Dab tsi yog qhov ntsuas siab rau ASTM A269 yeeb nkab?
ASTM A269 kev ntsuas siab tsis yog ib qho txiaj ntsig, tab sis nyob ntawm cov khoom siv yeeb nkab tshwj xeeb, xws li cov khoom siv qib (xws li, 304L, 316), phab ntsa thickness, thiab sab nraud txoj kab uas hla. Qhov siab tshaj plaws tso cai ua haujlwm siab yog suav nrog cov qauv P=2St / D, qhov twg St yog qhov kev ntxhov siab tso cai (xws li, 20 000 psi rau ntau degrees ntawm chav tsev kub), t yog qhov tsawg kawg nkaus phab ntsa thickness, thiab D yog sab nraud txoj kab uas hla. Piv txwv li, ib qho kev ntsuas siab rau 304L stainless hlau yeeb nkab nrog rau sab nraud ntawm 3/4 nti thiab phab ntsa tuab ntawm 0.049 nti yog 2450 psi, nrog rau qhov kub ntawm -20 txog 100℃F.
Txoj kev ntsuas siab
Qhov tso cai ua haujlwm siab ntawm ASTM A269 kav dej feem ntau suav nrog raws li cov hauv qab no:
Tso cai Stress (S-tus nqi): Nyob rau hauv qhov kub ntawm -20 ° F mus rau 100 ° F (-28 ° C mus rau 37 ° C), qhov kev ntxhov siab tso cai feem ntau suav tias yog 20 000 psi (137.8 MPa).
Kev nyab xeeb yam: Ib qho kev nyab xeeb ntawm 4: 1 feem ntau yog siv, uas txhais tau hais tias kev ua haujlwm siab yog 25% ntawm qhov theoretical tawg siab.
Kev suav cov mis: Kev ua haujlwm siab feem ntau yog xam los ntawm Barlow tus qauv.
Qhov twg:
P yog qhov tso cai ua haujlwm siab (psig)
S yog qhov tso cai rau kev ntxhov siab (psi)
t yog qhov tsawg kawg nkaus phab ntsa thickness (hauv)
D yog sab nraud ntawm cov yeeb nkab (hauv)
ASTM A269 Siab ntsuas lub rooj
| Sab nraud Diameter (OD) | Phab ntsa Thickness (EP) | Ua haujlwm siab (PSI) | Theoretical tawg siab (PSI) |
|---|---|---|---|
| 1/4 "(6.35mm) | 0.035 "(0.89mm) | 5100 | 20400 |
| 1/4 "(6.35mm) | 0.049 "(1.24 hli) | 7500 | 30000 |
| 3/8 "(9.53mm) | 0.035 "(0.89mm) | 3300 | 13200 |
| 3/8 "(9.53mm) | 0.049 "(1.24 hli) | 4800 | 19200 |
| 1/2 "(12.70mm) | 0.049 "(1.24 hli) | 3500 | 14000 |
| 1/2 "(12.70mm) | 0.065 "(1.65mm) | 4700 | 18800 |
| 3/4 "(19.05mm) | 0.065 "(1.65mm) | 3000 | 12000 |
| 1" (25.40 hli) | 0.065 "(1.65mm) | 2200 | 8800 |
| 1" (25.40 hli) | 0.083 "(2.11 hli) | 2900 | 11600 |
ASTM A269 Tube Chemical Composition
| Stainless hlau coiled tube | c | mn | Q | Yog lawm | Yog lawm | mo | Tsis yog |
|---|---|---|---|---|---|---|---|
| TP 316 L | 0.035 ib | 2 | 0.045 ib | 0.03 ib | 1 | 2.0-3.0 Nws | 10.0-14.0 Nws |
| TIAB SA 304 | 0.08 ib | 2 | 0.045 ib | 0.03 ib | 1 | - | 8.0-11.0 Nws |
| TIAB SA 316 | 0.08 ib | 2 | 0.045 ib | 0.03 ib | 1 | 2.0-3.0 Nws | 11.0-14.0 Nws |
| TP 304 L | 0.035 ib | 2 | 0.045 ib | 0.03 ib | 1 | - | 8.0-13.0 Nws |
ASTM A269 elastic txwv
Lub zog tawm los tau teev tseg hauv ASTM A269 txawv nyob ntawm qib ntawm cov khoom. Cov qib TP304 thiab TP316 muaj qhov tsawg kawg nkaus lub zog ntawm 30 ksi (205 MPa), thaum TP304L thiab TP316L ncav cuag qhov tsawg kawg nkaus ntawm 25 ksi (170 MPa). Raws li nws yog tus qauv rau cov hlau tsis muaj steel, nws cov nqi pes tsawg nyob ntawm cov tshuaj muaj pes tsawg leeg thiab cov txheej txheem kho cua sov.
| Khoom siv | Tsawg tensile zog (Ksi / MPa) | Tsawg tshaj tawm lub zog (Ksi / MPa) | Tsawg kawg elongation (%) |
|---|---|---|---|
| TIAB SA 316 | 75 (515) | 30 (205) | 35 |
| TP 304 L | 70 (485) hnub | 25 (170) hnub | 35 |
| TP 316 L | 70 (485) hnub | 25 (170) hnub | 35 |
| TIAB SA 304 | 75 (515) | 30 (205) | 35 |
ASME SA269 stainless hlau cua sov raj luj lub rooj
| Qhov hnyav ib ' meter ' (kg / m) | OD ntsuas × Phab ntsa thickness |
|---|---|
| 3.94 ib | 50.8mm × 3mm |
| 2.21 | 38.1mm × 2mm |
| 0.77 ib | 19mm × 1 hli |
| 1.37 ib | 25.4mm × 1.5 hli |
| 0.103 ib | 6.35mm × 0.25mm |
| 0.32 ib | 12.7mm × 0.5 hli |
| 0.27 ib | 10mm × 0.5 hli |
| 0.53 ib | 15.88mm × 0.75 hli |
ASTM A269 Kev Pom Zoo
| Kev kam rau siab % (-) | Kev kam rau siab % (+) | NPS Loj/Kev piav qhia |
|---|---|---|
| 12.5 ib | 15.0 Nws | 3 ~ 18, t / D piv ＞ 5% |
| 12.5 ib | 17.5 Nws | Ntau tshaj los yog sib npaug rau 20, welded raj |
| 12.5 ib | 20.0 Nws | 1/8 - 2 1/2 |
| 12.5 ib | 22.5 ib | 3 ~ 18, t / D ratio Tsawg dua lossis sib npaug li 5% |
| 12.5 ib | 15.0 Nws | Ntau dua lossis sib npaug rau 20, seamless raj, t / D ＞ 5% |
| 12.5 ib | 22.5 ib | Ntau dua lossis sib npaug rau 20, seamless raj, t / D Tsawg dua lossis sib npaug li 5% |
ASTM A269 Seamless Yeeb Nkab Kub Kev Kho Mob
| Khoom siv | Hom kev kho mob | Qhov kub thiab txias F (degree) |
|---|---|---|
| A269 316L | Kev daws Annealing | Xyoo 1900 (1040) |
| A 269 304 | Kev daws Annealing | Xyoo 1900 (1040) |
| A269 304L | Kev daws Annealing | Xyoo 1900 (1040) |
| A 269 316 | Kev daws Annealing | Xyoo 1900 (1040) |
Dab tsi yog qhov txawv ntawm ASTM A269 thiab ASTM A213 siab ntsuas?
A269 yog rau "Kev Pabcuam General" (kua kab, ntsuas).
A213 yog rau "Boilers thiab Kub Exchangers".
A213 tau dhau los ua qhov kev sim nruj dua (hardness, flattening, flaring) kom muaj kev nyab xeeb hauv qhov kub thiab txias. Txawm li cas los xij, rau ntau daim ntawv thov kua dej, lawv cov kev ntsuas siab zoo ib yam.
Thaum xaj ASTM A269 rau cov ntawv thov siab, ib txwm qhia:
Seamless los yog welded (seamless rau siab tshaj plaws kev nyab xeeb).
Nto tiav (ci annealed yog qhov zoo tshaj plaws rau corrosion kuj thiab accessory compatibility).
Kev kam rau siab (kom paub tseeb tias koj ua tau raws li qhov yuav tsum tau ua kom nruj rau koj cov khoom siv tshwj xeeb).
Yog tias koj muaj qhov yuav tsum tau ua rau ASTM A269 stainless hlau yeeb nkab, thov koj xav tso qhov kev txiav txim. GNEE muaj cov khoom muag loj ntawm cov khoom muag zoo tshaj plaws rau koj xaiv. Lawv tuaj yeem ua tiav rau hauv ntau hom khoom siv, suav nrog seamless thiab welded qhov chaw, thiab muab ntau yam kev kho deg. Rau cov ncauj lus kom ntxaws txog tshuaj muaj pes tsawg leeg thiab cov qauv dawb, thov hu rau peb lub Hoobkas tam sim ntawd. Peb muab cov nqi sib tw thiab kev pabcuam zoo heev.
Peb cov khoom
Yog tias koj xav tau cov ntsiab lus ntxiv thiab cov nqi ntawm cov khoom, thov hu rau peb hauv lub sijhawm! Email:es@gescosteel.com
