Qhov tseem ceeb ntawm kev tsim longitudinal seam submerged-arc welded yeeb nkab

Tam sim no, cov kav dej feem ntau yog siv rau kev thauj mus los ntev roj thiab roj. Pipeline steel kav siv nyob rau hauv cov kav dej ntev ntev feem ntau suav nrogkauv submerged arc welded steel kavthiab ncaj seam ob-sided submerged arc welded steel kav. Vim hais tias cov kauv submerged arc welded yeeb nkab yog ua los ntawm sawb hlau thiab nws cov phab ntsa thickness yog txwv, kev txhim kho ntawm steel qib yog txwv los ntawm kev kho cua sov ntawm cov khoom. Tsis tas li ntawd, muaj ib co insurmountable shortcomings ntawm kauv submerged arc welded yeeb nkab, xws li ntev weld, loj residual kev nyuaj siab thiab tsis zoo kev cia siab ntawm weld. Nrog rau cov kev xav tau nce ntxiv rau cov roj thiab cov pa xa hluav taws xob cov kav hlau, lawv tsis siv rau hauv cov cheeb tsam uas muaj neeg nyob thiab thaj chaw muaj kev ntseeg siab, thiabloj-inch ncaj welded kavyog maj mam hloov kauv welded kav.

Tsis ntev los no, Tuam Tshoj tab tom txhim kho cov roj thiab roj hauv East China Sea. Nrog rau txoj kev loj hlob ntawm kev siv roj mus rau qhov tob ntawm dej hiav txwv, cov raj xa dej tso rau ntawm lub hiav txwv yog cuam tshuam los ntawm kev sib xyaw ua ke ntawm lub siab, cuam tshuam quab yuam thiab dabtsi yog khoov quab yuam, thiab qhov tshwm sim ntawm flattening tseem tshwm sim, uas yog qhov tsis muaj zog txuas ntawm kauv welded. cev. Txhawm rau txhim kho txoj kev thauj mus los ntawm cov kav dej thiab ua kom cov kav dej hauv qab tau tsim los ntawm cov phab ntsa tuab, cov kav dej hauv qab feem ntau siv cov yeeb nkab ncaj nraim. Yog li ntawd, piv nrog cov kauv welded yeeb nkab, ncaj welded yeeb nkab muaj qhov siab dua qhov tseeb thiab yooj yim kho vuam, yog li los ntawm qhov no, cov yeeb nkab ncaj welded kuj yog thawj qhov kev xaiv.

Machinery, kev tsim kho, tshuaj lom neeg kev lag luam thiab lwm yam lag luam yuav tsum tau ncaj welded kav. Tam sim no, lub puab qhov ntawm lub rooj zaum valve yog machined tom qab forging nyob rau hauv mechanical kev lag luam, uas yog siv zog-siv, lub sij hawm-siv thiab cov khoom-siv. Yog hais tias tuab-walled ncaj seam welded yeeb nkab yog siv, nws yuav siv tau ntau npaum li cas. Tsis tas li ntawd, vim qhov yuav tsum tau muaj ntawm cov khoom siv ntawm cov khoom siv los tiv thaiv flattening, tsuas yog cov kav dej ncaj nraim yog siv los tsim cov kav dej; Ncaj welded yeeb nkab kuj yuav tsum tau siv rau cov kav dej tshuaj.