SA 387 Qib 5 Chav Kawm 1yog chromium -molybdenum alloy steel phaj teev nyob rau hauv ASME Boiler thiab Pressure Vessel Code. Nws yog tsim los siv nyob rau hauv welded siab hlab ntsha thiab boiler Cheebtsam uas ua hauj lwm nyob rau hauv siab kub. Cov khoom muab lub zog zoo thiab nkag mus rau qhov kub thiab txias, nrog rau qhov tsim nyog toughness thiab weldability. Qhov kev xaiv "Class 1" qhia txog qib tshwj xeeb ntawm cov khoom siv kho tshuab thiab kev kho cua sov, feem ntau cuam tshuam nrog kev ua haujlwm zoo thiab ua kom sov kom ua tiav qhov xav tau ua ke ntawm lub zog thiab ductility. Cov qib no feem ntau ua haujlwm 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.
Sib npaug
| BS | EN | ASME | DIN |
| ... | ... | SIB 387-5-1 | ... |
Specifications ASME SA387 Qib 5 Alloy Steel Phaj
| Lub npe | Nominal Chromium Cov ntsiab lus (%) |
Nominal Molybdenum Cov ntsiab lus (%) |
| SA387 Qib 5 | 5.00% | 0.50% |
Tensile Requirements rau ASME SA387 Qib 5 Alloy Steel Phaj Chav Kawm 1 Phaj
| Lub npe: | Yuav tsum tau: | Qib 5 |
|
SA387 Qib 5 |
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 ASME SA387 Qib 5 Alloy Steel Phaj
| Element | Chemical Composition (%) | |
| SA 387 Qib 5 | ||
| Cov pa roj carbon: | Kev Ntsuas Kub: | 0.15 max |
| Product Analysis: | 0.15 max | |
| 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: | 0.030 |
| Product Analysis: | 0.030 | |
| Silicon: | Kev Ntsuas Kub: | 0.50 max |
| Product Analysis: | 0.55 max | |
| Chromium: | Kev Ntsuas Kub: | 4.00 - 6.00 |
| Product Analysis: | 3.90 - 6.10 | |
| Molybdenum: | Kev Ntsuas Kub: | 0.45 - 0.65 |
| Product Analysis: | 0.40 - 0.70 |
ua
Melting thiab Casting
Cov hlau yog tsim los ntawm kev tswj cov txheej txheem melting kom ua tiav cov tshuaj lom neeg muaj pes tsawg leeg thiab txo qis impurities. Tom qab melting, nws yog cam khwb cia rau hauv ingots los yog tsis tu ncua cam khwb cia slabs, xyuas kom meej soundness thiab uniformity nyob rau hauv lub raws li - nrum qauv.
Kub Rolling
Cov slabs yog reheated mus rau ib tug zoo kub ntau yam thiab ces kub dov mus rau qhov xav tau phaj thickness. Rolling yog ua nrog ceev faj txog kev tswj qhov kub thiab txias thiab txo cov sij hawm los txhawb kev nplua, zoo li microstructure thiab zoo txhua yam khoom los ntawm cov tuab.
Kev kho cua sov (Normalizing thiab Tempering)
Normalizing: Cov phaj yog rhuab mus rau qhov kub thiab txias tshaj qhov kev hloov pauv thiab tom qab ntawd txias hauv huab cua. Cov kauj ruam no ua kom zoo dua cov qauv nplej, txhim kho lub zog, thiab ua kom zoo sib xws hauv cov khoom siv kho tshuab.
Tempering: Tom qab normalizing, cov khoom yog reheated rau qis kub thiab tuav rau ib lub sij hawm teev ua ntej txias. Cov txheej txheem no txhim kho qhov tawv nqaij, txo qhov tawv, txo qhov kev ntxhov siab sab hauv, thiab ua kom zoo dua qhov sib npaug ntawm lub zog thiab kev ua kom zoo uas xav tau rau siab - kev pabcuam kub.
Tiav thiab Kev Tshuaj Xyuas
Tom qab kev kho cua sov, daim hlau yuav raug kho kom haum raws li qhov yuav tsum tau ua kom tiaj tus thiab ua kom lub ntsej muag kom tshem tawm cov nplai lossis qhov tsis zoo. Kev tshuaj xyuas tsis zoo, xws li kev kuaj ultrasonic, feem ntau ua los xyuas kom tsis muaj qhov tsis zoo. Cov kauj ruam ua tiav no pab cov khoom ua raws li cov qauv nruj thiab kev ntseeg siab ntawm ASME Boiler thiab Pressure Vessel Code.
Daim ntawv thov
Siv nyob rau hauv welded siab hlab ntsha thiab boiler Cheebtsam ua hauj lwm nyob rau hauv siab kub
Siv nyob rau hauv cov cuab yeej refinery thiab petrochemical ua chav tsev
Siv nyob rau hauv lub zog tsim hluav taws xob systems thiab tshav kub exchangers
Ua hauj lwm hauv cov kav dej thiab lub siab -muaj cov khoom uas yuav tsum muaj siab - qhov kub thiab txias
Qhov zoo
Muab lub zog zoo tuav ntawm qhov kub thiab txias
Muab kev nkag tau zoo heev rau qhov ntev - thermal raug
Exhibits tsim nyog toughness thiab ductility rau txhim khu kev qha kev ua tau zoo
Nta zoo weldability, haum rau fabricating loj thiab complex qauv
Cov txiaj ntsig los ntawm kev tswj cov cua sov, kom ntseeg tau tias cov khoom siv zoo ib yam
Ua raws li ASME Boiler thiab Pressure Vessel Code cov cai rau kev nyab xeeb thiab kev ntseeg siab
Yog tias koj muaj qhov yuav tsum tau ua rau SA 387 GRADE 5 Chav Kawm 1, peb zoo siab tos txais koj qhov kev nug. GNEE tuav cov khoom lag luam loj uas feem ntau siv cov qib siab zog steel rau koj xaiv.Rau cov ncauj lus kom ntxaws txhua yam khoom, tshuaj lom neeg muaj pes tsawg leeg, thiab cov ntaub ntawv kev, nrog rau cov qauv dawb, thov hu rau peb lub Hoobkas tam sim ntawd. Peb muab cov nqi sib tw, ruaj khov zoo, thiab kev pabcuam tshaj lij. Email: beam@gneesteelgroup.com.
Cov khoom no puas tuaj yeem raug ua haujlwm txias? Muaj kev txwv dab tsi?
Nws tuaj yeem ua haujlwm txias txias. Vim nws lub zog siab, kev ua haujlwm txias yuav tsum muaj lub zog loj, thiab qhov nruab nrab annealing yog xav tau kom tsis txhob deformation ntau dhau thiab tawg.
Dab tsi yog qhov creep resistance ntawm SA 387 Qeb 5 Chav Kawm 1?
Nws muaj zoo heev creep kuj. Ntawm qhov kub thiab txias thiab ntev - lub sij hawm thauj khoom, lub creep deformation yog me me, uas tuaj yeem ua kom muaj kev ruaj ntseg ntawm cov khoom siv siab.
Dab tsi yog qhov txawv ntawm nws thiab carbon steel nyob rau hauv cov nqe lus ntawm siab -kub kev ua tau zoo?
Piv nrog carbon steel, nws muaj qhov zoo dua siab - qhov kub thiab txias tsis kam, tsis yooj yim rau oxidize thiab soften ntawm qhov kub thiab txias, haum rau hnyav hnyav dua - qhov kub thiab txias.
Dab tsi yog qhov teeb meem tseem ceeb kom tsis txhob muaj cov txheej txheem ntawm cov hlau no?
Lub ntsiab tsis xws luag yuav tsum tsis txhob muaj xws li kev sib cais, porosity, tawg thiab inclusions. Kev tswj nruj ntawm cov txheej txheem smelting thiab kev kho cua sov tuaj yeem txo qhov tsis xws luag.
SA 387 GRADE 5 Chav Kawm 1 puas tuaj yeem siv rau cov phab ntsa dej boiler?
Yog lawm, nws tuaj yeem siv rau cov phab ntsa dej boiler hauv nruab nrab - kub boilers. Nws tiv taus cua sov thiab siab- cov kabmob muaj peev xwm ua tau raws li qhov yuav tsum tau ua ntawm cov phab ntsa dej boiler.
Dab tsi yog qhov thermal conductivity ntawm cov khoom no? Nws cuam tshuam li cas rau daim ntawv thov?
Nws cov thermal conductivity yog li 40-45 W / (m·K) ntawm chav tsev kub, uas yog qis dua carbon steel, yuav tsum tau tsim tsim nyog nyob rau hauv cov khoom siv hluav taws xob sib pauv kom ntseeg tau tias kev hloov hluav taws xob.
Cov ncej dab tsi -weld cua sov txoj kev kho kom haum rau cov hlau no?
Tsim nyog tshaj tawm -weld cua sov txoj kev kho mob muaj xws li tempering thiab kev ntxhov siab nyem annealing, uas tuaj yeem tshem tawm cov kev ntxhov siab seem, txhim kho kev sib koom ua ke thiab tiv thaiv kev ntxhov siab corrosion tawg.
Dab tsi yog qhov corrosion kuj ntawm cov hlau no hauv siab -kub qhov cub?
Nws muaj qhov zoo corrosion kuj nyob rau hauv siab -kub chav, ua ib tug ntom oxide zaj duab xis nyob rau saum npoo los tiv thaiv chav oxidation, kom ntseeg tau ntev -lub sij hawm kev pab cuam lub neej nyob rau hauv lub chav ib puag ncig.
Qhov txawv ntawm SA 387 GRADE 5 Chav Kawm 1 thiab SA 387 GRADE 9 yog dab tsi?
SA 387 GRADE 9 muaj cov ntsiab lus chromium ntau dua (8.00%-10.00%), zoo dua siab -kub corrosion kuj, thaum Qib 5 Chav Kawm 1 yog tus nqi ntau dua-zoo rau cov xwm txheej kub kub.
Cov khoom no puas tuaj yeem nitrided los txhim kho qhov tawv tawv?
Yog, nws tuaj yeem ua nitrided. Nitriding kev kho mob tuaj yeem tsim cov txheej txheem nitride nyuaj rau ntawm qhov chaw, txhim kho qhov tawv tawv thiab hnav tsis kam yam tsis txo cov tub ntxhais toughness.
Dab tsi yog qhov melting point ntau ntawm SA 387 GRADE 5 Chav Kawm 1?
Nws cov ntsiab lus melting yog li ntawm 1450-1500 degree, uas yog me ntsis qis dua cov pa roj carbon steel vim yog cov ntsiab lus alloy, tab sis nws tseem muaj qhov kub thiab txias stability hauv qab lub melting point.