1. Cov ntaub ntawv tseem ceeb: Kev xaiv
Standard System: German DIN / European EN txuj.
Khoom Naj Npawb: 1.5682(Qhov no yog thawj tus cim).
Qib Steel: Feem ntau sib raug rau13CrMo4-5los yog16 CrMo4, nyob ntawm qhov kev xa khoom thiab tus qauv version.
Hom khoom: Chromium{0}}Molybdenum Alloy Steel, faib ua atshav kub-resistant steelrau nruab nrab -kev pabcuam kub.
2. Hom tshuaj muaj pes tsawg leeg (%)
Qhov no yog qhov qis- alloy steel qhov twg Chromium (Cr) thiab Molybdenum (Mo) yog qhov tseem ceeb rau kev txhim kho siab - qhov kub thiab txias.
Cov pa roj carbon (C): 0.10 - 0.18
Silicon (Si): Tsawg dua lossis sib npaug li 0.35
Manganese (Mn): 0.40 - 0.70
Phosphorus (P): Tsawg dua lossis sib npaug rau 0.025
Sulfur (S): Tsawg dua lossis sib npaug rau 0.020
Chromium (Cr): 0.70 - 1.00 (Txhim kho oxidation & corrosion kuj, siab -lub zog kub)
Molybdenum (hli): 0.40 - 0.50 (Qhov tseem ceeb txhim kho siab - qhov kub thiab txias tsis kam)
3. Cov yam ntxwv tseem ceeb & cov cuab yeej
Zoo heev High -Temperature Properties: Kho kom zoocreep zogthiabntev - lub zogntawm qhov kub siab (feem ntau txog li 550℃- 580 degree), uas yog cov cuab yeej tseem ceeb tshaj plaws rau boiler raj.
Zoo Oxidation Resistance: Chromium pab tsim cov txheej txheem tiv thaiv oxide nyob rau hauv chav los yog cov pa roj cua.
Weldability zoo thiab kub ua haujlwm: Tau welded txaus siab nrog preheating thiab post-weld heat treatment (PWHT).
Nruab nrab Corrosion Resistance: Muaj kev tiv thaiv zoo dua rau dej / chav dej corrosion piv rau cov pa roj carbon steels.
4. Cov ntawv thov tseem ceeb
Tshwj xeeb tsim los rau siab - kub thiab siab - cov khoom siv siab:
Fais fab chaw nres tsheb Boilers: Superheater raj, reheater raj, headers, lub ntsiab chav kav.
Muaj boilers: Cov kav dej kub hauv qhov siab - qhov kub thiab txias.
Petrochemical cog: Tubes rau siab -kub tawg rauv, hloov kho qhov cub.
Piping thiab Presses Vesselshauv lwm cov khoom siv siab -kub/siab.
5. Cov qauv tsim nyog & Kev xa khoom xa tuaj
Khoom Txheem:
TS EN 10216-2: Seamless steel tubes rau lub hom phiaj siab - Ntu 2: Tsis yog- alloy thiab alloy steel tubes nrog qhov ntsuas kub siab.
TIAB SA 17175: Thaum tshav kub kub- tawm tsam seamless steel raj (tus qauv qub, feem ntau hloov los ntawm EN).
Kev Xa Khoom: Feem ntau muab rau hauvnormalized + temperedmob los xyuas kom meej qhov zoo microstructure thiab mechanical zog rau siab -kub kev pab cuam.
6. Qib sib npaug / sib piv
Kev sib piv thoob ntiaj teb:
USA (ASTM / ASME): A335 P11los yogA213 T11yog cov sib npaug ze tshaj plaws.
Tuam Tshoj (GB): 15 CrMoGyog cov qib zoo sib xws thiab siv dav hauv cov chaw tsim hluav taws xob hauv tsev.
Nyiv (JIS): SIB 22los yogSTPA 22.
Cov ntsiab lus
1.5682 (13CrMo4-5)yog ib qho classic thiab txhim khu kev qhachromium-molybdenum tshav kub-resistant steel. Nws yog cov khoom siv tseem ceeb rau kev tsim khoomnruab nrab- kub, siab- siab boiler thiab siab hlab ntsha tubing. Nws lub ntsiab kom zoo dua yog nyob rau hauv nwscreep kuj thiab ntev - lub sij hawm stability nyob rau hauv lub sij hawm ntev siab - kub kev pab cuam.
Thaum muab los yog siv cov khoom no, nws yog ib qho tseem ceeb kom paub meej tias cov khoom raws nraim (piv txwv li, EN 10216-2), kev xa khoom specifications, thiab yuav tsum tau kuaj xyuas / xeem daim ntawv pov thawj kom ua tau raws li tag nrho cov qauv tsim thiab kev ua haujlwm.
