Taw Qhia: Thaum Cov Khoom Siv Hauv Kev Lag Luam ntsib qhov kub thiab txias, leej twg tiv thaiv kev nyab xeeb?
Hauv kev ua haujlwm hnyav xws li roj av refining, thermal zog tsim, thiab nuclear zog, kev ua tau zoo ntawm cov khoom siv ncaj qha cuam tshuam rau kev nyab xeeb ntawm kev tsim khoom thiab cov txiaj ntsig kev lag luam. Cov hlau tsoos zoo li soften, corrode, lossis txawm tawg nyob rau hauv qhov kub thiab txias. Qhov tshwm sim ntawmSA387Gr91CL2 steel phaj-featuring "siab-kub tsis kam, tiv thaiv- muaj peev xwm nkag, thiab muaj zog toughness"- tau dhau los ua "qhov kawg ntawm kev tiv thaiv" hauv kev lag luam. Kab lus no yuav txiav txim siab "genetic pleev" ntawm cov khoom siv no thiab qhia tias yog vim li cas nws tau dhau los ua qhov kev xaiv zoo tshaj plaws ntawm engineers thoob ntiaj teb.
SA387Gr91CL2 Steel Phaj: Los ntawm Cov Khoom Siv Tshuaj rau Kev Ua Haujlwm Zoo
Khoom siv "Genetic" Analysis
SA387Gr91CL2 kub- dov phaj yog chromium-molybdenum alloy hlau raws li tus qauv ASTM. Nws cov khoom tseem ceeb ntawm cov tshuaj muaj xws li:
- Chromium (Cr) (8.0% -9.5%): Txhim kho oxidation thiab corrosion kuj, tiv thaiv acidic media.
- Molybdenum (Mo) (0.85% -1.05%): Txhim kho siab - qhov kub thiab txias thiab inhibits creep deformation thaum lub sij hawm ntev - raug tshav kub.
- Vanadium (V) thiab Niobium (Nb): Txhim kho cov khoom siv los ntawm carbide / nitride nag lossis daus, nce tensile zog thiab toughness.
Cov cim qhia ua haujlwm tseem ceeb
- Siv tau qhov kub thiab txias:-29℃rau 600 degree
- Tensile zog Ntau dua los yog sib npaug rau 585 MPa, yield zog Ntau dua los yog sib npaug rau 415 MPa
- Lub zog cuam tshuam (-20 degree) Ntau dua lossis sib npaug rau 27 J, ua kom muaj kev ntseeg siab nyob rau hauv qis - qhov kub thiab txias ib puag ncig
Kev ua tau zoo zoo hauv kev sib piv
Piv nrog cov pa steel (piv txwv li, Q345R), SA387Gr91CL2 siab nkoj phaj muaj peb qhov zoo:
- 40% siab dua - qhov kub thiab txias: Ua kom muaj zog txhua yam khoom ntawm 600 degree, tiv thaiv deformation lossis tsis ua haujlwm.
- 5 × ntev creep lub neej: Nyob rau hauv lub sij hawm siab siab - qhov kev pab kub, nws deformation tsuas yog ib qho - tsib ntawm cov hlau zoo tib yam.
- Weldability zoo heev: Yuav tsum tau tsuas yog qis preheat kub (200℃-250 degree) thiab tsis muaj qhov nyuaj post-weld heat treatment, txo nqi fabrication.
Daim ntawv thov scenarios ntawm SA387Gr91CL2 Steel Phaj: Los ntawm Chav Ua Haujlwm mus rau Kev Lag Luam
"Lub plawv Cheebtsam" hauv Petrochemical Sector
- Hydrogenation reactors: Nyob rau hauv siab - kub (550℃), siab - siab (20 MPa), thiab hydrogen- ib puag ncig corrosive, reactors lined nrog SA387Gr91CL2 kub- dov phaj tuaj yeem ua haujlwm ruaj khov rau ntau tshaj 10 xyoo.
- Coking units: Tiv thaiv sulfide kev nyuaj siab corrosion tawg (SSCC), txo qis kev poob qis.
Lub "Energy Cornerstone" hauv Kev Lag Luam Fais Fab
- Ultra-cov boilers supercritical: Siv los tsim superheater thiab reheater raj uas tiv taus 620℃chav, pab fais fab nroj tsuag tshaj 45% thermal efficiency.
- Cov khoom siv hluav taws xob nuclear: Siv rau hauv cov kav dej loj ntawm cov kob nuclear, nws tsis kam mus rau neutron irradiation embrittlement ua kom muaj kev nyab xeeb ntawm cov nroj tsuag nuclear.
Muaj peev xwm siv tau rau hauv Emerging Fields
- Hydrogen zog cia thiab thauj: Muaj peev xwm tiv taus qhov kub tsis txias ntawm cov kua hydrogen (-253 degree) thiab siab -siab hydrogen embrittlement, ua rau nws yog ib qho tseem ceeb ntawm cov khoom siv hluav taws xob hydrogen.
- Aerospace: Siv nyob rau hauv lub foob pob hluav taws cav combustion chamber casings los tiv thaiv qhov cuam tshuam ntawm kev hloov pauv ultra-siab- kub gases.
cov ntsiab lus tseem ceeb kom tsis txhob muaj kev cuam tshuam
Peb lub ntsiab lus tseem ceeb kom tsis txhob muaj kev cuam tshuam thaum muab khoom
- Tshawb xyuas ASTM / ASME ntawv pov thawjkom tsis txhob "tsis yog-tus qauv re-rolled" cov khoom.
- Thov cov ntaub ntawv soj ntsuam thib peb - tog neeg(piv txwv li, SGS) los ntawm cov neeg xa khoom.
- Ua ntej cov tuam txhab lag luam uas muaj kev cai ua kom sov- muaj peev xwm kho taukom ua tau raws li kev ua haujlwm tshwj xeeb.
Yav tom ntej Outlook: SA387Gr91CL2 nyob rau hauv lub Tshiab-Cov Khoom Siv Revolution
Nrog rau txoj kev loj hlob ntawm "ntse thermal-txheej txheem thev naus laus zis" thiab "nano- cov txheej txheej ntxiv," SA387Gr91CL2 yuav tsum ua tiav:
- Kev pabcuam kub siab tshaj 650 degree, ua tau raws li qhov xav tau ntawm - tiam tom ntej ultra-supercritical units
- 30% ntev lub neej voj voog, txo cov nqi txij nkawm los ntawm kev hloov kho cov thev naus laus zis
- Green manufacturing: Txhim kho cov khoom seem- steel rov ua dua tus nqi rau 95%, txo qis cov pa roj carbon hneev taw
Xaus: Xaiv cov khoom zoo yog xaiv kev sib tw
SA387Gr91CL2 siab lub nkoj phaj tsis yog tsuas yog "cov cuab yeej" ntawm cov cuab yeej siv khoom lag luam tab sis kuj yog "tsis pom lub cav" rau kev txo nqi thiab txhim kho kev ua haujlwm. Nyob rau hauv kev ua haujlwm hnyav, txhua qhov kev ua tau zoo txhais tau tias qis dua qhov ua tsis tau zoo thiab cov khoom tsim tawm ntau dua. Yog tias koj tab tom nrhiav rau cov khoom siv uas sawv cev rau lub sijhawm sim, SA387Gr91CL2 yuav yog koj tus khub zoo tshaj plaws hauv kev kho dua tshiab.
Nyem kom tau txais cov qauv dawb
FAQ
Q: Cov khoom siv SA 387 yog dab tsi?
A: Lub siab zoo chrome molybdenum alloy steel phaj npaj tshwj xeeb rau kev siv hauv weldable carbon steel siab hlab ntsha ntawm qhov kub siab. Ntxiv molybdenum muab cov khoom siv kub tensile zog thiab chromium muab kev txhim kho corrosion.
Q: SA387 qib 11 sib npaug li cas?
A: Sa 387 Gr 11 Equivalent Materials yog ASME SA387 hauv Asmeskas kev lag luam nrog European Union muaj cov qauv hauv qib 13CrMoSi5-5. Sa 387 Gr 11 Cl 2 Equivalent Materials yog SA387-11-2 ntawm ASME thiab ASTM tus qauv.
Q: Qhov txawv ntawm SA387 Qib 11 Chav Kawm 1 thiab Chav Kawm 2 yog dab tsi?
A: Qhov txawv ntawm SA 387 Qib 11 Chav Kawm 1 thiab Chav Kawm 2 Phaj nyob hauv lawv cov khoom siv tshuab. Txawm li cas los xij, lawv ob leeg muaj tib yam tshuaj muaj pes tsawg leeg. Lub zog tensile thiab lub zog ntawm cov khoom siv hauv chav kawm 2 yog siab dua li ntawm chav kawm 1, qhov elongation rau chav kawm 1 yog siab dua piv rau chav kawm 2.
Q: Dab tsi yog qhov ntsuas kub rau SA 387 GR 11?
A: Nyob rau hauv qis kawg ntawm qhov kub ntawm SA 387 Gr 11 (1150℃F min tempering kub), thiab SA 387 Gr 22 (1250℃F min tempering kub) yog siv. Cov qib no tuaj yeem teev nyob rau hauv chav kawm 1 lossis 2 thiab tseem tuaj yeem muab rau hauv Normalized & Tempered lossis Quenched thiab Tempered.
Q: Cov khoom siv SA 387 GR 9 yog dab tsi?
A: SA 387 GR 9 yog ib qho chromium-molybdenum alloy steel dav siv nyob rau hauv siab- kev siv kub xws li cov hlab ntsha siab thiab cov cuab yeej tsim hluav taws xob thiab nws muab kev tiv thaiv zoo rau oxidation thiab nkag mus, ua rau nws zoo tagnrho rau lub sijhawm ntev - kev pabcuam ntawm qhov kub siab.
Q: Cov tshuaj muaj pes tsawg leeg ntawm SA 387 GR 22 yog dab tsi?
A: 22 CL. 2 phaj tshuaj muaj pes tsawg leeg suav nrog Chromium (Cr) 2%, Molybdenum (Mo) 1%, Manganese (Mn) 0.5%, Silicon (Si) 0.5%, Phosphorus (P) 0.03%, Sulfur (S) 0.03%, thiab Carbon (C) 0.1%.
Q: Cov khoom sib npaug ntawm SA 387 GR 12 yog dab tsi?
A: Sa 387 Gr 12 Cov khoom sib npaug tuaj yeem muab faib ua Asme SA 387 rau Asmeskas, rau European Union, qib sib npaug rau cov khoom siv no yog EN 13CrMo4-5. Hauv lub teb chaws Yelemees thiab Askiv, cov qib sib npaug yog DIN 13CRM044 thiab BS 620B, feem. Ntxiv rau qhov no, qib sib npaug rau Fabkis yog AFNOR 36206 15CD2.
Q: A387 Qib 5 yog dab tsi?
A: Lwm Cov Qauv. Lwm cov npe uas sib npaug rau AISI A387 qib 5-PVQ alloy steel suav nrog cov hauv qab no: ASME SA387 (5) ASTM A314 (502)
Q: Cov khoom siv SA 387 GR 5 yog dab tsi?
A: chrome molybdenum alloy steel phaj
SA387 GR 5 CLASS 2
Lub siab zoo chrome molybdenum alloy steel phaj npaj tshwj xeeb rau kev siv hauv weldable carbon steel siab hlab ntsha ntawm qhov kub siab. Ntxiv molybdenum muab cov khoom siv kub tensile zog thiab chromium muab kev txhim kho corrosion.
Peb cov khoom matrix mus dhau A387 / SA387, suav nrog ntau yam steel daim hlau qhia nyob rau hauv cov lus hauv qab no: siab -lub zog qis- alloy phaj rau qhov sib npaug ntawm lub zog thiab tawv, hnav- daim hlau tiv taus rau siab hnav, huab cua- cov phaj resistant rau kev laus thiab corrosion kuj, thiab marine daim hlau. Yog tias koj txaus siab rau txhua yam tshwj xeeb, thov hu rau kev sab laj.
Email:info@gneesteels.com
| Lwm cov hlau phaj | ||||
| Lub npe | Khoom siv | Specification (hli) | Tos | Lus ceeb toom |
| Tsawg Alloy | Q345A, Q345B, Q345C, Q345D, Q345E, Q390, Q420, Q460C, ST52-3, S355J2+N, SS400, SA302GrC, S275NL, 35CrMo | 6 - 350 | 5788.56 | Normalizing, tempered, tswj dov, kub dov, Kub dov, 1st tshuaj xyuas, 2nd tshuaj ntsuam, 3rd tshuaj ntsuam |
| Pressure Vessel Plate | Q245R, Q345R, Q370R, 16MnDR, 09MnNiDR, 15CrMoR, 14Cr1MoR, 12Cr2Mo1R, SA516Gr60, SA516Gr70, SA516Gr485, SAG281G, SAG281G SA387Gr22, P265,P295,P355GH,Q245R(R-HIC),Q345R(R{30}}HIC) | 3 - 300 | 8650 | Normalizing, tempered, tswj dov, kub dov, Kub dov, 1st tshuaj xyuas, 2nd tshuaj ntsuam, 3rd tshuaj ntsuam |
| Siab -Plate muaj zog | WH785D/E,Q960D/E,Q890D/E,WH60D/E,WH70B,Q550D,Q590D,Q690D/E | 8 - 120 | 3086.352 | Quenched thiab tempered |
| Hnav-Resistant Phaj | NM360, NM400, NM450, NM500 | 6 - 150 | 3866.297 | Quenched thiab tempered |
| Choj Phaj | Q235qC, Q345qC, Q370qC, Q420qC, Q345qDNH, Q370qDNH, A709 - 50F - 2, A709 - 50T - 2 | 8 - 200 | 2853.621 | Kub dov, normalized, kub dov tswj dov, quenched thiab tempered + toughness thiab brittleness |
