Khoom nta
Zoo heev Thermal Shock thiab Thermal Fatigue Resistance
Cov ntsiab lus qis carbon ntawm Stellite 21 ua rau muaj kev sib faib nruab nrab thiab tsis sib xws ntawm carbides, nrog rau cobalt matrix uas muaj qhov zoo ductility. Lub alloy yog resistant rau thermal tawg thaum lub sij hawm kub ceev cycling thiab tuaj yeem tiv taus thermal shocks. Nws yog qhov tshwj xeeb tshaj yog tsim rau cov ntawv thov uas muaj qhov kub thiab txias, xws li nuclear fais fab nroj tsuag li qub, roj turbine Cheebtsam, thiab kub ua hauj lwm tuag.
Zoo sib npaug ntawm hnav tsis kam thiab toughness
Qhov hnyav hnyav hauv cam khwb cia lossis weld- qhov kev tso nyiaj yog HRC 28-38 (kwv yees HV 270-380), muab kev hnav zoo dua li cov hlau tsis huv zoo tib yam thaum tswj kev ua haujlwm siab tawv (Charpy V-tshuaj cuam tshuam lub zog ntawm kwv yees li 20-40 J). Piv rau cov pa roj carbon monoxide high-carbon cobalt-based alloys (piv txwv li, Stellite 1, 6, 20), Stellite 21 nthuav tawm qhov ua tau zoo dua, ua rau nws tsim nyog rau cov khoom raug cuam tshuam thiab hnav.
Superior Corrosion Resistance
Nrog kwv yees li ntawm 28% chromium cov ntsiab lus, Stellite 21 qhia tau zoo corrosion kuj nyob rau hauv oxidizing acids (xws li, nitric acid), nruab nrab concentrated non- oxidizing acids (xws li, Tsawg dua los yog sib npaug rau 50% sulfuric acid), thiab alkaline daws. Nws ua tau zoo tshwj xeeb nyob rau hauv siab - kub thiab siab - qhov dej siab ib puag ncig, ua cov khoom qub rau nuclear reactor valve sealing nto. Nyob rau hauv dej hiav txwv thiab chloride ib puag ncig, nws feem ntau nthuav tawm pitting corrosion es tsis zoo corrosion.
Zoo Machinability thiab Weldability
Stellite 21 yog ib qho ntawm cov qib machinable thiab weldable tshaj plaws ntawm cobalt-raws li alloys. Nws tuaj yeem ua rau saum npoo- tawv tawv siv ntau yam txheej txheem weld overlay xws li PTA, TIG, MIG, thiab oxy-acetylene vuam, uas tsis tshua muaj kev cuam tshuam rau kub tawg. Preheating rau 200-350℃thiab tswj tom qab vuam txias yog feem ntau txaus thaum vuam. Kev txwv tsis pub siv yog ua tau nyob rau hauv cov mob annealed, nrog rau qhov kawg tiav pom zoo los ntawm kev sib tsoo lossis hluav taws xob tawm machining (EDM).
Technical Specifications
Tshuaj muaj pes tsawg leeg
|
Lub ntsiab |
Standard Requirements |
Sau ntawv |
|
Co |
Cov khoom seem
|
Matrix ntsiab uas muab siab - kub lub zog, thermal stability, toughness, thiab inherent corrosion kuj |
|
Cr |
26.0 - 30.0% |
Tsim ib daim ntawv tuab Cr₂O₃ tiv thaiv zaj duab xis, muab oxidation thiab corrosion kuj, thiab tseem yog ib feem tseem ceeb ntawm hard carbides. |
|
W |
5.0 - 6.0% |
Muab cov tshuaj tiv thaiv kom muaj zog, tsim kom muaj qhov nruab nrab ntawm carbides nrog carbon, thiab txhim kho siab -kub hardness |
|
C |
0.2 - 0.3% |
Cov ntsiab lus tsis tshua muaj carbon tsawg ua rau me me ntawm carbides, kom ntseeg tau zoo toughness thaum tswj kev hnav tsis kam. |
|
Ni |
2.0 - 3.0% |
Ntxiv ib qho me me kom ruaj khov rau cov qauv austenitic thiab txhim kho toughness |
|
Fe |
Tsawg dua lossis sib npaug li 3.0% |
Kev tswj nruj kom paub meej purity thiab microstructural stability |
|
Si |
Tsawg dua lossis sib npaug li 2.0% |
Deoxidizer |
|
Mn |
Tsawg dua lossis sib npaug li 1.0% |
Deoxidizer, txhim kho kev ua haujlwm |
|
Mo |
Tsawg dua lossis sib npaug li 1.0% |
Kev xaiv me me ntxiv los muab cov kev daws teeb meem zoo zog ntxiv thiab pitting corrosion kuj |
Lub cev muaj zog
|
Khoom |
Tus nqi / Ntau |
Kev Xeem |
|
Qhov ntom |
8.40 - 8.60 g/cm³ |
Chav tsev kub (20 degree) |
|
Melting Point |
1300 - 1370 degree |
- |
|
Coefficient ntawm Thermal Expansion (20-100 degree) |
12.0 - 13.0 × 10⁻⁶ /K |
- |
|
Elastic Modulus (Young's Modulus) |
200 - 220 GPa |
Chav kub |
|
Thermal conductivity (20 degree) |
21.8 W/(m·K) |
- |
|
Kev tiv thaiv |
0.85 - 0.95 μΩ·m |
- |
|
Magnetism |
Tsis yog-magnetic (magnetic tsis muaj zog) |
Cobalt-raws li alloys feem ntau tsis yog- sib nqus los yog tsis muaj zog sib nqus ntawm chav tsev kub |
Mechanical Properties (Ntaus / Welded Condition, Hom Tus Nqi)
|
Khoom |
Tus nqi |
Specification |
|
Hardness (Cast / Weld Overlay Condition) |
28 - 38 HRC(270 - 380 HV) |
AWS A5.21 ECoCr-A |
|
Tensile zog |
700 - 850 MPa |
- |
|
Yield zog (0.2% Offset) |
450 - 600 MPa |
- |
|
Elongation |
5 - 10% (zoo toughness) |
- |
|
Compressive zog ntawm chav tsev kub |
1800 - 2200 MPa |
- |
|
Impact toughness |
Charpy V-qhov cuam tshuam lub zog ntawm kwv yees li 20 - 40 J |
- |
Lus Cim: Lub zog ntawm Stellite 21 yog qhov siab ntawm cobalt -raws li alloys. Nws elongation thiab cuam tshuam toughness yog qhov zoo dua li cov qib siab -carbon. Txawm li cas los xij, nws tseem poob rau hauv qeb ntawm hnav- cov ntaub ntawv tiv taus thiab tsis pom zoo rau cov khoom siv uas muaj zog tensile siab.
High -kev ua haujlwm kub
Stellite 21 muaj qhov nruab nrab muaj peev xwm tswj tau qhov hardness ntawm qhov kub thiab txias. Cov hauv qab no yog cov txiaj ntsig siv tau zoo li cas hardness hloov nrog kub:
|
Kub |
Hom hardness |
|
Chav ntsuas kub |
28 - 38 HRC |
|
400℃(750℃F) |
26 HRC |
|
600℃(1110℃F) |
22 HRC |
|
760℃(1400℃F) |
18 HRC |
|
870℃(1600℃F) |
14 HRC |
Antioxidant Performance:
Nyob rau hauv siab -kub oxidation ib puag ncig, Stellite 21 tsim ib tug ntom Cr₂O₃ oxide zaj duab xis ntawm nws nto. Tom qab raug huab cua ntawm 800℃rau 1000 teev, oxidation hnyav nce yog tsawg dua 1 mg / cm², qhia tau hais tias zoo antioxidant zog.
Ntev -Lub Sij Hawm Thermal Stability:
Thaum nyob rau hauv kev pab cuam ntawm kub siab tshaj 600℃nyob rau ncua sij hawm, lub alloy exhibits zoo heev microstructural stability uas tsis muaj theem tseem ceeb transformations los yog softening. Lub allotropic transformation ntawm cobalt matrix thiab khoom- kev daws teeb meem los ntawm tungsten kom lub neej ntev kev pab cuam nyob rau hauv thermal cycling tej yam kev mob.
Siv tau Media:
1. Siab- kub thiab siab - dej siab (thawj lub tshuab hluav taws xob nuclear)
2. Seawater, dej ntsev (zoo heev pitting corrosion kuj)
3. Oxidizing acids: Nitric acid (superior corrosion kuj ntawm chav tsev kub)
4. Tsis yog -oxidizing acids: Sulfuric acid (concentration Tsawg dua los yog sib npaug rau 50%), hydrochloric acid (concentration Tsawg dua los yog sib npaug rau 30%) (corrosion rate feem ntau<0.1 mm/a)
5. Alkaline daws: Sodium hydroxide, potassium hydroxide (resistant rau tag nrho cov concentrations)
6. Organic acids: Acetic acid, formic acid, thiab lwm yam.
7. Siab -kub oxidizing cua, sulfur / chlorine- muaj roj (tsim ib qho kev tiv thaiv Cr₂O₃ zaj duab xis rau saum npoo)
Lus Cim: Stellite 21 muaj qhov txwv tsis pub muaj kev tiv thaiv corrosion hauv kev txo cov kua qaub (piv txwv li, concentrated kub hydrochloric acid) thiab fluorine- muaj cov xov xwm.
Stellite 21 yog qhov tsim nyog rau kev caij tsheb kauj vab kub, cuam tshuam, nruab nrab- mus rau - tsis tshua muaj hnav, thiab corrosive tej yam kev mob, thiab pom zoo rau cov nram qab no:
Daim ntawv thov teb
-
Nuclear Fais Fab Kev Lag Luam: Sealing nto ntawm lub tshuab reactor li qub (lub ntsiab chav li qub, kev nyab xeeb li qub, kev sib cais li qub) thiab lwm yam hnav- cov khoom tiv thaiv nyob rau hauv cov kob nuclear, leveraging nws zoo heev tiv thaiv thermal shock, irradiation, thiab siab - kub siab - dej corrosion.
-
Li qub thiab sealing kev lag luam: Sealing nto ntawm nruab nrab - mus rau - siab siab li qub (valve seats, valve discs, valve stems), tshwj xeeb tshaj yog haum rau chav li qub thiab feedwater li qub nrog qhov kub thiab txias tsis tu ncua, muab superior thermal tawg kuj.
-
Aerospace thiab Zog: combustion chamber Cheebtsam, qhia vanes, thiab turbine foob rings ntawm roj turbines, uas tiv taus hnyav heev thermal cycling thiab oxidation corrosion.
-
Roj thiab Roj: Siab - kub siab - lub siab valve sab hauv, cov khoom siv hauv lub taub hau, thiab cov khoom siv ua kua qaub nruab nrab, nrog kev ua haujlwm zoo rau H₂S thiab CO₂ corrosion.
-
Muaj Machinery thiab cuab yeej: Kub shear blades, kub forging tuag, thiab tuag-casting pwm ( rooj vag, plungers) nyob rau hauv daim ntawv thov yuav tsum tau tiv thaiv thermal shock thiab thermal qaug zog.
-
Tshuaj thiab Petrochemical: Reactor agitator blades, hnav-cov ntaub ntawv tiv thaiv ntawm tshav kub exchanger raj phaj, thiab valve sealing nto, uas tiv taus cov kev sib xyaw ua ke ntawm corrosion thiab hnav.
-
Shipbuilding thiab Offshore Engineering: Hnav- tiv taus qhov chaw ntawm lub kiv cua thiab lub valve / twj tso kua mis, tiv thaiv seawater corrosion thiab mechanical hnav.
-
Automotive thiab Internal Combustion Engines: Lub cav tso pa tawm, lub caj npab rocker, thiab turbocharger foob rings, tswj kev hnav thiab qaug dab peg nyob rau hauv siab -kub cyclic tej yam kev mob.
-
Kev kho cov hlau thiab cua sov: Kub shear hniav, kub pom hniav, rauv hauv qab yob, thiab coj yob, ua siab ntev siab - kub oxidation thiab thermal shock.
-
Iav thiab Ceramic Forming: iav pwm thiab kub extrusion pwm, vim lawv zoo thermal qaug zog thiab corrosion kuj.
Kev xa khoom thiab Customization
Peb muab cov kev daws teeb meem hloov tau yooj yim thiab txhim khu kev qha kom ntseeg tau tias koj tau txais cov ntaub ntawv Stellite 21 uas zoo kawg nkaus phim koj qhov kev xav tau.
|
Daim ntawv |
 Ntawv / phaj
|
 Bar / Qws
|
 Seamless Yeeb Nkab
|
 Sawb / Sheet Coil
|
 Hlau / Hlau Rod
|
|---|---|---|---|---|---|
|
Pauv ntau yam |
Thickness: 0.5 - 100 hli |
Txoj kab uas hla Φ6-500mm |
Sab nraud txoj kab uas hla Φ10-300mm |
Thickness: 0.1-3.0 hli |
Txoj kab uas hla Φ0.5-10mm |
|
Customization Muaj peev xwm |
Tshwj xeeb tuab / nyias dov, ultra- daim hlau dav; tshwj xeeb nto kho, tsau -ntev txiav |
Loj- loj forged tuav (txog Φ800 mm), tshwj xeeb- cov kab tuav, thiab ntau yam kev kho cua sov |
Loj - txoj kab uas hla tuab - cov kav dej, tshwj xeeb alloy muaj pes tsawg leeg; Yeeb nkab kawg ua (beveling, ruaj ntev) |
Cov xwm txheej sib txawv, kev kho cua sov tshwj xeeb (kev kho kom ruaj khov, tswj qhov loj me), cov kua qaub- ntxuav qhov chaw, electrolytic polishing, txheej, los yog cov yeeb yaj kiab tiv thaiv tshwj xeeb |
Kev kho deg tshwj xeeb, kos duab precision |
Vim li cas thiaj xaiv peb? - Txhim khu kev qha Engineering Technology. Dependable xa khoom.
Peb tsis yog ib tus neeg muag khoom xwb, tab sis yog ib tus neeg koom tes nrog cov ntaub ntawv ntseeg siab rau koj hauv Suav teb.
Vertically Integrated Production
Muaj 20,000㎡ qhov chaw nrog 10+ automated kab (8, 000+ tons / xyoo). Hauv - tsev cuab yeej & qhov chaw tuag ua rau muaj kev hloov kho sai thiab tswj tus nqi zoo - tsis muaj tus neeg nruab nrab kos npe.
Kev Tswjhwm nruj nruj ntawm txhua theem
Tag nrho traceability nyob rau hauv lub tseem ceeb QC checkpoints thoob plaws hauv ntau lawm . 100% raws li ASTM/ASME, EN, thiab GB qauv. Cov ntaub ntawv xeem cov ntaub ntawv muaj nyob nrog txhua qhov khoom xa tuaj.
Txhim khu kev xa khoom & Export ntim
10+ xyoo xa tawm mus rau Tebchaws Europe, North America, Southeast Asia & Middle East nrog cov dej tsis zoo thiab tiv thaiv- xeb, ua ke nrog cov kev xaiv thauj khoom yooj yim kom muaj kev nyab xeeb thiab nyob rau - lub sijhawm tuaj txog.
Qauv validation ua ntej pawg ntau lawm
Peb muab cov qauv dawb rau kev kuaj xyuas zoo, tso cai rau koj tso cov xaj xaj tsuas yog tom qab kev pom zoo. Peb xyuas kom meej qhov sib xws los ntawm cov qauv mus rau cov khoom loj los ntawm qhov ntsuas qhov tseeb thiab kev tsim pob tshab.
FAQ
Q: Dab tsi yog qhov zoo ntawm Stellite 21?
Q: Cov kev kho cua sov zoo li cas Stellite 21 xav tau?
Q: Qhov kev pabcuam siab tshaj plaws yog dab tsi?
Q: Qhov txawv ntawm Stellite 21 thiab Stellite 6 yog dab tsi?
Cim npe nrov: Tuam Tshoj stellite 21 manufacturers, lwm tus neeg, Hoobkas
