Correct option is A
Vitrified bond is a type of bonding material used in grinding wheels and other abrasive tools. It is created by combining a mixture of clay, feldspar, flint, and frit in varying proportions. These materials are mixed together and then fired at high temperatures to form a hard, glass-like bond. This vitrified bond is known for its high strength and rigidity, making it ideal for precision grinding operations.
- Rubber bond: Rubber bond is flexible and used for specific applications like centerless grinding.
- Shellac bond: Shellac bond is used in light-duty grinding wheels, not made from clay and other minerals.
- Silicate bond: Silicate bonds are also used in grinding wheels but have a different composition and properties compared to vitrified bonds.
Thus, the correct answer is Vitrified bond.
