|
|
| |
|
|
|
Abrasive Wheel
 Grinding Wheel Marking
 |
Grinding Wheel Making |
| |
|
|
FACTORS AFFECTING WHEEL SELECTION |
| |
Considering to select a suitable specification of grinding wheel |
| |
1. The material to be ground and its hardness
· ABRASIVE : Aluminum oxide for steel and steel alloys.
Silicon carbide for cast iron, non-ferrous and non-metallics.
· GRIT SIZE : Fine grit for brittle materials. Coarse grit for ductile materials.
· GRADE : Hard grade for soft materials. Soft grade for hard materials.
2. The amount of stock to be removed and the finish required
· GRIT SIZE : Coarse grit for rapid stock removal as in rough grinding.
Fine grit for high finishing.
· BOND : Vitrified for precision cutting. Resinoid and Rubber for high speed cutting.
3. Wet or dry
· GRADE : Wet grinding, as a rule, permits use of wheels at least one grade harder
than that of dry grinding without danger of burning the work.
4. The wheel speed
· BOND : Standard vitrified wheels are not exceeding 2,000mpm, for higher speeds
are up to 3,600mpm.
Standard organic bonded wheels(Resinoid, Rubber or Epoxy) are used of
most applications over 2,000mpm up to 6,000mpm.
· NOTE : Do not exceed the safe operating speed shown on a wheel tag or blotter.
5. The contact area of grinding
· GRIT SIZE : Coarse grit for large contact area.
Fine grit for small contact area.
· GRADE : The smaller contact area, the harder wheel.
|
|
|
|
|
