Cov kav dej LSAW ntev yog ib hom kav hlau uas nws cov xov sib txuas yog sib luag ntev rau cov kav hlau, thiab cov khoom siv raw yog phaj hlau, yog li cov phab ntsa tuab ntawm cov kav LSAW tuaj yeem hnyav dua piv txwv li 50 hli, thaum lub cheeb sab nraud txwv rau 1420 hli siab tshaj plaws. Cov kav dej LSAW muaj qhov zoo ntawm cov txheej txheem yooj yim tsim khoom, kev ua haujlwm siab, tus nqi qis.
Ob Chav Submerged Arc Welded (DSAW) yeeb nkab yog ib hom yeeb nkab hlau uas sib txuas ua ke los ntawm cov hlau kauj ua cov khoom siv raw, feem ntau yog cua sov extrusion thiab welded los ntawm kev siv ob sab submerged arc welding txheej txheem. Yog li ntawd, ib qho ntev ntawm cov yeeb nkab DSAW tuaj yeem yog 40meters thaum ib qho ntev ntawm cov yeeb nkab LSAW tsuas yog 12 meters. Tab sis qhov siab tshaj plaws ntawm phab ntsa tuab ntawm cov yeeb nkab DSAW tuaj yeem yog 25.4 hli tsuas yog vim muaj kev txwv ntawm cov kauj kub dov.
Ib qho tshwj xeeb ntawm cov yeeb nkab hlau kauv yog tias lub cheeb sab nraud tuaj yeem ua kom loj heev, Cangzhou Spiral Steel Pipes Group Co.ltd tuaj yeem tsim cov yeeb nkab loj nrog lub cheeb sab nraud tshaj plaws 3500 hli. Thaum lub sijhawm tsim cov txheej txheem, cov hlau kauj raug deformed sib npaug, qhov seem tshuav me me, thiab qhov chaw tsis khawb. Cov yeeb nkab hlau kauv ua tiav muaj kev ywj pheej ntau dua hauv qhov loj me ntawm lub cheeb thiab phab ntsa tuab, tshwj xeeb tshaj yog hauv kev tsim cov yeeb nkab zoo, phab ntsa tuab loj, thiab lub cheeb me me nrog phab ntsa tuab loj, uas muaj qhov zoo tshaj plaws piv rau lwm cov txheej txheem. Nws tuaj yeem ua tau raws li cov neeg siv xav tau ntau dua hauv cov lus qhia ntawm cov yeeb nkab hlau kauv. Cov txheej txheem vuam ob sab submerged arc siab heev tuaj yeem ua tiav kev vuam ntawm qhov chaw zoo tshaj plaws, uas tsis yooj yim kom muaj qhov tsis zoo xws li tsis sib xws, kev vuam tsis sib xws thiab kev nkag mus tsis tiav, thiab nws yooj yim los tswj qhov zoo ntawm kev vuam. Txawm li cas los xij, piv nrog cov yeeb nkab ncaj nrog tib qhov ntev, qhov ntev ntawm kev vuam nce ntxiv 30 ~ 100%, thiab qhov ceev tsim khoom qis.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-14-2022