SA 387 Qib 12 Chav Kawm 2yog chromium-molybdenum alloy steel phaj raws li ASME SA 387 tus qauv, npaj rau kev nce siab -kub siab lub nkoj thiab boiler kev pab cuam. Nws muab qhov zoo siab - kub lub zog, nkag siab, thiab oxidation tsis kam, thiab feem ntau yog siv nyob rau hauv refineries, petrochemical nroj tsuag, thiab cov chaw tsim hluav taws xob. Chav Kawm 2 sawv cev rau kev kho cua sov zoo li qub thiab kho kom zoo dua qub thiab ductility.
SA 387 GR.12 Qib sib npaug:
| BS | ASTM/ASME | UNS | EN | DIN |
| 620B | A387/SA 387 | K11757 | 3 ZPO 45 | 13 ZPO 44 |
Lwm hom:
| ASME SA387 Qib 12 Alloy Steel Phaj Supplier | ASTM A387 1Cr-0.5Mo Steel Phaj Exporter |
| SA 387 GR.12 CL.2 Boiler Steel Phaj | SA 387 Qib 12 Chav Kawm 2 Steel Phaj Stockists |
| Alloy Steel ASTM A387 Qib 12 Chav Kawm 2 Phaj | Alloy Steel Phaj ASME SA 387 GR.12 CL.2 Dealer |
| SA 387 GR.12 CL.2 Phaj Manufacturers | Chrome Moly SA 387 GR.12 CL. 2 Plate Stockholder |
| High Quality SA 387 GR.12 CL.2 Phaj | Muaj SA 387 GR.12 CL.2 Phaj Tub luam hauv Is Nrias teb |
| SA 387 GR.12 CL.2 Steel Pressure Vessel Phaj | SA 387 GR.12 CL.2 Chrome Moly Phaj Distributor |
| SA 387 GR.12 CL.2 Boiler Phaj | Chromium{0}}Molybdenum Steel Phaj SA387 GR.12 CL.2 |
| SA 387 GR.12 CL.2 Kub Rolled Phaj | SA 387 Qib 12 CL.2 Alloy Steel HR Phaj |
Tshuaj muaj pes tsawg leeg ntawm SA387 GR.12 CL.2 Phaj
| C | Mn | P | S | Si | Cr | Mo |
| 0.04 - 0.17 | 0.35 - 0.73 | 0.035 | 0.035 | 0.13 - 0.45 | 0.74 - 1.21 | 0.4 - 0.65 |
Mechanical Properties ntawm SA 387 GR.12 CL.2 Phaj
| Tensile zog | Yield zog | Elongation hauv 200mm (%) | Elongation hauv 50mm (%) |
| 65-85 ksi, 450-585 MPa | 40 Ksi, 275 MPa | 19 | 22 |
ua
1. Kev npaj thiab txiav
Kev Tshawb Fawb: Kev lees paub cov lej kub thiab tshuaj lom neeg muaj pes tsawg leeg (Cr / Mo cov ntsiab lus) kom ntseeg tau tias chav kawm 2 tensile yuav tsum.
Txoj kev txiav: Siab- txiav txiav siv Nplaim (Oxy- roj), Plasma, lossis dej- dav hlau txoj kev.
Preheating rau Txiav: Vim lub hardenability ntawm chrome-moly steel, daim hlau thicker tshaj 25 hli feem ntau yuav tsum tau preheating (kwv yees . 100℃-150 degree) ua ntej nplaim taws txiav los tiv thaiv ntug tawg.
2. Tsim thiab Machining
Cold/Hot forming: Cov phaj yog dov rau hauv lub tog raj kheej los yog nias rau hauv cov tais diav (taub hau) rau cov hlab ntsha siab.
Ntug Kev Npaj: Beveling (V, U, lossis J hom) yog ua los ntawm machining lossis sib tsoo.
Kev soj ntsuam saum npoo: Kev Ntsuas Penetrant (PT) lossis Kev Ntsuas Sib Nqus Particle (MT) feem ntau ua rau ntawm cov npoo beveled los xyuas cov laminations lossis tawg.
3. Vuam txheej txheem (Tib kauj ruam tseem ceeb)
SA 387 Qib 12 Chav Kawm 2 yuav tsum muaj kev tswj xyuas tshwj xeeb los tswj nws cov khoom:
Preheating: Yuav tsum tau preheating (feem ntau yog 150℃mus rau 200 degree) yog yuav tsum tau kom tsis txhob hydrogen -induced cracking.
Filler Metals: Siv qis-hydrogen electrodes sib piv cov hlau hauv paus, xws li E8018-B2 (SMAW) lossis ER80S-B2 (GTAW/GMAW).
Interpass Kub: Yuav tsum tau saib xyuas thiab tswj tsis pub dhau qhov kev txwv (feem ntau tsis tshaj 300 degree) txhawm rau khaws cov qauv nplej.
4. Kev kho cua sov
Qhov kev xaiv "Class 2" yog ua tiav los ntawm cov txheej txheem thermal:
Normalization & Tempering (N + T): Cov khoom siv txheem. Qhov tsawg kawg nkaus tempering kub rau Qib 12 yog 1150℃F (620 degree).
Ncej -Kev Kho Hniav Kub Kub (PWHT): Qhov tseem ceeb tom qab kev tsim kho kom txo tau cov kev ntxhov siab uas seem. Qhov no feem ntau ua tiav ntawm 650℃- 700℃rau lub sijhawm txiav txim siab los ntawm cov khoom tuab.
5. Tsis yog -Kev Ntsuam Xyuas Kev Puas Tsuaj (NDT) & Kev Tswj Xyuas Zoo
Volumetric Inspection: 100% Ultrasonic Testing (UT) los yog Radiographic Testing (RT) kom ntseeg tau tias kev ncaj ncees ntawm cov welds thiab cov khoom siv hauv paus.
Mechanical Testing: Tensile tests (kom paub meej tias Chav Kawm 2 ntau ntawm 65–85 ksi), Kev xeem tawm (min 40 ksi), thiab Charpy V-Kev ntsuas qhov cuam tshuam.
Kev Ntsuas Hardness: Ua kom ntseeg tau tias PWHT ua tiav thiab cov khoom tsis dhau nkig.
6. Ua tiav
Kev Tiv Thaiv Ntog: Kev tawg thiab txheej nrog siab -kub resistant primers.
Cov ntaub ntawv: Tshaj tawm Daim Ntawv Qhia Txog Cov Khoom Siv (MTR) suav nrog kev tshuaj xyuas tshuaj, kab kos kev kho cua sov, thiab cov txiaj ntsig NDT.
Vim li cas thiaj xaiv peb:
Koj tuaj yeem tau txais cov khoom zoo meej raws li qhov koj xav tau ntawm tus nqi tsawg kawg nkaus.
Peb kuj muab Reworks, FOB, CFR, CIF, thiab qhov rooj rau qhov rooj tus nqi xa khoom. Peb xav kom koj ua deal rau shipping uas yuav zoo heev.
Cov ntaub ntawv uas peb muab yog muaj tseeb tiag, txoj cai los ntawm raw cov ntaub ntawv xeem daim ntawv pov thawj mus rau qhov kawg dimensional nqe lus.
Peb lav muab cov lus teb tsis pub dhau 24 teev (feem ntau hauv tib lub sijhawm)
Koj tuaj yeem tau txais cov khoom hloov pauv, zeb xa khoom nrog txo lub sijhawm tsim khoom.
Peb tau mob siab rau peb cov neeg siv khoom. Yog tias nws yuav tsis tuaj yeem ua tau raws li koj cov kev xav tau tom qab kuaj xyuas tag nrho cov kev xaiv, peb yuav tsis ntxias koj los ntawm kev cog lus tsis tseeb uas yuav tsim kev sib raug zoo rau cov neeg siv khoom.
daim ntawv thov
Core Industrial Sectors
Roj, Roj, thiab Petrochemicals:Qhov no yog thawj qhov chaw thov. Nws yog siv rau cov khoom siv refinery, cais cov hlab ntsha, thiab cov tank cia rau siab - cov pa roj. Nws cov ntsiab lus chromium muab kev ua haujlwm zoo heev rau kev pabcuam qaub(ib puag ncig uas muaj 𝐻2𝑆).
Kev tsim hluav taws xob:Qhov tseem ceeb rau industrial boilers, boiler drums, thiab chav pipelines. Nws kuj tseem siv tau hauv Cov Hluav Taws Xob Hluav Taws Xob Hluav Taws Xob (HRSG)thiab cov khoom siv rau ob qho tib si roj thiab chav turbines.
Nuclear Zog:Siv nyob rau hauv fabrication ntawm nuclear reactor siab hlab ntshathiab lwm yam kev sib pauv cua sov vim nws cov neeg kho tshuab kev ntseeg siab ntawm qhov kub thiab txias.
Kev ua tshuaj lom neeg:Siv rau reactorsthiab cov hlab ntsha siab uas tuav cov xov xwm corrosive thiab liquefied petroleum.
Tshwj xeeb Cheebtsam
Tshaj li cov nkoj loj, SA 387 Qib 12 Chav Kawm 2 tau ua tiav rau ntau qhov tseem ceeb:
Kub Hloov:Kub exchangers, condensers, thiab superheaters.
Piping Systems:Siab -kub ducting, yeeb nkab txhawb nqa, thiab loj - txoj kab uas hla cov yeeb nkab ua haujlwm.
Hardware Fittings:Tshwj xeeb li qub, flanges, yeeb nkab clamps, thiab fittings.
Cia & Thauj:Oxygen cylinders thiab cov khoom siv hlau loj loj.
Lwm Cov Kev Siv Hluav Taws Xob
Aerospace & Kws muaj txuj ci:Tub rog tsheb, naval ships, thiab aircraft Cheebtsam vim nws tsis kam mus thermal qaug zog.
Mining & Kev Tsim Kho:Liners rau chutes, tubs, thiab bins, nrog rau cov cuab yeej tshwj xeeb xws li arcoplate cyclones.
Kev tsim khoom:Siv rau hauv cov nroj tsuag chiv, cov ntawv zeb, thiab cov cement industries rau siab - cov cuab yeej ua haujlwm nyuaj.
Yog xav paub ntxiv txog GNEE cov khoom siv hlau, tiv tauj peb ntawm beam@gneesteelgroup.com. Peb tos ntsoov yuav ua haujlwm nrog koj.
Dab tsi yog qhov modulus ntawm elasticity ntawm qib no?
Nws cov qauv ntawm elasticity yog li ntawm 200 GPa (29 × 10⁶ psi) ntawm chav tsev kub, zoo ib yam nrog rau qis tshaj - alloy steels rau cov qauv tsim.
SA 387 Qib 12 Chav Kawm 2 puas tuaj yeem tsim los ntawm kev khoov?
Yog, nws tuaj yeem khoov nrog cov txheej txheem kom raug. Preheating tej zaum yuav xav tau rau cov ntu tuab kom tsis txhob tawg, thiab khoov lub vojvoog yuav tsum tau tswj.
Dab tsi yog qhov kev pab cuam lub neej ntawm cov khoom siv no hauv cov ntawv thov raug?
Nrog kev tu thiab kev ua haujlwm kom zoo, nws tuaj yeem ua haujlwm 20 txog 30 xyoo. Kev pabcuam lub neej nyob ntawm qhov kub, siab, thiab corrosiveness ntawm qhov chaw ua haujlwm.
Dab tsi yog qhov siab tshaj plaws thickness muaj rau SA 387 Qib 12 Chav Kawm 2 daim hlau?
Cov phaj muaj txog li 200 hli (7.87 nti) tuab. Cov phaj tuab yuav xav tau kev kho cua sov tshwj xeeb kom ntseeg tau tias cov khoom siv kho tshuab tsis sib xws.
Puas yog SA 387 Qib 12 Chav Kawm 2 sib nqus?
Yog, nws yog ferromagnetic. Raws li qhov qis- alloy steel, nws khaws cov khoom sib nqus ntawm chav tsev kub, uas yog qhov tseem ceeb rau kev sim tsis yog - puas tsuaj.
Dab tsi tsis yog -kev kuaj kev puas tsuaj (NDT) txoj kev siv rau cov khoom no?
Cov txheej txheem NDT feem ntau suav nrog kev kuaj ultrasonic (UT), kuaj hluav taws xob (RT), thiab kuaj cov hlau nplaum sib nqus (MT) txhawm rau txheeb xyuas qhov teeb meem sab hauv thiab saum npoo.
Cov khoom no puas tuaj yeem normalized?
Yog, normalization yog ib qho kev kho cua sov. Nws suav nrog cua sov rau 899℃txog 954℃(1650℃F txog 1750℃F) thiab cua txias los ua kom cov qauv nplej.
Qhov txawv ntawm Chav Kawm 1 thiab Chav Kawm 2 ntawm SA 387 Qib 12 yog dab tsi?
Chav Kawm 2 muaj kev txwv nruj dua qhov yuav tsum tau ua kom nruj dua li Chav Kawm 1. Nws yog qhov tsim nyog rau cov kev pabcuam hnyav dua nrog kev ntxhov siab thiab kub hloov pauv.
Cov khoom no puas tuaj yeem siv rau hauv cov roj thiab roj refineries?
kiag li. Nws yog dav siv nyob rau hauv cov roj thiab roj refineries rau reactors, boilers, thiab tshav kub exchangers, enduring siab kub thiab corrosive xov xwm.
Lub melting point range ntawm SA 387 Qib 12 Chav Kawm 2 yog dab tsi?
Nws melting point ranges ntawm 1427℃mus rau 1455℃(2600℃F txog 2650℃F). Qhov siab melting point no txhawb nws siv nyob rau hauv siab - daim ntawv thov kub.
Cov khoom no puas xav tau kev tiv thaiv corrosion?
Nws nyob ntawm ib puag ncig. Nyob rau hauv cov mob me, nws tiv thaiv corrosion, tab sis nyob rau hauv hnyav corrosive xov xwm, coatings los yog hauv ob sab phlu tej zaum yuav xav tau kom ntev kev pab cuam lub neej.