Qhov tseeb, steel billets los ntawm steel zeb tsuas yog cov khoom tiav ib nrab, thiab lawv yuav tsum tau muab dov rau hauv dov zeb ua ntej lawv tuaj yeem ua cov khoom tsim nyog steel.Kub dov thiab txias dov yog ob qho txheej txheem dov.Cov dov ntawm cov hlau feem ntau yog kub-kuav los tiag, thiab txias-dov yog tsuas yog siv los tsim cov ntu me me thiab cov nplooj ntawv.Cov nram qab no yog cov khaub thuas-kuav los tiag thiab kub-kuav los tiag steels: Hlau: 5.5-40 mm inch, coiled, tag nrho cov kub-dov.Tom qab kos duab txias, nws belongs rau cov khoom siv kos duab txias.Round steel: Ntxiv rau cov khoom siv ci nrog qhov ntev, nws yog feem ntau kub dov, thiab tseem muaj cov ntaub ntawv forging (forging cov cim ntawm qhov chaw).Sawb steel: ob qho tib si kub-kuav los tiag thiab txias-dov, thiab cov ntaub ntawv txias-dov yog feem ntau nyias.Hlau phaj: cov phaj txias-kuav los tiag yog feem ntau nyias nyias, xws li daim hlau tsheb;muaj ntau qhov kub-dov nruab nrab thiab hnyav daim hlau, nrog cov thicknesses zoo sib xws rau cov khaub thuas dov, thiab lawv cov tsos yog pom tseeb txawv.Lub kaum sab xis steel: tag nrho cov kub dov.Cov yeeb nkab steel: ob qho tib si kub-kuav los tiag thiab txias-draw yog muaj.Channel steel thiab H-beam: kub dov.Reinforced bar: kub dov khoom.
Ob qho tib si kub dov thiab txias dov yog cov txheej txheem rau kev tsim steel phaj lossis profiles, thiab lawv muaj kev cuam tshuam zoo rau cov qauv thiab cov khoom ntawm cov hlau.Cov dov ntawm cov hlau yog tsuas yog ua raws li kub dov, thiab txias dov feem ntau tsuas yog siv rau kev tsim cov ntu me me thiab cov nplooj ntawv nrog qhov ntev.Qhov ntsuas kub ntawm qhov kub dov feem ntau yog 800 txog 900 ° C, thiab tom qab ntawd nws feem ntau yog txias hauv huab cua, yog li lub xeev kub dov yog sib npaug rau normalizing kev kho mob.Cov hlau feem ntau yog dov los ntawm txoj kev kub dov.Vim qhov kub thiab txias, cov hlau xa tawm hauv lub xeev kub dov muaj txheej txheej ntawm cov hlau oxide nplai rau ntawm qhov chaw, yog li nws muaj qee qhov kev tiv thaiv corrosion thiab tuaj yeem khaws cia hauv huab cua qhib.Txawm li cas los xij, txheej txheej ntawm cov hlau oxide no kuj ua rau saum npoo ntawm cov hlau kub-kuav los tiag ntxhib thiab qhov luaj li cas fluctuates zoo heev.Yog li ntawd, cov hlau nrog du nto, qhov loj me thiab cov khoom siv zoo yog yuav tsum tau, thiab cov khoom kub-kuav los yog cov khoom tiav yog siv los ua cov khoom siv rau cov khoom siv txias txias.Qhov zoo: kev sib sau ceev ceev, cov zis siab, thiab tsis muaj kev puas tsuaj rau cov txheej txheem, 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 cov hlau taw tes.Disadvantages: 1. Txawm hais tias tsis muaj cov yas kub compression thaum lub sij hawm tsim cov txheej txheem, tseem muaj kev ntxhov siab nyob rau hauv seem, uas yuav inevitably cuam tshuam rau tag nrho thiab hauv zos buckling yam ntxwv ntawm cov hlau;2. Cov hlau txias-kuav los tiag yog feem ntau yog ib qho qhib, ua rau seem dawb.Torsional nruj yog tsawg.Nws yooj yim rau torsion thaum khoov, thiab khoov-torsional buckling yog nquag tshwm sim thaum compression, thiab torsional kev ua haujlwm tsis zoo;3. Cov phab ntsa thickness ntawm txias-kuav los tiag hlau yog me me, thiab nws tsis yog thickened ntawm cov ces kaum uas cov hlau txuas nrog, yog li nws muaj peev xwm tiv taus kev nyuaj siab hauv zos.Lub peev xwm los mloog cov loads tsis muaj zog.Cold rolling Txias dov yog hais txog txoj kev dov ntawm kev hloov cov duab ntawm cov hlau los ntawm extruding cov hlau nrog lub siab ntawm cov yob ntawm chav tsev kub.Txawm hais tias cov txheej txheem kuj heats li steel ntawv, nws tseem hu ua txias dov.Tshwj xeeb, qhov kub-kuav los tiag steel kauj rau txias dov yog siv los ua cov khoom siv raw, thiab cov nplai oxide raug tshem tawm los ntawm kev khaws cia, thiab tom qab ntawd kev ua haujlwm siab yog ua tiav, thiab cov khoom tiav yog ib qho nyuaj dov.Feem ntau, txias-dov hlau xws li galvanized steel thiab xim hlau phaj yuav tsum tau annealed, yog li cov yas thiab elongation kuj zoo, thiab nws yog dav siv hauv tsheb, khoom siv hauv tsev, kho vajtse thiab lwm yam lag luam.Qhov saum npoo ntawm daim ntawv txias-kuav los tiag muaj qee qhov kev sib tw, thiab txhais tes zoo li smoother, feem ntau yog los ntawm pickling.Qhov saum npoo ntawm cov ntawv kub dov feem ntau tsis ua raws li qhov yuav tsum tau ua, yog li cov hlau kub-kuav los tiag yuav tsum tau txias-dov.Lub thinnest kub-dov hlau sawb feem ntau yog 1.0 hli, thiab txias-dov hlau sawb tuaj yeem ncav cuag 0.1 hli.Kub dov yog dov saum lub crystallization kub taw tes, thiab txias dov yog dov hauv qab ntawm crystallization kub taw tes.Kev hloov pauv ntawm cov duab ntawm cov hlau los ntawm txias dov belongs rau qhov txias txias deformation, thiab txias ua hauj lwm hardening los ntawm cov txheej txheem no tsub kom lub zog, hardness thiab toughness thiab yas Performance index ntawm dov nyuaj coil.Rau kev siv kawg, txias dov deteriorates stamping zog, thiab cov khoom yog haum rau yooj yim deformation qhov chaw.Qhov zoo: Nws tuaj yeem rhuav tshem cov qauv casting ntawm lub ingot, kho 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 yog lub cev isotropic rau qee yam;cov npuas, tawg thiab porosity tsim thaum lub sij hawm casting kuj yuav welded nyob rau hauv qhov kev txiav txim ntawm kub thiab siab.Disadvantages: 1. Tom qab kub dov, cov non-metallic inclusions (tsuas yog sulfides thiab oxides, thiab silicates) nyob rau hauv cov hlau yog nias rau hauv nyias nyias, thiab delamination tshwm sim.Delamination zoo heev deteriorates tensile zog ntawm cov hlau los ntawm lub thickness, thiab muaj peev xwm rau interlaminar tearing raws li cov weld shrinks.Lub cheeb tsam induced los ntawm shrinkage ntawm lub weld feem ntau ncav cuag ob peb lub sij hawm lub yield point strain, uas yog ntau npaum li cas loj tshaj lub strain tshwm sim los ntawm lub load;2. Kev ntxhov siab uas tshwm sim los ntawm qhov tsis sib xws.Residual stress yog qhov kev ntxhov siab ntawm tus kheej-theem equilibrium uas tsis muaj kev quab yuam sab nraud.Kub dov seem steel ntawm ntau seem muaj xws li residual stress.Feem ntau, qhov loj dua qhov loj ntawm cov seem steel, qhov loj dua qhov seem seem.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 haujlwm ntawm cov tswv cuab steel nyob rau hauv qhov kev txiav txim ntawm sab nraud quab yuam.Piv txwv li, nws yuav muaj kev cuam tshuam tsis zoo rau deformation, stability, thiab qaug zog ua hauj.