1. Dab tsi txhais A671 CJA115 Class 52 Steel Pipe?
Teb:
CovA671 CJA115 Chav Kawm 52sawv cev rausiab tshaj -tier hluav taws xob- fusion-welded (EFW) carbon steel yeeb nkabRaws li ASTM A671, engineered rau:
Ultra-tsawg- kev pabcuam kub: -75℃F (-60 degree) yam tsawg kawg nkaus tsim kub
-kev siv siab heev52,000 psi (3,586 bar) hydrostatic test siab
Tseem ceeb infrastructure: Muab ASTM A671 ua raws li cov khoom siv CJA115 (≈ASTM A537 Chav Kawm 1) rau kev ua haujlwm tsis sib xws.
2. Cov qauv twg tswj hwm nws qhov kev tsim khoom?
Teb:
Thawj Standard: ASTM A671 (EFW kav dej rau qis-kev pabcuam kub)
Ua raws li cov khoom siv:
Tshuaj: C Tsawg dua lossis sib npaug li 0.24%, Mn 0.70–1.35%, P / S Tsawg dua lossis sib npaug li 0.025%
Mechanical: Charpy V-notch >50J ntawm -75℃F
Kev sim:
100% automated UT / RT +52,000 psi hydrostatic test
Dye penetrant tshuaj xyuas rau weld kev ncaj ncees
3. Cov khoom tseem ceeb ntawm kev siv tshuab?
| Khoom | Tus nqi | Qhov tseem ceeb |
|---|---|---|
| Tensile zog | Ntau dua lossis sib npaug rau 550 MPa (80 ksi) | Cov qauv kev ncaj ncees |
| Yield zog | Ntau dua lossis sib npaug rau 345 MPa (50 ksi) | Kev tiv thaiv siab |
| Impact Toughness | >50J ntawm -75℃F | Cryogenic kev ntseeg tau |
4. Nws feem ntau siv qhov twg?
Kev Siv Zog:
Subsea pipelines (>8,000m qhov tob)
Cryogenic hydrogen thauj (-253 degree)
Aerospace:
Qhov chaw tso tawm cryogenic roj systems
Nuclear:
Gen-IV reactor siab ciam ciam
5. Chav kawm 52 ua li cas thiaj li dhau chav kawm 51?
| Yam | Chav Kawm 52 | Chav Kawm 51 |
|---|---|---|
| Kev ntsuas siab | +2%(52k vs 51k psi) | Kev txhim kho evolutionary |
| Nqi Efficiency | ~ 5-8% siab dua | Justified los ntawm ncua lifespan |
| Innovation Focus | AI-ua kom zoo dua cov nplej | Lub hauv paus automation |
