Nyob rau hauv cov nqe lus ntawm welding txheej txheem, welding txoj kev ntawm kauv steel yeeb nkab thiab ncaj seam steel yeeb nkab yog zoo ib yam, tab sis cov ncaj seam steel kav inevitably muaj ntau b-welding seams. Yog li ntawd Cov kev ntxhov siab yog loj, thiab cov hlau weld feem ntau nyob rau hauv peb txoj kev ntxhov siab, ua rau muaj kev tawg.
Kauv steel kav thiab ncaj steel kav yog welded steel kav. Lawv tau siv dav hauv kev tsim khoom hauv teb chaws thiab kev tsim kho. Cov kav hlau kav thiab cov kav hlau ncaj nraim muaj ntau qhov sib txawv vim lawv txawv. Qhov txawv.
Cov txheej txheem ntau lawm ntawm cov kav hlau ncaj seam yog qhov yooj yim. Cov txheej txheem tseem ceeb tshaj plaws yog high-frequency vuam ncaj seam steel kav thiab faus arc vuam ncaj seam steel kav. Kev ua tau zoo ntawm cov kav dej ncaj seam yog siab, tsis tshua muaj nqi, thiab kev loj hlob sai.
Thaum tsim cov loj-caliber ncaj seam steel kav hauv kev lag luam, b-welding tshuab yuav siv. Lub luv luv-sewing steel kav nyob rau hauv lub luv luv ntawm ib tug luv luv seem yuav tsum tau txuas nrog kom tau raws li qhov ntev ntawm qhov project. Lub vuam residual kev nyuaj siab ntawm lub seam yog loj, thiab cov hlau weld feem ntau nyob rau hauv peb txoj kev ntxhov siab, ua rau muaj peev xwm ntawm tawg.
Lub zog ntawm kauv steel yeeb nkab feem ntau yog siab dua li cov kav hlau ncaj ncaj. Cov txheej txheem tseem ceeb yog faus arc vuam. Lub kauv steel yeeb nkab tuaj yeem siv cov kav dej sib txawv nrog cov kav dej sib txawv uas muaj qhov dav tib yam, thiab tseem tuaj yeem siv cov kav hlau nqaim nrog lub taub loj dua. Txawm li cas los xij, piv nrog tib qhov ntev ntawm tib qhov ntev, qhov ntev ntawm qhov vuam yog nce los ntawm 30 ~ 100%, thiab qhov ceev ntau lawm yog qis dua. Yog li ntawd, feem ntau ntawm cov me me-caliber welded kav yog welded nrog ncaj seams, thiab feem ntau ntawm cov loj-caliber welded kav yog feem ntau muab kauv welded.
Tsis tas li ntawd, raws li cov txheej txheem ntawm faus arc vuam, txhua qhov vuam seam yuav tsum tau txuas rau arc thiab extinguished arc. Ntau qhov vuam tsis raug. Thaum lub raj nyob hauv qab, nws feem ntau ua rau ob lub ntsiab kev ntxhov siab ntawm lub raj phab ntsa, uas yog radial stress thiab axial stress.
Dab tsi yog qhov txawv ntawm kauv steel kav thiab cov kav hlau ncaj? Qhov twg yuav zoo dua? Feem ntau, DN350 yog siab dua DN350, vim li cas koj thiaj li yuav tsum siv cov kav hlau uas tsis muaj hlua khi ncaj nraim?
Tshwj xeeb tshaj yog, cov kav hlau kav thiab cov kav hlau ncaj nraim yog cov ntaub ntawv ntawm cov kav dej welded. Qhov ob feem ntau sib txawv. Vim lub vuam seam yog muab kauv, lub siab ntawm cov kua yuav muab faib rau txhua sab ntawm lub raj los txhim kho lub zog ntawm cov yeeb nkab.
Yog tias siv cov yeeb nkab ncaj nraim, cov kav dej dav dav yog welded nrog steel phaj. Qhov loj steel phaj yuav tsum tau nce ntau. Yog li ntawd, lub kauv raj yuav siv nrog txoj kab uas hla loj dua. Raws li rau qhov twg yog qhov zoo, vim tias lub peev xwm ntawm ob qhov sib txawv, koj tseem yuav tau xaiv cov yeeb nkab steel raws li qhov xav tau.
