Suitable Grinding Disc for Different Grinding Materials

The type of grinding disc you choose for a particular grinding job is dependent on the material you will be grinding. Different materials have varying hardness, toughness, and fragility, which affect the type of abrasive and bond needed for the grinding wheel. Here are some common materials and the type of grinding disc that is suitable for each:

1. Steel

Steel is a hard, tough material that requires a hard abrasive and a strong bond. The most common abrasives used for grinding steel are aluminum oxide and silicon carbide. A vitrified bond or a resinoid bond is usually used for grinding steel.

2. Cast Iron

Cast iron is a brittle material that can crack or break easily. A softer abrasive, such as aluminum oxide, is recommended for grinding cast iron, as it will produce a smoother surface finish. A vitrified bond or a resinoid bond is suitable for grinding cast iron.

3. Stainless Steel

Stainless steel is a softer material than steel, but it can be more difficult to grind due to its tendency to heat up during grinding. A vitrified bond or a resinoid bond with a finer grit size is recommended for grinding stainless steel.

4. Non-Ferrous Metals

Non-ferrous metals, such as aluminum, brass, and copper, are softer materials that can be easily scratched. A softer abrasive, such as aluminum oxide, is recommended for grinding non-ferrous metals, and a vitrified bond or a resinoid bond is suitable.

5. Concrete and Stone

Concrete and stone are hard materials that require a hard abrasive and a strong bond. Diamond or cubic boron nitride (CBN) abrasives are commonly used for grinding concrete and stone, and a metal bond is usually used.

6. Wood

Wood is a soft material that requires a soft abrasive and a flexible bond. Aluminum oxide or silicon carbide abrasives with a resinoid bond are suitable for grinding wood.

7. Glass

Glass is a fragile material that requires a soft abrasive and a flexible bond. Diamond abrasives with a resin bond or CBN abrasives with a metal bond are suitable for grinding glass.

In conclusion, the type of grinding disc you choose for a particular grinding job depends on the material you will be grinding, as well as the grinding conditions. Harder materials require harder abrasives and stronger bonds, while softer materials require softer abrasives and more flexible bonds. Always consider the material's hardness, toughness, and fragility when choosing a grinding disc, and take into account the grinding conditions and the type of coolant being used to ensure you choose the right disc for your specific grinding needs.