Hauv loj - nplai steel qauv, cov txheej txheem hauv paus hauv paus, lub zog cua, thiab cov phiaj xwm choj, ntau tus neeg tawm tsam nrog kev xaiv cov khoom siv yeeb nkab. Cov kav welded ib txwm muaj qhov txwv tsis pub thauj khoom - cov kabmob muaj peev xwm, thaum loj - txoj kab uas hla, tuab - cov kav dej seamless yog kim heev. LSAW (Straight Seam Submerged Arc Welded) structural steel kav zoo kawg nkaus ua rau lub lag luam sib txawv rau siab -kawg hnyav- cov kav dej. Txawm hais tias tsis yog cov khoom siv tshwj xeeb, nws yog ib qho ntawm cov ntaub ntawv tseem ceeb tshaj plaws thiab muaj kev ntseeg siab rau ntau yam -tus qauv, siab-load engineering tej yaam num.
Cias muab, LSAW steel kav yog ncaj- seam welded kav ua los ntawm ib qho ntawm nruab nrab- tuab steel phaj los ntawm JCOE txoj kev, sab hauv thiab sab nraud ob -sab submerged arc vuam, thiab txhua yam txias expansion. Tsis zoo li cov kav dej coiled zoo tib yam, nws tsis siv steel sawb coiling; ib qho -daim steel phaj txoj kev tsim kom muaj cov phab ntsa tuab thiab cov khoom ruaj khov los ntawm qhov chaw, tiv thaiv tsis sib xws thickness thiab substrate delamination teeb meem. Qhov no yog nws qhov txiaj ntsig tseem ceeb rau cov khoom hnyav -cov haujlwm. Ntau tus neeg tsis meej pem LSAW (submerged arc welding) cov kav dej nrog cov kav dej welded. Qhov sib txawv tseem ceeb yog qhov pom tseeb heev: LSAW tsuas muaj ib qho kev sib txuas ncaj nraim, uas ua rau txoj hauv kev luv luv thiab kev ntxhov siab tsis tu ncua, zam qhov teeb meem ntawm kab pheeb ces kaum kev nyuaj siab ntawm cov welds.
Ntau tus kws tshaj lij engineering nkag siab tias nyob rau hauv kev thauj khoom tsis muaj zog, qhov chaw txias txias, thiab ntev - lub sijhawm hnyav - lub luag haujlwm, cov kav dej ruaj khov yog qhov tseem ceeb tshaj tus nqi. LSAW's double-sided submerged arc welding process, completed under the protection of a flux layer, results in deep weld penetration, dense formation, and minimal impurities and porosity, leading to excellent overall toughness and fatigue resistance. Tsis tas li ntawd, cov tshuab txias txias tom qab nthuav tawm tau zoo tshem tawm qhov seem vuam kev nyuaj siab thiab kho cov yeeb nkab lub voj voog thiab qhov ncaj, ua rau qhov tseeb qhov tseeb tshaj qhov zoo tib yam welded steel kav. Qhov no ua rau nws hloov tau yooj yim rau ntawm - qhov chaw pob tw vuam thiab flange installation, txo qis kev tsim kho.
Nyob rau hauv cov nqe lus ntawm specifications thiab cov ntaub ntawv, LSAW structural steel kav muaj zog adaptability. Nrog cov txheej txheem diameters xws li 406mm txog 3048mm thiab phab ntsa thicknesses ntawm 6mm mus rau 100mm, LSAW steel yeeb nkab tuaj yeem ua tau raws li cov kev xav tau ntau lawm rau ob qho tib si tus qauv loj - txoj kab uas hla cov qauv kev txhawb nqa thiab ultra- tuab - phab ntsa hnyav - lub hauv paus pawg. Hais txog cov ntaub ntawv, lawv muaj nyob rau hauv dav dav -lub hom phiaj carbon thiab qis- alloy steels xws li Q235B thiab Q355B, nrog rau Q355D/E haum rau qis- kub thiab siab - qhov chaw siab. Lawv kuj ua tau raws li cov qauv thoob ntiaj teb tseem ceeb xws li ASTM A252, EN 10210, thiab API 5L, ua rau lawv haum rau ntau yam loj -scale infrastructure thiab txawv teb chaws engineering tej yaam num nyob rau hauv lub domestic thiab txawv teb chaws.
Tam sim no, lawv cov ntawv thov suav nrog feem ntau ntawm cov qib siab -kawg kev tsim kho vaj tse. Choj lub ntsiab trusses, pier casings, mega-kem rau super siab- cov tsev nce siab, cua turbine foundation towers, chaw nres nkoj steel yeeb nkab pawg, thiab offshore platform txhawb cov qauv- tej yaam num uas tsis tshua muaj siab xav kom muaj kev nyab xeeb thiab ruaj khov yuav luag ib txwm ua qhov tseem ceeb ntawm LSAW structural steel kav. Ua ke nrog cov txheej txheem los tiv thaiv -cov txheej txheem corrosion xws li 3PE, FBE epoxy hmoov txheej, thiab kub-dip galvanizing, lawv tuav lub neej ua haujlwm ntev tsis hais seb puas yog faus hauv av, hauv qab dej, lossis hauv qhov chaw sab nraum zoov hnyav.
