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Other Abrasives Materials & its related products
Boron Carbides:
TABLES FOR GRAIN SIZE AND CHEMICAL ELEMENTSGrain Size No. |
Basic Grain Size (µm) |
Chermical Elements | |
| Fe2O3 Fe2O3Max(%) | B4C B4Cmin(%) |
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| 60# | 250 | 1.00 | 94 |
| 70# | 212 | ||
| 80# | 180 | ||
| 90# | 150 | ||
| 100# | 125 | 1.50 | 93 |
| 120# | 106 | ||
| 150# | 90-75 | ||
| 180# | 75-63 | 1.50 | 93 |
| 220# | 63-53 | ||
| 240# | 63-53 | ||
| W63 | 63-50 | 2.00 | 90 |
| W50 | 50-40 | ||
| W40 | 40-28 | ||
| W28 | 28-20 | ||
| W20 | 20-14 | ||
| W14 | 14-10 | ||
| W10 | 10-7 | 2.00 | 88 |
| W7 | 7-5 | ||
| W5 | 5-3.5 | 2.00 | 85 |
| W3.5 | 3.5-2.5 | 2.50 | 83 |
| 10µm | <=10µm | 1 | 92 |
| 325 | <=45µm | 1 | 92 |
| #100 | <=150µm | 1 | 94 |
| #200 | <=90µm | 1 | 94 |
| 0-3mm | 0.5 | 95 | |
GENERAL SILICON CARBIDE CERAMIC PRODUCTS
the size and specification table of products. |
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| the name of products | specification | the name of products | specification | ||||||
| length | width | (mm) thickness | length | width | (mm) thickness | ||||
SiC Machine made SiC planks |
340 | 280 | 10 | SiC planks for isolating from fire | 600 | 425 | 40 | ||
| 360 | 310 | 16~25 | 650 | 375 | 40 | ||||
| 350 | 400 | 12 | 730 | 375 | 35 | ||||
| 400 | 450 | 12~16 | 760 | 375 | 40 | ||||
| 440 | 460 | 14~16 | 800 | 275 | 40 | ||||
| 370 | 500 | 14~18 | 820 | 275 | 50 | ||||
| 485 | 525 | 18~22 | 1150 | 425 | 55 | ||||
| SiCbricks | 235 | 115 | 65 | SiC bricks | 315 | 230 | 115 | ||
SiCround boxes |
highness | out diameter | in diameter | depth | SiCsquare boxes |
highness | length | width | depth |
| 37 | 333 | 316 | 8 | 60 | 650 | 470 | 18 | ||
| 29 | 300 | 284 | 8 | 92 | 250 | 205 | 12 | ||
| 125 | 335 | 306 | 15 | 85 | 235 | 197 | 10 | ||
The standards of physical - chemical properties of various SiC ceramics
| Items | Unit | Physical-chemical properties | |||
| SiCplanks | SiCboxes | SiCpipes | SiCbricks | ||
| SiC | % | 92 | 85 | 80 | 65 |
| a-AL2O3 | % | 3~5 | 4~7 | 6~9 | 10~25 |
| the rate of water absorption | % | 6.5~8 | 7.5~9 | 6.5~8 | 7~9 |
| open poresity | % | 17~20 | 19~22 | 20~24 | 16~19 |
| bulk density | g/cm3 | 2.45~2.55 | 2.35~2.45 | 2.35~2.50 | 2.40~2.65 |
| bending strength | MP a | 35 | 30 | 35 | 40 |
| 1400C/2hr.resintecing shrinkage | % | <0.47 | <0.50 | <0.55 | <0.65 |
| 0.2MP a softened temperature | C | 1650 | 1600 | 1600 | 1550 |
| Fire resistance | C | >1790 | 1750 | >1750 | 1790 |
| 20-1400Clinear expansion coefficient | 106/C | 5 | 5.5 | 5.5 | 6.5 |
Compressive strength in normal temperature |
MP a | >90 | >80 | >75 | >60 |
| Thermo-conductivity | 16.28 | 16.28 | 16.28 | 12.98 | |
Nominal Size Range of Abrasive Grains
| Grit designation | Nominal size range (in um) |
Grit designation | Nominal size range (in um) |
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| F | P | F | P | ||
| 12 | 200-170 | 200-1700 | 120 | 125-106 | 125-106 |
| 14 | 1700-1400 | -- | 150 | 106-75 | 106-90 |
| 16 | 1400-1180 | 1400-1180 | 180 | 90-63 | 90-75 |
| 20 | 1180-1000 | 1000-850 | 220 | 75-53 | 75-63 |
| 22 | 1000-850 | -- | 240 | 44.5±2 | 58.2±2 |
| 24 | 850-710 | 850-710 | 280 | 36.5±2 | 52.2±2 |
| 30 | 710-600 | 710-600 | 320 | 29.2±1.5 | 46.2±1.5 |
| 36 | 600-500 | 600-500 | 360 | 22.8±1.5 | 40.5±1.5 |
| 40 | 500-425 | 425-355 | 400 | 17.3±1 | 35.0±1.5 |
| 46 | 425-355 | -- | 500 | 12.8±1 | 30.2±1.5 |
| 50 | -- | 355-300 | 600 | 9.3±1 | 25.8±1 |
| 54 | 355±300 | -- | 800 | 6.5±1 | 21.8±1 |
| 60 | 300-250 | 300-250 | 1000 | 4.5±0.8 | 18.3±1 |
| 70 | 250-212 | -- | 1200 | 3.0±0.5 | 15.3±1 |
| 80 | 212-180 | 212-180 | 1500 | -- | 12.6±1 |
| 90 | 180-150 | -- | 2000 | -- | 10.3±0.8 |
| 100 | 150-125 | 180-150 | 2500 | -- | 8.4±0.5 |
