Ncaj seam welded steel yeeb nkab, tseem paub nyob rau hauv kev lag luam raws li hluav taws xob arc welded steel yeeb nkab lossis EFW steel yeeb nkab, yog ib qho khoom siv siab - zoo welded yeeb nkab khoom siv dav hauv kev lag luam siab - siab, siab - kub, thiab qis - kub. Tsis zoo li zoo tib yam siab - zaus kuj welded yeeb nkab, nws yog ib tug ncaj seam yeeb nkab uas tsim los ntawm ib tug hluav taws xob arc fusion vuam txheej txheem. Lub weld seam yog ncaj nraim raws txoj kab ntev ntawm cov yeeb nkab steel, uas ua rau muaj cov qauv tag nrho thiab cov kev ntxhov siab tsis sib xws, ua rau nws yog cov khoom tseem ceeb rau qhov loj - txoj kab uas hla, tuab - phab ntsa cov kav dej.
Ntau tus neeg tau yooj yim tsis meej pem ncaj seam welded yeeb nkab nrog ncaj seam fusion welded steel yeeb nkab, tab sis lawv cov txheej txheem ntau lawm yog qhov sib txawv. Ordinary ncaj seam tsis kam welded yeeb nkab cia siab rau kev tiv thaiv tshav kub extrusion kev sib txuas, tsis muaj cov hlau muab tub lim, ua rau muaj kev txwv weld toughness thiab siab -cov kabmob muaj peev xwm. Nyob rau hauv sib piv, ncaj seam fusion welded steel yeeb nkab siv nruab nrab - tuab steel phaj li raw khoom. Cov hlau phaj yog stamped thiab dov rau hauv cov yeeb nkab blanks siv cov cuab yeej tshwj xeeb, thiab tom qab ntawd welded siv hluav taws xob arc vuam txheej txheem xws li ob npaug -sided submerged arc vuam, nrog rau vuam hlau thiab flux los sau lub pas dej ua ke. Qhov no fusion vuam txoj kev tso cai rau ib tug meej metallurgical daim ntawv cog lus ntawm lub weld thiab lub hauv paus khoom, uas ua rau ib tug tuab weld qauv. Nws zam tag nrho cov teeb meem xws li tsis tiav welds, slag inclusions, thiab embrittlement uas yooj yim tshwm sim nrog extrusion vuam, ho txhim kho tag nrho cov kev ua tau zoo ntawm cov yeeb nkab.
Nyob rau hauv cov nqe lus ntawm cov txheej txheem ntau lawm, ncaj seam fusion welded steel kav undergo cov txheej txheem nruj thiab nruj zoo tswj. Tom qab kev tsim, cov kav dej tau txais txoj kab uas hla kev nthuav dav thiab ncaj kom ntseeg tau tias qhov sib npaug, phab ntsa thickness uniformity, thiab ncaj raws li cov qauv. Tom qab ntawd lawv yuav tsum dhau 100% tsis yog- kev sim ua kom puas tsuaj, suav nrog kev kuaj ultrasonic thiab radiographic, thiab ua tiav kev ntsuas hydrostatic siab. Rau qee cov kav dej tshwj xeeb uas siv rau hauv siab - kub thiab siab - kev siv siab, kev tshaj tawm ntxiv -weld heat treatment yog ua los tshem tawm cov kev ntxhov siab vuam, ua kom cov khoom ruaj khov thiab kev nyab xeeb ntawm cov txheej txheem kev pom.
Nrog nws txoj kev loj hlob fusion vuam tshuab, ncaj seam fusion welded steel kav muaj ntau yam zoo. Nws cov lus qhia tshwj xeeb npog ntau yam, ua kom muaj qhov loj - txoj kab uas hla, tuab - cov kav dej tshwj xeeb phab ntsa, zoo kawg nkaus haum rau cov khoom hnyav - cov dej num uas cov kav dej sib txuas tsis tuaj yeem ntsib. Nws kuj yog sib xws nrog ntau yam ntaub ntawv, suav nrog cov pa roj carbon zoo tib yam, qis-kub carbon steel, tshav kub- cov alloys resistant, stainless hlau, thiab duplex steel, ua tau raws li ntau yam yuav tsum tau rau corrosion kuj, kub kuj, thiab siab kuj. Piv nrog seamless steel kav, ncaj seam welded steel kav muab tus nqi siab dua -kev ua tau zoo, ntau dua qhov kev hloov kho tshwj xeeb, thiab kev ua tau zoo tag nrho piv rau cov kav dej seamless, ua rau lawv muaj lwm txoj hauv kev siab tshaj - siab rau kev lag luam.
Hauv kev lag luam, cov yeeb nkab steel no muaj ntau lub npe. Dhau li ntawm tus qauv ncaj seam welded steel yeeb nkab thiab hluav taws xob arc welded steel yeeb nkab, cov chaw tsim khoom thiab cov chaw tsim khoom feem ntau xa mus rau nws li submerged arc welded ncaj seam steel yeeb nkab lossis ob -sab submerged arc welded yeeb nkab. Nyob rau hauv kev lag luam txawv teb chaws, nws yog uniformly abbreviated li EFW steel yeeb nkab, uas kuj yog lub ntsiab lus rau lub mainstream LSAW ncaj seam submerged arc welded yeeb nkab. Tag nrho cov npe no xa mus rau tib yam khoom tsim los siv tib txoj kev.
Ua tsaug rau nws qhov kev ruaj khov thiab txhim khu kev qha, ncaj seam welded steel kav muaj ntau yam kev siv. Nws yog siv los ua cov khoom tseem ceeb hauv cov xwm txheej tseem ceeb xws li boiler chav pipelines thiab siab -kub cov kav dej kub hauv cov chaw tsim hluav taws xob, siab - cov txheej txheem siab cov kav dej thiab hydrogenation unit pipelines hauv petrochemical refineries, corrosion- cov kav dej hauv cov ntug dej hiav txwv thiab dej hiav txwv desalination, nrog rau cov kav dej loj thiab cov kav dej. Nws yog ib qho tseem ceeb ntawm cov khoom tseem ceeb rau cov kav dej hauv kev lag luam hnyav, lub zog, thiab kev lag luam tshuaj.
