Cov kav dej txias-dov seamless steel kav feem ntau ntawm cov kab me me, thiab cov kav dej kub-dov seamless steel kav feem ntau ntawm txoj kab uas hla loj. Qhov tseeb ntawm cov yeeb nkab txias-dov seamless steel yeeb nkab yog siab dua li ntawm cov yeeb nkab kub-dov seamless steel yeeb nkab, thiab tus nqi kuj tseem siab dua li cov yeeb nkab kub-dov seamless steel yeeb nkab.
Seamless steel kav yog muab faib ua kub dov (extruded) seamless steel kav thiab txias-draw (dov) seamless steel kav vim lawv txawv manufacturing txheej txheem. Cold drawn (dov) raj tau muab faib ua cov raj puag ncig thiab cov raj tshwj xeeb.
- Cov kav dej kub-dov seamless yog muab faib ua cov kav hlau dav dav, qis thiab nruab nrab siab boiler steel kav, siab siab boiler steel kav, alloy steel kav, stainless hlau kav, roj av cracking kav, geological steel kav thiab lwm yam steel kav. Cold-rolled (dial) seamless steel kav tau muab faib ua cov kav hlau dav dav, qis thiab nruab nrab siab boiler steel kav, siab siab boiler steel kav, hlau alloy steel kav, stainless hlau kav, roj av tawg kav, thiab lwm yam steel kav, thiab lwm yam. carbon nyias-walled steel kav, alloy nyias-walled steel kav, Stainless nyias-walled steel kav, tshwj xeeb-zoo li tus steel kav.
- Qhov ntau thiab tsawg Cov txheej txheej ntawm cov yeeb nkab kub dov seamless feem ntau ntau dua 32 hli thiab phab ntsa tuab yog 2.5-75mm. Txoj kab uas hla ntawm cov yeeb nkab txias-dov seamless tuaj yeem ncav cuag 6 hli thiab phab ntsa tuab tuaj yeem ncav cuag 0.25mm. Sab nraud txoj kab uas hla ntawm nyias-walled yeeb nkab tuaj yeem ncav cuag 5mm thiab phab ntsa thickness tsawg dua 0.25mm. Txias dov muaj qhov tseeb qhov tseeb dua li qhov kub dov.
- Qhov txawv ntawm cov txheej txheem
①Cov khoom txias-dov ua hlau tso cai rau hauv zos buckling ntawm ntu, uas tuaj yeem siv tag nrho cov kabmob muaj peev xwm ntawm lub bar tom qab buckling; thaum lub kub-kuav los tiag steel tsis pub lub zos buckling ntawm seem.
② Kub-dov hlau thiab txias-kuav los tiag steel muaj qhov sib txawv ntawm qhov seem ntawm kev ntxhov siab, yog li qhov kev faib tawm ntawm seem kuj txawv heev. Qhov seem kev ntxhov siab faib rau ntawm ntu ntu ntawm qhov txias-tsim nyias-walled steel yog nkhaus, thaum qhov seem kev ntxhov siab faib rau ntawm ntu ntu ntawm kub: dov steel lossis welded steel yog nyias-zaj duab xis.
③ Qhov tsis muaj torsional nruj ntawm cov hlau kub dov yog siab dua li cov hlau txias-dov, yog li qhov torsion tsis kam ntawm cov hlau kub dov yog zoo dua li cov hlau txias.
Txawv qhov zoo thiab qhov tsis zoo
Cold-dov seamless yeeb nkab yog hais txog lub phaj hlau lossis steel sawb ua tiav rau hauv ntau hom hlau los ntawm kev kos duab txias, txias khoov, kos duab txias thiab lwm yam kev ua haujlwm txias ntawm chav tsev kub.
Qhov zoo:
Kev sib sau ceev ceev, cov zis siab, thiab ua rau cov txheej txheem puas tsuaj, tuaj yeem ua rau ntau hom ntawv sib dhos kom tau raws li cov kev xav tau ntawm kev siv; txias dov tuaj yeem ua rau cov yas loj deformation ntawm cov hlau, yog li txhim kho cov txiaj ntsig ntawm steel taw tes.
Qhov tsis zoo:
1.Txawm hais tias tsis muaj thermal yas compression thaum lub sij hawm tsim cov txheej txheem, tseem muaj residual stresses nyob rau hauv seem, uas yuav inevitably cuam tshuam rau tag nrho thiab lub zos buckling yam ntxwv ntawm cov hlau;
2. Cov style ntawm txias-kuav los tiag steel feem ntau yog ib qho qhib seem, uas ua rau cov dawb torsional nruj ntawm seem qis. Nws yooj yim rau torsion thaum khoov, thiab nws yooj yim rau khoov thiab torsion buckling thaum raug compressed, thiab torsion kuj tsis zoo;
3. Cov phab ntsa tuab ntawm cov hlau txias-dov yog me me, thiab tsis muaj thickening ntawm cov ces kaum uas cov phaj koom nrog, thiab muaj peev xwm tiv taus lub hauv paus concentrated loads tsis muaj zog.
Kub-dov seamless raj yog txheeb ze rau txias-dov seamless raj. Cold-rolled seamless raj yog dov hauv qab qhov kub ntawm recrystallization, thaum kub dov seamless raj yog dov saum toj no lub recrystallization kub.
Qhov zoo:
Nws tuaj yeem rhuav tshem cov qauv casting ntawm cov hlau ingot, ua kom cov nplej ntawm cov hlau, thiab tshem tawm qhov tsis xws ntawm microstructure, kom cov qauv hlau yog ntom thiab cov khoom siv kho kom zoo tuaj. Qhov kev txhim kho no feem ntau yog tshwm sim hauv cov kev taw qhia dov, kom cov hlau tsis muaj isotropic rau qee yam; npuas, tawg thiab looseness tsim thaum lub sij hawm casting kuj yuav welded nyob rau hauv kub thiab siab.
Qhov tsis zoo:
1. Tom qab kub dov, cov non-metallic inclusions (tsuas yog sulfides thiab oxides, nrog rau silicates) nyob rau hauv cov hlau yog nias rau hauv nyias nyias, thiab delamination (interlayer) tshwm sim. Delamination zoo heev deteriorates lub tensile zog ntawm cov hlau nyob rau hauv thickness kev taw qhia, thiab nws muaj peev xwm hais tias interlayer tearing yuav tshwm sim thaum lub weld shrinks. Cov kab mob hauv cheeb tsam cuam tshuam los ntawm weld shrinkage feem ntau nce mus txog ob peb zaug ntawm cov ntsiab lus tawm los, uas yog loj dua li cov kab mob tshwm sim los ntawm kev thauj khoom;
2. Kev ntxhov siab uas tshwm sim los ntawm qhov tsis sib xws. Residual stress yog qhov kev ntxhov siab hauv tus kheej uas tsis muaj kev quab yuam sab nraud. Kub-kuav los tiag steel seem ntawm ntau yam ntoo khaub lig-section muaj xws li residual stresses. Feem ntau, qhov loj dua qhov loj ntawm cov seem steel, qhov loj dua qhov seem ntawm kev ntxhov siab. Txawm hais tias qhov seem ntawm kev ntxhov siab yog qhov sib npaug ntawm tus kheej, nws tseem muaj qee yam cuam tshuam rau kev ua tau zoo ntawm cov khoom siv hlau hauv qab lub zog sab nraud. Piv txwv li, nws yuav muaj kev cuam tshuam tsis zoo rau deformation, stability, thiab qaug zog tiv thaiv.
3. Cov khoom kub-kuav los tiag steel tsis yooj yim rau kev tswj ntawm cov thickness thiab ntug dav. Peb paub txog thermal expansion thiab contraction. Vim hais tias thaum pib, txawm tias qhov ntev thiab tuab yog raws li tus qauv, yuav muaj qhov txawv tsis zoo tom qab qhov kawg txias. Qhov dav qhov tsis zoo sib txawv, qhov tuab tuab, qhov pom tseeb ntawm kev ua haujlwm.
Raws li ib qho ntawm cov neeg lag luam uas paub zoo tshaj plaws ntawm Kub Rolled thiab Cold Rolled Seamless Steel Tube, Vigor muaj peev xwm ua kom tiav kev tsim khoom raws li qhov xav tau ntawm peb cov neeg siv khoom, thiab peb kuj tau npaj qee cov khoom lag luam kom peb cov neeg siv khoom tuaj yeem yuav lawv hauv lub sij hawm luv heev. Pab pawg Vigor tseem yuav ib txwm muab peb cov neeg siv khoom nrog cov khoom zoo tshaj plaws thiab cov kev pabcuam kom cov neeg siv khoom lub xaib tuaj yeem ua haujlwm tau zoo. Yog tias koj muaj lus nug, thov tsis txhob yig tiv tauj peb kom tau txais cov khoom lag luam tshaj lij thiab cov kev pabcuam zoo tshaj plaws.
Yog xav paub ntxiv, koj tuaj yeem sau rau peb lub thawv ntawvinfo@vigorpetroleum.com & mail@vigorpetroleum.com
