Product Features
TiN Coating - Methods for applying coatings to hard materials like TiC (Titanium Carbonitride) and TiN (Titanium Nitride) generally involve two techniques: Chemical Vapor Deposition (CVD) and Physical Vapor Deposition (PVD). The CVD process operates at temperatures of 900-1100°C, exceeding the tempering temperature of high-speed steel, thus it's not suitable for surface coating on high-speed steel. PVD, with lower temperatures below 500°C, is ideal for coating high-speed steel taps and milling cutters. Among PVD methods, HCD ion plating is particularly representative and commonly used. The basic process of HCD ion plating involves placing the coating material titanium (Ti) in a crucible within a high-vacuum chamber, melting it with electron beams and reacting it with nitrogen to form a dense, strong TiN coating on the preheated tool surface under negative voltage. The TiN coating is golden yellow and has excellent adhesion to the tool substrate. The thickness of the TiN coating on taps is 1-3 micrometers. **Features of TiN Coating:** - Increases surface hardness and wear resistance. - Reduces friction coefficient. - Prevents adhesion. - Enhances heat resistance. These features fully achieve the initial goal of surface treatment for tools, as previously mentioned, surface nitriding can also increase tool surface hardness, but TiN coating has a higher hardness of 2000HV, about three times that of high-speed steel. Compared to other nitrides and carbides, TiN has similar thermal conductivity and coefficient of thermal expansion to high-speed steel, resulting in high adhesion strength. TiN coating significantly reduces friction coefficients, for instance, the friction coefficient of TiN coating for nickel is only 50% of that for high-speed steel. **Application Range:** TiN-coated taps combine the benefits of nitriding and oxidation treatments, offering excellent performance on both soft and hard materials. Its wide application range includes general rolling structural steel, stainless steel prone to adhesion, and alloy tool steel, all of which exhibit excellent cutting performance. TiN coating features: - Increases surface hardness and wear resistance. - Reduces friction coefficient. - Prevents adhesion. - Enhances heat resistance.
Product Real Photos
