ASTM F75 UNS R30075 CoCr28Mo6 Alloy
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ASTM F75 (CoCr28Mo6, UNS R30075, ISO 5832-4) yog cobalt cam khwb cia-chromium-molybdenum alloy tshwj xeeb tsim los rau kev phais kev cog hniav.
Nyob rau hauv lub cheeb tsam ntawm orthopedic implants, cov ntaub ntawv no tuav ib tug keeb kwm sawv cev piv rau cov iPhone nyob rau hauv lub smartphone kev lag luam-thaum tsis yog thawj hom, nws yog thawj zaug ua tau zoo coj mus muag thiab saws nyob rau hauv ib tug loj scale. Nws tau siv rau hauv cov pob qij txha pob qij txha txij li xyoo 1930s thiab tseem yog qhov kev xaiv tseem ceeb rau kev kho hniav thiab cam khwb cia rau niaj hnub no.
Nws cov ntawv thov raug suav nrog: lub taub hau femoral thiab acetabular khob rau pob qij txha pob qij txha (castings), kho hniav crowns, txuas hniav, thiab cov hniav hniav, cov tais tibial rau hauv caug pob qij txha (castings), txha nraub qaum sab hauv kho cov cuab yeej, thiab cov cuab yeej phais.
Cov yam ntxwv tseem ceeb
- ASTM F75 yog cam khwb cia hlau.
- Carbides - Lub hauv paus ntawm hnav tsis kam.
- Chromium thiab Molybdenum - Kev tiv thaiv dual tiv thaiv corrosion.
- Tsis yog -magnetic - Tsis cuam tshuam nrog MRI.
CoCrMo (ASTM F75) Cov tshuaj muaj pes tsawg leeg
(ASTM F75 / UNS R30075)
|
Cobalt (zeeg) |
Chromium (Cr) |
Molybdenum (hli) |
Nickel (Ni) |
Hlau (Fe) |
Manganese (Mn) |
Silicon (Si) |
Cov pa roj carbon (C) |
Nitrogen (N) |
|---|---|---|---|---|---|---|---|---|
|
63.0% |
29.0% |
6.0% |
1.0% |
1.0% |
0.5% |
0.3% |
0.15% |
0.1% |
Physics thiab Mechanical Properties
(Raws li -cast condition)
|
xwm txheej |
Tensile zog (MPa) |
Yield zog (MPa) |
Impact zog (J) |
Hardness (HRC) |
Young's Modulus (GPa) |
Poisson tus ratio |
Elongation (%) |
Qhov ceev (g / cm³) |
|---|---|---|---|---|---|---|---|---|
|
Raws li Sintered |
750 |
550 |
30 |
38 |
220 |
0.3 |
9 |
8.35 |
Kev sib piv nrog ASTM F1537 Forged Alloys (Qhov tseem ceeb rau kev txiav txim siab xaiv cov khoom)
| Cov khoom sib piv | ASTM F75 (Ntaus) | ASTM F1537 (Forged) |
| Cov ntsiab lus carbon | Cov pa roj carbon ntau (0.25-0.35%) | Tsawg rau Nruab Nrab Carbon (tsawg dua lossis sib npaug li 0.14% -0.35%) |
| Yield zog | Ntau dua lossis sib npaug li 450 MPa | Ntau dua lossis sib npaug rau 517 MPa (siab dua) |
| Elongation | Ntau dua lossis sib npaug li 8% | Ntau dua lossis sib npaug li 12-20% (siab dua) |
| Microstructure | Coarse Dendrites + Grain Ciam Teb Carbide Network | Zoo, Uniform Equiaxed Grains |
| Cov txheej txheem | Precision Casting | Kub Forging / Kub Rolling |
| Siv tau Scenarios | Complex -zoo li tus castings (dental crowns, acetabular khob) | Siab -kev nyuaj siab load-cov khoom siv bearing (femoral stems) |
Cov tswv yim xaiv:"Qhov kev xaiv yog nyob ntawm cov duab thiab cov ntaub ntawv thov. Rau qhov chaw nrog cov geometries complex, loj ntau lawm, los yog cov uas tuaj yeem tsim nyob rau hauv ib qho kev lag luam casting, xaiv F75; rau cov khoom uas yuav tsum tau hnyav loads -yuav tsum tau superior zog thiab toughness - xaiv F1537 forged bar."
Machining thiab kev kho cua sov
Qhov no yog qhov txawv tshaj plaws ntawm ASTM F75 thiab forged alloys. Cov txheej txheem casting nws tus kheej qhia txog qee qhov tsis xws luag hauv microstructural, uas yuav tsum tau tshaj tawm - ua kom kho.
1. Kub Isostatic Pressing (HIP)-Ib qho "Yuav tsum tau kawm" rau F75
Raws li -cam khwb cia F75 cov ntaub ntawv uas yog muaj nyob rau hauv casting microporosity thiab shrinkage defects. Yog li ntawd, 99% ntawm F75 castings undergo Kub Isostatic Pressing (HIP) ua ntej xa khoom. Castings uas tsis dhau HIP tuaj yeem pom lub neej qaug zog tsuas yog ib qho -peb rau ib -ib nrab ntawm HIP- kho qhov chaw. Yog tias cov khoom siv los siv rau hauv kev thauj khoom- cov ntawv thov cov kabmob, nws yog qhov tsim nyog los xyuas kom meej tias tus neeg muag khoom tau ua HIP kev kho mob.
2. Kev Kho Mob - Kho Carbide Morphology
F75 tuaj yeem kho qhov kev daws teeb meem los kho cov morphology thiab kev faib tawm ntawm carbides; Txawm li cas los xij, qhov kev txhim kho ntawm cov cuab yeej ua tiav los ntawm kev kho cua sov yog tsawg tshaj tawm hauv cov cam khwb cia hlau piv rau forged alloys.
3. Machining - Cast Condition yog qhov nyuaj rau lub tshuab dua li qhov Forged Condition
Cam khwb cia F75 nthuav tawm ib qho kev nyiam tshaj plaws rau kev ua haujlwm hnyav. Cov lus pom zoo:
Tooling: Carbide los yog CBN
Tswv yim: Tsawg txiav ceev + siab pub tus nqi + txaus txias
Pob zeb diamond sib tsoo lub log yog tsim nyog tshaj silicon carbide sandpaper rau ntxhib sib tsoo.
Kev Sib Txuas Lus
Ua ntej pib nrog cov lus hais, cov ntsiab lus hauv qab no yuav tsum tau qhia meej:
- Yam khoom twg koj npaj yuav siv qhov no rau - kho hniav lossis orthopedic?
- Puas yog HIP (Kub Isostatic Pressing) yuav tsum tau kho? - Pom zoo heev rau kev thauj khoom -cov kabmob.
- Dab tsi yog qhov yuav tsum tau ua kom tiav? - Polishing, sandblasting, thiab passivation.
- Puas yuav tsum tau kuaj xyuas tshwj xeeb? - X-Ray flaw detection, fluorescent penetrant testing, thiab tensile bar testing.
- Puas yog tus me nyuam yuav tsum tau ua raws li precision castings? - Kev xa ncaj qha ntawm cov khoom tiav, hais raws li kev kos duab engineering.
- Los yog kev xa khoom yuav tsum ua raws li tus tswv alloy rods / ingots? - Rau cov neeg siv khoom siv casting (ib qho kev coj ua ntawm peb cov neeg siv khoom).
- Kev kos duab thiab kev kam rau siab.
susan@lorkgroup.com
+8619937075488
Lork Group – Koj qhov chaw ntseeg siab rau kev kho mob-Qib Cobalt Alloys!
Cim npe nrov: astm f75, uns r30075, cobalt chromium alloy, - hwm kev phais cov khoom cog, chaw tsim tshuaj paus, hoobkas
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