Select high-hardness base materials: High-hardness materials are the cornerstone of ensuring the wear resistance of cutting tools. Common ones include cemented carbide, which is mainly composed of tungsten carbide and metals such as cobalt as binders. Cemented carbide has extremely high hardness and can effectively resist the wear caused by the processing of small parts. For example, cemented carbide with a high cobalt content has a certain toughness while maintaining high hardness, reducing the risk of tool chipping during cutting, thereby ensuring the wear resistance of the tool.
Optimize powder metallurgy process: Powder metallurgy process plays a key role in the manufacture of nc spiral cutter. By strictly controlling the particle size and purity of the raw material powder, the microstructure of the manufactured tool material is ensured to be uniform. The uniform structure can make the tool more balanced when it is subjected to cutting force, avoiding rapid wear caused by local stress concentration. In addition, precise control of the sintering temperature and time in the powder metallurgy process can further optimize the internal structure of the tool and enhance its wear resistance.
Use advanced coating technology: The coating is like putting a layer of solid "armor" on the tool. Physical vapor deposition (PVD) technology is often used to coat titanium nitride (TiN), titanium aluminum nitride (TiAlN) and other coatings on the surface of the tool. TiN coating has good hardness and chemical stability, which can significantly reduce the friction coefficient between the tool and the workpiece, reduce the generation of cutting heat, and thus improve the wear resistance of the tool. TiAlN coating shows better performance at high temperatures, and is particularly suitable for high-speed cutting of tiny parts.
Fine grinding: Grinding is an important part of ensuring tool accuracy and surface quality. When manufacturing nc spiral cutter, high-precision grinding equipment and processes are required. Fine grinding can make the cutting edge of the tool sharper and more uniform, and reduce the microscopic defects of the cutting edge. The improvement of the cutting edge quality not only helps to reduce the cutting force, but also reduces the abnormal wear between the tool and the workpiece, thereby improving the overall wear resistance of the tool.
Precise control of microstructure: Precise control of the microstructure of the tool material is the key to improving wear resistance. Through appropriate heat treatment processes, such as quenching and tempering, the crystal structure of the material can be adjusted to achieve the best hardness and toughness match. For example, quenching at a suitable temperature can refine the grains and improve the strength and hardness of the material; while the subsequent tempering treatment can eliminate the quenching stress, improve the toughness of the material, and enhance the wear resistance of the tool from a microscopic level.
Strict quality inspection process: Strict quality inspection runs through the entire manufacturing process. At the raw material stage, the composition and particle size of the powder are tested; during the processing, the dimensional accuracy and surface roughness of the tool are monitored; at the finished product stage, the actual wear resistance of the tool is evaluated by means such as wear tests. Only tools that have undergone rigorous testing can ensure that they have good wear resistance and meet the needs of precision machining of tiny parts.
Continuous process improvement and innovation: With the continuous development of micro-part machining technology, the manufacturing process of nc spiral cutter also needs continuous improvement and innovation. R&D personnel continue to explore new material formulas, processing technologies and coating technologies to further improve the wear resistance of tools. For example, the new nano-composite materials under research are expected to bring new breakthroughs in improving tool wear resistance and provide better quality tools for precision machining of tiny parts.
