Dab tsi welding pas nrig rau ASME SA 516 Qib 70?
Rau vuamASME SA 516 Qib 70(ib siab- zog, carbon- steel siab hlab phaj), feem ntau thiab pom zoo muab tub lim hlau yogE7018los yogE7018-1stick electrodes (SMAW) rau lawv cov siab -zoo, qis- hydrogen deposits. Rau mechanized welding,Qauv: ER70S-6(GMAW/GTAW) orE71T-1C(FCAW) feem ntau siv, tshwj xeeb tshaj yog rau siab - khaws cov ntawv thov.
ASME SA516 Qib 70 yog lub siab lub nkoj zoo (PVQ) cov pa roj carbon steel phaj uas muab qhov sib npaug zoo ntawm lub zog, weldability, thiab toughness. Nws yog tsim tshwj xeeb los tiv thaiv cov kev ntxhov siab nyob hauv cov boilers thiab cov thawv ntim siab ua haujlwm nyob rau hauv ib puag ncig uas yuav tsum tau zam kev tawg tawg. Los ntawm kev siv cov tshuaj silicon los yog txhuas tua cov neeg ua haujlwm, cov hlau ua tiav cov qauv huv, zoo ib yam. Nws yog thawj qhov kev xaiv rau cov kws tsim qauv tsim uas yuav tsum tau ua kom qhov siab tshaj plaws Kev Tso Cai Ua Haujlwm Siab (MAWP) ntawm lub nkoj yam tsis tau siv rau cov khoom kim heev - alloy steels.
Cov yam ntxwv tseem ceeb
Nthuav Toughness:Ua kom muaj kev ncaj ncees nyob rau hauv qhov kub thiab txias qhov twg carbon steel ua nkig.
Uniformity:Cov khoom sib xws txhua yam thoob plaws lub phaj thickness.
Nto Zoo:Cov qauv tshuaj ntsuam xyuas siab dua (S-requirements) feem ntau yog siv rau kev ua kom huv si.
Thickness ntau yam:Muaj nyob rau hauv thicknesses ntawm 6mm mus rau ntau tshaj 200mm (nrog normalization).
Qib Qib
"SA":Qhov "S" qhiaTshooj II(Cov ntaub ntawv) ntawm ASME Code. Qhov "A" txhais tau tias aKhoom siv ferrous(hlau-raws li).
"516":Qhov no qhia txog cov khoom siv tshwj xeeb rau"Pressure Vessel Plates, Carbon Steel, for Moderate- and Lower-Temperature Service."
"Qib 70":Qhov no sawv cev rauYam tsawg kawg Tensile Strengthntawm steel, uas yog70 ksg(70,000 psi los yog kwv yees . 485 MPa). Nws yog lub zog siab tshaj plaws nyob rau hauv SA516 specification.
Kev sib piv (vs. SA515 Gr. 70)
Qhov kub thiab txias:SA516 yog rau "Moderate/Lower" kub, hos SA515 yog rau "Intermediate/Higher" kub.
Grain xyaum:SA516 sivCov nplej zooxyaum ua kom muaj zog; SA515 sivCoarse nplejkom zoo dua creep kuj.
Qhov yuav tsum tau muaj kev cuam tshuam:SA516 yuav tsum xeem dhau Charpy V-kev ntsuas ntsuas rau qis-temp kev pabcuam; SA515 feem ntau tsis ua.
Microstructure:SA516 muaj qhov zoo dua ferrite-pearlite grain loj dua SA515.
Cov ntawv thov siv
Compressed Cua Receivers:Cov khoom siv txheem rau kev lag luam - qib cua tso tsheb hlau luam.
Heat Exchanger Plhaub:Siv rau tsev tub raj pob hauv kev ua tshuaj lom neeg.
Nuclear Containment:Tsis yog - tseem ceeb nyob rau theem siab ciam teb hauv cov chaw tsim hluav taws xob.
Surge Tanks:Siv nyob rau hauv kev kho dej thiab hydropower systems los tswj lub siab spikes.
Cov tshuaj muaj pes tsawg leeg ntawm ASME SA516 Qib 70 yog dab tsi?
Cov tshuaj muaj pes tsawg leeg ntawm ASME SA516 Qib 70 feem ntau suav nrog:, Carbon (C): 0.19–0.24%, Manganese (Mn): 0.60–1.35%, Phosphorus (P): Tsawg dua lossis sib npaug li 0.035%, Sulfur (S): Tsawg dua lossis sib npaug rau 0.0405%, cov ntsiab lus pab txhawb rau cov khoom muaj zog tensile siab, toughness, thiab tsis kam rau thermal degradation, ua rau nws haum rau siab -kub siab siv nkoj.
Dab tsi yog qhov elongation ntawm ASME SA516 Qib 70?
Rau daim hlau nrog lub thickness txog li 1.5 nti (38 hli), ASME SA516 Qib 70 feem ntau nthuav tawm qhov elongation ntawm 20% hauv 8 ntiv tes (200 hli). Qhov siab elongation tus nqi no qhia tau hais tias cov khoom zoo ductility, tso cai rau nws ncab yam tsis muaj qhov nro. Cov khoom elongation yog ib qho tseem ceeb rau kev ua kom cov hlab ntsha siab ua los ntawm cov khoom siv no tuaj yeem tiv taus siab - kev ntxhov siab yam tsis ua haujlwm.
ASME SA516 Qib 70 yog dab tsi?
ASME SA516 Qib 70 yog cov pa roj carbon steel siv rau kev tsim cov hlab ntsha thiab cov boilers. Nws yog ib feem ntawm ASME Boiler thiab Pressure Vessel Code (BPVC) thiab tau siv dav hauv kev lag luam xws li kev tsim hluav taws xob, petrochemical, thiab kev ua tshuaj lom neeg. Paub txog nws lub zog siab thiab zoo weldability, nws tuaj yeem tiv taus qhov kub thiab txias, ua rau nws zoo tagnrho rau kev siv siab - kev ntxhov siab.
Kev xav tau tshuaj
* Cov ntsiab lus sawv cev hauv feem pua
| Cov ntsiab lus | TIAB SA 516 Gr 65 (Qib 450) |
|---|---|
| Cov pa roj carbon, max Composition% | |
| 1/2 nti (12.5 mm) thiab qis dua | 0.24 |
| Tshaj 1/2 txog 2 nti (12.5 txog 50 mm), incl | 0.26 |
| Tshaj 2 mus rau 4 nti (50 mus rau 100 mm), incl | 0.28 |
| Tshaj 4 mus rau 8 nyob rau hauv. (100 mus rau 200 mm), incl | 0.29 |
| Tshaj 8 nti (200mm) | 0.29 |
| Manganese, max | |
| 1/2 (12.5) thiab hauv qab: | |
| Kev ntsuas kub | 0.85-1.20 |
| Kev tshuaj xyuas cov khoom | 0.79-1.30 |
| Tshaj 1/2 nyob rau hauv (12.5) | |
| Kev ntsuas kub | 0.85-1.20 |
| Kev tshuaj xyuas cov khoom | 0.79-1.30 |
| Phosphorus, max | 0.025 |
| Sulfur, max | 0.025 |
| Silicon | |
| Kev ntsuas kub | 0.15-0.40 |
| Kev tshuaj xyuas cov khoom | 0.13-0.45 |
Tensile Requirements
| TIAB SA 516 Gr 65 (Qib 450) |
|
|---|---|
| Tensile zog, ksi (MPa) | 65-85(450-585) |
| Yield zog, min.B ksi (MPa) | 35(240) |
| Elongation hauv 8 nti (200 mm), min, % | 19 |
| Elongation hauv 2 nti (50 mm), min, % | 23 |
1. Dab tsi yog qhov nyuaj ntawm ASME SA516 Qib 70?
Brinell hardness rau ASME SA516 Qib 70 feem ntau yog nyob ntawm 130 txog 160 HB. Qhov ntau ntawm hardness no ua kom cov khoom tuav nws lub zog thiab tsis kam hnav thaum tseem tso cai rau weldability zoo. Qib hardness yog optimized kom sib npaug zog, ductility, thiab kuj rau deformation, ua rau nws haum rau siab - siab daim ntawv thov nyob rau hauv xav tau kev lag luam xws li roj thiab roj.
2. Dab tsi yog cov ntsiab lus sulfur hauv ASME SA516 Qib 70?
Cov ntsiab lus sulfur hauv ASME SA516 Qib 70 yog txwv rau qhov siab tshaj plaws ntawm 0.035%. Cov ntsiab lus tsis tshua muaj leej faj yog qhov tseem ceeb hauv kev tiv thaiv kev tsim cov sulfide inclusions, uas tuaj yeem ua rau cov khoom tsis muaj zog thiab ua rau nws yooj yim dua rau kev tawg, tshwj xeeb tshaj yog thaum vuam. Qhov no pab ua kom cov khoom muaj zog thiab ua haujlwm ntev, tshwj xeeb tshaj yog nyob rau hauv siab - kev siv siab.
3. Lub zog tawm ntawm ASME SA516 Qib 70 yog dab tsi?
Lub zog tawm los ntawm ASME SA516 Qib 70 feem ntau yog 38 ksi (260 MPa) ntawm chav tsev kub. Qhov kev tawm dag zog no yog qhov tseem ceeb rau kev tswj xyuas cov khoom tsim kev ncaj ncees nyob rau hauv siab, tiv thaiv deformation lossis tsis ua haujlwm. Nrog nws lub zog tawm los, SA516 Qib 70 tuaj yeem ua haujlwm siab - cov kev mob siab hauv cov chaw tsim hluav taws xob, refineries, thiab kev lag luam tshuaj, qhov twg cov khoom yuav tsum tiv thaiv deformation thaum lub sijhawm ua haujlwm.
4. Dab tsi yog qhov kev txiav txim siab vuam rau ASME SA516 Qib 70?
Vuam ASME SA516 Qib 70 yuav tsum tau ceev faj tswj cov cua sov kom tsis txhob tawg thiab distortion. Preheating thiab post-weld heat treatment (PWHT) feem ntau pom zoo rau cov ntu tuab kom txo tau cov thermal stresses. Kev xaiv zoo ntawm cov khoom siv hlau thiab cov txheej txheem vuam, xws li Shielded Hlau Arc Vuam (SMAW) lossis Gas Tungsten Arc Vuam (GTAW), yog ib qho tseem ceeb los xyuas kom muaj zog, txhim khu kev qha welds yam tsis muaj kev cuam tshuam cov khoom siv.
5. Dab tsi yog qhov corrosion kuj ntawm ASME SA516 Qib 70?
ASME SA516 Qib 70 muab qhov nruab nrab corrosion kuj, tshwj xeeb tshaj yog thaum raug mob me me. Txawm li cas los xij, nws tsis yog tsim tshwj xeeb rau cov cheeb tsam uas muaj corrosive heev xws li cov nyob hauv dej hiav txwv los yog acidic. Nyob rau hauv ib puag ncig hnyav, cov txheej tiv thaiv ntxiv lossis ntau dua corrosion- cov ntaub ntawv tiv taus xws li cov hlau tsis muaj steel yuav tsum tau los tiv thaiv kev puas tsuaj ntxov ntxov thiab ua kom ntev - ua haujlwm tau ntev.
6. Lub zog tensile ntawm ASME SA516 Qib 70 yog dab tsi?
Lub zog tensile ntawm ASME SA516 Qib 70 thaj tsam ntawm 70 ksi txog 90 ksi (483-620 MPa). Qhov no muab cov khoom uas muaj peev xwm tiv taus siab sab hauv thiab cov neeg kho tshuab kev ntxhov siab yam tsis ua haujlwm. Lub zog tensile no ua rau nws cov khoom siv txhim khu kev qha rau kev siv hauv cov hlab ntsha siab, boilers, thiab lwm yam siab -siab tshuab, kom ntseeg tau ntev - lub sij hawm cov qauv kev ncaj ncees txawm nyob rau hauv cov ntaub ntawv thov.
7. Qhov siab tshaj plaws thickness rau ASME SA516 Qib 70 yog dab tsi?
ASME SA516 Qib 70 daim hlau feem ntau muaj nyob rau hauv thicknesses xws li 3/16 nti (4.76 mm) mus rau 4 nti (102 mm). Cov phaj tuab tuaj yeem siv rau cov ntawv tshwj xeeb, tab sis cov khoom muaj peev xwm tiv taus siab nce nrog tuab. Rau cov phaj tuab heev, kev kho cua sov ntxiv thiab tom qab- cov txheej txheem vuam feem ntau yuav tsum tau ua kom ntseeg tau tias cov khoom siv kho mob xav tau.
Yog tias koj muaj qhov yuav tsum tau ua rau ASME SA516 Qib 70, peb txais tos koj 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: info@gneesteels.com
