Yam cuam tshuam rau tus nqi ntawm SA387 Qib 22 Chav Kawm 2
SA387 Qib 22 Chav Kawm 2yog qib tshwj xeeb ntawm chrome-molybdenum (Cr-Mo) alloy steel phaj tsim los rau siab - kub thiab siab - kev pabcuam siab. Nws feem ntau yog siv rau hauv kev tsim cov hlab ntsha siab, boilers, thiab reactors hauv kev lag luam xws li roj refineries, petrochemical nroj tsuag, thiab lub zog tsim.
Tus nqi ntawm SA387 Qib 22 Chav Kawm 2 tsis raug kho thiab hloov pauv raws li kev sib koom ua ke ntawm kev lag luam thoob ntiaj teb thiab cov kev xav tau tshwj xeeb.
1. Raw Material & Ntiaj teb no Market Factors
Tus nqi ntawm Alloying Elements:Tus nqi ntawm chromium thiab molybdenum ntawm London Hlau Txauv (LME) lossis cov kev lag luam zoo sib xws yog tus thawj tsav tsheb. Kev lag luam volatility ncaj qha cuam tshuam tus nqi hauv paus.
Hlau Scrap & Hlau Ore Nqe:Raws li cov khoom lag luam, nws tus nqi yog khi rau dav hlau ua cov khoom siv raw khoom.
Ntiaj teb no Supply & Demand:Kev thov siab los ntawm cov haujlwm xws li lub zog (roj & roj, tsim hluav taws xob) thiab cov khoom muag qis tuaj yeem ua rau tus nqi nce. Kev lag luam qeeb qeeb hauv cov haujlwm no tuaj yeem txo qhov kev thov thiab tus nqi.
Ntshuam/Export Duties & Tariffs:Kev lag luam cov cai, xws li tiv thaiv- cov dej num pov tseg hauv ntau lub tebchaws, tuaj yeem hloov pauv cov nqi ntawm cov khoom siv los ntawm cov mills txawv teb chaws.
2. Mill-Cov khoom lag luam muaj feem cuam tshuam
Mill Source & Brand:Hwm mills los ntawm cov neeg tsim khoom tsim (xws li, hauv Tebchaws Europe, Nyiv, lossis Asmeskas) hais kom tus nqi siab dua li cov khoom siv los ntawm lwm qhov chaw, qhia txog kev lees paub zoo, ntawv pov thawj, thiab lub koob npe nrov.
Phaj Dimensions:Thickness thiab dav yog qhov tseem ceeb. Cov phaj tuab dua thiab ntxiv - cov phaj dav yog kim dua vim yog cov txheej txheem dov ntau dua, cov peev txheej zeb tsawg, thiab siv cov khoom siv ntau dua.
Ntim (Volume):Kev txiav txim loj dua feem ntau ruaj ntseg tus nqi qis dua ib tuj / kg vim kev lag luam ntawm nplai rau lub zeb lossis tus xa khoom.
Kev kho cua sov: SA387 Qib 22 Chav Kawm 2 tshwj xeeb yuav tsum tau Normalizing & Tempering (N&T). Tus nqi ntawm qhov tseeb, lub zog- lub voj voog kub hnyav yog ua rau tus nqi. Chav kawm 1 (annealed) cov khoom siv feem ntau pheej yig dua.
3. Kev yuav khoom-Tshwj xeeb & Logistics Factors
Certification & Test Requirements:Standard Mill Test Reports (MTRs) suav nrog. Txawm li cas los xij, yuav tsum tau kuaj ntxiv (piv txwv li, kev sim cuam tshuam ntxiv, kev tshuaj xyuas UT, thib peb- ntawv pov thawj tog) ntxiv tus nqi.
Processing & Delivery:Yog tias tus neeg muag khoom muab tus nqi - ntxiv cov kev pabcuam xws li txiav rau qhov loj me, kev npaj ntug (beveling), lossis priming, qhov no ua rau tus nqi nce ntxiv. Qhov chaw xa khoom thiab cov nqi thauj khoom kuj tseem ceeb ntxiv -ons.
Lub Sijhawm Lead:Xav tau cov khoom los ntawm cov khoom lag luam (ex-warehouse) feem ntau yog tus nqi them. Kev txiav txim rau yav tom ntej zeb ntau lawm (nrog sij hawm ntev txhuas) tuaj yeem pheej yig dua.
Summary of Key Cost Drivers:
| Siab -Level Factor | Tus nqi tshwj xeeb tsav tsheb |
|---|---|
| Khoom Muag Khoom | Nqe ntawm Cr, Mo, seem, thiab hlau ore; Ntiaj teb kev muab khoom / kev thov. |
| Khoom Specifications | Phaj thickness & dav; N&T kev kho cua sov (Class 2). |
| Tau qhov twg los & Zoo | Mill hom / keeb kwm; Yuav tsum tau ntawv pov thawj & kuaj. |
| Order Logistics | Kev yuav ntim; Cov kev pabcuam ua haujlwm; Delivery & freight. |
Nyob rau hauv qhov tseeb, ib tug tuab, ntxiv - dav phaj ntawm ntawv pov thawj SA387 Gr 22 Cl 2 los ntawm ib tug hwm European zeb, txiav txim nyob rau hauv ib tug me me kom muaj nuj nqis nrog ceev tus me nyuam thaum lub sij hawm ib tug siab molybdenum nqi, yuav nyob rau hauv lub siab tshaj plaws kawg ntawm cov nqi spectrum. Hloov pauv, tus qauv- loj phaj los ntawm cov khoom lag luam hauv cov ntim loj thaum lub lag luam qis yuav ua rau muaj kev lag luam ntau dua. Cov neeg yuav khoom yuav tsum qhia meej meej lawv cov kev xav tau thiab kev lag luam kom tau txais cov lus qhia meej.
1. SA387 Qib 22 Chav Kawm 2 yog dab tsi?
SA387 Qib 22 Chav Kawm 2 yog ib qho kev qhia tshwj xeeb rau chromium-molybdenum alloy steel daim hlau feem ntau siv hauv cov hlab ntsha siab thiab lwm yam siab - cov ntawv thov kev pabcuam kub.
2. Cov tshuaj muaj pes tsawg leeg ntawm SA387 Qib 22 Chav Kawm 2 yog dab tsi?
Nws muaj pes tsawg leeg muaj xws li chromium (2.00-2.50%), molybdenum (0.90-1.10%), nrog carbon, manganese, phosphorus, sulfur, thiab silicon ua cov seem.
3. Dab tsi yog cov khoom siv kho tshuab ntawm SA387 Gr 22 Cl 2?
Cov khoom tseem ceeb muaj xws li lub zog tensile yam tsawg kawg nkaus ntawm 515 MPa (75 ksi) thiab qhov tsawg kawg nkaus yield zog ntawm 310 MPa (45 ksi) rau cov phaj siab tshaj 65 hli tuab.
4. Qhov txawv ntawm SA387 Qib 22 Chav Kawm 1 thiab Chav Kawm 2 yog dab tsi?
Thawj qhov sib txawv yog kev kho cua sov; Cov khoom siv hauv chav kawm 2 yuav tsum tau muab nkag rau hauv cov xwm txheej zoo li qub thiab kub ntxhov, thaum Chav Kawm 1 tsis muaj qhov yuav tsum tau ua, cuam tshuam rau nws lub zog thiab microstructure.
5. Qhov kev pabcuam siab tshaj plaws rau SA387 Qib 22 yog dab tsi?
SA387 Qib 22 feem ntau yog siv rau kev pabcuam kub txog li 550℃(1022℃F), tab sis cov kev txwv tshwj xeeb yog nyob ntawm qhov siab thiab kev ntxhov siab.
6. Puas yog SA387 Qib 22 Chav Kawm 2 sib npaug rau lwm qib khoom siv?
Yog lawm, nws yog dav sib npaug rau ASTM A387 Gr22 Cl2, ASME SA387 Gr22 Cl2, thiab cov khoom siv wrought qib UNS K21590.
7. Yuav ua li cas rau vuam SA387 Qib 22 Chav Kawm 2 hlau?
Vuam feem ntau yuav tsum tau ua ntej- cua sov thiab tom qab-weld heat treatment (PWHT). Common filler metals muaj xws li AWS E9015-B3 rau SMAW lossis cov qhab nia sib raug rau lwm cov txheej txheem kom phim lub hauv paus hlau cov khoom.
8. Kev kho cua sov rau SA387 Gr22 Cl2 yog dab tsi?
SA387 Qib 22 Chav Kawm 2 daim hlau tau muab tso rau hauv qhov qub (ntawm 1650-1750℃F) thiab tempered (ntawm 1250-1350℃F) mob kom ua tiav cov khoom siv kho tshuab.
9. Qhov twg yog SA387 Qib 22 Chav Kawm 2 nquag siv?
Nws yog dav siv nyob rau hauv fabrication ntawm siab hlab ntsha, boilers, thiab reactors rau lub hwj chim tiam, petrochemical, thiab roj & roj industries, tshwj xeeb tshaj yog rau cov khoom raug kub thiab siab.
10. Dab tsi yog qhov yuav tsum muaj hardness rau SA387 Qib 22 Chav Kawm 2?
Txawm hais tias ASTM / ASME specification tsis txwv ib qho nyuaj, nws feem ntau tswj tau thaum kho cua sov. Ib qho kev xav tau hauv kev pabcuam yog kom muaj qhov siab tshaj plaws, feem ntau 225 Brinell (HBW) lossis qis dua, txhawm rau tiv thaiv cov teeb meem xws li hydrogen-induced cracking.
Tag nrho cov specification thiab cov ntsiab lus muaj nyob rau ntawm kev thov. Cov ntaub ntawv saum toj no yog muab rau kev taw qhia nkaus xwb. Rau kev tsim tshwj xeeb thov hu rau peb cov neeg ua haujlwm muag khoom.
