SA 387 Qib 22 Chav Kawm 2yog chromium-molybdenum alloy steel phaj tsim rau siab- daim ntaub ntawv kub xws li boilers thiab siab hlab ntsha, muab siab tensile zog dua Class 1, weldability zoo, thiab zoo heev oxidation/corrosion kuj, nrog rau cov tseem ceeb muaj xws li ~ 2% Chromium thiab ~ 1% Molybdenum, muab normalized thiab tempered.
SA 387 GR.22 Qib sib npaug:
| BS | ASTM / ASME Cov | UNS | EN | DIN |
| 622-515B | A387/SA 387 | K21590 | 10 ZPO 910 | 10 ZPO 910 |
Lwm hom:
| ASME SA387 Qib 22 Alloy Steel Phaj Chaw tsim khoom | ASTM A387 2.25Cr-1Mo Steel Phaj Exporter |
| SA 387 GR.22 CL.2 Boiler Steel Phaj | SA 387 Qib 22 Chav Kawm 2 Steel Phaj Stockists |
| Alloy Steel ASTM A387 Qib 22 Chav Kawm 2 Phaj | Alloy Steel Phaj ASME SA 387 GR.22 CL.2 Dealer |
| SA 387 GR.22 CL.2 Phaj Manufacturers | Chrome Moly SA 387 GR.22 CL. 2 Plate Stockholder |
| High Quality SA 387 GR.22 CL.2 Phaj | Muaj SA 387 GR.22 CL.2 Phaj Tub luam hauv Is Nrias teb |
| SA 387 GR.22 CL.2 Steel Pressure Vessel Phaj | SA 387 GR.22 CL.2 Chrome Moly Phaj Distributor |
| SA 387 GR.22 CL.2 Boiler Phaj | Chromium{0}}Molybdenum Steel Phaj SA387 GR.22 CL.2 |
| SA 387 GR.22 CL.2 Kub Rolled Phaj | SA 387 Qib 22 CL.2 Alloy Steel HR Phaj |
Tshuaj muaj pes tsawg leeg ntawm SA387 GR.22 CL.2 Phaj
| C | Mn | P | S | Si | Cr | Mo |
| 0.04 - 0.15 | 0.25 - 0.66 | 0.035 | 0.035 | 0.5 max | 1.88 - 2.62 | 0.85 - 1.15 |
Mechanical Properties ntawm SA 387 GR.22 CL.2 Phaj
| Tensile zog | Yield zog | Elongationin 50mm (%) | Txo thaj tsam hauv% |
| 75-100 ksi, 515-690 MPa | 45 Ksi, 310 MPa | 18 | 45 |
Cov yam ntxwv tseem ceeb & kev ua haujlwm yam
Hom khoom: Chromoly (Chromium{0}}Molybdenum) Alloy Steel.
Kev siv thawj zaug: Cov hlab ntsha siab, boilers, kub exchangers nyob rau hauv siab -kub ib puag ncig (roj & gas, tshuaj ua).
Tshuaj muaj pes tsawg leegCov ntsiab lus tseem ceeb yog ~ 2.25% Chromium (Cr) thiab ~ 1% Molybdenum (Mo) rau corrosion / oxidation kuj, nrog tswj Carbon, Manganese, Phosphorus, thiab Sulfur.
Chav Kawm 2 Properties: Kev xav tau lub zog siab dua li Chav Kawm 1; Feem ntau 75-100 ksi tensile lub zog.
Yuav tsum tau kho: Yuav tsum tau ua kom sov sov (los yog normalized thiab tempered) thiab dhau mus kuaj ultrasonic thiab Charpy cuam tshuam kuaj (feem ntau ntawm -20℃lossis -46℃).
Hom kev tsim khoom & kev ua cov kauj ruam
Melting & Casting: Raw khoom melted thiab cam khwb cia rau hauv slabs.
Kub Rolling: Slabs yog kub dov rau hauv daim hlau ntawm qhov ntev (thickness, dav, ntev).
Kev kho cua sov: Cov kauj ruam tseem ceeb, feem ntau ua rau lub tshuab ua kom zoo dua qub thiab ua tiav cov khoom siv kho tshuab uas xav tau, txhim kho ductility thiab lub zog.
Kev Ntsuas & Kev Tshuaj Xyuas:
Tshuaj ntsuam xyuas: Txheeb xyuas qhov feem pua.
Mechanical Testing: Tensile, yield, thiab elongation tests.
Kev sim cuam tshuam: Charpy V-ntaus ntawv xeem rau toughness.
Kev Ntsuas Ultrasonic (UT): Txheeb xyuas qhov tsis zoo ntawm sab hauv.
Ua tiav & Cov ntaub ntawv: Deg prep, txiav, thiab kev npaj cov ntawv pov thawj Material Test (MTC) lees paub ua raws li ASME SA-387 Qib 22 Chav Kawm 2 tus qauv.
Cov txiaj ntsig tseem ceeb
Siab -Tsub Muaj Zog: Zoo heev tsis kam mus nkag ntawm qhov kub siab (txog ~ 550 degree).
Corrosion Resistance: Zoo tiv thaiv oxidation, pitting, thiab sulfide kev nyuaj siab tawg.
Weldability: Yooj yim weldable rau fabrication rau hauv complex qauv.
Core Industrial Applications
Petrochemical thiab Refining:Feem ntau siv nyob rau hauv hydroprocessing reactors, desulfurization khoom, thiab hloov kho rauv. Nws tsis kam mus rau "kua roj" (hydrogen sulfide) ua rau nws tseem ceeb rau cov roj crude hydrocracking.
Kev tsim hluav taws xob:Ua haujlwm nyob rau hauv ultra-supercritical thermal fais fab boilers rau cov khoom xws li lub taub hau lub taub hau, turbine casings, thiab nruas cov khoom uas yuav tsum tau nyiaj siab tshaj 25MPa.
Coal Chemical Kev Lag Luam:Siv rau gasifier shells thiab methanol synthesis yees uas cov cuab yeej yuav tsum tiv thaiv corrosive gases xws li CO thiab H₂S ntawm qhov kub ntawm 500-550 degree.
Nuclear zog:Pom nyob rau hauv nuclear reactor siab hlab ntsha thiab liquefied roj tso tsheb hlau luam vim nws lub zog tensile siab thiab hydrogen corrosion kuj.
Cov khoom siv tshwj xeeb
Cov nkoj siab:Thawj daim ntawv thov rau khaws cia thiab kho cov txheej txheem kev tshaj tawm nyob rau hauv siab.
Thaum tshav kub kub Exchangers:Siv dav hauv high -pressure heat exchangers rau thermal hloov hauv cov nroj tsuag tshuaj.
Piping Systems:suav nrog siab -kub ducting, flanges, li qub, thiab cov yeeb nkab clamps.
Industrial Infrastructure:Siv nyob rau hauv cov qauv siv rau kev txuas hniav, kev pab cuam offshore, thiab shipbuilding.
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.
SA 387 Qib 22 Chav Kawm 2 yog dab tsi?
Nws yog ib qho qis- alloy chromium-molybdenum steel phaj rau cov hlab ntsha siab, dav siv nyob rau hauv siab - kub thiab siab - ib puag ncig siab, ua raws li ASTM cov qauv, muab cov cua sov ua haujlwm zoo thiab weldability.
Lub ntsiab alloy muaj pes tsawg leeg ntawm cov hlau no yog dab tsi?
Nws cov khoom tseem ceeb yog hlau, 2.25% chromium, thiab 1% molybdenum. Cov ntsiab lus xws li carbon thiab manganese tau ntxiv los txhim kho cov khoom siv dag zog thiab kev ruaj ntseg
ASTM tus qauv twg tswj hwm SA 387 Qib 22 Chav Kawm 2?
Nws tau tswj hwm los ntawm ASTM A387 / A387M, tus qauv qhia qis- alloy steel daim hlau rau cov hlab ntsha siab ua haujlwm ntawm qhov kub thiab txias.
Qhov kev pabcuam siab tshaj plaws ntawm cov hlau no yog dab tsi?
Nws tuaj yeem ntseeg siab ua haujlwm ntawm qhov kub siab tshaj plaws ntawm kwv yees li 593℃(1100℃F), ua rau nws haum rau siab -kub muaj kev siv xws li boilers.
Dab tsi yog cov yam ntxwv ntawm cov khoom siv hauv chav tsev kub?
Yield zog Ntau tshaj los yog sib npaug rau 205 MPa, tensile zog 415-585 MPa, elongation Ntau tshaj los yog sib npaug rau 22%. Cov khoom no ua kom muaj peev xwm thauj khoom zoo hauv cov xwm txheej hnyav ..
Puas yog SA 387 Qib 22 Chav Kawm 2 weldable?
Yog, nws muaj zoo weldability. Preheating kom raug (150-200 degree) thiab tom qab vuam kev kho cua sov yog pom zoo kom tsis txhob txias tawg thiab txhim kho kev sib koom ua ke.
Dab tsi tom qab-weld kho cua sov (PWHT) yuav tsum tau?
Common PWHT yog tempering ntawm 620-675 degree, tuav rau lub sij hawm txaus los txo cov kev ntxhov siab, txhim khu ductility, thiab rov ua haujlwm tom qab vuam.
Dab tsi kev lag luam feem ntau siv cov qib steel no?
Nws yog dav siv hauv roj thiab roj, petrochemical, tsim hluav taws xob (boilers, turbines), thiab tshuaj ua lag luam rau cov hlab ntsha thiab cov kav dej.
Nws puas tuaj yeem siv rau hauv qhov chaw qis -qhov kub thiab txias?
Nws tsis yog qhov zoo tshaj plaws rau qhov kub qis dua -29 degree. Nws toughness txo qis ntawm qhov kub thiab txias; Lwm cov qib zoo li SA 387 Qib 11 yog qhov nyiam rau cov mob cryogenic
Qhov txawv ntawm Chav Kawm 1 thiab Chav Kawm 2 ntawm SA 387 Qib 22 yog dab tsi?
Chav Kawm 2 yuav tsum muaj kev ntsuam xyuas nruj dua (Charpy V-notch) dua li Chav Kawm 1, kom ntseeg tau tias muaj zog dua, tsim nyog rau kev thov siab dua - kub siab daim ntawv thov.