Green Silicon Carbide Abrasive Thiab Polishing Powder: Cov yam ntxwv tseem ceeb
Ntsuab silicon carbide yog siab - purity silicon carbide (SiC) abrasive ua los ntawm fusing roj av coke thiab siab - purity silica xuab zeb nyob rau hauv lub cub tawg hluav taws xob. Nws cov xim ntsuab yog los ntawm cov khoom purity siab (feem ntau txog 99% SiC), uas txawv nws ntawm cov xim dub silicon carbide (li 95-98% SiC). Vim tias nws cov purity ntau dua thiab hardness, ntsuab SiC yog qhov nyiam rau kev sib tsoo thiab polishing ntawm cov ntaub ntawv tawv, nkig. Hauv qab no yog yim tus yam ntxwv uas tseem ceeb tshaj plaws hauv kev siv abrasive thiab polishing.
1. High Hardness
Ntsuab silicon carbidemuaj Mohs hardness txog 9.5 - nyuaj tshaj corundum (Mohs 9) ntawm cov pa abrasives, thiab thib ob tsuas yog pob zeb diamond, cubic boron nitride thiab boron carbide. Qhov hardness no tso cai rau cov abrasive tshem tawm cov khawb me me, tsa cov pob thiab oxide txheej los ntawm cov chaw ua haujlwm sai sai, txhim kho polishing efficiency. Nws yog tshwj xeeb tshaj yog haum rau machining nyuaj thiab nkig cov ntaub ntawv xws li cemented carbide, optical iav thiab ceramics.
| Abrasive | Mohs hardness | Hom txoj hauj lwm |
|---|---|---|
| Pob zeb diamond | 10 | Hardest ntuj abrasive |
| Cubic boron nitride / boron carbide | ≈ 9.5–9.75 | Super{0}} tawv abrasives |
| Ntsuab silicon carbide | ≈ 9.5 | Cov oxide nyuaj tshaj plaws -dawb cov khoom abrasive hauv qab super- qib nyuaj |
| Corundum (Aluminium oxide) | 9 | Cov pa oxide abrasive |
2. Tus kheej zoo heev -Ntxhais
Ntsuab silicon carbide nplej tsis tu ncua tawg thaum lub sij hawm sib tsoo, nthuav tawm cov ntse txiav tshiab thiab tswj kev txiav lub zog dhau lub cuab yeej lub neej. Qhov no zam qhov kev ua haujlwm polishing poob uas cov tsoos abrasives raug kev txom nyem los ntawm passivation (dulling ntawm cov npoo), ua kom cov txheej txheem ruaj khov thiab txhim kho qhov ua tiav ntawm qhov zoo.
3. Kev kub siab thermal stability
Ntsuab silicon carbide muaj qhov kub thiab txias heev thiab tseem nyob hauv lub cev thiab tshuaj lom neeg ruaj khov ntawm qhov kub thiab txias. Nws cov thermal conductivity yog ob peb zaug ntawm aluminium oxide (feem ntau tshaj peb zaug), thiab nws coefficient ntawm thermal expansion yog qis dua li ntawm fused aluminium oxide. Cov khoom no ua kom sib tsoo thiab polishing ruaj khov ntawm qhov kub thiab txias thiab txo cov kev ua yuam kev los ntawm thermal deformation ntawm lub workpiece.
4. Muaj zog tshuaj lom neeg ruaj khov
Ntsuab silicon carbide tiv thaiv los ntawm feem ntau cov kua qaub thiab alkalis thiab qhia tau hais tias zoo oxidation tsis kam ntawm qhov kub thiab txias. Yog li ntawd nws tuaj yeem ua haujlwm tau ntseeg tau rau lub sijhawm ntev hauv cov tshuaj lom neeg nruj heev, uas nthuav dav nws daim ntawv thov ntau yam hauv kev ua lag luam.
5. Uniform Particle Size Distribution
Ntsuab silicon carbide abrasive thiab polishing hmoov muaj ib tug concentrated, uniform particle loj faib nrog zoo li grain loj thiab cov duab thiab txawv txiav npoo. Cov khoom sib xws faib cov quab yuam sib npaug thaum lub sijhawm polishing, tsis txhob khawb qhov chaw lossis qhov tsis sib xws los ntawm cov nplej loj lossis cov nplej tsis zoo, thiab pom kev txhim kho kev ua haujlwm zoo.
6. High thermal conductivity
Vim nws cov thermal conductivity siab, ntsuab silicon carbide zoo haum rau kev sib tsoo workpieces uas rhiab heev rau thermal deformation. Thaum tshav kub kub yog ua kom sai sai thaum sib tsoo, txo qis distortion thiab kev puas tsuaj los ntawm thermal expansion thiab txhim kho machining raug.
7. Kev ua kom huv ntawm qhov chaw siab
Ntsuab silicon carbide sib tsoo thiab polishing hmoov yog tshwj xeeb ua tiav kom ua tiav qhov kev huv huv siab: tsis muaj cov khoom loj thiab tsuas yog cov hmoov av me me xwb. Qhov no txo cov impurity paug thaum polishing thiab txhim kho qhov tiav ntawm machined nto.
8. Muaj zog ua kom haum
Ntsuab silicon carbide yog sib xws nrog cov kua txiav xws li polyethylene glycol daws, uas txhim kho polishing efficiency. Nws kuj qhia tau hais tias muaj kev kub ntxhov siab thiab tsis tshua muaj coefficient ntawm linear expansion nyob rau hauv load, kom ruaj khov txiav cwj pwm thiab zoo compatibility nrog ntau yam kev sib tsoo thiab polishing tshuab.
Ntsuab vs Dub Silicon Carbide: Yam Yuav Siv
| Khoom | Green SiC | Dub SiC |
|---|---|---|
| Hom SiC purity | ≈ 99% | ≈ 95–98% |
| Hardness | Me ntsis nyuaj, sharper npoo | Tsawg me ntsis |
| Hom kev siv | Precision thiab zoo sib tsoo / polishing ntawm cemented carbide, optical iav, ceramics, pob zeb | General sib tsoo, txiav thiab sandblasting ntawm hlau thiab pob zeb |
| Tus nqi txoj haujlwm | Siab dua | qis |
Rau feem ntau cov hlau deburring thiab dav dav sanding, dub SiC yog qhov kev xaiv pheej yig. Rau kev ua haujlwm zoo ntawm cov ntaub ntawv nyuaj, nkig - cov cuab yeej carbide, cov khoom siv kho qhov muag, ceramics - ntsuab SiC muab cov txiaj ntsig zoo dua, zoo ib yam. Cov qoob loo loj yog xaiv los ntawm F-series (los yog sib npaug) grit nplai: ntxhib grits (xws li F20–F60) rau kev tshem tawm sai, nplua grits (xws li F240 thiab siab dua) rau polishing.
Cov ntsiab lus
Ntsuab silicon carbide sib xyaw ua ke siab tawv, tus kheej -ntxhiab tus cwj pwm, thermal thiab tshuaj lom neeg ruaj khov, zoo li qhov loj me, thermal conductivity, qhov huv thiab kev ua kom haum. Cov khoom no ua rau nws cov ntaub ntawv abrasive rau precision sib tsoo thiab polishing ntawm cov ntaub ntawv nyuaj, nkig, thaum dub SiC tseem yog qhov kev xaiv pheej yig dua rau kev ua haujlwm dav dav -.
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