1. ASTM A671 CA55 Class 31 Steel Pipe yog dab tsi?
A:Nws sawv cev raupinnacle ntawm hluav taws xob-fusion-welded (EFW) carbon steel yeeb nkab tshuab, engineered rauultra-siab-siab (31,000 psi hydrostatic test)thiabcryogenic tej yam kev mob(hauv qab-50 ° F / -45 ° C).
"CA55": Ua kom pom zoo chemistry (C Tsawg dua lossis sib npaug rau 0.22%, Si / Mn ratio tswj) nrogTxhim kho Charpy cuam tshuam cov cai(min 35J ntawm -50℃F).
Ntsiab Innovations:
Tag nrho -Digital ntxaib tshuaj ntsuam(PAUT + AI-tsav radiography).
Quench & temper kub khorau unmatched toughness.
Ua raws liASTM A671-2025 Cov Lus Qhia Tshwj XeebthiabASME B31.12rau kev pabcuam hydrogen.
Daim ntawv thov: Tom ntej no -gen hydrogen pipelines, nuclear fusion reactors, thiab Mars lub hom phiaj cryogenic systems.
2. Chav Kawm 31 Hloov Cov Qauv Ua Haujlwm Li Cas?
A:
| Parameter | Chav Kawm 31 | Chav Kawm 30 | Chav Kawm 23 |
|---|---|---|---|
| Kuaj Siab | 31,000 psi | 30,000 psi | 23,000 psi |
| Phab ntsa Thickness | Ntau tshaj +(patented alloy tsim) | Qhov siab tshaj plaws | Hnyav |
| Nqi Efficiency | 40% hwmdhau Class 30 | 25-30% ntawm Chav Kawm 23 | Lub hauv paus |
| Kev tawg: Chav Kawm 31 qhiananostructured grain refinementrau 15% siab zog tiv thaiv. |
3. Daim ntawv pov thawj thiab kev xeem cov txheej txheem siv li cas?
A:
Cov qauv:
ASTM A671 (2025) +ASME Section VIII Div. 3(lwm txoj cai).
ISO 21009-3rau kev tiv thaiv cryogenic.
Kev ntsuam xyuas tseem ceeb:
Hydrostatic xeem: 31,000 psi rau20 vib nas this(cov ntaub ntawv kev lag luam).
NDT: AI- txhawb nqa3D xam tomography (CT) scanning.
Charpy Impact9 x:sam-50 ° F / -45 ° C(min 35J avg, 30J ib tus nqi).
Xaiv tau: Helium leak testrau qhov chaw- cov ntawv thov qib.
4. Txiav- Ntug Fabrication & Vuam Tshuab
A:
Vuam:
Kev sib txhuam- do vuam (FSW)rau seam pob qij txha +electron beam vuamrau fittings.
Filler hlau:EH14-K3(nrog tsawg -lub ntiaj teb microalloying).
Kev kho cua sov:
Austemperingntawm 1500℃F (815 degree) rau bainitic microstructure.
Cryogenic stabilization ntawm-100 ° F (-73 ° C)post-mob siab.
Tolerances:
OD:±0.4%(laser{0}}calibrated).
Phab ntsa:+7%/-1%(aerospace-qib precision).
5. Daim Ntawv Thov Frontier ntawm Chav Kawm 31
A:
Kev hloov hluav taws xob:
10,000 psi hydrogen kis tau tus mob network.
Tokamak reactor plasma ntim cov nkoj.
Kev tshawb nrhiav chaw:
Lunar puag cryogenic oxygen cia.
SpaceX Starship methane roj kab.
Kev lag luam:
-100℃Fkua nitrogen superconducting hlau nplaum vaj tse.
