Longitudinally submerged arc vuam yeeb nkab, feem ntau hu ua LSAW / SAWL yeeb nkab.
LSAW yeeb nkab yog tsim los ntawm kev khoov thiab vuam steel phaj ua ke, tsim kom muaj lub tog raj kheej. Cov txheej txheem vuam muaj xws li submerged arc, uas tsim kom muaj kev sib txuas ruaj khov thiab ruaj khov ntawm cov hlau.
Ib qho txiaj ntsig tseem ceeb ntawm LSAW yeeb nkab yog tias nws tuaj yeem siv los tsim cov qauv loj thiab nyuaj. Vim nws lub peev xwm los tsim cov kav dej loj, LSAW kav yog qhov kev xaiv nrov rau cov kav dej, suav nrog cov roj thiab cov kav dej thiab cov kav dej.
Lwm qhov zoo ntawm LSAW yeeb nkab yog nws qhov siab tiv thaiv corrosion thiab yaig. Lub submerged arc vuam txheej txheem tsim cov txheej txheem tiv thaiv uas pab tiv thaiv xeb thiab lwm yam kev puas tsuaj, uas ua rau cov kav dej LSAW zoo tagnrho rau kev siv hauv qhov chaw hnyav.
Tsis tas li ntawd, LSAW yeeb nkab muaj qhov smoother saum npoo piv rau lwm hom welded kav, uas txo cov kev sib txhuam ntawm cov kua dej los yog cov pa roj los ntawm cov kav dej. Qhov no ua rau cov kav dej LSAW ua haujlwm zoo dua rau kev thauj mus los.
Tag nrho hauv tag nrho, LSAW yeeb nkab yog tus nqi tsim nyog thiab kev xaiv txhim khu kev qha rau ntau daim ntawv thov kev lag luam. Nws cov kav ntev, tiv thaiv corrosion thiab yaig, thiab muaj peev xwm los tsim cov qauv loj ua rau nws yog qhov kev xaiv zoo rau cov tuam txhab xav txog.
MADING PROCESS
TSEEM CEEB: API 5L, Qib: Qib B, X42, X52, X56, X60, X65, thiab X70
1. API 5L, QIB: Qib B, X42, X52, X56, X60, X65, thiab X70: Qhov no yog ib qho ntawm cov qauv siv feem ntau rau LSAW kav. Ua los ntawm American Petroleum Institute, nws ua kom zoo thiab kav ntev rau cov kav dej siv hauv kev lag luam roj thiab roj.
2. ASTM A252, ASTM A252Standard: Cov qauv no yog siv rau cov kav dej LSAW siv hauv kev siv piling thiab cov qauv siv. ASTM A252 cov kav dej yog tsim nyob rau hauv peb qib: Qib 1, Qib 2, thiab Qib 3. Cov qib no muaj lub zog tensile siab thiab zoo tagnrho rau siv hauv cov hauv paus tob thiab cov qauv sab nrauv.
3.TS EN 10219Standard: Qhov no yog ib tug European qauv siv rau LSAW kav uas tsim rau cov qauv siv. EN10219 cov kav dej tuaj nyob rau qib sib txawv, suav nrog S235JRH, S275J0H, S275J2H, S355J0H, S355J2H, S355K2H, thiab S460NH. Cov qib no muaj kev weldability zoo, formability, thiab corrosion kuj, ua rau lawv haum rau ntau yam kev siv.
4. GB/T 3091-2008Standard: Qhov no yog Suav tus qauv siv rau LSAW cov kav dej uas tsim los rau cov dej thiab cov dej ntws. GB/T3091-2008 kav yog tsim nyob rau hauv peb qib: Q195, Q215, thiab Q235. Cov qib no muaj cov cuab yeej zoo thiab muaj kev tiv thaiv corrosion, ua rau lawv zoo tagnrho rau kev siv dej.
5. TIAB SA 2458Standard: Qhov no yog tus qauv German siv rau LSAW cov kav dej uas tsim los rau kev tsim qauv. DIN 2458 cov kav dej tuaj hauv ntau qib, suav nrog St37.2, St44.2, thiab St52.3. Cov qib no muaj lub zog siab thiab ua haujlwm ntev, ua rau lawv zoo tagnrho rau kev siv hauv kev tsim kho thiab kev tsim kho vaj tse.
