Dab tsi yog cov khoom siv kho tshuab ntawm SA203 Qib B?
SA203 Qib Byog nickel- alloy steel phaj txheem raws li ASME Boiler thiab Pressure Vessel Code (Section II, Part A). Nws yog tsim tshwj xeeb rau qis- qhov kub thiab txias kev pabcuam hauv cov hlab ntsha siab thiab lwm cov qauv tseem ceeb uas yuav tsum muaj qhov zoo ntawm qhov tsis zoo ntawm sub- xoom kub yuav tsum tau
Cov khoom siv kho tshuab rau SA203 Qib B yog txhais los ntawm ASME SA-203 / SA-203M specification. Hauv qab no yog cov khoom tseem ceeb rau feem ntau cov phaj thickness ntau.
Cov khoom tseem ceeb (ASME SA-203 / SA-203M)
1. Tensile Properties (rau cov phaj Tsawg dua lossis sib npaug ntawm 2.5 hauv / 63.5 hli tuab):
Tensile zog: 65 - 85 ksi (450 - 585 MPa)
Yield zog (tsawg kawg): 37.5 ksi (260 MPa)
Elongation (tsawg kawg hauv 2 hauv / 50mm):
22% rau cov qauv ntev
18% rau transverse qauv
2. Tensile Properties rau Thicker Phaj:
Cov khoom txo qis nrog nce thickness ntawm tus qauv cov ntxhuav.
Rau daim hlau> 2.5 txog 4 hauv (63.5 txog 100 mm):
Tensile zog: 65 - 85 ksi (450 - 585 MPa)
Yield zog (Min): 35.5 ksi (245 MPa)
Rau daim hlau> 4 mus rau 8 nyob rau hauv (100 mus rau 200 mm):
Tensile zog: 63 - 83 ksi (435 - 570 MPa)
Yield zog (Min): 33 ksi (230 MPa)
3. Impact Toughness (Charpy V-Notch):
Kev ntsuam xyuas cuam tshuam yog qhov yuav tsum tau muaj rau cov ntaub ntawv SA203.
Tus qauv ntsuas kub rau Qib B yog -75℃F (-60 degree).
Yam tsawg kawg nkaus Txais (rau tag nrho- qhov loj me, 10mm x 10mm):
Qhov nruab nrab ntawm 3 tus qauv: 15 ft-lbf (20 J) yam tsawg kawg nkaus.
Ib qho piv txwv yam tsawg kawg nkaus: 12 ft-lbf (16 J).
Nco tseg: Cov neeg yuav khoom tuaj yeem teev qhov ntsuas qhov ntsuas qis dua (piv txwv li, -100℃F / -73 degree) lossis siab dua qhov muaj zog, uas yuav cuam tshuam rau hauv cov ntaub ntawv pov thawj.
Summary Table (rau daim hlau Tsawg dua lossis sib npaug li 2.5 hauv / 63.5 mm)
Daim ntawv thov tseem ceeb:
Kev kho cua sov: SA203 Qib B yog muab rau hauv qhov kev ua haujlwm zoo lossis ua kom zoo thiab ua kom sov kom ua tiav cov khoom no.
Primary Design Driver: Nws qhov kev xaiv tseem ceeb tsis yog lub zog siab, tab sis txheeb xyuas qhov qis -kub toughness. Lub zog tawm los ntawm nruab nrab (37.5 ksi) yog offset los ntawm nws cov kev cuam tshuam zoo heev ntawm -75℃F, ua rau nws yog ib qho kev xaiv classic rau cov hlab ntsha uas tsis tshua muaj siab.
Thickness Effect: Ib txwm siv cov cuab yeej muaj txiaj ntsig sib raug rau cov phaj tuab tiag tiag los ntawm ASME SA-203M lub rooj thaum tsim.
Daim ntawv pov thawj: Daim Ntawv Qhia Txog Kev Xeem Mill (MTR) yuav tsum tau lees paub ob qho tib si tensile zog thiab Charpy cuam tshuam tshwm sim ntawm qhov ntsuas kub.
Hauv cov ntsiab lus, cov khoom siv kho tshuab ntawm SA203 Qib B yog tus cwj pwm los ntawm lub zog nruab nrab ua ke nrog cov qauv tsim, lav toughness ntawm -75℃F, ua rau nws cov khoom siv txhim khu kev qha thiab dav siv rau kev siv cryogenic.
1. Dab tsi yog SA203 Qib B?
SA203 Qib B yog npib tsib xee- alloy steel phaj tsim rau qis- kub siab lub nkoj kev pabcuam, nrog rau cov ntsiab lus nickel nominal ntawm 2.25%, muab cov kev sib tw zoo rau cov ntawv thov qis dua li ntawm -75℃F (-60℃).
2.Cov tshuaj muaj pes tsawg leeg ntawm SA203 Qib B yog dab tsi?
Nws muaj pes tsawg leeg suav nrog kwv yees li 2.25% Nickel, nrog rau kev tswj hwm ntawm Carbon (max 0.17%), Manganese (max 0.70%), Silicon (0.15-0.40%), Phosphorus, thiab Sulfur.
3.Dab tsi yog cov khoom siv kho tshuab ntawm SA203 Qib B?
Cov cuab yeej tseem ceeb muaj xws li lub zog tensile yam tsawg kawg nkaus ntawm 65-85 ksi (450-585 MPa) thiab qhov tsawg kawg nkaus yield zog ntawm 37.5 ksi (260 MPa) rau daim hlau mus txog 2.5 nti tuab.
4.Yog SA203 Qib B yog carbon steel lossis hlau alloy?
Nws raug cais raws li npib tsib xee- alloy steel vim nws lub siab xav thiab tseem ceeb (2.25%) cov ntsiab lus nickel, uas sib txawv ntawm cov pa roj carbon steel thiab ua rau nws txhim kho qis- cov khoom kub.
5.Dab tsi yog qhov cuam tshuam toughness ntawm SA203 Qib B?
SA203 Qib B paub txog qhov zoo ntawm qhov tsis zoo, feem ntau xav tau Charpy V-Kev ntsuas qhov cuam tshuam ntawm -75℃F (-60 degree) nrog qhov tsawg kawg nkaus absorbed zog qhov tseem ceeb.
6.S203 Qib B txawv li qib A, D, thiab E li cas?
Qhov sib txawv tseem ceeb yog cov ntsiab lus nickel. Qib B muaj 2.25% Ni, thaum Qib A muaj 2.25% Ni tab sis qis zog, Qib D muaj 3.25% Ni, thiab Qib E muaj 3.50% Ni, muab kev nce qib zoo dua qis -kub toughness.
7.Dab tsi yog SA203 Qib B siv rau?
Nws yog feem ntau siv nyob rau hauv qis -kub siab cov hlab ntsha, cov tso tsheb hlau luam, thiab cov khoom siv rau kev siv xws li propane tanks, ethylene cia, thiab lwm yam kev pab cuam mus rau -75℃F (-60℃).
8.Yuav SA203 Qib B tuaj yeem welded?
Yog, nws muaj zoo weldability. Txawm li cas los xij, cov txheej txheem vuam yuav tsum siv tsawg -kev coj ua hydrogen, thiab sib txuam lossis haum nickel- alloy muab tub lim feem ntau pom zoo rau cov ntawv thov tseem ceeb.
9.Qhov kev kho cua sov rau SA203 Qib B yog dab tsi?
SA203 Qib B feem ntau yog muab nyob rau hauv qhov normalized los yog normalized thiab tempered mob kom ua tau raws li qhov yuav tsum tau txhua yam khoom thiab toughness.
10. Puas yog SA203 Qib B haum rau kev pabcuam cryogenic?
Yog lawm, nws yog cov khoom siv rau nruab nrab qis- kub (cryogenic) cov kev pabcuam, feem ntau siv rau cov ntawv thov hauv -50℃F txog -150℃F (-46℃rau -101 degree) ntau yam, ua rau nws haum rau ntau daim ntawv thov roj liquefied.
Tag nrho cov specification thiab cov ntsiab lus muaj nyob rau ntawm kev thov. Cov ntaub ntawv saum toj no yog muab rau kev taw qhia nkaus xwb. Rau kev tsim tshwj xeeb thov hu rau peb cov neeg ua haujlwm muag khoom.
