Qhov txawv ntawm kub dov thiab txias dov seamless steel kav

Dab tsi yog qhov txawv ntawm kub dov seamless steel yeeb nkab thiab txias dov seamless steel yeeb nkab?Puas yog qhov zoo tib yam seamless steel yeeb nkab kub dov seamless steel yeeb nkab?
Feem ntau cov kav dej txias-dov seamless steel kav yog me me-caliber, thiab feem ntau kub dov seamless steel kav yog loj-caliber.Qhov tseeb ntawm txias dov seamless steel yeeb nkab yog siab dua kub dov seamless steel yeeb nkab, thiab tus nqi kuj siab dua kub dov seamless steel yeeb nkab.
Vim muaj cov txheej txheem ntau lawm, seamless steel kav muab faib ua kub dov (extruded) seamless steel kav thiab txias-draw (dov) seamless steel kav.Cold-drawn (dov) cov kav dej tau muab faib ua cov kav dej thiab cov kav dej tshwj xeeb.
1) Ntau yam kev siv Kub-dov seamless kav tau muab faib ua cov kav dej zoo tib yam, cov kav dej qis thiab nruab nrab siab boiler steel kav, siab siab boiler steel kav, alloy steel kav, stainless hlau kav, roj tawg kav, geological steel kav thiab lwm yam.steel tub..Cold-rolled (dial) seamless steel kav tau muab faib ua cov kav hlau zoo tib yam, qis thiab nruab nrab siab boiler steel kav, siab siab boiler steel kav, alloy steel kav, stainless hlau kav, roj tawg kav, lwm yam steel kav thiab carbon kav..Cov yeeb nkab steel ob-walled, alloyed Pipes steel nyias-walled, kav steel profile.
2) Sab nraud txoj kab uas hla ntawm ntau qhov ntau thiab tsawg ntawm cov kav dej kub tsim seamless feem ntau tshaj 32 hli, thiab phab ntsa thickness yog 2.5-75 hli.Txoj kab uas hla ntawm txias dov seamless yeeb nkab tuaj yeem ncav cuag 6 hli, thiab phab ntsa tuab tuaj yeem ncav cuag 0.25 hli.Sab nraud txoj kab uas hla ntawm nyias-walled yeeb nkab tuaj yeem ncav cuag 5 hli, thiab phab ntsa thickness tsawg dua 0.25 hli.Txias dov muaj qhov ntsuas qhov tseeb dua li qhov kub dov.
3) Qhov sib txawv ntawm cov txheej txheem 1. Cold-dov steel profile tuaj yeem tso cai rau hauv zos khoov ntawm ntu, uas tuaj yeem siv tag nrho cov kabmob muaj peev xwm ntawm cov bent steel bar, thaum kub dov steel profile tsis tso cai rau hauv zos bulging ntawm seem..
2. Cov laj thawj ntawm qhov tshwm sim ntawm cov kev ntxhov siab nyob rau hauv cov khoom kub-kuav los tiag thiab cov khoom txias-kuav los tiag yog qhov sib txawv, yog li qhov kev faib tawm ntawm seem kuj txawv heev.Kev faib tawm ntawm cov kev ntxhov siab seem nyob rau hauv ntu ntu ntawm qhov txias-tsim nyias-walled steel yog curvilinear, thiab kev faib tawm ntawm cov kev ntxhov siab seem nyob rau hauv seem ntawm cov kub-kuav los yog welded steel yog zaj duab xis-zoo li.
3. Lub free torsional rigidity ntawm kub dov hlau yog siab dua li ntawm txias-kuav los tiag steel, yog li qhov torsional kev ua tau zoo ntawm cov hlau kub dov yog zoo dua li cov hlau txias-dov.
4) Ntau qhov zoo thiab qhov tsis zoo ntawm cov kav dej txias txias seamless yog cov ntawv hlau lossis cov hlau nplaum uas tau ua tiav rau hauv ntau hom hlau los ntawm kev kos duab txias, txias khoov, txias txias, thiab lwm yam ntawm chav tsev kub.
Qhov zoo: ceev molding ceev, siab productivity, tsis muaj kev puas tsuaj rau lub txheej, muaj peev xwm tsim ntau yam cross-sectional duab raws li cov kev xav tau ntawm kev siv;txias dov tuaj yeem ua rau cov yas loj deformation ntawm cov hlau, yog li ua kom lub zog tawm los.hlau.
Disadvantages: 1. Txawm hais tias tsis muaj thermoplastic contraction thaum lub sij hawm tsim cov txheej txheem, tseem muaj residual stresses nyob rau hauv seem, uas inevitably muaj feem xyuam rau lub general thiab lub zos buckling yam ntxwv ntawm cov hlau 2. Cov style ntawm txias dov steel yog feem ntau qhib seem, uas. ua rau lub rigidity ntawm seem kom dawb torsion kuj tsawg.Nws yog ib qho yooj yim rau ntswj nyob rau hauv dabtsi yog khoov, yooj yim rau khoov thiab khoov nyob rau hauv compression, thiab muaj tsis zoo torsional tsis kam 3. Lub phab ntsa thickness ntawm txias dov steel los xij yog me me, thiab cov kaum sab xis ntawm cov nplooj ntawv tsis thickened, yog li muaj peev xwm tiv taus. Local concentrated loads tsis muaj zog.
Kub dov seamless kav yog txias dov seamless kav.Cov kav dej txias-dov seamless yog dov hauv qab qhov kub ntawm recrystallization, thaum kub dov seamless kav yog dov saum toj no lub recrystallization kub.
Qhov zoo: Nws tuaj yeem rhuav tshem cov qauv ntawm cov hlau ingot, kho cov hlau nplej, tshem tawm cov txheej txheem tsis xws luag, ua kom cov qauv steel compact, thiab txhim kho cov khoom siv kho tshuab.Qhov kev txhim kho no feem ntau yog tshwm sim hauv kev taw qhia ntawm dov, kom cov hlau tsis muaj isotropic rau qee yam;npuas, tawg thiab friability generated thaum lub sij hawm casting kuj yuav welded ntawm kub thiab siab.
Disadvantages: 1. Tom qab kub dov, tsis yog-hlau inclusions (tsuas yog sulfides thiab oxides, thiab silicates) nyob rau hauv cov hlau yog nias rau hauv nyias daim ntawv thiab delaminate (interlayer).Lub delamination ho degrades lub tensile zog ntawm cov hlau nyob rau hauv lub thickness kev taw qhia, thiab interlaminar puas yuav tshwm sim thaum lub weld shrinks.Lub zos deformation tshwm sim los ntawm lub shrinkage ntawm lub weld feem ntau ncav cuag ob peb zaug lub zog yield deformation, uas yog ntau tshaj qhov deformation los ntawm lub load;
2. Kev ntxhov siab uas tshwm sim los ntawm qhov tsis sib xws.Residual stress yog ib qho kev ntxhov siab hauv tus kheej uas tsis muaj kev quab yuam sab nraud.Qhov kev ntxhov siab seem no muaj nyob rau hauv cov khoom kub-kuav los tiag steel ntawm ntau qhov sib txawv.Raws li txoj cai, qhov loj ntawm qhov hla ntawm cov hlau profile, qhov ntau dua qhov kev ntxhov siab seem.Txawm hais tias qhov seem ntawm kev ntxhov siab yog qhov ntsuas tus kheej, nws tseem muaj qee yam cuam tshuam rau kev ua tau zoo ntawm cov khoom siv hlau nyob rau hauv qhov kev txiav txim ntawm lub zog sab nraud.Piv txwv li, nws tuaj yeem cuam tshuam rau deformation, stability, thiab qaug zog ua haujlwm.
3. Nws tsis yooj yim los tswj cov thickness thiab sab dav ntawm kub dov hlau.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 qee qhov tsis zoo sib txawv tom qab qhov kawg txias.Qhov loj dua qhov tsis zoo sib txawv, qhov tuab tuab thiab qhov pom tseeb ntawm kev ua haujlwm.