Metallographic cutting discs, also known as metallographic grinding wheels, are mainly used in the sample cutting process during metallographic sample preparation. Metallographic cutting discs originated from wet grinding wheel cutting discs in ordinary grinding wheel cutting. After improving the cutting accuracy and cutting temperature control, metallographic cutting discs suitable for metallographic sample preparation are formed. They are also mainly aluminum oxide resin cutting wheels and silicon carbide resin cutting wheels.
The difference between metallographic cutting disc and ordinary cutting Wheel
1. Cutting wheel thickness: metallographic cutting discs are thinner than general wet grinding wheel discs. For example, the thickness of 300mm diameter alumina general discs is 3.2-3.8mm, and the thickness of metallographic discs is 1.5-2mm. The thinness is to control the plastic deformation of the material structure caused by the cutting stress during cutting feed, and also to control the accuracy of the cutting position.
2. Cutting wheel elasticity: The elasticity of metallographic discs is better than that of ordinary discs. Good elasticity can well buffer the plastic deformation of the sample structure caused by the feed load, flexibly adapt to metallographic cutting, and constantly change the cutting speed to adapt to the changes in the cutting torque output.
3. Cutting wheel accuracy: Metallographic cutting discs are also subdivided into high-efficiency discs and precision discs according to different cutting accuracy. Precision discs have high resin content and good elasticity, and the thickness of cutting wheels is thinner.
