What is the classification of impact drill bits?
1. The drill bit used to drill metal is high-speed steel, which is black. Holes can be drilled on metal materials such as alloy steel, non-alloy steel and cast iron. When operating, be careful not to rotate too high, and it is easy to burn the bit blade.
2. The stone drill bit is used to drill holes in concrete materials and stone. The blade is made of cemented carbide.
3. Woodworking drill bits are required to drill holes on wooden materials. Woodworking drill bits do not require high tool hardness, and the tool material is high-speed steel. In fact, metal drills can also drill wood. However, because wood is prone to heating, brittle debris is not easy to remove. When drilling holes, it needs to rotate slowly and often needs to remove debris.
4. If you need to drill holes in ceramic tiles or high-hardness glass, you should use ceramic tile drill bits. The tool material should be a high-hardness tungsten-carbon alloy. Pay attention to controlling the drilling speed during use.
Precautions for using impact drills
1. Drill bits of different materials are used to drill different materials. The harder the tool, the worse the toughness, the thinner the drill bit, and the worse the stiffness. Therefore, we should control the speed of drilling. It is best to add appropriate cooling oil or cooling water when drilling holes. Nowadays, some drill bits are coated with hard metal films, which are used to drill steel, iron and other materials without heat treatment. It is easy to stick to the drill bit, so it is best to clean it with soapy water after drilling and lubricate the drill bit.
2. . Before using the drill bit, it is best to drill a sample hole on the material to be drilled to prevent the drill bit from deviating at the beginning and causing inconvenience.
