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TiN

What is TiN?

TiN, or titanium nitride, is a gold-colored coating produced by the PVD (Physical Vapor Deposition) method. This coating is one of the most commonly used for tools and components thanks to its excellent properties. TiN is especially known for its hardness and smoothness, making it an ideal choice for many different machining tools.

Production of TiN Coating Using the PVD Method

In the PVD process, material is vaporized and condensed onto the surface of a tool, forming a hard and durable coating. In the case of TiN, titanium and nitrogen are used. These react to form a uniform gold-colored film on the surface of the tool.

Technical Properties of TiN

  • Hardness: TiN coatings are extremely hard, with a microhardness of about 2000-2500 HV. This makes them excellent for protecting tools from wear and mechanical stress during machining.
  • Heat resistance: TiN coatings can withstand very high temperatures, up to about 600°C, which makes them suitable for use in many different machining conditions.
  • Low coefficient of friction: TiN coating reduces friction between the tool and the material being worked, improving the surface quality of the workpiece and reducing tool wear.
  • Chemical stability: TiN is chemically stable and provides protection for the tool against reactive environments, which improves tool durability, especially in conditions that cause corrosion.

Benefits of TiN

  • Increased cutting speeds: The use of TiN coatings allows for higher cutting speeds compared to uncoated tools, enhancing production efficiency.
  • Extended tool life: TiN coating prevents the formation of built-up edges and increases wear resistance, which extends tool life and reduces the need for replacements, thereby lowering overall costs.
  • Improved performance: Enhanced wear resistance and reduced friction boost tool performance, leading to better results and higher-quality workpieces.

Applications for TiN

  • Drills and taps: TiN coating is popular on drills and taps because it significantly improves the wear resistance and performance of these tools. Durability against wear and reduced friction make machining processes smoother and extend tool life.
  • Cutting tools: Milling, turning, and other cutting tools benefit from the hardness and wear resistance of TiN coating, improving tool durability and lowering production costs.
  • Forming tools: The low friction and high wear resistance of TiN make it an ideal option for a variety of forming tools, such as presses and molds, where precision and high surface quality are required.

Summary

TiN (titanium nitride) is a versatile and effective coating that significantly enhances the performance and durability of tools. Its excellent wear resistance, low friction, and high heat resistance make it an ideal choice for many machining tools and applications. TiN coating offers significant advantages, such as higher cutting speeds, longer tool life, and better machining results.