Selection of Grinding Wheels for Shear Blades
1. Brown Fused Alumina (A)

Characteristics: High toughness and high hardness.

Applications: Suitable for general grinding and deburring of carbon steel, alloy steel, ordinary steel, and malleable cast iron workpieces.

2. White Fused Alumina (WA)

Characteristics: Higher hardness than Brown Fused Alumina with sharp cutting edges, though it has lower toughness.

Applications: Ideal for grinding quenched steel, alloy steel, high-speed steel (HSS), and high-carbon steel. Commonly used for gear grinding and thread grinding.

3. Pink Fused Alumina / Chrome Corundum (PA)

Characteristics: High toughness, excellent surface finish, and superior edge retention (form holding).

Applications: Suitable for internal grinding and profile grinding of tool steel, alloy steel, and quenched steel. Used for tool grinding, copy grinding, and precision grinding of instrument parts where a high-quality finish is required; specifically designed for heat-treated tools.

4. Green Silicon Carbide (GC)

Characteristics: Low toughness (brittle), high thermal conductivity, and extremely sharp cutting grains.

Applications: Specifically suited for grinding cemented carbide (hard alloy).