NK80 die steel is a kind of tool steel with high hardness and high strength, which is widely used in the mold manufacturing industry. In order to meet different processing requirements, it is very important to choose the right grinding wheel for processing NK80 die steel. Here are some commonly used types of grinding wheels and selection principles.
Cutting Grinding Wheel: The cutting grinding wheel is a grinding wheel used to cut and split NK80 die steel. Corundum grinding wheels are usually used for cutting grinding wheels, because corundum grinding wheels have high hardness, high strength and wear resistance, which can effectively cut NK80 die steel.
2.Coarse grinding wheel: Coarse grinding wheel is used for preliminary trimming and surface roughness removal of NK80 die steel. Commonly used coarse grinding wheels are corundum grinding wheels and silicon carbide grinding wheels. Corundum grinding wheels are suitable for dressing harder NK80 die steels, while silicon carbide grinding wheels are suitable for dressing softer NK80 die steels.
3.Medium grinding wheel: The medium grinding wheel is used to trim NK80 die steel with medium precision and remove surface imperfections. Commonly used medium grinding wheels are corundum grinding wheels and alumina grinding wheels. Corundum grinding wheels are suitable for dressing harder NK80 die steels, while alumina grinding wheels are suitable for dressing softer NK80 die steels.
4.Fine grinding wheel: Fine grinding wheel is used to carry out high-precision dressing and surface finish improvement of NK80 die steel. Commonly used fine grinding wheels are diamond grinding wheels and CBN grinding wheels. Diamond grinding wheels are suitable for dressing harder NK80 die steels, while CBN grinding wheels are suitable for dressing softer NK80 die steels.
When choosing a grinding wheel, there are several factors to consider:
Processing requirements: Determine the required grinding wheel type and particle size according to the processing requirements. If different machining stages such as coarse, medium and fine grinding are required, different types and grain sizes need to be selected.
2.Workpiece material: Select the appropriate grinding wheel material according to the hardness and strength of NK80 die steel. For harder NK80 die steel, corundum grinding wheel or diamond grinding wheel should be selected;For softer NK80 die steel, silicon carbide grinding wheels or CBN grinding wheels should be chosen.
3.Grinding wheel hardness: choose the appropriate grinding wheel hardness according to the hardness of NK80 die steel. Generally speaking, the higher the hardness of NK80 die steel, the higher the required grinding wheel hardness.
4.Grinding wheel particle size: Select the appropriate grinding wheel particle size according to the processing requirements and surface roughness. Coarser grinding wheel size can be selected for coarse grinding, and finer grinding wheel size can be selected for fine grinding.
In conclusion, choosing the right grinding wheel is crucial for the machining of NK80 die steel. According to the processing requirements, workpiece material, grinding wheel hardness and particle size and other factors, the selection of suitable grinding wheel type and specification can improve the processing efficiency and processing quality, and prolong the service life of the grinding wheel.