1. Kev faib tawm ntawm cov hlau phaj (xws li sawb hlau):
1. Kev faib tawm los ntawm tuab: (1) phaj nyias (2) phaj nruab nrab (3) phaj tuab (4) phaj tuab ntxiv
2. Kev faib tawm los ntawm txoj kev tsim khoom: (1) Kub-dov steel ntawv (2) Cold-rolled steel ntawv
3. Kev faib tawm los ntawm cov yam ntxwv saum npoo: (1) Galvanized ntawv (kub-dip galvanized ntawv, electro-galvanized ntawv) (2) Tin-plated ntawv (3) Composite steel ntawv (4) Xim coated steel ntawv
4. Kev faib tawm los ntawm kev siv: (1) Choj steel phaj (2) Boiler steel phaj (3) Shipbuilding steel phaj (4) Armor steel phaj (5) Tsheb steel phaj (6) ru tsev steel phaj (7) steel phaj (8) ) Hluav taws xob hlau phaj (silicon steel ntawv) (9) Caij nplooj ntoos hlav steel phaj (10) Lwm yam
2. Kub dov: pickling coil, kub dov kauj, steel phaj, tsheb steel phaj, shipbuilding steel phaj, choj steel phaj, boiler steel phaj, thawv steel phaj, corrosion-resistant phaj, tshav kub hloov txias, Baosteel dav thiab tuab phaj, hluav taws-resistant thiab huab cua-resistant steel
3. Cold rolling: hard-dov coil, txias-dov coil, electro-galvanized ntawv, kub-dip galvanized ntawv, galvanized ntawv, xim-coated coil, tin-coated coil, Baosteel hluav taws xob steel, composite steel ntawv, txias dov. steel sawb, aluminized ntawv, GB kub-dip galvanized ntawv, galvanized xim Xim daim card GB tin-plated WISCO silicon steel
4. Boiling steel phaj thiab tua steel phaj: 1. Boiling steel phaj yog kub dov steel phaj ua los ntawm cov pa roj carbon zoo tib yam steel boiling hlau.Boiling steel yog ib hom hlau uas tsis tiav deoxidation.Tsuas yog qee qhov ntawm deoxidizer tsis muaj zog yog siv los deoxidize molten steel.Cov ntsiab lus oxygen ntawm molten steel yog qhov siab., yog li no lub npe ntawm lub boiling steel.Boiling steel muaj cov ntsiab lus carbon tsawg, thiab txij li ferrosilicon tsis deoxidized, cov ntsiab lus silicon hauv steel kuj tsawg (Si <0.07%).Cov txheej txheej ntawm boiling steel yog crystallized nyob rau hauv cov kev mob ntawm lub zog nplawm ntawm molten hlau tshwm sim los ntawm boiling, yog li lub nto txheej yog ntshiab thiab ntom, nrog zoo nto zoo, zoo plasticity thiab xuas nrig ntaus kev ua tau zoo, tsis muaj loj concentrated shrinkage qhov, txiav xaus.tsawg dua, qhov tawm los yog siab, thiab cov txheej txheem ntawm boiling steel yog yooj yim, kev noj ntawm ferroalloy yog tsawg, thiab tus nqi ntawm cov hlau yog tsawg.Boiling steel phaj yog dav siv nyob rau hauv kev tsim khoom ntawm ntau yam stamping qhov chaw, kev tsim kho thiab engineering cov qauv thiab qee qhov tseem ceeb ntawm lub tshuab ua haujlwm.Txawm li cas los xij, muaj ntau yam impurities nyob rau hauv cov tub ntxhais ntawm boiling hlau, kev sib cais yog loj, cov qauv tsis ntom, thiab cov cuab yeej cuab tam tsis sib xws.Nyob rau tib lub sijhawm, vim muaj roj cov ntsiab lus hauv cov hlau, qhov toughness tsawg, qhov txias brittleness thiab aging rhiab heev yog siab, thiab vuam kev ua tau zoo kuj tsis zoo.Yog li ntawd, cov phaj kub npau npau tsis haum rau kev tsim cov khoom siv welded thiab lwm cov qauv tseem ceeb uas raug cuam tshuam rau kev thauj khoom thiab ua haujlwm nyob rau hauv qhov kub thiab txias.2. Killed steel phaj yog steel phaj ua los ntawm cov pa roj carbon zoo tib yam steel tua steel los ntawm kub dov.Cov hlau tua yog cov hlau deoxidized tag nrho.Lub molten hlau yog tag nrho deoxidized nrog ferromanganese, ferrosilicon thiab txhuas ua ntej pouring.Cov pa oxygen cov ntsiab lus ntawm cov hlau molten yog tsawg (feem ntau 0.002-0.003%), thiab cov hlau molten tseem nyob twj ywm hauv cov pwm pwm.Tsis muaj qhov tshwm sim tshwm sim, yog li lub npe ntawm cov hlau tua.Nyob rau hauv kev ua haujlwm ib txwm muaj, tsis muaj npuas nyob rau hauv cov hlau tua, thiab cov qauv yog sib xws thiab ntom;vim cov ntsiab lus tsis tshua muaj oxygen, cov hlau tsis tshua muaj oxide inclusions, siab purity, thiab tsis txias brittleness thiab aging nyiam;Nyob rau tib lub sijhawm, cov hlau tua muaj kev sib cais me me, qhov kev ua tau zoo sib xws thiab qhov zoo yog siab.Qhov tsis zoo ntawm cov hlau tua yog tias nws muaj cov ntsiab lus shrinkage kab noj hniav, tsis tshua muaj txiaj ntsig thiab tus nqi siab.Yog li ntawd, cov hlau tua yog tsuas yog siv rau cov khoom uas muaj kev cuam tshuam ntawm qhov kub thiab txias, welded qauv thiab lwm yam khoom uas yuav tsum tau muaj zog.Tsawg alloy steel daim hlau yog tua hlau thiab semi-tua steel daim hlau.Vim nws lub zog siab thiab kev ua tau zoo dua, nws tuaj yeem txuag tau ntau cov hlau thiab txo qhov hnyav ntawm cov qauv, thiab nws daim ntawv thov tau dhau los ua ntau thiab ntau dua.5. High-quality carbon structural steel phaj: High-quality carbon structural steel yog carbon steel nrog cov ntsiab lus carbon tsawg dua 0.8%.Cov hlau no muaj tsawg dua sulfur, phosphorus thiab non-metallic inclusions dua li carbon structural steel, thiab muaj cov cuab yeej zoo heev..Cov pa roj carbon zoo zoo tuaj yeem muab faib ua peb pawg raws li cov ntsiab lus carbon: cov pa roj carbon tsawg (C≤0.25%), cov pa roj carbon nruab nrab (C yog 0.25-0.6%) thiab cov pa roj carbon siab (C> 0.6%).High-quality carbon structural steel yog muab faib ua ob pawg raws li cov ntsiab lus ntawm manganese: ib txwm manganese cov ntsiab lus (manganese 0.25% -0.8%) thiab siab dua manganese cov ntsiab lus (manganese 0.70% -1.20%), tom kawg muaj cov khoom siv zoo dua.kev ua tau zoo thiab kev ua haujlwm.1. High-quality carbon structural steel kub dov ntawv thiab strips High-quality carbon structural steel kub dov los xij thiab strips yog siv nyob rau hauv lub tsheb, aviation kev lag luam thiab lwm yam sectors.
Cov qib ntawm nws cov hlau yog boiling hlau: 08F, 10F, 15F;tua hlau: 08, 08AL, 10, 15, 20, 25, 30, 35, 40, 45, 50. 25 thiab hauv qab no yog cov pa roj carbon tsawg, 30 thiab saum toj no 30 yog nruab nrab carbon steel phaj.2. High-quality carbon structural steel kub dov tuab steel daim hlau thiab dav hlau strips High-quality carbon structural steel kub dov tuab steel daim hlau thiab dav hlau strips yog siv rau ntau yam mechanical structural qhov chaw.
Nws cov qib steel yog cov hlau tsis tshua muaj xws li: 05F, 08F, 08, 10F, 10, 15F, 15, 20F, 20, 25, 20Mn, 25Mn, thiab lwm yam;nruab nrab carbon steel muaj xws li: 30, 35, 40, 45, 50, 55, 60, 30Mn, 40Mn, 50Mn, 60Mn, thiab lwm yam;
High carbon steel muaj xws li: 65, 70, 65Mn, thiab lwm yam.
6. Tshwj xeeb qauv steel phaj:
1. Hlau phaj rau lub nkoj siab: Nws tau qhia los ntawm peev R thaum kawg ntawm qib, thiab qib tuaj yeem qhia tau los ntawm cov ntsiab lus los yog cov ntsiab lus carbon lossis alloying.Xws li: Q345R, Q345 yog qhov taw qhia tawm.Lwm qhov piv txwv: 20R, 16MnR, 15MnVR, 15MnVNR, 8MnMoNbR, MnNiMoNbR, 15CrMoR, thiab lwm yam yog sawv cev los ntawm cov ntsiab lus carbon lossis alloying ntsiab lus.
2. Hlau daim hlau rau vuam roj thooj voos kheej kheej: siv lub HP loj ntawm qhov kawg ntawm qib, thiab qib tuaj yeem qhia tau los ntawm qhov taw tes tawm, xws li: Q295HP, Q345HP;nws kuj tuaj yeem qhia nrog cov ntsiab lus alloying xws li: 16MnREHP.
3. Hlau daim hlau rau boilers: siv cov ntawv qis g ntawm qhov kawg ntawm qib.Nws qib tuaj yeem qhia tau los ntawm qhov taw qhia tawm, xws li: Q390g;Nws tuaj yeem raug nthuav tawm los ntawm cov ntsiab lus carbon lossis alloying, xws li 20g, 22Mng, 15CrMog, 16Mng, 19Mng, 13MnNiCrMoNbg, 12Cr1MoVg, thiab lwm yam.
4. steel phaj rau txuas hniav: siv cov ntawv qis q thaum kawg ntawm qib, xws li Q420q, 16Mnq, 14MnNbq, thiab lwm yam. 5. steel phaj rau tsheb ncej: Nws yog qhia los ntawm peev L thaum kawg ntawm qib, xws li 09MnREL, 06TiL, 08TiL, 10TiL, 09SiVL, 16MnL, 16MnREL, thiab lwm yam.