Applications of abrasives

Applications of abrasives

Abrasives are used in their forms

As loose powder
To clean the surface prior to coating, abrasive powders.
Example: Quartz and Garnet.

As abrasive paper (or) cloth
Manufacture of abrasive paper or cloth
The roll of paper or cloth is made to pass through a series of rollers, and a thin coating of glue is applied on its upper side. It is then passed under a hopper from which the grit abrasive is allowed to fall and spread evenly on the glued paper or cloth. Then it is dried in warm drying room.. Finally it is allowed to age few days, so that the glue sets firmly.
Uses: It is used to prepare smooth wood metal and plastic surfaces.
Example: Alumina and Silicon carbide.

As grinding wheels
Manufacture of grinding wheel
Grinding wheel is manufactured by mixing abrasive grains with binder.The mixture is moulded into desired shape and heated and cured.
Uses: It is used for the removal of rust from iron surfaces cutting tool sharpening.