawm ib qho kev sib tw ceev raws li txoj kab kauv. Nyob rau tib lub sijhawm, xyuam xim rau cov duab thiab qhov loj ntawm lub pas dej molten, thiab kho cov vuam tsis nyob rau hauv lub sij hawm kom lub pas dej molten nyob rau hauv zoo fluidity thiab stability.
Tom qab welding tiav, tshem tawm slag, spatter thiab lwm yam impurities nyob rau hauv weld nto nyob rau hauv lub sij hawm. Kev sib tsoo tshuab, hlau txhuam tu thiab lwm txoj hauv kev tuaj yeem siv los ua kom lub vuam nto du thiab huv si, uas yog yooj yim rau kev soj ntsuam zoo tom ntej thiab kev tiv thaiv corrosion.
Raws li qhov yuav tsum tau muaj ntawm cov qauv tsim nyog thiab cov kev qhia tshwj xeeb, kev ntsuas tsis muaj kev puas tsuaj yog ua rau ntawm qhov vuam, xws li kuaj hluav taws xob (RT), kuaj ultrasonic (UT), kuaj cov hlau nplaum sib nqus (MT), thiab lwm yam. tsis xws luag xws li pores, slag inclusions, tawg, thiab lwm yam nyob rau hauv lub weld. Kev ntsuam xyuas tsis muaj kev puas tsuaj yuav tsum tau ua tom qab lub vuam tau txias rau hauv chav sov, thiab qhov kev kuaj pom thiab cov qauv tsim nyog yuav tsum ua raws li cov kev cai ntawm cov qauv xws li API 5L.
API 5L Gr.B Kauv Welded Steel Pipe
