Kev piav qhia:
Co 21, yog ib hom hlau uas muaj cobalt ua los ntawm cov hlau uas tsis muaj carbon ntau, austenitic alloy, thiab muaj zog heev thaum ua haujlwm, kub thiab tiv taus kev cuam tshuam. Cov khoom Co 21 ruaj khov thaum lub sijhawm thermal cycling, ua rau lawv yog ib qho kev xaiv zoo rau cov khoom siv kub. Nws siv rau ntawm cov pa thiab cov kua dej tswj lub cev thiab cov rooj zaum. Nws tuaj yeem siv rau txhua yam hlau uas vuam tau, suav nrog cov hlau tsis xeb. Nws sib npaug rau: Stellite 21, Polystel 21.
COV NTAWV THOV:
Cov Li Qub Ncu. Cov Txiab Kub. Cov Tuag Forging. Cov Plugs Tho. Cov Li Qub Tshuaj Lom Zem thiab Petrochemical.
COV KHOOM TXHEEJ TXHEEM:
Cov tshuaj lom neeg muaj pes tsawg leeg
| Qib | Cov tshuaj lom neeg muaj pes tsawg leeg (%) | ||||||||
| Co | Cr | W | Ni | C | Mn | Si | Mo | Fe | |
| Co 21 | Bal | 27.3 | ≤0.5 | 2 | 0.25 | ≤0.5 | 1.5 | 5.5 | 1.5 |
COV KHOOM SIV LUB CEV:
| Qib | Qhov Ceev | Qhov Kub Yaj |
| Co 21 | 8.33g/cm3 | 1295~1435°C |
COV CIM QHIA TXOG:
| Qhov nyuaj | Kev Tiv Thaiv Kev Sib Txhuam | Cov Txheej Txheem Tso Nyiaj | Kev Tiv Thaiv Kev Xeb | Machilityineab |
| HRC 27 ~ 40 | Zoo | Ntau yam | Zoo | Cov Cuab Yeej Carbide |
Qhov Loj Txheem:
| Txoj kab uas hla | Txoj kab uas hla | Txoj kab uas hla |
| 1/8” (3.2 hli) | 5/32” (4.0 hli) | 3/16” (4.8 hli) |
Nco ntsoov tias qhov loj me tshwj xeeb, lossis cov kev cai ntim khoom muaj rau txhua qhov kev thov.
COV LUS QHIA:
AWS A5.21 / ASME BPVC IIC SFA 5.21 ERCoCr-E
AWS A5.13 ECOCR-A:
Cobalt 6
Cov electrodes ECoCr-A muaj cov qauv hypoeutectic, uas muaj li ntawm 13% eutectic chromium carbides faib rau hauv cov khoom siv cobalt-chromium-tungsten. Qhov tshwm sim yog cov khoom siv uas muaj kev sib xyaw ua ke ntawm kev tiv thaiv tag nrho rau kev hnav tsis tshua muaj kev ntxhov siab, nrog rau qhov tsim nyog toughness los tiv thaiv qee qib ntawm kev cuam tshuam. Cobalt alloys kuj tseem zoo rau kev tiv thaiv kev hnav hlau-rau-hlau, tshwj xeeb tshaj yog nyob rau hauv cov xwm txheej siab uas yooj yim rau galling. Cov ntsiab lus siab-alloy ntawm lub matrix kuj muab kev tiv thaiv zoo heev rau corrosion, oxidation, thiab kub siab khaws cia ntawm qhov kub hardness txog li ntawm 1200 ° F (650 ° C). Cov alloys no tsis raug rau allotropic hloov pauv thiab yog li ntawd tsis poob lawv cov khoom yog tias cov hlau hauv paus tom qab ntawd raug kho cua sov.
Colbalt #6 raug pom zoo rau cov xwm txheej uas hnav nrog rau qhov kub siab thiab qhov twg xeb, lossis ob qho tib si. Qee qhov kev siv feem ntau yog cov twj tso kua dej hauv tsheb thiab cov twj tso kua dej, cov lus qhia saw hlau, cov cuab yeej kub, cov hniav txiav, thiab cov ntsia hlau extruder.
AWS A5.13 ECOCR-B:
Cobalt 12
Cov electrodes thiab rods ECoCr-B zoo sib xws hauv kev sib xyaw rau cov deposits ua los ntawm kev siv ECoCr-A (Cobalt 6) electrodes thiab rods, tsuas yog rau qhov feem pua ntau dua me ntsis (kwv yees li 16%) ntawm carbides. Cov alloy kuj muaj qhov nyuaj dua me ntsis thiab zoo dua abrasive thiab hlau-rau-hlau hnav tsis kam. Kev cuam tshuam thiab corrosion tsis kam raug txo qis me ntsis. Cov deposits tuaj yeem machined nrog cov cuab yeej carbide.
Cov electrodes ECoCr-B (Cobalt 12) siv tau nrog cov electrodes ECoCr-A (Cobalt 6). Kev xaiv yuav nyob ntawm seb daim ntawv thov twg.
AWS A5.13 ECOCR-C:
Cobalt 1
ECoCr-C muaj feem pua ntau dua (kwv yees li 19%) ntawm cov carbides dua li cov nyiaj tso ua los ntawm kev siv ECoCr-A (Cobalt 6) lossis ECoCr-B (Cobalt 12). Qhov tseeb, cov khoom sib xyaw, yog xws li cov carbides hypereutectic thawj zaug pom muaj nyob rau hauv microstructure. Cov yam ntxwv no ua rau cov hlau tsis kam hnav siab dua nrog rau kev txo qis hauv kev cuam tshuam thiab kev tiv thaiv corrosion. Qhov nyuaj dua kuj txhais tau tias qhov kev nyiam ntau dua tuaj yeem txo qis los ntawm kev saib xyuas ze ntawm kev ua ntej, qhov kub thiab txias interpass, thiab cov txheej txheem tom qab ua kom sov.
Txawm hais tias cov cobalt-chromium deposits mos me ntsis ntawm qhov kub siab, lawv feem ntau suav tias tsis muaj zog rau tempering. ECoCr-C electrodes yog siv los tsim cov khoom xws li mixers, rotors lossis qhov twg muaj kev sib txhuam hnyav thiab kev cuam tshuam tsawg.
AWS A5.13 ECOCR-E:
Cobalt 21
Cov electrodes ECoCr-E muaj lub zog zoo heev thiab ductility hauv qhov kub txog li 1600 ° F (871 ° C). Cov deposits tiv taus thermal shock, oxidizing, thiab txo cov huab cua. Cov ntawv thov thaum ntxov ntawm cov alloys no tau pom nyob rau hauv cov khoom ntawm lub cav dav hlau xws li turbine blades thiab vanes.
Cov khoom tso rau hauv yog cov khoom khov kho uas tau sib xyaw ua ke nrog cov carbide theem qis dua hauv cov qauv me me. Yog li ntawd, cov khoom tso rau hauv yog cov khoom tawv heev thiab yuav ua haujlwm tawv. Cov khoom tso rau hauv muaj kev tiv thaiv zoo heev rau kev sib xyaw ua ke thiab kuj tiv taus kev puas tsuaj ntawm cavitation.
Cov electrodes ECoCr-E siv rau qhov chaw uas qhov kev tiv thaiv rau kev poob siab thermal yog qhov tseem ceeb. Cov ntawv thov ib txwm muaj; zoo ib yam li cov deposits ua los ntawm kev siv ECoCr-A (Cobalt 6) electrodes; guide rolls, hot extrusion thiab forging dies, hot shear blades, tong bits, valve trim.
