Khoom nta
Exceptional hardness thiab hnav tsis kam
Stellite 4 ua tiav qhov no los ntawm kev tsim qauv tsim muaj cov pa roj carbon siab, siab chromium, thiab siab tungsten, uas ua rau muaj coob tus carbides nyuaj ntawm M₇C₃ thiab M₆C hom (nrog hardness txog 1500-1800 HV). Cov carbides nyuaj no tau muab faib ua ib yam li cobalt -raws li cov kua matrix. Cov qauv sib xyaw no ntawm 'cov khoom tawv tawv + tawv matrix' ua rau nws tiv taus kev txiav thiab nplaum hnav los ntawm cov khoom abrasive. Qhov sib txawv hardness nyob rau hauv cam khwb cia los yog weld-cov kev mob uas tso nyiaj yog nyob nruab nrab ntawm HRC 48-56 (kwv yees HV 480-600). Nyob rau hauv cov kev sib txhuam qhuav, nws hnav tsis kam yog qhov zoo dua rau cov hlau tsis zoo tib yam thiab cov cuab yeej hlau, ua rau nws tshwj xeeb tshaj yog tsim rau cov xov xwm uas muaj cov khoom siv thiab cov ntawv thov kev sib txhuam siab.
Zoo heev -Tub kub Liab Hardness thiab Oxidation Resistance
Stellite 4 muaj npe nrov rau nws qhov siab tshaj -kub liab hardness, tswj kom muaj zog hnyav txawm tias siab tshaj 760℃(1400℃F). Ntawm 600 degree, nws qhov hardness tseem nyob ib puag ncig 35 HRC, thiab ntawm 870℃(1600℃F), nws khaws cia li 25 HRC. Cov cuab yeej no yog los ntawm allotropic transformation ntawm cobalt los ntawm hexagonal ze-packed (ε-Co) mus rau lub ntsej muag-centered cubic (-Co) ntawm qhov kub siab tshaj hauv chav tsev kub, nrog rau cov khoom- kev daws teeb meem los ntawm tungsten. Hauv cov huab cua oxidizing, cov ntsiab lus chromium siab txhawb kev tsim cov Cr₂O₃ oxide zaj duab xis rau saum npoo. Tom qab raug huab cua ntawm 800℃rau 1000 teev, oxidation hnyav nce tsawg dua 1 mg / cm², muab oxidation zoo dua li cov hlau feem ntau -raws li cua sov{22}}cov hlau resistant.
Zoo Corrosion Resistance
Nrog kwv yees li ntawm 30% chromium cov ntsiab lus thiab cov khoom muaj txiaj ntsig ntawm cobalt matrix, Stellite 4 pom zoo corrosion kuj nyob rau hauv ntau yam corrosive media. Nyob rau hauv chav tsev kub, nws muaj peev xwm tiv taus sulfuric acid concentrations txog 50%, hydrochloric acid mus txog 30%, thiab tag nrho cov concentrations ntawm sodium hydroxide tov, nrog corrosion feem ntau qis dua 0.1 mm / a. Hauv oxidizing media xws li nitric acid, nws cov corrosion kuj tseem zoo dua rau qee cov nickel-raws li alloys. Hauv cov dej hiav txwv thiab cov tshuaj chloride, nws feem ntau nthuav tawm pitting corrosion ntau dua li cov khoom poob. Txawm li cas los xij, kev ua tau zoo raug txwv hauv kev txo cov kua qaub (piv txwv li, concentrated hot hydrochloric acid) thiab fluorine{12}} muaj cov xov xwm.
Machining thiab ua yam ntxwv
Stellite 4 yog ib qho hnav tsis taus- cov khoom siv tiv taus nrog chav tsev - qhov kub thiab txias tensile lub zog ntawm kwv yees li 550-900 MPa thiab elongation ntawm pob txha tsuas yog 1-3%. Nws qhov cuam tshuam toughness kuj tsawg (Charpy V-notch cuam tshuam lub zog<10 J), making it unsuitable for applications subject to severe impact loads. However, it performs excellently under sliding wear and fretting wear conditions. The alloy is typically formed by precision casting or powder metallurgy. Common application methods include cladding (PTA, TIG, oxy-acetylene). Due to its high susceptibility to hot cracking, preheating to 300-600°C and control of interpass temperature are required during welding, followed by slow cooling after welding. Due to its extremely high hardness, grinding or electrical discharge machining (EDM) is recommended for finishing.
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 |
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 hard carbides. |
|
W |
13.0 - 16.0% |
Muab cov tshuaj tiv thaiv kom muaj zog, ua kom tawv nqaij thiab hnav- cov carbides resistant nrog cov pa roj carbon monoxide, ua kom muaj zog ntau dua - kub hardness thiab creep resistance |
|
C |
2.0 - 3.0% |
Ua ib tug loj npaum li cas ntawm siab-hardness carbides (M₇C₃, M₆C) nrog chromium thiab tungsten, qhov no yog lub hauv paus ntawm ultra-siab hnav tsis kam. |
|
Fe |
Tsawg dua lossis sib npaug li 3.0% |
Kev tswj nruj nruj kom ntseeg tau 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 |
1190 - 1420 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 kub siab (20 degree) |
0.85 - 0.94 μΩ·m |
Chav kub |
|
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) |
48 - 56 HRC(480 - 600 HV) |
AWS A5.21 ECoCr-C |
|
Tensile zog |
550 - 900 MPa |
- |
|
Yield zog (0.2% Offset) |
500 - 700 MPa |
- |
|
Elongation |
1 - 3% (cov khoom siv nkig) |
- |
|
Compressive zog ntawm chav tsev kub |
2000 - 2500 MPa |
- |
|
Impact toughness |
Charpy V-qhov cuam tshuam lub zog < 10 J |
- |
Lus Cim: Stellite 4 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
Stellite 4 muaj peev xwm tshwj xeeb los tswj cov tawv nqaij ntawm qhov kub thiab txias. Hauv qab no yog cov nqi siv rau kev sib txawv hardness nrog kub:
|
Kub |
Hom hardness |
|
Chav ntsuas kub |
48 - 56 HRC |
|
400℃(750℃F) |
40 HRC |
|
600℃(1110℃F) |
35 HRC |
|
760℃(1400℃F) |
30 HRC |
|
870℃(1600℃F) |
25 HRC |
Antioxidant Performance:
Nyob rau hauv siab - qhov kub thiab txias oxidation ib puag ncig, Stellite 4 tsim ib tug tuab 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, muab cov khoom antioxidant zoo dua li cov hlau feem ntau -raws li cua sov- cov hlau tsis muaj zog. Txawm hais tias nyob rau hauv qhov kub ntawm 500-700 degree, qhov kev sib txhuam cua sov ua rau muaj qhov kub thiab txias, nws tsis soften sai li cov cuab yeej zoo tib yam.
Ntev -Lub Sij Hawm Thermal Stability:
Thaum nyob rau hauv kev pab cuam ntawm kub siab tshaj 600℃rau ncua sij hawm, lub alloy exhibits zoo heev microstructural stability tsis muaj theem tseem ceeb transformation los yog softening. Cov kev daws teeb meem ntxiv dag zog los ntawm tungsten nyob rau hauv cobalt matrix thiab cov qauv kev ruaj ntseg ntawm carbides ua ke ua kom lub neej ua haujlwm ntev nyob rau hauv siab - qhov kub thiab txias.
Siv tau Media:
1. Seawater, dej ntsev (zoo heev pitting corrosion kuj; feem ntau nthuav tawm pitting es tsis zoo corrosion)
2. Oxidizing acids: Nitric acid (superior corrosion kuj ntawm chav tsev kub, txawm zoo dua li ib co npib tsib xee-raws li alloys)
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 li 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 (cov ntaub ntawv tiv thaiv Cr₂O₃ rau saum npoo)
Lus Cim: Stellite 4 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. Nyob rau hauv siab - kev sib txhuam kev sib txhuam, cov oxide zaj duab xis yog qhov ua rau puas tsuaj; lubrication yuav tsum tau siv ua ke kom muaj kev tiv thaiv corrosion.
Stellite 4 yog tsim los rau kev siv hnyav uas yuav tsum tau hnav tsis kam thiab siab -kub hardness, pom zoo rau cov nram qab no:
Daim ntawv thov teb
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Aerospace thiab Zog: Gas turbine seals, hniav hnav strips, combustion chamber Cheebtsam, thiab cav valve sealing ntsej muag. Nws tuav lub siab hardness thiab zoo heev hnav tsis kam ntawm qhov kub siab tshaj 760 degree, nrog rau zoo thermal qaug zog stability.
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Roj thiab Roj: Hnav-cov khoom tiv thaiv ntawm cov cuab yeej downhole, li qub, laum cov yeeb nkab txuas, laum cov khoom, thiab lub ntsej muag lub ntsej muag valve (lub rooj zaum, discs, stems). Nws tiv taus siab - nrawm yaig thiab abrasive hnav los ntawm cov xuab zeb- thauj khoom thiab cov khoom me me.
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Kev lag luam tshuaj lom neeg thiab Valve: Cov twj tso kua mis, tig lub nplhaib foob, hnav cov ntaub qhwv, impeller screws, bearing bushes, mechanical seal rings, and sealing faces, as well as sealing faces and wear-resistant linings for various control valves, ball valves, and gate valves.
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Muaj Machinery thiab cov cuab yeej: Kub shear blades, kub forging tuag inserts, casting tuag Cheebtsam ( rooj vag, plungers), centerless sib tsoo tshuab txhawb, ntsia hlau presses, extruder screws, thiab tshwj xeeb txiav npoo rau yas ua.
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Nuclear Fais Fab Kev Lag Luam: Nuclear Island valve ntsaws ruaj ruaj thiab nuclear- qib hnav- cov ntaub ntawv tiv taus. Nws muaj kev tiv thaiv hluav taws xob siab, kev ua haujlwm ruaj khov nyob rau hauv thermal cycling tej yam kev mob, thiab zoo heev los tiv thaiv - ntes thiab tiv thaiv -fretting hnav cov khoom.
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Shipbuilding thiab Offshore Engineering: Hnav- tiv taus qhov chaw ntawm lub kiv cua thiab cov twj tso kua mis / valve, tiv thaiv cov teebmeem kev sib koom ua ke ntawm seawater corrosion thiab mechanical hnav.
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Mining thiab Slurry Thauj: Mine laum khoom, crushers, slurry twj tso kua mis hnav lub tes tsho, thiab hnav cov ntaub qhwv, tiv taus siab - nrawm yaig thiab hnyav hnyav los ntawm cov khoom tawv.
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Automotive thiab High-Performance Internal Combustion Engines: High-kev ua tau zoo ntawm cov pa tawm thiab lwm yam siab - qhov kub thiab txias ntawm cov cav tov, tswj kev hnav zoo thiab tiv thaiv- txeeb tau ntawm qhov kub ntawm 500-800℃.
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Cov Cuab Yeej Kub Ua Haujlwm thiab Kev Tsim Kho iav: Kub shear blades, iav pwm, thiab kub extrusion tuag, vim lawv zoo siab - kub hardness thiab corrosion kuj rau molten iav.
Kev xa khoom thiab Customization
Peb muab cov kev daws teeb meem hloov pauv tau thiab txhim khu kev qha los xyuas kom meej tias koj tau txais cov khoom siv Stellite 4 uas haum rau 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 4?
Q: Kev kho cua sov dab tsi yuav tsum tau ua rau Stellite 4?
Q: Qhov kev pabcuam siab tshaj plaws yog dab tsi?
Q: Dab tsi yog qhov txawv ntawm Stellite 4 thiab Stellite 6?
Cim npe nrov: Tuam Tshoj stellite 4 manufacturers, lwm tus neeg, Hoobkas
