Ob qho tib si kub dov thiab txias dov yog steel phaj los yog profile tsim cov txheej txheem, lawv muaj kev cuam tshuam zoo rau cov qauv thiab cov khoom ntawm cov hlau.

Hlau dov feem ntau yog kub dov, txias dov feem ntau tsuas yog siv los tsim cov hlau me me thiab cov ntawv hlau thiab lwm yam hlau loj.

Common txias thiab kub dov ntawm steel:

Hlau: 5.5-40 mm inch, coils, tag nrho cov kub dov.Tom qab kos duab txias, nws belongs rau cov khoom siv kos duab txias.

Round steel: Ntxiv nrog rau qhov tseeb ntawm qhov loj ntawm cov khoom siv ci yog feem ntau kub dov, tab sis kuj forged (dog kab ntawm forging).

Sawb steel: kub dov txias dov, txias dov feem ntau nyias.

Hlau phaj: txias dov phaj yog feem ntau nyias, xws li tsheb phaj;Kub dov nruab nrab tuab phaj ntau dua, thiab txias dov zoo li thickness, zoo li pom tseeb txawv.

Lub kaum sab xis steel: tag nrho cov kub dov.

Steel raj: welded kub dov thiab txias kos.

Channel thiab H beam: kub dov.

Steel bar: kub dov khoom.

Kub dov

Los ntawm kev txhais, steel ingot los yog billet yog qhov nyuaj rau deform thiab txheej txheem ntawm chav tsev kub.Nws yog feem ntau rhuab mus rau 1100 ~ 1250 ℃ rau dov.Cov txheej txheem dov no hu ua kub dov.

Qhov ntsuas kub ntawm qhov kub dov feem ntau yog 800 ~ 900 ℃, thiab tom qab ntawd nws feem ntau 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 kub dov.Kub dov hlau, vim qhov kub thiab txias, qhov saum npoo ntawm qhov tsim ntawm txheej txheej oxide, yog li muaj qee yam corrosion kuj, tuaj yeem khaws cia hauv huab cua qhib.

Txawm li cas los xij, txheej txheej ntawm oxide hlau no kuj ua rau saum npoo ntawm kub dov hlau ntxhib thiab qhov loj me hloov pauv tau zoo, yog li cov hlau nrog du nto, qhov loj me thiab cov khoom siv zoo yuav tsum tau siv los ua raw khoom thiab tom qab ntawd txias dov.

Qhov zoo:

Kev sib sau ceev, siab yield, thiab tsis ua rau cov txheej txheem ua kom puas, tuaj yeem ua rau ntau hom ntawv hla ntu, kom tau raws li qhov xav tau ntawm kev siv;Txias dov tuaj yeem tsim cov yas deformation loj ntawm cov hlau, yog li tsa cov ntsiab lus ntawm cov hlau.

Qhov tsis zoo:

1. Txawm hais tias tsis muaj cov yas kub compression nyob rau hauv txoj kev tsim, tseem muaj kev ntxhov siab nyob rau hauv seem, uas yuav inevitably cuam tshuam rau tag nrho thiab hauv zos buckling zog ntawm steel;

2. Qhov txias-kuav los tiag yog feem ntau qhib seem, uas ua rau dawb torsion txhav ntawm seem qis.Nws yog ib qho yooj yim rau ntswj thaum nws yog khoov, thiab nws yog ib qho yooj yim rau khoov thiab twist thaum nws nias, thiab torsion kuj tsis zoo.

3. Cov phab ntsa tuab ntawm cov khaub thuas-kuav los tiag zoo li tus hlau yog me me, thiab tsis muaj thickening ntawm lub ces kaum uas lub phaj txuas, yog li nws muaj peev xwm tsis muaj zog los dais hauv zos concentrated load.

Txias dov

Txias dov yog hais txog txoj kev dov ntawm kev hloov cov duab ntawm cov hlau los ntawm kev nyem cov hlau nyob rau hauv lub siab ntawm cov menyuam ntawm chav tsev kub.Nws yog hu ua txias dov, txawm tias cov txheej txheem kuj heats li hlau.Yuav kom paub meej dua, txias dov siv kub dov steel coils ua raw cov ntaub ntawv, uas tau ua tiav nyob rau hauv siab tom qab acid pickling kom tshem tawm cov oxide nplai, thiab cov khoom tiav yog dov hard coils.

Feem ntau txias dov hlau xws li galvanized, xim hlau phaj yuav tsum tau annealed, yog li cov yas thiab elongation kuj zoo, dav siv hauv tsheb, khoom siv hauv tsev, kho vajtse thiab lwm yam lag luam.Qhov saum npoo ntawm lub phaj txias-kuav los tiag muaj qee qhov kev sib tw, thiab txhais tes zoo nkaus li du, feem ntau vim yog pickling.Qhov saum npoo ntawm lub phaj kub dov tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua, yog li cov kub dov steel sawb yuav tsum tau txias dov, thiab lub thickness ntawm kub dov steel sawb feem ntau yog 1.0 hli, thiab txias dov steel strip tuaj yeem ncav cuag 0.1 hli. .Kub dov yog dov saum lub crystallization kub taw tes, txias dov yog dov hauv qab ntawm crystallization kub taw tes.

Qhov kev hloov ntawm cov hlau zoo los ntawm qhov txias dov belongs rau qhov txias txias deformation.Qhov txias hardening tshwm sim los ntawm cov txheej txheem no ua rau kom lub zog thiab hardness ntawm dov hard coil thiab txo cov toughness thiab yas index.

Rau kev siv kawg, txias dov deteriorates stamping kev ua tau zoo thiab cov khoom tsim nyog rau qhov chaw uas yooj yim deformed.

Qhov zoo:

Nws tuaj yeem rhuav tshem cov qauv ntawm cov hlau ingot, ua kom cov nplej loj ntawm cov hlau, thiab tshem tawm qhov tsis xws ntawm microstructure, kom cov qauv steel yog compacted 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, thiab silicates) nyob rau hauv cov hlau yog laminated thiab txheej.Delamination zoo heev deteriorates lub tensile zog ntawm steel raws thickness kev taw qhia thiab tej zaum yuav ua rau interlaminar tearing thaum weld shrinkage.Lub hauv paus strain induced los ntawm weld shrinkage feem ntau yog ob peb zaug ntawm yield point strain, uas yog loj npaum li cas los ntawm load.

2. Kev ntxhov siab uas tshwm sim los ntawm qhov tsis sib xws.Qhov seem kev ntxhov siab yog qhov kev ntxhov siab hauv tus kheej-theem equilibrium tsis muaj kev quab yuam sab nraud.Txhua yam kub dov seem steel muaj qhov seem ntawm kev ntxhov siab.Qhov loj dua qhov loj ntawm cov seem steel yog, qhov loj dua qhov seem seem yog.Txawm hais tias qhov seem ntawm kev ntxhov siab yog qhov sib npaug ntawm tus kheej, nws muaj qee yam cuam tshuam rau kev ua haujlwm ntawm cov tswv cuab steel nyob rau sab nraud quab yuam.Xws li deformation, stability, qaug zog tiv thaiv thiab lwm yam yuav muaj kev phiv.

Xaus:

Qhov sib txawv ntawm qhov txias dov thiab kub dov yog qhov kub ntawm cov txheej txheem dov."Cold" qhia qhov kub thiab txias, thiab "kub" qhia tias kub siab.

Los ntawm qhov pom ntawm cov xim hlau, qhov ciam teb ntawm qhov txias dov thiab kub dov yuav tsum txawv ntawm recrystallization kub.Ntawd yog, qhov dov hauv qab qhov kub ntawm recrystallization yog txias dov, thiab dov saum toj no lub recrystallization kub yog kub dov.Lub recrystallization kub ntawm steel yog 450 ~ 600 ℃.