SA517 Qib Byog asiab -lub zog, quenched thiab tempered alloy steel phajfeem ntau siv raufusion welded boilers thiab siab hlab ntsha. Nws yog lub npe hu rau nws lub zog yield zog thiab zoo toughness ntawm qis kub.
Key Properties & Specifications
SA517 Qib B steel daim hlau yog tsim los rau ASME SA-517 tus qauv thiab muab nkag rau hauv qhov kub thiab txias.
| Khoom | Specification |
|---|---|
| Hom khoom | Quenched thiab Tempered Alloy Steel |
| Yam tsawg kawg nkaus Yield Strength | 100 ksi [690 MPa](rau daim hlau 2.5 in. / 65 mm thiab hauv qab) |
| Tensile zog | 115-135 ksi [795-930 MPa] |
| Elongation (min hauv 2 ") | 16% |
| Impact Properties | Yam tsawg kawg transverse Charpy V-notch lateral expansion ntawm0.015 nti (0.38 hli)ntawm -40℃F [-40 degree] |
| Hom Thickness Range | 0.188 txog 1.250 nti [4.78 txog 31.75 mm] (ntau qhov ntau muaj los ntawm qee tus neeg muag khoom) |
Tshuaj muaj pes tsawg leeg
|
Qib Steel |
Cov ntsiab lus tseem ceeb hauv dov SA517Gr.B siab nkoj steel phaj |
||||||
|
C |
Si |
Mn |
P |
S |
Ni |
B |
|
|
SA 517 GrB |
0.15-0.21 |
0.15-0.35 |
0.70-1.00 |
0.035 |
0.035 |
- |
0.0005-0.005 |
|
Cr |
Mo |
Cu |
Nb |
Ti |
V |
Zr |
|
|
0.40-0.65 |
0.15-0.25 |
- |
- |
0.01-0.04 |
0.03-0.08 |
- |
|
Txheej Txheem Txheej Txheem ntawm SA517 Qib B
Kev tswj kub nruj hauv kev tsim & txiav
Kev tswj qhov kub thiab txias yog qhov yuav tsum tau ua rau txhua qhov kev tsim thiab txiav; Cov phaj tuab (Ntau dua lossis sib npaug li 50mm) xav tau preheating rau 100-150℃ua ntej txiav, thiab kub sib sau yog kaw rau 850-1100 degree. Qhov no tiv thaiv kev sib tsoo txias, kev ntxhov siab sab hauv thiab kev puas tsuaj los ntawm kev hloov pauv kub sai thaum lub sijhawm ua haujlwm thawj zaug.
Vuam nrog Hydrogen Control & Preheating
Tsawg- cov txheej txheem hydrogen welding (GMAW/SMAW/SAW) yog qhov yuav tsum tau muaj rau kev vuam. Lub hauv paus hlau preheating rau 150-250℃ua ntej vuam thiab interpass kub tswj hauv qab 300℃yog yuav tsum tau, uas zoo tshem tawm cov kev pheej hmoo ntawm hydrogen-induced vuam kab nrib pleb thiab xyuas kom meej weld sib koom ua ke.
Yuav tsum Thickness -Matched Post- Weld Thaum tshav kub kub kho
Tom qab-weld kev kho cua sov (PWHT) yog ib qho tseem ceeb ntawm cov txheej txheem, siv cov kev ntxhov siab los ntawm 620-680℃. Tuav lub sij hawm nruj me ntsis rau 1-2 teev ib 25 hli phaj thickness, ua raws li los ntawm qeeb txias (tsawg dua los yog sib npaug rau 50℃/ teev) kom tshem tawm tag nrho cov welding residual kev nyuaj siab thiab txhim kho tag nrho cov toughness ntawm cov khoom.
Optimized Machining Tom qab kho cua sov
Precision machining yog ua tshwj xeeb tom qab kev kho cua sov, nrog siab - hardness txiav cov cuab yeej saws thiab txiav ceev / pub tus nqi tswj nruj me ntsis. Qhov no zam cov khoom ua hauj lwm hardening thiab deg puas thaum lub sij hawm ua, kom ntseeg tau siab qhov tseeb thiab nto tiav ntawm cov khoom tiav.
Targeted Thaum tshav kub kub kho rau Deformation kho
Rau cov khoom uas muaj deformation loj heev thaum lub sij hawm ua, lub hom phiaj thib ob tempering ntawm 580-650℃yog nqa tawm. Qhov kev kho cua sov tshwj xeeb no rov qab kho cov khoom qub qub thiab cov khoom siv hluav taws xob tsis zoo ntawm cov khoom tsis muaj kev ua haujlwm poob, kom ntseeg tau tias muaj zog ntawm cov qauv.
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.
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.
SA517 Qib B puas tuaj yeem ua tau yooj yim?
Nws tuaj yeem ua tau machined, tab sis nws lub zog siab xav tau cov cuab yeej txiav ntse, txiav nrawm nrawm, thiab cov cua txias. Cov cuab yeej carbide tau pom zoo rau kev ua haujlwm zoo dua, thiab cov cuab yeej ua haujlwm yuav tsum tau hloov kho kom tsis txhob hnav cov cuab yeej ntau dhau.
Dab tsi yog qhov cuam tshuam lub zog xav tau ntawm SA517 Qib B?
Nyob rau hauv chav tsev kub, qhov tsawg kawg nkaus Charpy V-notch cuam tshuam lub zog yog 27 J (20 ft-lb). Rau cov kev siv kub tsawg -, yuav tsum muaj kev cuam tshuam ntau zog, uas tuaj yeem ua tiav los ntawm kev kho cua sov kom zoo.
Dab tsi yog qhov txawv ntawm SA517 Qib B thiab A516 Qib 70?
SA517 Qib B yog siab -lub zog quenched thiab tempered alloy steel, thaum A516 Qib 70 yog cov pa roj carbon steel. SA517 B muaj zog dua thiab tawv, haum rau siab dua / kub, thaum A516 70 yog rau kev siv lub nkoj siab dav.
SA517 Qib B muab tau li cas (piv txwv li, phaj, ntawv, coil)?
Nws yog feem ntau muab los ua daim hlau, uas yog daim ntawv tshaj plaws rau kev siv lub nkoj siab thiab kev siv boiler. Cov ntawv los yog coils tsis tshua muaj tab sis tuaj yeem tsim rau cov kev cai tshwj xeeb nrog kev ua haujlwm ntxiv.
Qhov siab tshaj carbon sib npaug (CE) ntawm SA517 Qib B yog dab tsi?
Cov pa roj carbon sib npaug (CE) feem ntau Tsawg dua lossis sib npaug li 0.45%, suav los ntawm cov qauv CE=C + Mn / 6 + (Cr + Mo + V) / 5 + (Ni + Cu)/15. CE qis dua ua kom zoo dua weldability thiab txo qhov kev pheej hmoo ntawm kev tawg.
SA517 Qib B puas tuaj yeem siv rau hauv cov qauv sab nrauv?
Yog lawm, nws yog tsim rau offshore roj thiab roj cov qauv, xws li platforms thiab subsea pipelines, vim nws lub zog siab, toughness, thiab tsis kam mus rau hnyav marine ib puag ncig (nrog rau kev tiv thaiv corrosion zoo).
Dab tsi yog qhov yuav tsum tau khaws cia rau SA517 Qib B daim hlau?
Cov phaj yuav tsum muab khaws cia rau hauv qhov chaw qhuav, zoo- qhov cua, kom deb ntawm cov dej noo thiab corrosive. Lawv yuav tsum tau muab tso rau ntawm cov ntoo pallets kom tiv thaiv kev sib cuag nrog hauv av thiab npog nrog cov ntawv tsis muaj dej.
Dab tsi yog qhov yield -rau-tensile ratio ntawm SA517 Qib B?
Qhov kev tawm los ib txwm - rau - tensile ratio yog nyob ib ncig ntawm 0.75-0.80. Qhov piv no qhia txog cov khoom muaj peev xwm tiv taus ntau dhau ua ntej ncav cuag cov yas deformation, ua kom muaj qhov sib npaug zoo ntawm lub zog thiab kev nyab xeeb.
Puas muaj kev txwv rau kev siv SA517 Qib B hauv kev pabcuam hydrogen?
Nws tuaj yeem siv rau hauv kev pabcuam hydrogen ntawm qhov kub thiab txias, tab sis hydrogen embrittlement yuav tshwm sim ntawm qhov kub thiab txias. Kev kho cua sov kom zoo thiab kuaj cov khoom siv (xws li kev sim hydrogen embrittlement) yuav tsum tau ua.
Yuav tsum muaj ntawv pov thawj dab tsi rau SA517 Qib B daim hlau?
Cov ntawv pov thawj muaj xws li ASME SA-517 daim ntawv pov thawj, cov ntawv xeem mills (MTR) nrog cov ntaub ntawv tshuaj thiab cov cuab yeej cuab tam, thiab daim ntawv pov thawj thib peb (piv txwv li, ABS, DNV) rau cov ntawv thov tseem ceeb xws li offshore thiab lub zog tsim hluav taws xob.