First of all, let’s have a general understanding of what materials are suitable for grinding workpieces with diamond grinding wheels and CBN grinding wheels.
Usually, diamond grinding wheels and diamond tools are suitable for processing hard and brittle non-metallic materials, such as glass, ceramics, stone, silicon material, ferrite, semiconductor materials, etc.
CBN grinding wheels are mainly used to process hard and tough materials, especially ferrous metals, such as various steel materials, stainless steel, high-speed steel, hardened steel, and high-carbon steel.
In short, diamond wheels grind most non-metals, and CBN wheels grind most metals.
So the question is, is cemented carbide a metallic material?
The main component of cemented carbide is tungsten carbide, so it is also called tungsten steel.
In the previous video, it was said that the diamond grinding wheel is prone to carbonization when grinding steel. But not when grinding cemented carbide.
The difference between cemented carbide and other metals is that cemented carbide is an alloy material made of hard compounds of refractory metals and bonding metals through powder metallurgy.
Another characteristic of cemented carbide is poor toughness and high brittleness. Diamond grinding wheels are just suitable for grinding hard and brittle materials.
This is why it is difficult for cemented carbide to make integral tools with complex shapes. They are often made into blades of different shapes, which are installed on the cutter body or mold body by welding, bonding, mechanical clamping and other methods.
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