As the requirements for cutting performance increase, all aspects of Tungsten carbide drill bits have undergone great changes. Regardless of the product's own performance or the market's requirements for it, merchants are constantly improving their own quality to provide users with high-quality Tungsten carbide drill bits. Today I will talk about the advantages of Tungsten carbide drill bits coating for aluminum.
What are the characteristics of aluminum milling cutter coating?
1. Hardness
The high surface hardness brought by the Tungsten carbide drill bits coating for aluminum is one of the ways to improve tool life. Generally speaking, the higher the material or surface hardness of Tungsten carbide drill bits, the longer the life of Tungsten carbide drill bits for aluminum. Tungsten carbide drill bits coating for titanium carbide aluminum nitride has higher hardness than titanium nitride coating.
2. Abrasion resistance
Wear resistance refers to the ability of the coating to resist wear. Although the hardness of some workpiece materials may not be too high, the elements added during the production process and the selected process may cause the cutting edge of the tool to crack or blunt.
3. Surface lubricity
A high coefficient of friction will increase its cutting heat, resulting in shortened coating life or even failure. Reducing the coefficient of friction can greatly extend the life of Tungsten carbide drill bits for aluminum. The fine and smooth or regular-grained aluminum milling cutter coating surface helps to reduce the cutting heat. The smooth surface can quickly slide the chips away from the rake face and reduce the heat generation. Compared with uncoated tools, coated tools with better surface lubricity can be processed at a higher cutting speed, and then further avoid high temperature welding with workpiece materials.
4. Oxidation temperature
The oxidation temperature refers to the temperature at which the coating begins to differentiate. The higher the oxidation temperature, the more advantageous it is for cutting under high temperature conditions. Although the room temperature hardness of the coating may be lower than that of the coating, it has been proved that it is much more effective in high temperature processing. The reason why the coating can maintain its hardness at high temperatures is that a layer of aluminum oxide can be formed between the tool and the chips, and the aluminum oxide layer can transfer heat from the tool to the workpiece or chips.
5. Anti-adhesion
The anti-adhesion of the Tungsten carbide drill bits coating for aluminum can prevent or reduce the chemical reaction between the tool and the processed material, and prevent the workpiece material from depositing on the tool. When processing non-ferrous metals (such as aluminum, brass, etc.), built-up edge (BUE) often occurs on the tool, which causes the tool to collapse or the workpiece size is out of tolerance. Once the processed material begins to adhere to the tool, the adhesion will continue to expand.
The above is an introduction to the advantages of the coating of Tungsten carbide drill bits for aluminum. From the above, you can understand the characteristics of the coating of Tungsten carbide drill bits. Therefore, you can refer to it when you buy aluminum milling cutters.
