Green
silicon carbide(GC)
It is used to grind hard and brittle metal, non-ferrous metals like
copper, brass, aluminum and magnesium, and non-metallic materials
such as gem, optical glass, ceramics, etc. |
Grain
Types and Grades |
| Usage |
For
vitrified wheels and belts |
For organic wheels
|
For sheets |
| Type & Grade |
GC |
GC-B |
GC-P |
| Chemical Composition(GB/T 2480-1996)
|
|
| Type & Grade
|
Grit Size
|
Chemical composition (%, by weight)
|
| SiC |
F.C |
Fe2O3 |
| GC |
F20～F90
|
≥99.0 |
≤0.20 |
≤0.20 |
| F100～F150
|
≥98.5 |
≤0.25 |
≤0.50 |
| F180～F220
|
≥97.5 |
≤0.25 |
≤0.70 |
| W63～W20
|
≥97.0 |
≤0.30 |
≤0.70 |
| W14～W10
|
≥95.5 |
≤0.40 |
≤0.70 |
| W7～W5 |
≥94.0 |
≤0.50 |
≤0.70 |
| P12～P100
|
≥99.0 |
≤0.20 |
≤0.20 |
| P120～P150
|
≥98.5 |
≤0.25 |
≤0.50 |
| P180～P220
|
≥97.5 |
≤0.25 |
≤0.70 |
| P240～P1000
|
≥97.0 |
≤0.30 |
≤0.70 |
| P1200 |
≥95.5 |
≤0.40 |
≤0.70 |
| GC-B |
F20～F90
|
≥98.5 |
≤0.25 |
≤0.25 |
| F100～F150
|
≥98.0 |
≤0.30 |
≤0.55 |
| F180～F220
|
≥97.0 |
≤0.30 |
≤0.80 |
| W63～W20
|
≥96.5 |
≤0.35 |
≤0.80 |
| W14～W10
|
≥94.5 |
≤0.45 |
≤0.80 |
| W7～W5 |
≥93.0 |
≤0.60 |
≤0.80 |
| GC-P |
P12～P100
|
≥98.5 |
≤0.25 |
≤0.25 |
| P120～P150
|
≥98.0 |
≤0.30 |
≤0.55 |
| P180～P220
|
≥97.0 |
≤0.30 |
≤0.80 |
| P240～P1000
|
≥96.5 |
≤0.35 |
≤0.80 |
| P1200 |
≥94.5 |
≤0.45 |
≤0.80 |
Note: Special requirement on chemical
composition can be satisfied through discussion.
|
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