Txheej txheem cej luam
15 MOGyog aqis- hlau alloytshwj xeeb tsim los rau siab -kub kev pabcuam, feem ntau hauvboiler systems thiab siab hlab ntsha. Lub "G" hauv nws lub npe qhia tias nws yog seamless steel raj rau siab -lub hom phiaj siab.
1. Decoding lub npe: "15MoG"
15: Sawv cev kwv yeescov ntsiab lus carbonmultiplied los ntawm 100. Yog li, 15 txhais tau tias txog0.15% carbon. Qhov no muab lub zog zoo thiab weldability.
Mo: Lub cim tshuaj rauMolybdenum. Qhov no yog qhov tseem ceeb alloying keeb.
G: Hauv Suav cov qauv (los ntawm qhov kev xaiv no los), "G" (Gao Ya - 高压) txhais tau tiasSiab -siab. Nws qhia tau hais tias cov yeeb nkab yog npaj rau siab - kev pabcuam siab, xws li boilers thiab superheaters.
Key Takeaway:15MoG yog cov pa roj carbon steel nrog me me tab sis tseem ceeb ntxiv ntawm Molybdenum (feem ntau 0.25-0.35%) los txhim kho nws cov khoom kub.
2. Khoom Specifications
15MoG yog tus qauv tsim feem ntau hauv Suav tus qauvwb 5310. Cov qauv no sib npaug rau lwm cov qauv thoob ntiaj teb rau boiler raj.
Primary Standard: GB 5310 - Seamless Steel Tubes rau siab -Pressure Boilers
Similar/Equivalent Qib:
Lub teb chaws Yelemees / DIN: 15 hmo 3(EN 10216-2)
Teb chaws USA / ASTM: ASTM A335 Gr. P1
International:Zoo ib yam liTS EN ISO 9329-1 P265GHtab sis nrog tshwj xeeb Molybdenum tswj.
3. Tshuaj muaj pes tsawg leeg (Hom ib GB 5310)
| Lub ntsiab | Cov ntsiab lus (%) |
|---|---|
| Cov pa roj carbon (C) | 0.12 - 0.18 |
| Manganese (Mn) | 0.40 - 0.80 |
| Silicon (Si) | 0.17 - 0.37 |
| Molybdenum (hli) | 0.25 - 0.35 |
| Phosphorus (P) | Tsawg dua lossis sib npaug li 0.025 |
| Sulfur (S) | Tsawg dua lossis sib npaug li 0.025 |
4. Cov Khoom Tseem Ceeb thiab Vim Li Cas Molybdenum tseem ceeb
Qhov sib ntxiv ntawm Molybdenum muab ntau qhov txiaj ntsig tseem ceeb tshaj cov pa roj carbon monoxide (zoo li ASTM A106 Gr. B):
Nce qib siab -Temperature Strength (Creep Strength):Qhov no yog qhov khoom tseem ceeb tshaj plaws. "Creep" yog qhov qeeb, mus tas li deformation ntawm cov khoom nyob rau hauv kev ntxhov siab ntawm qhov kub thiab txias. Molybdenum ua kom cov hlau muaj zog, tso cai rau nws tiv taus cov kev kub ntxhov siab ntawm qhov kub siab (feem ntau txog ~ 500℃/ 930℃F) yam tsis muaj deforming dhau sijhawm.
Txhim kho Microstructural Stability:Molybdenum pab cov hlau khaws nws lub zog thiab tiv thaiv nws los ntawm nkig thaum lub sij hawm ntev - raug tshav kub.
Enhanced Hardening Peev Xwm:Nws txhim kho lub hardenability ntawm cov hlau, uas muaj txiaj ntsig zoo rau nws lub zog tag nrho.
5. Kev siv ntau
15MoG kav yog siv nyob rau hauv qhov tseem ceeb ntawm boiler systems uas ua hauj lwm nyob rau hauv nruab nrab mus rau kub kub:
Superheater Tubes:Cov raj no raug rau cov pa kub tshaj plaws . 15MoG lub zog creep yog qhov tseem ceeb ntawm no.
Reheater Tubes
Siab -Cov kav dej kub (Cov Kab Tseem Ceeb)
Headers thiab Manifolds
Thaum tshav kub kub Exchangers thiab Pressure Vesselshauv cov chaw tsim hluav taws xob thiab cov chaw tsim khoom.
6. Qhov zoo thiab qhov tsis zoo
Qhov zoo:
Tus nqi zoo heev -Kev ua tau zoo:Nws yog tus nqi pheej yig dua li siab dua - alloy steels (xws li Chromium-Moly steels) tab sis muaj qhov ua tau zoo dua siab dua - qhov kub thiab txias dua li carbon steel.
Zoo Weldability:Nws tuaj yeem welded siv cov txheej txheem sib txawv, txawm hais tias tsim nyog ua ntej- cua sov thiab tom qab-weld heat treatment (PWHT) cov txheej txheem yuav tsum ua raws.
Pov thawj Reliability:Ib qho zoo- cov khoom tsim nrog keeb kwm ntev ntawm kev siv nyab xeeb hauv kev tsim hluav taws xob.
Qhov tsis zoo:
Limited Temperature Range:Nws tsis haum rau qhov kub siab heev (siab dua ~ 550 degree) qhov twg oxidation kuj thiab siab dua creep zog yog xav tau. Rau cov xwm txheej no, qib nrog Chromium (xws li, T11, T22, T91) yog siv.
Yuav tsum tau kho cua sov:Tom qab welding, tom qab-weld kev kho cua sov feem ntau yuav tsum tau los txo cov kev ntxhov siab thiab kho cov microstructure hauv tshav kub- thaj tsam cuam tshuam.
Cov lus piav qhia
| Feature | Description of 15MoG |
|---|---|
| Hom khoom | Tsawg-Alloy Steel (Carbon-Molybdenum) |
| Main Standard | GB 5310 (Tuam Tshoj) |
| Ntsiab Alloying Element | Molybdenum (Mo) ~ 0.30% |
| Kev siv thawj zaug | Siab -kub boiler raj, superheaters, chav kav dej |
| Cov khoom tseem ceeb | Zoo heev creep zog ntawm elevated kub |
| Qhov kub thiab txias | Txog li 500℃- 550℃(930℃F - 1020℃F) |
| Qib sib piv | 15Mo3 (DIN), A335 P1 (ASTM) |
Hauv kev xaus,15MoG yog cov khoom siv ua haujlwm rau nruab nrab -qhov kub siab kub qhov chaw hauv boilers. Nws muab qhov sib npaug tseem ceeb ntawm siab - qhov kub thiab txias, weldability, thiab tus nqi- kev ua tau zoo, ua rau nws yog ib qho tseem ceeb hauv lub tsev thaiv rau lub zog thiab txheej txheem kev lag luam piping systems.
