Nyob rau hauv lub ntiaj teb xav tau ntawm high-siab, high-corrosion ib puag ncig, fittings cov khoom siv tseem ceeb tshaj plaws rau hauv lub cev tseem ceeb, tshuaj lom neeg, thiab cov kws kho tshuab uas ua A182 F55 qhov tsis tshua muaj cov khoom siv rau cov engineers thiab cov neeg tsim qauv ua ntsej muag sib tw {}}
ASTM A182 F55 Lub hauv paus rau phau ntawv
ASTM A182 yog tus qauv ntsuas rau forged lossis cov xaim hluav taws xob ntau thiab cov khoom siv sib txuas ntawm cov qauv ntawm cov qauv no (UN182 F55 Lub zog, zoo heev corrosion resistance (tshwj xeeb yog cov roj av decosore thiab roj av, tshuaj lom neeg siv roj av zoo li F51 (FGD) tsis yog ib qho kev xaiv .
A182 F55 Tshuaj Ci
Qhov tshwj xeeb kev ua tau zoo ntawm A182 f55 bems ncaj qha los ntawm nws cov qauv ua kom zoo thiab lub zog {}}}} Cov ntsiab lus tseem ceeb xws li:
- Chromium (CR): {{24.0 - 26.0% - Siv cov txheej ua kom ruaj khov xide, hauv paus rau dav dav thiab hauv nroog corrosion.
- Nickel (NI): {{6.0 - 8.0% - Txav cov roj av, txhim kho kev nruj, thiab txhim kho kom tsis txhob txo cov kua qaub {}}
- Molybdenum (mo): {{{3.0 - 4.0% - Txawv ntau ntxiv rau qhov chaw ib puag ncig, tshwj xeeb yog cov lej sib txawv rau Super Duplex qeb.
- Nitrogen (n): {{0.20 - 0.30% - ib qho muaj zog txhawb nqa thiab txhawb nqa lub zog {}}
- Tungsten (w): {0.50 - 1.00% - ntxiv txhim kho kom pitting thiab crevice corrosion, ua yeeb yam synevdenum {}}
- Tooj liab (cu): {0.50 - 1.00% - txhim kho rau cov sulfuric acid thiab lwm yam acids.
- Manganese (MN): Tsawg dua lossis sib npaug rau 1 {2} 00 00 00% - deoxidizer thiab austenite stabilizer.
- Silicon (Si): tsawg dua lossis sib npaug ntawm 0 {. 50% - deoxidizer.
- Cov pa roj carbon (c): tsawg dua lossis sib npaug ntawm 0 {{. 030% - khaws cia tsawg los nag los nag lossis nag lossis cua sov.
- Phosphorus (p): tsawg dua lossis sib npaug ntawm 0 {{{{}}} 030% - tswj hwm kom txo qis thiab xeb.
- Sulphur (s): Tsawg dua lossis sib npaug ntawm 0 {{{}}} 010% - khaws cia tsawg los txhim kho lub zog kub thiab xeb tsis kam.
- Hlau (fe): tshuav nyiaj li .
Qhov no optimized A182 F55 tshuaj muaj cov tshuaj ua haujlwm nyob rau hauv ib tug lej pren ntau npaum li cas yog tus Pren {{4 4}} Tus pren tseem ceeb ntawm nws cov kev ua tau zoo tshaj plaws hauv kev txhoj puab heev chloride-muaj tshaj tawm .
A182 F55 Cov Khoom Siv Lub Cev
To taub txog cov yam ntxwv ntawm lub cev ntawm A182 F55 yog qhov tseem ceeb rau kev tsim qauv, kev tsim khoom, thiab kev pabcuam:
- Quav: kwv yees li 7.8 g / cm³ (0.282 lb / nyob rau hauv)
- Melting ntau: Feem ntau {1420 - 1460℃(2590 - 2660℃f).
- Thermal nthuav tawm coefficient (20 - 100 degree): kwv yees li 13 {{{{{{}} 0 x 10⁻⁶ / k.
- Thermal conductivity (20 degree): ncig ib ncig 15 w / (map k) .
- Kev kub kub tshwj xeeb (20 degree): kwv yees li 500 J / (KGB
. - Hluav taws xob tiv thaiv hluav taws xob: kwv yees li 0. 80 · m.
- Modulus ntawm elasticity (nro): kwv yees li 200 GPA (29 x 10⁶ PSI) .
Cov khoom siv lub cev no uas cuam tshuam thermal kev nyuaj siab thaum cua sov cycles, cua sov hloov efficiency, thiab hluav taws xob kev pabcuam hauv kev pabcuam .
A182 F55 Cov Khoom Siv Neeg Kho Tshuab
Cov cuab yeej ua haujlwm ntawm A182 F55 yog lub pob zeb ntawm nws cov txiaj ntsig zoo, muab cov txiaj ntsig zoo tshaj cov qauv ntawm cov qauv thiab cov qib qis:
- Tensile lub zog: 750 MPa (109 ksi) .
- Pepred lub zog: 550 MPA (80 KSI) .
- Elongation: 25% .
- Txo thaj chaw: 45% .
- Hardness: Feem ntau tau txwv rau 310 HB (Brinell), 32 HB (Rockwell C), lossis 327 hv (vickers).
- Kev cuam tshuam cov tawv: 45 j .
Cov khoom siv tau zoo tshaj plaws ua A182 F55 fur camer cov khoom muaj peev xwm ntawm kev ntsuas siab thiab kev ntxhov siab thaum khaws cov qauv txheej txheem kev ntseeg.
Microstructure, cua sov, thiab kev fab
A182 f55 possesses Duplex microstructure, zoo tagnrho muaj cov qauv sau) thiab 50%} Lub hauv paus rau nws lub zog thiab corrosion tsis kam {}
Ua tiav cov microstruction no zoo thiab yaj yuav muaj kev phom sij theem nrab (zoo li Sigma, chi) yuav tsum tau tswj nruj thaum chaw tsim:
Daws annealing: cov khoom siv tau ua kom sov rau qhov kub thiab txias feem ntau 1100-1160℃kom muab txhua yam hauv cov khoom daws.
Kev lom zem sai sai: tam sim ntawd tom qab annealing, feem ntau quenched, rau "khov ntawm micrrimentional thaum qeeb txias.
Forging, Machining, Vuam ntawm A182 F55 yuav tsum tau txais kev paub txog cov khoom siv hluav taws xob ua kom muaj zog thiab siv cov khoom siv kom haum thiab kev siv tawv ntawm Weld cheeb tsam {}}
Corrosion Kuj
A182 F55 tshuaj lom neeg ncaj qha txhais cov txhais lus rau kev zam corrosion tsis kam:
- Pitting and Crevice Corrosion: Excellent resistance in chloride environments due to high Cr, Mo, W, N. PREN >40 ua kom muaj kev ua tau zoo tshaj qhov qauv duplex thiab austeitic qib .
- Chloride kev ntxhov siab corrosion: siab tiv taus, ua rau nws haum rau cov kev pabcuam kub chloride uas Ausenitic qib yuav swb.
- General corrosion: ua tau zoo heev rau ntau cov acids, suav nrog sulfuric, acetic acids, tshwj xeeb thaum txhim kho cov ntsiab lus tooj liab {}}
- Yaig-corrosion: lub zog siab ua ke nrog kev ua zoo corrosion ua rau kev tawm tsam zoo rau kev tawm tsam kev tawm suab nrov uas muaj cov khib nyiab.
- Microbiologically cuam tshuam corrosion: zoo ua tsis zoo vim yog cov ntsiab lus siab .
Tag
A182 F55 (UNS S32760) super duplex stainless steel, defined by its stringent chemical composition and controlled processing, delivers an unmatched synergy of physical, chemical, and mechanical properties. Its exceptionally high strength (min. YS 550 MPa), superior corrosion resistance (PREN >40), tshwj xeeb tawm tsam pitting, thiab chloride scc, sib xyaw ua ke nrog kev ntseeg tau ntev, kev tiv thaiv zoo, thiab xav tau los ntawm cov ntawv sau tseem ceeb tshaj plaws hauv kev xeb thiab Kev ntxhov siab ib puag ncig.}}}}}} nkag siab cov khoom siv tau zoo thiab siv nyiaj rau cov khoom muaj sia ntawm.
