1. ASTM A671 CB60 Class 10 steel yeeb nkab yog dab tsi?
A carbon steel hluav taws xob-fusion-welded (EFW) yeeb nkabtsim rauqis- kub thiab nruab nrab- kev pabcuam siab, ua raws liASTM A671-25 Cov khoom siv raw khoom.
CB 60: Qhia acarbon{0}}manganese steel qibnrog txhim khu kev cuam tshuam toughness (kuaj ntawm-20 ° F / -29 ° C).
Chav Kawm 10: Qhia aTsawg tshaj tawm lub zog ntawm 10 ksi (69 MPa), feem ntau yog siv rau cov ntawv tsis yog -tseem ceeb.
2. Class 10 feem ntau siv rau qhov twg?
Tsawg-Pressure Systems: Kev faib dej, HVAC, thiab cov kav dej.
Cryogenic Auxiliary Kab: Secondary cooling systems (tsis yog thawj qhov kev pabcuam cryogenic).
Kev txhawb nqa tus qauv: Tsis yog- cov khoom siv siab hauv cov nroj tsuag.
3. CB60 txawv li cas ntawm CA55 lossis lwm qib?
Khoom siv: Cov ntsiab lus manganese siab dua (~ 1.20%) hauv CB60 txhim kho toughness tab sis txo weldability vs. CA55.
Lub zog: Chav Kawm 10 yog qhovqis zog qibhauv ASTM A671, txwv kev siv nyob rau hauv siab - ib puag ncig kev ntxhov siab.
Nqi: 15–20% pheej yig dua CA55 vim yooj yim chemistry thiab kev xeem yuav tsum tau.
4. Kev tsim khoom tseem ceeb thiab kev xeem yuav tsum tau ua?
Fabrication: EFW txheej txheem nrog xaiv tau PWHT (Post-Weld Heat Treatment) raws li kev pabcuam.
Kev sim:
Neeg kho tshuab: Tensile thiab yield zog ib ASTM A370 (tsis muaj qhov yuav tsum tau kuaj rau chav kawm 10).
NDT: Kev tshuaj xyuas qhov muag lossis qhov chaw radiography (tag nrho RT / UT tsuas yog tias tau teev tseg).
Daim ntawv pov thawj: Basic MTRs (Mill Test Reports) npog cov tshuaj muaj pes tsawg leeg thiab tensile zog.
5. Cov qauv tsim nyog thiab cov lus qhia txog kev yuav khoom rau xyoo 2025?
Thawj StandardASTM A671-25 (kuj kho tshiab).
Cov Codes ntxiv: ASME B31.3 rau cov txheej txheem piping (yog siv nyob rau hauv industrial systems).
Cov Lus Qhia:
Paub meejlub sijhawm xa khoom xa tuaj(~ 8-12 lub lis piam rau cov qauv loj).
Tshawb xyuasregional sib npaug(piv txwv li EN 10217-1 P235TR2 hauv EU).
