1. Kev sib piv ntawm cov txheej txheem tsim khoom
Cov txheej txheem tsim khoom ntawmncaj seam hlau yeeb nkabyooj yim heev. Cov txheej txheem tsim khoom tseem ceeb yog cov xov hlau ncaj nraim uas muaj zaus siabyeeb nkab hlauthiabsubmerged arc welded ncaj seam steel yeeb nkabCov yeeb nkab hlau ncaj nraim muaj kev ua haujlwm siab, tus nqi qis thiab kev loj hlob sai.
Lub zog ntawmcov yeeb nkab hlau kauvfeem ntau siab dua li ntawm cov yeeb nkab hlau ncaj nraim. Cov txheej txheem tsim khoom tseem ceeb yog kev vuam submerged arc. Cov kav hlau kauv tuaj yeem tsim cov kav hlau vuam nrog cov kab sib txawv ntawm cov billets ntawm tib qhov dav, lossiscov kav dej vuamnrog cov diameters loj dua los ntawm cov billets nqaim.
Txawm li cas los xij, piv rau cov kav hlau ncaj nraim uas muaj tib qhov ntev, qhov ntev ntawm kev vuam tau nce 30% thiab 100% feem, thiab qhov ceev ntawm kev tsim khoom qis. Yog li ntawd, cov kav hlau loj uas muaj txoj kab uas hla feem ntau yog vuam los ntawm kev vuam kauv, thiab cov kav hlau me uas muaj txoj kab uas hla feem ntau yog vuam los ntawm kev vuam ncaj nraim.
Thaum tsim khoomcov kav hlau loj uas ncaj thiab sib txuasHauv kev lag luam, siv cov thev naus laus zis vuam T-puab, uas yog, muaj ob peb lub yeeb nkab hlau ncaj nraim uas tau sib koom ua ke thiab txuas nrog kom tau raws li qhov ntev uas xav tau ntawm qhov project. Qhov tsis zoo ntawm cov yeeb nkab hlau ncaj nraim T-puab yuav nce ntxiv ntau heev, thiab qhov seem vuam ntawm cov yeeb nkab hlau T-puab loj heev. Cov hlau vuam feem ntau nyob hauv qab kev ntxhov siab triaxial, uas ua rau muaj kev tawg.
Ntxiv rau, raws li cov cai tswjfwm kev siv tshuab ntawm kev vuam submerged arc, txhua qhov vuam yuav tsum raug kev kho mob arc striking thiab arc extinguishing. Txawm li cas los xij, txhua lub yeeb nkab hlau tsis tuaj yeem ua tau raws li qhov xwm txheej no thaum lub sijhawm vuam circumferential seam, yog li ntau qhov tsis zoo ntawm kev vuam yuav tshwm sim thaum lub sijhawm arc extinguishing.
2. Kev sib piv ntawm cov kev ua tau zoo
Thaum cov yeeb nkab raug kev nyuaj siab sab hauv, ob qho kev ntxhov siab tseem ceeb feem ntau yog tsim rau ntawm phab ntsa yeeb nkab, uas yog kev ntxhov siab radial thiab kev ntxhov siab axial. Kev ntxhov siab dav dav ntawm qhov vuam, qhov twg α Nws yog lub kaum sab xis ntawm qhov vuam ntawmkauv hlau yeeb nkab.
Qhov kev ntxhov siab dav dav ntawm qhov sib txuas ntawm cov kauv yog qhov kev ntxhov siab tseem ceeb ntawm cov yeeb nkab hlau ncaj. Nyob rau hauv tib lub zog ua haujlwm, lub phab ntsa tuab ntawm cov yeeb nkab hlau kauv nrog tib lub taub ntawm cov yeeb nkab yog me dua li ntawm cov yeeb nkab hlau ncaj.
Lub sijhawm tshaj tawm: Lub Ib Hlis-03-2023
