LSAW (longitudinal submerged arc vuam)cov yeeb nkab yog cov khoom siv dav siv hauv ntau qhov kev lag luam vim nws qhov zoo thiab ua haujlwm ntev. Cov txheej txheem tsim khoom ntawm LSAW welded yeeb nkab yog qhov nyuaj tab sis ua haujlwm tau zoo uas yuav tsum muaj kev sib txuas ntawm cov cuab yeej siv niaj hnub thiab cov neeg ua haujlwm txawj.
1)Kev npaj cov khoom siv raw. Cov phaj uas siv los ua cov yeeb nkab yog tshuaj xyuas kom zoo rau txhua qhov tsis xws luag lossis qhov tsis zoo. Tom qab ntawd lawv tau muab khaws cia rau hauv ib qho kev sib koom ua ke thiab muaj kev nyab xeeb kom tsis txhob muaj kev puas tsuaj thaum thauj lossis tuav.
2)Pre-bending kauj ruam, daim hlau raug xa los ntawm lub phaj ntug milling tshuab. Lub tshuab no tshem tawm cov hlau ntau dhau ntawm cov npoo ntawm daim hlau kom paub meej tias lawv ncaj thiab txawm. Tom qab milling, cov hlau yuav raug muab los ntawm lub tshuab ua ntej khoov uas lawv tau tsim ua U-puab. Cov kauj ruam ua ntej khoov no yog qhov tseem ceeb, vim nws pab tshem tawm cov kev ntxhov siab nyob hauv cov phiaj xwm uas tuaj yeem ua rau deformations lossis tsis xws luag thaum vuam.
3)Arc vuam. Thaum cov phaj yog pre-khoov, lawv raug xa mus los ntawm ib tug series ntawm rollers los ua ib ncig. Tom qab ntawd cov npoo ntawm cov phaj yog muab los ua ke thiab welded siv cov txheej txheem submerged arc vuam. Cov txheej txheem no suav nrog kev siv hluav taws xob arc uas yog submerged hauv cov khoom siv flux. Qhov no tsim ib qho kev tiv thaiv ib puag ncig ntawm lub arc, tiv thaiv cov pa oxygen hauv huab cua los ntawm kev sib kis ntawm cov vuam.
4) Tom qab vuam, cov yeeb nkab tau txiav rau nws qhov ntev thiab qhov chaw sab hauv thiab sab nraud raug ntxuav thiab tshuaj xyuas. Tom qab ntawd cov yeeb nkab raug xa mus los ntawm kev ntsuas hydrostatic los xyuas seb puas muaj cov dej xau lossis qhov tsis xws luag. Thaum cov yeeb nkab tau dhau qhov kev sim no, nws yog npaj rau coated nrog ib txheej ntawm corrosion-resistant khoom.
Cov khoom tiav ntawmLSAW steel yeeb nkabmuaj ntau yam specifications, thiab weld seam muaj zoo toughness, plasticity, uniformity thiab compactness. Nws muaj qhov zoo ntawm txoj kab uas hla loj, yeeb nkab phab ntsa thickness, siab tsis kam, tsis kub tsis kam thiab muaj zog corrosion kuj. Nyob rau hauv kev tsim kho ntawm high-strength, high-toughness, high-zoo nyob deb cov roj thiab roj pipelines, feem ntau ntawm cov steel kav yuav tsum tau loj-inch tuab-walled LSAW kav. Raws li API cov qauv, nyob rau hauv cov kav dej loj thiab cov roj tsheb thauj mus los, thaum dhau los ntawm Chav Kawm 1 thiab Chav Kawm 2 xws li thaj chaw alpine, seabeds, thiab cov nroog uas muaj neeg coob, LSAW kav yog tib hom yeeb nkab uas siv tau.
LSAW Longitudinal Welded Pipe Inspection
Hauv kev xaus, cov txheej txheem tsim khoom ntawm LSAW welded yeeb nkab yog ib txoj haujlwm yooj yim tab sis ua haujlwm tau zoo uas yuav tsum muaj kev txawj ntse thiab kev ua haujlwm siab. Nrog kev siv thev naus laus zis niaj hnub thiab cov kws tshaj lij cov neeg ua haujlwm, LSAW welded yeeb nkab yog cov khoom siv ruaj khov thiab ruaj khov uas tau siv dav hauv ntau yam lag luam.
