Puas yog koj tab tom nrhiav cov khoom zoo siab - steel zoo rau boiler lossis lub nkoj siab?A/SA 283 Gr.C hlauyog qhov kev xaiv saum toj kawg nkaus rau qis- rau- cov ntawv thov siab nruab nrab, thiab koj tau los rau cov chaw tsim khoom tsim nyog.
Raws li tus neeg muag khoom hauv Suav teb nrog 18+ xyoo dhau los, GNEE tsim ASME- ntawv pov thawj A/SA 283 Gr.C daim hlau tshwj xeeb tsim los rau cov boilers thiab cov hlab ntsha siab, kom ua raws li cov qauv kev nyab xeeb thoob ntiaj teb thiab kev ua tau zoo.
Hauv phau ntawv qhia no, peb yuav rhuav tshem vim li cas qib no ua tau zoo hauv cov ntawv thov tseem ceeb, nws cov kev xav tau, thiab GNEE cov khoom ua tau raws li koj qhov project xav tau.
Yog vim li cas A / SA 283 Gr.C hlau yog haum rau boilers & siab Vessels
A/SA 283 Gr.C steel yog lub hom phiaj- tsim los rau boiler thiab siab hlab ntsha kev pab cuam, nrog cov khoom tseem ceeb uas hais txog qhov tshwj xeeb xav tau ntawm cov ntawv thov no-xws li kub stability, siab tsis kam, thiab fabricability.
Cov laj thawj tseem ceeb uas nws sawv tawm:
- Tswj Lub Zog - rau - Ductility Balance: Nrog rau qhov tsawg kawg nkaus lub zog ntawm 30 ksi (207 MPa) thiab 25% elongation, nws resists mus tas li deformation nyob rau hauv lub siab thaum tseem hloov tau txaus los tiv thaiv thermal expansion (tseem ceeb rau boiler cyclic cua sov).
- ASME Kev Ua Raws Cai: Raws li cov khoom siv SA 283 Qib C (tus "S" qhia txog ASME BPVC daim ntawv pov thawj), nws ua tau raws li cov kev cai nruj ntawm ASME Tshooj II- yuav tsum tau ua rau cov hlab ntsha siab siv hauv cov roj, roj, thiab hluav taws xob kev lag luam.
- Weldability zoo heev: Nws cov ntsiab lus tsis tshua muaj carbon (max 0.24%) thiab tswj cov sulfur (max 0.040%) txo cov vuam tawg, qhov tseem ceeb tshaj plaws rau kev tsim cov hlab ntsha siab (qhov twg weld kev ncaj ncees cuam tshuam txog kev nyab xeeb).
A/SA 283 Gr.C steel daim hlau fabricated rau hauv ib tug tsawg- siab cia nkoj rau industrial chav tshuab
Rau boiler thiab siab hlab ntsha tej yaam num yuav tsum tau ntawv pov thawjA/SA 283 Gr.C hlau, xyuas peb [A/SA 283 Gr.C khoom nplooj] kom pom muaj thicknesses (6mm–150mm) thiab thov zeb xeem ntawv qhia (MTRs).
A / SA 283 Gr.C Steel Specs rau Boilers & Siab Vessels (ASME Ua Raws Cai)
Txhawm rau kom muaj kev nyab xeeb thiab ua haujlwm tau zoo hauv kev pabcuam boiler / siab lub nkoj, A / SA 283 Gr.C yuav tsum tau ua raws li ASME BPVC Tshooj II nruj me ntsis.
Hauv qab no yog cov kev cai tseem ceeb rau cov ntawv thov no:
| Specification qeb | Yuav tsum tau rau Boilers & Siab Vessels | Lub hom phiaj rau Kev Pabcuam Tseem Ceeb |
|---|---|---|
| Chemical Composition (Max) | C: 0.24%, Mn: 0.95%, P: 0.040%, S: 0.040% | Tiv thaiv brittleness ntawm qhov kub thiab txias thiab xyuas kom meej weld |
| Mechanical Properties (Min) | Tawm Zog: 30 ksi (207 MPa), Tensile Strength: 55 ksi (379 MPa), Elongation: 25% | Withstands kev khiav hauj lwm siab tsis ua hauj lwm los yog mus tas li deformation |
| Qhov kub thiab txias | -20 ° F txog 650 ° F (-29 ° F txog 343 ° F) | Khaws lub zog thiab ductility nyob rau hauv ib txwm boiler / siab hlab ntsha khiav hauj lwm temps |
| NDT Requirements | Kev Ntsuas Ultrasonic (UT) rau ASME SA-578 Qib B | Txheeb xyuas qhov tsis xws luag sab hauv (piv txwv li, suav nrog) uas tuaj yeem ua rau lub siab ntws tawm |
| Kev kho cua sov | Normalized (optional for plates >1.5 hli tuab) | Ua kom cov qauv zoo sib xws rau kev ua haujlwm siab tsis tu ncua |
Lus Cim: Rau cov hlab ntsha siab ua haujlwm siab tshaj 650℃F (343 degree), sab laj GNEE cov kws tshaj lij pab pawg- peb tuaj yeem pom zoo cov qib hloov kho (xws li A516 Qib 70) thaum tswj kev ua haujlwm tau zoo.
A / SA 283 Gr.C Steel Applications hauv Boiler & Pressure Vessel Sectors
A/SA 283 Gr.C steel tsis yog "ib- loj- haum-tag nrho" kev daws teeb meem- nws ua tau zoo hauv cov boiler tshwj xeeb thiab lub nkoj siab sub-cov ntawv thov uas qis- rau- qhov nruab nrab siab thiab qhov kub xav tau raws li nws cov khoom.
Cov ntawv thov uas muaj xws li:
- Tsawg-Steam Boilers: Siv rau kev pabcuam boilers hauv cov chaw tsim khoom lossis cov tsev lag luam (kev ua haujlwm siab tsawg dua lossis sib npaug ntawm 150 psi / 10.3 bar), qhov twg nws cov ductility tuav cov thermal cycling.
- Cov nkoj cia: Qhov zoo tshaj plaws rau khaws cia tsis yog{0}} cov kua dej txaus ntshai (piv txwv li, dej, tshuaj me me) ntawm qhov kub thiab txias (piv txwv li, cov dej tso tsheb hlau luam).
- Boiler Economizers: Ua haujlwm raws li lub plhaub sab nrauv rau cov khoom siv nyiaj txiag (kub rov qab tshuab), qhov twg nws cov weldability yooj yim sib dhos nrog cov cua kub exchanger raj.
- Kev txhawb nqa lub nkoj siab: Siv rau cov khoom siv (piv txwv li, tiab, lugs) ntawm siab - cov hlab ntsha siab, qhov uas nws muab kev ruaj ntseg yam tsis tas yuav tsum muaj lub zog tib yam li lub nkoj lub cev.
A / SA 283 Gr.C Hlau rau Boiler
Rau cov ntawv thov kev cai (piv txwv li, tsis yog- qhov loj ntawm lub nkoj), GNEE muab kev txiav- mus rau -ntev A/SA 283 Gr.C daim hlau nrog nrawm nrawm- hu rau peb los tham txog koj qhov project qhov ntev.
GNEE's Quality Assurance for A/SA 283 Gr.C Steel in Boiler/Pressure Vessel Siv
Thaum muab A/SA 283 Gr.C rau boilers lossis cov hlab ntsha siab, qhov zoo tsis yog -xav tau.
GNEE siv 4-kauj ruam cov txheej txheem tswj kom zoo kom ntseeg tau tias txhua lub phaj ua tau raws li ASME cov qauv thiab koj qhov project txoj cai kev nyab xeeb:
- Raw Material Inspection: Tag nrho cov steel billets raug kuaj rau tshuaj muaj pes tsawg leeg (ntawm spectrometry) kom ua raws li A/SA 283 Gr.C txwv ua ntej dov.
- Hauv -Kev Xeem Ua Haujlwm: Cov phaj raug kuaj xyuas cov thickness thiab flatness thaum dov, nrog tensile thiab cuam tshuam kev ntsuam xyuas ntawm cov qauv daim coupon (ib ASME SA-370).
- Kev Xeem Tsis Muaj Kev Ua Phem (NDT): 100% ultrasonic testing (UT) is performed on plates >6mm tuab txhawm rau txheeb xyuas qhov tsis xws luag, ntxiv rau kev tshuaj xyuas qhov muag rau qhov tsis zoo.
- Cov ntaub ntawv pov thawj: Txhua qhov kev txiav txim suav nrog tag nrho ASME - ua raws MTR, traceable rau tus naj npawb cua sov, thiab daim ntawv pov thawj ntawm kev ua raws cai (CoC) rau kev lis kev cai thiab kev pom zoo qhov project.
Cov txheej txheem no ua kom koj lub A / SA 283 Gr.C steel tsis tsuas yog ua tau raws li tab sis tshaj qhov kev nyab xeeb uas yuav tsum tau ua rau boiler thiab lub nkoj siab.
Xaus
Rau boiler thiab siab hlab ntsha tej yaam num uas yuav tsum tau txhim khu kev qha, ASME - ntawv pov thawj steel rau qis - rau - cov ntawv thov siab,A/SA 283 Gr.C hlauyog qhov kev xaiv zoo tshaj plaws - muab qhov sib npaug ntawm lub zog, ductility, thiab weldability.
Raws li cov chaw tsim khoom ntseeg siab, GNEE xa cov qib no nrog kev tswj hwm nruj, kev xa khoom sai (7-hnub lub sijhawm ua rau cov qauv loj), thiab cov nqi sib tw ntawm lub Hoobkas, ua kom yooj yim dua kom tau raws li cov sijhawm teem sijhawm thiab cov peev nyiaj.
Txawm hais tias koj xav tau A / SA 283 Gr.C daim hlau rau ib lub boiler me me los yog lub nkoj loj, peb pab neeg muab kev txhawb nqa los txiav txim siab koj cov khoom siv thiab xyuas kom ua raws li cov cai hauv zos. Tsis txhob cuam tshuam txog kev nyab xeeb- xaiv cov ntawv pov thawj A/SA 283 Gr.C steel los ntawm cov chaw tsim khoom nrog cov ntaub ntawv pov thawj hauv kev siv boiler thiab lub nkoj siab.
Tiv tauj peb hnub nokom tau ib daim ntawv tsocai pub dawb rauA/SA 283 Gr.C hlauthiab thov ib tus qauv MTR- cia peb ua kom koj qhov project boiler lossis siab lub nkoj muaj kev nyab xeeb, ua raws, thiab ua tiav.
