GNEE txais cov txheej txheem txias-kuav los tiag pickling ntau lawm los muab ntau yam ntawm thawj-chav pickled steel daim hlau thiab txias-kuav los tiag steel daim hlau. GNEE muaj lub zog pickling thiab txias-dov ua ke nrog lub zog dov ntawm 3,500 tons.
Dab tsi yog qhov txawv ntawm daim hlau pickled thiab kub dov daim hlau?
Pickled daim hlau: yog ua los ntawm high-zoo kub dov nyias daim hlau. Tom qab lub pickling chav tsev tshem tawm cov oxide txheej, txiav cov npoo, thiab ua tiav, qhov zoo ntawm qhov chaw thiab siv cov kev cai (feem ntau yog txias dabtsi yog khoov lossis stamping kev ua tau zoo) yog cov khoom nruab nrab ntawm cov ntawv kub dov thiab cov phaj txias.
Kub-dov daim hlau: muaj lub zog qis, tsis zoo ntawm qhov chaw (oxidation, tsis tshua muaj tiav), tab sis zoo plasticity, thiab feem ntau yog nruab nrab thiab tuab daim hlau.
Nta ntawm pickled phaj piv rau kub dov daim hlau:
1. Zoo nto zoo. Piv nrog rau cov ntawv kub dov zoo tib yam, cov ntawv kub dov cov ntawv tshem tawm cov nplai oxide, txhim kho qhov zoo ntawm cov hlau, thiab pab kev vuam, roj thiab pleev xim.
2. Qhov siab qhov tseeb. Tom qab flattening, lub phaj zoo tuaj yeem hloov mus rau qee qhov, yog li txo qhov sib txawv ntawm qhov tsis sib xws.
3. Txhim kho qhov chaw tiav thiab txhim kho cov nyhuv zoo.
Koj puas paub qhov txawv ntawm cov ntawv txias-kuav los tiag steel phaj thiab kub dov steel phaj?
1. Qhov saum npoo ntawm cov ntawv txias-kuav los tiag steel ntawv muaj qee yam glossiness thiab zoo nkaus li tus kov, zoo ib yam li cov khob hlau uas siv rau cov dej haus.
2. Yog tias cov ntawv kub-kuav los tiag steel tsis yog pickled, nws zoo ib yam li ntawm ntau cov ntawv hlau zoo tib yam ntawm lub khw. Qhov chaw xeb yog xim liab, thiab qhov chaw tsis xeb yog xim liab-dub (hlau oxide).
Piv nrog cov ntawv kub dov steel, qhov kev ua tau zoo ntawm cov ntawv txias-kuav los tiag yog:
(1) Ntau dua precision, thickness sib txawv ntawm txias-kuav los tiag steel sawb tsis tshaj 0.01 ~ 0.03mm.
(2) Thinner loj, lub thinnest txias-kuav los tiag steel sawb yuav ua tau 0.001mm; lub thinnest kub dov steel sawb tam sim no ncav cuag 0.78mm.
(3) Qhov zoo ntawm qhov chaw zoo dua, txias-kuav los tiag steel ntawv tuaj yeem tsim tau daim iav nto; thaum lub ntsej muag ntawm cov ntawv kub dov steel muaj qhov tsis xws li hlau oxide nplai thiab pitting.
(4) Cov ntawv txias-dov steel tuaj yeem kho nws cov kev ua haujlwm xws li lub zog tensile thiab cov txheej txheem kev ua haujlwm xws li kev ua haujlwm stamping raws li cov neeg siv khoom xav tau.
Txias dov thiab kub dov yog ob txoj kev sib txawv steel dov. Raws li lub npe implies, txias dov yog dov hlau nyob rau hauv chav tsev kub, thiab hom steel muaj siab hardness. Kub dov yog dov hlau ntawm qhov kub thiab txias.
Cov phaj kub-kuav los tiag muaj tsawg hardness, yooj yim rau txheej txheem, thiab muaj ductility zoo.
Cold-dov daim hlau muaj siab hardness thiab kuj nyuaj rau txheej txheem, tab sis tsis yooj yim rau deform thiab muaj zog siab.
Cov phaj kub dov muaj lub zog qis thiab tsis zoo ntawm qhov chaw (oxidation thiab tsis tiav), tab sis zoo plasticity, thiab feem ntau yog nruab nrab thiab tuab daim hlau.
Cold-dov daim hlau muaj lub zog siab, siab hardness, thiab siab nto tiav. Lawv feem ntau nyias daim hlau thiab tuaj yeem siv los ua daim hlau stamping.
Cov khoom siv hluav taws xob ntawm cov phaj kub-kuav los tiag yog qhov qis dua rau cov kev ua haujlwm txias thiab tseem qis dua rau kev ua haujlwm forging, tab sis lawv muaj zoo toughness thiab ductility.
Cold-dov steel phaj muaj qee qhov kev ua haujlwm hardening thiab tsis tshua muaj zog, tab sis tuaj yeem ua tiav cov txiaj ntsig zoo zog, uas yog siv rau qhov txias-khoov qhov chaw xws li nplooj nplooj hlav. Nyob rau tib lub sijhawm, vim tias qhov taw tes tawm los ze dua rau lub zog tensile, tsis muaj kev pom zoo ntawm kev txaus ntshai thaum siv, thiab cov xwm txheej yuav tshwm sim thaum lub load tshaj qhov tso cai.
Los ntawm kev txhais, steel ingots los yog billets yog qhov nyuaj rau deform thiab txheej txheem ntawm chav tsev kub. Lawv feem ntau yog cua sov rau 1100-1250 degree rau dov. Cov txheej txheem dov no hu ua kub dov.
Cov hlau feem ntau yog dov los ntawm kub dov. Txawm li cas los xij, vim tias qhov saum npoo ntawm cov hlau tsis yooj yim los tsim cov hlau oxide nplai ntawm qhov kub thiab txias, qhov saum npoo ntawm cov hlau kub dov yog ntxhib thiab qhov loj me fluctuates heev. Yog li ntawd, steel nrog du nto, meej loj thiab zoo txhua yam khoom yog tsim los ntawm txias dov nrog kub dov semi-tiav khoom los yog tiav cov khoom raws li raw cov ntaub ntawv.
Rolling nyob rau hauv chav tsev kub yog feem ntau to taub raws li txias dov. Los ntawm kev xav ntawm metallurgy, ciam teb ntawm txias dov thiab kub dov yuav tsum tau txawv los ntawm recrystallization kub. Ntawd yog, 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 degree .
Raws li lub npe qhia, kub dov muaj qhov kub thiab txias ntawm lub dov daim, yog li qhov deformation kuj yog me me thiab qhov loj deformation tuaj yeem ua tiav. Noj cov dov ntawm steel daim hlau ua piv txwv, lub thickness ntawm nruam casting billets feem ntau yog hais txog 230mm, thiab tom qab ntxhib dov thiab tiav dov, qhov kawg thickness yog 1 ~ 20mm.
Nyob rau tib lub sijhawm, vim qhov me me dav-rau-thickness piv ntawm steel daim hlau, qhov yuav tsum tau muaj qhov tseeb ntawm qhov seem yog qhov tsawg, thiab cov teeb meem ntawm lub phaj tsis yooj yim tshwm sim, thiab lub ntsiab tseem ceeb ntawm kev tswj cov convexity. Rau cov neeg uas xav tau lub koom haum, nws yog feem ntau ua tiav los ntawm kev tswj dov thiab tswj kev ua kom txias, uas yog, tswj qhov pib dov kub, qhov kawg dov kub thiab curling kub ntawm kev ua tiav dov los tswj cov microstructure thiab mechanical zog ntawm lub sawb.
Txias dov feem ntau tsis muaj txheej txheem cua sov ua ntej dov. Txawm li cas los xij, vim lub thickness me me ntawm cov sawb, cov teeb meem ntawm lub phaj tuaj yeem tshwm sim. Ntxiv mus, tom qab txias dov, nws yog cov khoom tiav. Yog li ntawd, txhawm rau tswj qhov tseeb qhov tseeb thiab qhov zoo ntawm cov sawb, ntau cov txheej txheem cumbersome tau siv.
Cov kab txias dov ntau lawm yog ntev, nrog ntau yam khoom siv thiab cov txheej txheem nyuaj. Nrog rau kev txhim kho ntawm cov neeg siv cov kev xav tau rau cov kab nrib pleb qhov tseeb, lub phaj zoo thiab qhov chaw zoo, cov qauv tswj, L1 thiab L2 systems, thiab phaj zoo tswj txoj hauv kev ntawm chav txias dov yog ntau dua li cov kub dov. Tsis tas li ntawd, qhov kub thiab txias ntawm cov yob thiab strips kuj yog ib qho tseem ceeb ntawm kev tswj cov ntsuas.
Feem ntau hais lus, cov khoom txias-dov thiab cov khoom kub-dov yog qhov sib txawv ntawm cov txheej txheem dhau los thiab cov txheej txheem tom ntej. Cov khoom kub-kuav los tiag yog cov khoom siv raw khoom ntawm cov khoom txias-dov. Cold-rolling yog muab cov kub dov steel coils uas tau muab khaws cia rau ntawm lub tshuab thiab yob lawv siv lub tshuab rolling zeb. Lawv tag nrho cov txheej txheem txias thiab tsim. Lub hom phiaj tseem ceeb yog dov tuab kub-kuav los tiag daim hlau rau hauv nyias txias-dov daim hlau. Feem ntau, 3. Lub hauv paus ntsiab lus tseem ceeb yog siv txoj cai extrusion los yuam kom deformation.
Common steel kub thiab txias dov qhov xwm txheej:
Hlau pas nrig: 5.5-40 hli inch, coiled, tag nrho cov ntaub ntawv kub dov Tom qab kos duab txias, nws belongs rau cov khoom siv txias.
Round steel: Tsuas yog cov ntaub ntawv ci nrog qhov ntev, lawv feem ntau kub dov, thiab tseem muaj cov ntaub ntawv forged (muaj cov cim forging ntawm qhov chaw).
Sawb steel: Ob qho tib si kub-dov thiab txias-dov, cov ntaub ntawv txias-dov yog feem ntau nyias.
Hlau phaj:Cold-dov daim hlaufeem ntau nyias nyias, xws li daim hlau rau tsheb; muaj ntau dua kub-kuav los tiag nruab nrab thiab tuab daim hlau, thiab muaj cov thicknesses zoo sib xws rau txias-dov sawv daws yuav, thiab cov tsos yog pom tseeb txawv.
Lub kaum sab xis steel: Tag nrho cov kub dov.
Cov kav hlau: ob qho tib si welded kub-kuav los tiag thiab txias-draw.
Channel steel thiab H-beam: kub dov.
Rebar: kub dov.
Tiv tauj peb kom tau txais kev daws teeb meem rau koj qhov project.
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