A387 Qib 22 Chav Kawm 2yog ib hom alloy steel phaj tsim los siv rau hauv cov hlab ntsha siab uas txhim kho toughness thiab creep kuj yuav tsum tau nyob rau hauv siab kub. Nws belongs rau chromium-molybdenum steel tsev neeg, muab kev ruaj ntseg zoo thiab tiv thaiv hydrogen nres nyob rau hauv siab - qhov kub thiab txias qhov chaw. Qib no feem ntau yog ua haujlwm nyob rau hauv cov khoom siv refinery, petrochemical processing units, thiab cov tshuab tsim hluav taws xob uas txhim khu kev qha hauv thermal stress yog qhov tseem ceeb. Cov khoom siv yog tsim los ua kom tau raws li cov kev xav tau ntawm cov cuab yeej cuab tam thiab tsim nyog rau kev tsim los ntawm cov txheej txheem vuam.
Sib npaug rau ASTM A387 Qib 22 Alloy Steel Phaj
| BS | EN | ASTM / ASME Cov | DIN |
| 622-515B | 10 ZPO 910 | A387-22-2 | 10 ZPO 910 |
Specifications rau ASTM A387 Qib 22 Alloy Steel Phaj
| Lub npe | Nominal Chromium Cov ntsiab lus (%) |
Nominal Molybdenum Cov ntsiab lus (%) |
| A387 Qib 22 | 2.25% | 1.00% |
Tensile Requirements rau ASTM A387 Qib 22 Alloy Steel Phaj Class 2 Phaj
| Lub npe: | Yuav tsum tau: | Qib 22 |
| A387 Qib 22 | Tensile zog, ksi [MPA] | 75 txog 100 [515 rau 690] |
| Yield zog, min, ksi [MPa] / (0.2% offset) | 45 [310] | |
| Elongation hauv 8 nti. [200mm], min % | ... | |
| Elongation hauv 2 nti. [50mm], min, % | 18 | |
| Txo thaj tsam, min% | 45 ( ntsuas ntawm cov qauv puag ncig) 40 ( ntsuas ntawm cov qauv tiaj tus) |
Cov Khoom Siv Tshuaj Rau ASTM A387 Qib 22 Alloy Steel Phaj
| Element | Chemical Composition (%) | |
| A387 Qib 22 | ||
| Cov pa roj carbon: | Kev Ntsuas Kub: | 0.05 - 0.15 |
| Product Analysis: | 0.04 - 0.15 | |
| Manganese: | Kev Ntsuas Kub: | 0.30 - 0.60 |
| Product Analysis: | 0.25 - 0.66 | |
| Phosphorus: | Kev Ntsuas Kub: | 0.035 |
| Product Analysis: | 0.035 | |
| Sulfur (max): | Kev Ntsuas Kub: | 0.035 |
| Product Analysis: | 0.035 | |
| Silicon: | Kev Ntsuas Kub: | 0.50 max |
| Product Analysis: | 0.50 max | |
| Chromium: | Kev Ntsuas Kub: | 2.00 - 2.50 |
| Product Analysis: | 1.88 - 2.62 | |
| Molybdenum: | Kev Ntsuas Kub: | 0.90 - 1.10 |
| Product Analysis: | 0.85 - 1.15 |
Daim ntawv thov
Roj & Roj Kev Lag Luam: Nws yog dav siv rau kev tsim cov hlab ntsha siab, cov kav dej, thiab cov khoom siv tseem ceeb rau qaub (sulfide-muaj) cov kev pabcuam. Cov khoom no ua haujlwm nyob rau hauv qhov hnyav downhole thiab upstream ib puag ncig, qhov uas lawv tiv taus siab, hloov pauv kub, thiab corrosive sulfide media. Nws tiv thaiv hydrogen sulfide corrosion ua kom muaj kev nyab xeeb kev thauj mus los thiab ua cov roj av thiab cov nkev, kom tsis txhob muaj cov khoom siv tsis ua haujlwm nyob rau hauv siab -kev pheej hmoo ntawm kev rho tawm thiab kis tau tus mob.
Chemical & Petrochemical Cog: Nws yog cov khoom xaiv rau cov reactors, cov kab distillation, thiab lwm yam khoom siv ua haujlwm uas ua rau siab siab - cua sov thiab cov tshuaj lom neeg hnyav. Nws lub peev xwm los tiv thaiv thermal degradation thiab tshuaj yaig ua rau nws zoo tagnrho rau kev tuav cov hydrocarbons, cov kuab tshuaj, thiab cov tshuaj reactive intermediates nyob rau hauv cov txheej txheem tas mus li, xws li ethylene cracking thiab refining hauj lwm.
Lub zog tiam: Nws yog feem ntau siv rau hauv boilers, cua sov rov qab lub tshuab hluav taws xob (HRSGs), thiab cov khoom tseem ceeb ntawm cov chaw nres tsheb thermal. Cov khoom no ua haujlwm nyob rau hauv kev ntxhov siab heev (feem ntau nyob rau hauv cyclic cua sov thiab cua txias), thiab cov khoom zoo heev creep kuj ua kom ruaj khov kev ua tau zoo nyob rau hauv lub sij hawm ntev -lub sij hawm siab - kub ua hauj lwm, txhawb zog npaum hloov dua siab tshiab thiab txo cov kev pheej hmoo ntawm thermal qaug zog.
Thaum tshav kub kub Exchangers: Nws yog dav siv nyob rau hauv tshav kub exchangers thoob chemical, petrochemical, thiab fais fab sectors. Nws ua kom yooj yim hloov pauv cov cua sov ntawm qhov kub thiab txias thaum tswj cov txheej txheem kev ncaj ncees txawm tias raug hloov pauv cov xov xwm kub thiab txias. Qhov kev ruaj ntseg no yog qhov tseem ceeb rau kev ua kom zoo dua cov txheej txheem hauv kev siv xws li pov tseg cov cua sov rov qab thiab cov khoom siv tshuaj txias.
Muaj boilers: Nws ua haujlwm nyob rau hauv cov boilers muaj, qhov twg cov khoom xws li raj, headers, thiab shells yog tsim los rau siab kub kev pab cuam. Nws lub cev muaj zog ruaj khov ua kom ntseeg tau tias kev ua haujlwm ruaj khov nyob rau hauv siab - lub zog ua haujlwm siab, txo qis lub sijhawm tsis tau npaj tseg thiab txo qis dua - lub sijhawm tu cov nqi rau kev tsim khoom thiab cov khoom siv cua sov.
Qhov zoo
Siab -Tsub Muaj Zog: Nws tuav lub zog tshwj xeeb thiab tiv taus qhov deformation ntawm qhov kub siab (txog li 600 degree). Cov cuab yeej no yog qhov tseem ceeb rau cov khoom siv ua haujlwm nyob rau hauv kev ua haujlwm siab - ib puag ncig cua sov, tiv thaiv qhov hloov pauv thiab ua kom muaj kev ruaj ntseg ntawm cov txheej txheem ntawm kev ua haujlwm ntev.
Corrosion & Oxidation Resistance: Nws cov ntsiab lus chromium txhim khu kev tiv thaiv oxidation thiab corrosion, tshwj xeeb tshaj yog nyob rau hauv qaub (sulfide{0}} nplua nuj) thiab siab - av noo ib puag ncig. Qhov no txo cov khoom degradation, ncua cov cuab yeej siv lub neej, thiab tshem tawm qhov xav tau kev hloov pauv ntau zaus hauv kev lag luam hnyav.
Weldability zoo: Nws tuaj yeem nkag tau yooj yim welded siv cov txheej txheem kev lag luam yam tsis muaj preheating ntau dhau los yog tom qab-weld heat treatment, txhim kho fabrication efficiency. Qhov no versatility tso cai rau hloov tau yooj yim tsim thiab sib dhos ntawm complex Cheebtsam, txo lub sij hawm ntau lawm thiab cov nqi.
Siab Tensile zog: Muab piv rau cov pa roj carbon steel, nws muaj cov khoom siv zoo tshaj plaws, nrog rau cov tensile ntau dua thiab cov khoom muaj zog. Qhov no ua rau kev tsim cov khoom sib zog, sib zog ua haujlwm ntau yam tsis muaj kev cuam tshuam cov khoom thauj -cov kabmob muaj peev xwm, ua kom qhov chaw siv tau zoo hauv cov chaw tsim khoom.
Durability: Nws muab kev ua haujlwm ntev - ua haujlwm tau ntev hauv kev xav tau, xws li kev hloov pauv kub, kev kub siab, thiab tshuaj lom neeg raug. Nws lub cev muaj zog txo qis cov kev xav tau ntawm kev saib xyuas thiab ua kom muaj kev ntseeg tau ntawm kev ua haujlwm zoo ib yam, ua rau nws tus nqi - kev xaiv zoo rau cov ntawv thov kev lag luam tseem ceeb.
Chav Kawm 2 Tshwj xeeb zoo: Muab piv rau Chav Kawm 1, Chav Kawm 2 yuav tsum muaj zog tensile ntau dua thiab muaj kev cuam tshuam toughness ( ntsuas los ntawm Charpy V- ntsuas ntsuas). Qhov no ua rau nws tsim nyog rau cov ntawv thov tseem ceeb dua qhov twg cov khoom tsis ua haujlwm tuaj yeem ua rau muaj kev nyab xeeb lossis raug kaw, xws li siab - cov hlab ntsha siab thiab cov khoom siv hluav taws xob tseem ceeb.
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.
Tiv tauj peb ntawm beam@gneesteelgroup.com rau tus nqi, kev txhawb nqa, lossis kev daws teeb meem. Peb yeej ib txwm npaj los txhawb koj qhov project.
Dab tsi yog qhov tsawg kawg nkaus tensile lub zog ntawm A387 Qib 22 Chav Kawm 2 raws li cov qauv ASTM?
Raws li ASTM A387, nws lub zog tensile yam tsawg kawg nkaus yog 415 MPa (60,000 psi), thiab qhov tsawg kawg nkaus lub zog tawm mus txog 205 MPa (30,000 psi), ua tau raws li cov txheej txheem rau kev siv lub nkoj siab.
Dab tsi yog qhov txiaj ntsig tseem ceeb ntawm A387 Qib 22 Chav Kawm 2 tshaj cov hlau hauv siab - qhov kub thiab txias?
Piv nrog cov pa roj carbon steel, nws muaj kev nkag tau zoo dua thiab oxidation tsis kam ntawm qhov kub siab, tsis txhob deformation thiab degradation ntev - kev pab cuam lub sij hawm, yog li ua kom ruaj khov kev ua tau zoo nyob rau hauv siab - qhov kub thiab txias scenarios.
Dab tsi ntawm cov khoom feem ntau yog tsim los ntawm A387 Qib 22 Chav Kawm 2?
Cov khoom sib xyaw ua los ntawm nws muaj xws li cov hlab ntsha siab, lub taub hau, flanges, cov khoom siv hluav taws xob kub thiab cov kav dej, txhua yam tsim los rau siab - kub thiab siab - kev ua haujlwm siab.
Puas yog A387 Qib 22 Chav Kawm 2 xav tau kev tiv thaiv corrosion hauv ib puag ncig tshwj xeeb?
Nws tiv taus oxidation thiab corrosion me me nyob rau hauv siab - kub gases, tab sis nyob rau hauv aggressive media xws li acidic los yog chloride - nplua nuj ib puag ncig, yuav tsum tau ntxiv kev tiv thaiv xws li cladding los yog txheej.
Tus qauv twg tswj hwm qhov tshwj xeeb ntawm A387 Qib 22 Chav Kawm 2?
Nws cov lus qhia tshwj xeeb yog tswj hwm los ntawm ASTM A387, tus qauv tshwj xeeb tsim rau chromium-molybdenum alloy steel phaj siv hauv cov hlab ntsha siab thiab boilers, ua kom cov khoom zoo thiab siv tau.
Kev kho cua sov cuam tshuam li cas rau kev nkag siab ntawm A387 Qib 22 Chav Kawm 2?
Kev kho cua sov kom zoo zoo li tempering refines nws microstructure rau hauv ruaj khov ferrite -pearlite los yog bainite. Cov qauv no tiv thaiv grain ciam zawv zawg ntawm qhov kub thiab txias, ua kom nws cov creep tsis kam.
Puas yog kev ntxhov siab annealing tsim nyog rau A387 Qib 22 Chav Kawm 2 cov khoom tom qab tsim khoom?
Yog, nws yog qhov tsim nyog rau feem ntau cov khoom. Raws li ib daim ntawv ntawm PWHT, nws txo cov kev ntxhov siab seem ntawm vuam thiab sib sau, txhim kho qhov ruaj khov thiab txuas ntxiv lub neej qaug zog ntawm cov khoom.
Dab tsi yog qhov txawv ntawm cov ntsiab lus chromium ntawm A387 Qib 22 Chav Kawm 2 thiab A387 Qib 11 Chav Kawm 2?
Qib 22 Chav Kawm 2 muaj 2.25% chromium, thaum Qib 11 Chav Kawm 2 muaj 1.25%. Cov ntsiab lus chromium siab dua no ua rau Qib 22 nrog oxidation zoo dua thiab corrosion kuj nyob rau hauv qhov kub thiab txias.
Lub zog creep ntawm A387 Qib 22 Chav Kawm 2 piv rau A516 Qib 70 ntawm 500℃li cas?
Ntawm 500 degree, Qib 22 Chav Kawm 2 muaj zog nkag siab ntau dua li A516 Qib 70 (carbon steel). Cov pa roj carbon steel creeps sai ntawm no, thaum Qib 22 tswj kev ua haujlwm ruaj khov rau lub sijhawm ntev.