Requirements for tools in milling processing

In the process of cutting metal, the cutting part of the tool operates under conditions of greater cutting pressure, higher cutting temperature and strong friction. When cutting is uneven or interrupted, the tool will be subject to strong impacts and vibrations, so the part of the material cut by the tool must have the following properties:

1. High hardness. Hardness is the most basic property of tool materials. Its hardness must be higher than the hardness of the workpiece material in order to cut off excess metal on the workpiece.
2. High wear resistance. High wear resistance is the ability of the tool to resist wear. Tool wear should be small under strong friction, especially when the tool processes a large number of materials. If the tool is not durable and wears out quickly, it will affect the processing quality and the quality of the workpiece. Accuracy.
3. Sufficient strength and endurance. Tools must withstand various pressures and impacts during cutting. Bending strength and impact strength are usually used to measure the strength and toughness of materials.
4. High heat resistance and chemical stability. High heat resistance means that the tool can maintain its original hardness, strength, impact strength and wear resistance at high temperatures. Chemical stability means the ability to resist chemical reactions with the processed materials or surrounding substances at high temperatures, including antioxidant capacity. The higher the chemical stability, the slower the tool wears out and the better the quality of the processed surface.