1.Vim li cas steel pheej yig hauv Suav teb?
Cov keeb kwm tsis tshua muaj nqi ntawm cov hlau hauv Suav teb feem ntau yog qhov tshwm sim ntawm ** qhov hnyav dhau ** . Tau ntev, Tuam Tshoj txoj kev lag luam steel tau tsim ntau tshaj li qhov xav tau hauv tsev. Qhov no oversupply nyob rau hauv lub lag luam ib txwm drives nqi.
Muaj ntau yam ua rau muaj qhov overcapacity:
* **Txoj Cai-Txoj Kev Tsim Nyog**: yav dhau los, kev ntsuam xyuas tsoomfwv hauv nroog tau muab qhov tseem ceeb tshaj qhov kev loj hlob GDP. Txij li thaum cov hlau ntau lawm ua rau muaj txiaj ntsig zoo rau cov txiaj ntsig kev lag luam, tsoomfwv hauv nroog tau muaj kev txhawb siab los ua kom cov nroj tsuag steel ua haujlwm, txawm tias poob, kom "tshem" GDP thiab kev ua haujlwm, ua rau tsis muaj txiaj ntsig thiab nthuav dav ntxiv.
* **Uneven Industrial Structure**: Kev ua lag luam tau pom los ntawm cov khoom qis tshaj -kawg steel thiab qhov tsis txaus siab ntawm siab - kawg, tshwj xeeb steels. Qee qhov me me steel mills nrog qis ib puag ncig thiab nqi zog (kwv yees li 30 yuan / tuj) tuaj yeem txo qis cov lag luam loj, ua raws (nrog cov nqi ntawm 120-150 yuan / ton), tsim kev sib tw rau hauv qab ntawm tus nqi .
* ** Export Pressure **: Txhawm rau tswj hwm cov khoom lag luam hauv tsev siab, Tuam Tshoj steel tuam txhab lag luam feem ntau tig mus rau kev xa tawm, qee zaum ua rau kev lag luam kev sib txhuam raws li lwm lub teb chaws liam tias cov hlau yog muag ntawm tus nqi qis.
2. Tus nqi ntawm A36 steel ib kg yog dab tsi?
Tus nqi tshwj xeeb tsis ntev los no rau A36 steel tsis muaj nyob hauv cov txiaj ntsig tshawb fawb. Txawm li cas los xij, kev siv los ntawm thaum ntxov 2025 teev tus nqi ntawm **3,750 Yuan ib tuj** rau ASTM A36 steel phaj.
Hloov qhov no mus rau ib qho -kg tus nqi:
* ** 3,750 Yuan/ton ÷ 1,000 kg/ton=3.75 Yuan/kg**
Thov nco ntsoov tias qhov no yog tib cov ntaub ntawv taw qhia thiab tus nqi tiag tiag tuaj yeem sib txawv raws li yam xws li kev txiav txim kom muaj nuj nqis, daim ntawv (phaj, bar, thiab lwm yam), cheeb tsam, thiab kev lag luam tam sim no. Rau cov lus qhia meej, nws yog qhov zoo tshaj plaws hu rau cov neeg muag khoom ncaj qha.
3.Yog A36 steel muaj zog?
Yog lawm, A36 steel yog suav tias yog cov khoom siv muaj zog rau kev siv cov qauv siv. Nws lub zog yog txhais los ntawm nws cov khoom siv kho tshuab:
* ** Yield Strength **: Yam tsawg kawg ntawm ** 250 MPa (36,000 psi) **. Qhov no yog qhov kev ntxhov siab uas cov hlau pib deform mus tas li, thiab nws yog cov cuab yeej tseem ceeb tom qab "36" hauv nws lub npe.
* ** Tensile Strength **: Ntau yam ntawm ** 400 txog 550 MPa (58,000 txog 80,000 psi) **. Qhov no yog qhov siab tshaj plaws uas cov hlau tuaj yeem tiv taus thaum ncab lossis rub ua ntej tawg.
Nws muaj qhov sib npaug zoo ntawm lub zog, ductility (nws tuaj yeem elongate los ntawm 20% lossis ntau dua ua ntej fracturing), thiab yooj yim ntawm fabrication, ua rau nws muaj ntau yam kev xaiv rau kev tsim kho thiab kev tsim khoom.
4. Cov hlau twg yog pheej yig dua?
Lo lus nug "qhov twg steel yog pheej yig dua" nyob ntawm cov qib tshwj xeeb raug muab piv. Feem ntau, nyob rau hauv tib qeb (xws li, carbon steel), tus nqi yog cuam tshuam los ntawm cov tshuaj muaj pes tsawg leeg thiab kev ua.
Kev sib piv ntau tuaj yeem ua tau ntawm **A36** thiab **SAE 1018**:
* ** A36 ** yog ** "tus qauv khoom" ** steel. Nws qhov kev faib tawm yog ua raws li kev ua tiav yam khoom siv yam tsawg kawg nkaus (xws li lub zog tawm los), nrog rau kev hloov pauv ntau dua hauv nws cov tshuaj muaj pes tsawg leeg.
** SAE 1018 ** yog ib tug ** "chemical composition" ** steel. Nws qhov kev faib tawm yog raws li cov ntsiab lus tshwj xeeb, tswj cov tshuaj (piv txwv li, carbon nyob ib ncig ntawm 0.18%).
5. Puas yog A36 pheej yig dua 1018?
Yog lawm, feem ntau ** A36 pheej yig dua 1018 ** . Qhov laj thawj tseem ceeb yog qhov sib txawv ntawm kev tswj ntau lawm. Vim tias A36 yuav tsum ua kom tau raws li lub hom phiaj ntawm cov cuab yeej cuab tam tab sis muaj kev hloov pauv ntau dua hauv nws cov tshuaj pleev ib ce, cov neeg tsim khoom siv tau ntau yam ntawm cov khoom siv raw thiab cov txheej txheem nruj me ntsis kom ua tiav lub zog uas yuav tsum tau ua, uas pab txo cov nqi tsim khoom. SAE 1018, nrog nws cov kev cai nruj nruj, feem ntau koom nrog ntau txoj kev tswj hwm thiab raug nqi ntau, ua rau tus nqi siab dua.
