Khoom nta
Zoo heev Hardness thiab hnav tsis kam
Stellite 8 tsim ntau cov carbides nyuaj ntawm M₇C₃ thiab M₆C hom, sib npaug faib rau hauv cobalt-raws li cov kua matrix. Cov cam khwb cia los yog weld-tej hardness ranges ntawm HRC 45-55 (kwv yees HV 450-600), muab kev tiv thaiv zoo dua rau abrasive thiab erosive hnav piv rau Stellite 6, thaum tswj kev cuam tshuam zoo dua thiab thermal tawg tsis kam dhau Stellite 1 thiab 4.
Superior Kub Hardness thiab Oxidation Resistance
Stellite 8 khaws cia kwv yees li 38 HRC ntawm 600 degree, txog 30 HRC ntawm 760℃(1400℃F), thiab nyob ib ncig ntawm 22 HRC ntawm 870℃(1600℃F). Nws cov ntsiab lus chromium siab txhawb kev tsim cov Cr₂O₃ oxide zaj duab xis ntom ntom ntawm qhov chaw. Tom qab raug huab cua ntawm 800℃rau 1000 teev, oxidation hnyav nce qis dua 1 mg / cm², muab kev tiv thaiv oxidation zoo dua li cov cuab yeej hlau thiab hlau-raws li hnav- cov ntaub ntawv tiv taus. Qhov no ua rau nws haum rau siab - daim ntawv thov kub xws li kub extrusion, kub shearing, thiab roj turbines.
Zoo Corrosion Resistance
Nrog kwv yees li 30% chromium cov ntsiab lus, Stellite 8 pom zoo corrosion kuj nyob rau hauv oxidizing acids (xws li, nitric acid), nruab nrab concentrated uas tsis yog - oxidizing acids (xws li, tsawg dua los yog sib npaug rau 50% sulfuric acid), thiab alkaline daws. Nyob rau hauv dej hiav txwv thiab chloride ib puag ncig, nws feem ntau qhia pitting corrosion es tsis zoo corrosion, nrog zoo corrosion kuj nyob rau hauv siab -kub cua uas muaj sulfur thiab chlorine.
Favorable Machinability thiab Weldability
Stellite 8 muaj cov weldability thiab machinability zoo dua li qib siab - carbon (xws li Stellite 1, 4). Nws tuaj yeem tso tau siv PTA, TIG, thiab oxy-acetylene vuam txoj kev. Preheating rau 400-550℃thiab maj mam txias tom qab vuam yog pom zoo kom txo qhov kev pheej hmoo ntawm kub tawg. Kev siv lub tshuab txwv tsis pub muaj peev xwm ua tau nyob rau hauv qhov mob annealed, nrog rau qhov kawg tiav feem ntau pom zoo los ntawm kev sib tsoo lossis hluav taws xob tawm machining (EDM).
Technical Specifications
Tshuaj muaj pes tsawg leeg
|
Element |
Standard Requirements |
Sau ntawv |
|
Co |
Cov khoom seem |
Matrix cov ntsiab lus uas muab siab - kub lub zog, thermal stability, toughness, thiab inherent corrosion kuj |
|
Cr |
28.0 - 32.0% |
Tsim ib daim ntawv tuab Cr₂O₃ tiv thaiv zaj duab xis, muab oxidation thiab corrosion kuj, thiab tseem yog ib feem tseem ceeb ntawm cov tawv carbides. |
|
W |
8.0 - 10.0% |
Muab cov tshuaj tiv thaiv kom muaj zog, ua kom tawv nqaij thiab hnav- cov carbides resistant nrog cov pa roj carbon, thiab txhim kho siab - kub hardness thiab creep resistance |
|
C |
1.5 - 2.5% |
Tsim ib tug loj npaum li cas ntawm siab-hardness carbides (M₇C₃, M₆C) nrog chromium thiab tungsten, uas yog lub hauv paus ntawm hnav tsis kam. |
|
Fe |
Tsawg dua lossis sib npaug li 3.0% |
Kev tswj nruj kom paub meej purity thiab microstructural stability |
|
Ni |
Tsawg dua lossis sib npaug li 3.0% |
Kev tswj nruj nruj kom tiv thaiv nickel ntau dhau los ua rau embrittlement |
|
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 |
8.69 - 8.87 g/cm³ |
Chav tsev kub (20 degree) |
|
Melting Point |
1260 - 1390 degree |
- |
|
Coefficient ntawm Thermal Expansion (20-100 degree) |
11.5 - 12.5 × 10⁻⁶ /K |
- |
|
Elastic Modulus (Young's Modulus) |
205 - 230 GPa |
Chav kub |
|
Thermal conductivity (20 degree) |
14.5 - 14.8 W/(m·K) |
- |
|
Kev tiv thaiv |
0.85 - 0.94 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) |
45 - 55 HRC(450 - 600 HV) |
AWS A5.21 ECoCr-B |
|
Tensile zog |
650 - 850 MPa |
- |
|
Yield zog (0.2% Offset) |
550 - 700 MPa |
- |
|
Elongation |
1 - 3% (cov khoom siv nkig) |
- |
|
Compressive zog ntawm chav tsev kub |
2000 - 2400 MPa |
- |
|
Impact toughness |
Charpy V-notch 5 - 15 J |
- |
Lus Cim: Stellite 8 yog ib qho hnav tsis taus - cov khoom siv tiv taus. Nws cov cim kev ua haujlwm tseem ceeb yog hardness thiab hnav tsis kam. Nws muaj lub zog tensile tsawg thiab cov yas tsis zoo, thiab feem ntau tsis pom zoo rau cov khoom siv uas muaj zog tensile siab.
High -kev ua haujlwm kub
High-Temperature Hardness (Core Advantage): Stellite 8 muaj peev xwm tswj tau qhov tawv tawv ntawm qhov kub thiab txias. Hauv qab no yog cov nqi siv tau zoo rau hardness variation nrog kub:
|
Kub |
Hom hardness |
|
Chav ntsuas kub |
45 - 55 HRC |
|
400℃(750℃F) |
42 HRC |
|
600℃(1110℃F) |
38 HRC |
|
760℃(1400℃F) |
30 HRC |
|
870℃(1600℃F) |
22 HRC |
Antioxidant Performance:
Nyob rau hauv siab - qhov kub thiab txias oxidation ib puag ncig, Stellite 8 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 tsawg dua 1 mg / cm², ua kom pom cov khoom antioxidant zoo dua li cov hlau feem ntau -raws li cua sov- resistant steels.
Ntev -Lub Sij Hawm Thermal Stability:
Thaum nyob rau hauv kev pab cuam ntawm kub siab tshaj 600 degree, lub alloy exhibits zoo heev microstructural stability uas tsis muaj theem tseem ceeb transformation los yog softening. Lub allotropic transformation ntawm cobalt matrix thiab khoom- kev daws teeb meem los ntawm tungsten collectively xyuas kom meej nws lub neej ntev kev pab cuam nyob rau hauv siab - kub.
Siv tau Media:
1. Seawater, dej ntsev (zoo heev pitting corrosion kuj)
2. Oxidizing acids: Nitric acid (superior corrosion kuj ntawm chav tsev kub)
3. 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)
4. Alkaline daws: Sodium hydroxide, potassium hydroxide (resistant rau tag nrho cov concentrations)
5. Organic acids: Acetic acid, formic acid, thiab lwm yam.
6. Siab -kub oxidizing cua, sulfur / chlorine- muaj roj (tsim ib qho kev tiv thaiv Cr₂O₃ zaj duab xis rau saum npoo)
Lus Cim: Stellite 8 muaj qhov txwv tsis pub muaj kev tiv thaiv corrosion hauv kev txo cov kua qaub (piv txwv li, concentrated hot hydrochloric acid) thiab fluorine- muaj cov xov xwm. Rau siab - kev sib txhuam kev nyuaj siab, nws raug nquahu kom siv ua ke nrog lubricating media.
Stellite 8 yog haum rau siab- hnav, nruab nrab- cuam tshuam, thiab siab- qhov kub thiab txias thiab tau pom zoo rau cov teb hauv qab no:
Daim ntawv thov teb
-
Li qub thiab sealing kev lag luam: siab thiab nruab nrab siab valve sealing nto (lub rooj zaum, discs, stems), twj tso kua mis casings, rotating seals, mechanical seals. Nws muaj kev hnav zoo dua li Stellite 6 thiab tsim nyog rau kev tshaj tawm uas muaj cov khoom siv.
-
Aerospace thiab Zog: Gas turbine qhia vanes, cav valve sealing nto, turbocharger foob rings, siab - kub bearings.
-
Roj thiab Roj: Downhole cuab yeej hnav qhov chaw, laum cov yeeb nkab sib txuas, lub valve sab hauv, cov av nkos twj tso kua mis, tiv taus siab - nrawm yaig los ntawm cov xuab zeb -laden media.
-
Muaj Machinery thiab cov cuab yeej: Kub extrusion tuag, kub shear hniav, tuag-casting pwm ( rooj vag, plungers), extruder screws, txiav ntug rau yas ua.
-
Tshuaj thiab Petrochemical: Reactor agitator blades, hnav-cov ntaub ntawv tiv thaiv ntawm cov cua kub exchanger raj phaj, twj tso kua mis thiab valve sealing nto, withstanding cov teebmeem ntawm corrosion thiab hnav.
-
Nuclear Fais Fab Kev Lag Luam: Valve ntsaws ruaj ruaj hauv cov Islands tuaj nuclear, nuclear- qib hnav- cov ntaub ntawv tiv thaiv, siv nws lub siab tiv thaiv hluav taws xob thiab microstructural stability.
-
Shipbuilding thiab Offshore Engineering: Hnav- tiv taus qhov chaw ntawm lub kiv cua shafts, twj tso kua mis thiab valve Cheebtsam, tiv thaiv seawater corrosion thiab mechanical hnav.
-
Automotive thiab Internal Combustion Engines: High-kev ua haujlwm tso pa tawm, lub caj npab rocker, turbocharger foob rings, tswj kev tiv thaiv- hnav thiab tiv thaiv- txeeb cov khoom ntawm qhov kub thiab txias.
-
Kev kho cov hlau thiab cua sov: Kub shear hniav, kub pom hniav, rauv hauv qab yob, coj yob, tiv taus siab -kub oxidation thiab abrasive hnav.
-
Iav thiab Ceramic Forming: iav pwm, kub extrusion tuag, vim lawv zoo heev corrosion kuj rau molten iav thiab ceramics.
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 Stellite 8 cov ntaub ntawv uas phim koj qhov project 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, lossis 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 muaj dej 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 8?
Q: Qhov kev kho cua sov dab tsi yog Stellite 8 xav tau?
Q: Qhov kev pabcuam siab tshaj plaws yog dab tsi?
Q: Qhov txawv ntawm Stellite 8 thiab Stellite 6 yog dab tsi?
Cim npe nrov: Tuam Tshoj stellite 8 manufacturers, lwm tus neeg, Hoobkas
