1. A671 CH115 Class 11 Steel Pipe yog dab tsi?
Teb:
A671 CH115 Chav Kawm 11 yog ibhluav taws xob-fusion-welded (EFW) carbon steel yeeb nkabUa raws li ASTM A671 tus qauv, qhov twg:
"CH115"npe acarbon steel qib nrog tswj chemistry(Mn / Si cov ntsiab lus siab dua li qib CG tus qauv).
"Klass 11"qhia anruab nrab- kev ntsuas siab, nyob nruab nrab ntawm Chav Kawm 10 thiab Chav Kawm 22.
Cov yam ntxwv tseem ceeb:
Siab Muaj Peev Xwm: Haum rauTsawg dua lossis sib npaug li 11 MPatsim siab.
Qhov kub thiab txias: Txuj kev pabcuam los ntawm-20℃rau 175 degree(-4 ° F txog 347 ° F).
Kev tsim kho: Longitudinal seams welded ntawmSubmerged arc vuam (SAW)nrog kev xaiv tom qab-weld heat treatment (PWHT).
2. Chav Kawm 11 feem ntau siv nyob qhov twg?
Teb:
Cov ntawv thov uas muaj xws li:
Muaj Txheej Txheem Piping: Tshuaj pub kab, compressed cua tshuab.
Dej Infrastructure: Kev xa dej hauv nroog (tsis yog- tuaj yeem).
Roj & Roj: Tsawg-cov kab sib sau ua ke (tsis yog-kev pabcuam qaub).
Nco tseg: Tsis pom zoo raucryogenic lossis siab - voj voog qaug zogib puag ncig vim tsis tshua muaj kev cuam tshuam toughness.
3. Chav Kawm 11 piv rau Chav Kawm 10 thiab Chav Kawm 22 li cas?
Teb:
| Parameter | Chav Kawm 11 | Chav Kawm 10 | Chav Kawm 22 |
|---|---|---|---|
| Kev ntsuas siab | Tsawg dua lossis sib npaug li 11 MPa | Tsawg dua lossis sib npaug li 10 MPa | Ntau dua lossis sib npaug li 22 MPa |
| Kev sim | Spot RT + yeem UT | Spot RT (tsawg kawg) | 100% RT + yuav tsum tau UT |
| Khoom Toughness | Basic Charpy (cov neeg siv khoom- tau qhia) | Tsis xav tau | Yuav tsum tau qis- ntsuas kub |
Qhov txawv tseem ceeb: Chav Kawm 11 muaj asib npaug ntawm cov nqi thiab kev ua haujlwmrau nruab nrab -siab tshuab.
4. Cov khoom siv thiab cov khoom siv kho tshuab
Teb:
Tshuaj muaj pes tsawg leeg:
Carbon: Tsawg dua lossis sib npaug li 0.27%, Manganese: 0.90-1.30%, Silicon: 0.15-0.40%.
Mechanical Properties:
Tensile zog:Ntau dua lossis sib npaug li 415 MPa
Yield zog:Ntau dua lossis sib npaug li 240 MPa
Charpy V-ntu: Yeem (feem ntau ntau dua lossis sib npaug rau 20J ntawm 0℃yog tias tau teev tseg).
Qhov ntev: Qhov ntau thiab tsawg los ntawm2" rau 36" OD, phab ntsa thickness perASME B36.10.
5. Fabrication thiab Quality Assurance
Teb:
Vuam: SAW with10% qhov chaw radiography (RT)los ntawm lub neej ntawd (upgradable mus rau 100% ib qho kev thov).
Kev sim:
Hydrostatic Test ntawm1.5x tsim siab.
Kev kuaj Hardness rau PWHT pov thawj (yog tias siv).
Daim ntawv pov thawj: TxujMTRs (Mill Test Reports)nrog yeemISO 9001 ntawv pov thawj.
Kev Ua Raws CaiASTM A671 (thawj), nrog rau kev sib twASME B31.3rau txheej txheem kav.
