Hauv kev tsim cov kav dej loj loj (xws li cov kav xa mus rau kev thauj cov pa roj lossis roj), LSAW (ntev submerged arc vuam) thiab DSAW (ob npaug-sided submerged arc vuam) yog cov txheej txheem vuam.
Ob leeg muaj ntau qhov sib xws. Nyob rau hauv cov nqe lus ntawm vuam tshuab, ob leeg siv submerged arc vuam los xyuas kom meej weld zoo thiab nkag mus. Nyob rau hauv cov nqe lus ntawm daim ntawv thov, ob qho tib si yog dav siv nyob rau hauv cov xwm txheej uas yuav tsum tau high-strength, loj-inch steel kav, xws li roj thiab roj pipeline tej yaam num. Tsis tas li ntawd, cov kav hlau uas tsim los ntawm ob qho tib si muaj cov welds tseem ceeb hauv thiab sab nraud.
Txawm li cas los xij, kuj tseem muaj qhov sib txawv ntawm ob. Nyob rau hauv cov nqe lus ntawm weld hom, DSAW welds tuaj yeem ncaj (raws li qhov ntev ntawm cov yeeb nkab) los yog kauv (kauv wrapping lub yeeb nkab lub cev), nyob ntawm seb lub hom phiaj thiab specifications, thaum LSAW welds tsuas yog longitudinal, uas yog, welded raws lub longitudinal ntev ntawm cov hlau phaj tom qab ua tiav rau hauv cov yeeb nkab thiab DSAW yeeb nkab muaj seam welds sab hauv thiab sab nraud, thaum lub LSAW yeeb nkab muaj ib tug seam weld ntawm lub sab nrauv, longitudinal los yog cross-section. Nyob rau hauv cov nqe lus ntawm kev siv cov yeeb nkab steel loj, DSAW yog qhov tsim nyog rau ntau qhov sib txawv thiab cov diameters vim nws cov ntaub ntawv sib txawv. Kauv DSAW muaj qhov pom tseeb zoo hauv cov kav dej ntev ntev; LSAW yog tshwj xeeb tshaj yog haum rau hauv nroog infrastructure thiab high-pressure daim ntaub ntawv, xws li dej thiab roj kis tau tus mob. Nyob rau hauv cov nqe lus ntawm cov yeeb nkab kev ua tau zoo, kauv welded DSAW tsis zoo li LSAW nyob rau hauv cov nqe lus ntawm kev nyuaj siab. LSAW siv cov hlau phaj tsim los ntawm JCOE thiab lwm cov txheej txheem, thiab cov khoom siv kho tshuab ntawm cov yeeb nkab phab ntsa yog ntau yam.
LSAW VS DSAW
