The article discusses recent advancements in tungsten carbide tool technology, emphasizing the growing demand for high-speed, high-precision, and high-quality machining. As machine tools evolve to meet these demands, the need for improved surface treatment of molds, cutting tools, and mechanical components has become more critical. Industry stakeholders are continuously seeking ways to extend tool life, reduce production costs, and maximize profitability.
To keep up with high-speed machining, tool enhancement has become a key focus. Tungsten carbide tools are increasingly favored due to their superior hardness and wear resistance, which make them ideal for demanding applications. However, achieving optimal performance requires careful selection of surface treatments based on the specific application.
For medium and heavy load molds, such as those used in cold forging dies, hydraulic drawing dies, and tungsten carbide drawing lines, CVD (Chemical Vapor Deposition) titanium plating at high temperatures is typically recommended. This process is often combined with precision vacuum heat treatment to control deformation. On the other hand, for tools, molds, or mechanical parts with lower loads or precise requirements, low-temperature PVD (Physical Vapor Deposition) titanium plating—operating between 150°C and 500°C—is more suitable.
Aluminum titanium nitride coatings with a high aluminum content can form a protective layer of aluminum oxide on the hard film surface. This oxide layer significantly improves oxidation resistance, allowing the ceramic hard film to withstand temperatures up to 923°C. This protection helps maintain the high-temperature hardness of tungsten carbide cutting tools during high-speed operations. However, titanium nitride and titanium carbonitride coatings tend to produce titanium oxide films that do not adhere well, leading to flaking and reduced protection. This results in faster oxidation and degradation of the coating.
Therefore, regardless of whether the coating is applied at high or low temperatures, it is essential to use a suitable substrate, stable heat treatment, and proper surface pre-treatment, including fine grinding and polishing, to ensure optimal performance and durability.
Another important aspect discussed is the use of ultra-high temperature resin bond diamond grinding wheels. While their processing efficiency is lower compared to METROX grinding wheels, they offer advantages such as high bonding strength, shorter production cycles, and lower costs. They are especially effective when grinding tool edges, as they minimize chipping. Additionally, these wheels can be shaped into various forms according to specific needs, which is why they have remained widely used in industrial production for many years. The challenge now is to further enhance their grinding performance to meet the evolving demands of modern manufacturing.
Waterproof Testing Instruments
Environment Testing Instruments,Waterproof Testing Device,Handheld Sprinkler,Spray Nozzle
Guangdong Yuwei Testing instrument Co., Ltd , http://www.yuweiinstrument.com