Duratech Coating, Inc is proud of our state of art PVD coating technologies.

How it works: All material to be coated is enclosed in a vacuum chamber. This chamber is then gently heated to a specific temperature. Deposition material such as titanium is vaporized by means of an electric arc. The highly charged titanium ions are mixed with nitrogen gas and form plasma. This positively charged titanium plasma is attracted to the negatively charged part to be coated. Ion by Ion, the titanium bonds to the part, growing a thin, hard film on the surface.

PVD coating are thin films, typically only a few microns thick, that are deposited on tools and machine elements in a vast array of industries. In the areas of machining and tooling PVD coating are widely used to increase the life and productivity of production tools and therefore reducing manufacturing costs.

The first PVD coating to be used successfully to machine steel in industry and still the most recognized is titanium nitride. TiN distinguished by it is decorative bright gold color. The TiN coating is wear resistant ceramic coating suitable of wide range of applications, materials and cutting conditions where extended tool life and elevated feeds and speeds are required, TiN has a quit low friction coefficient that helps chip flow, prevents build up of workpiece material at the tool edge and reduces cutting forces and tool temperature.

TiN coating is used for machining (carbon, alloy, and stainless steels, cast irons, and aluminum alloys) and protecting dies, molds, punches, and a range of metal stamping and forming tools. TiN coatings are also used for decorative components and as a direct gold plating replacement as it approximately the same color and are corrosion resistant.

TiN has now been superseded in many applications by titanium aluminum nitride, TiAlN. The TiAlN coating offers superior performance for a range of metal machining and fabrication applications. The reason for this lies in the addition if aluminum to TiN or specifically the formation of aluminum oxide on the surface of the tool which increases the operational temperature range of the coating to 800°C. This has recently been increased by the addition of chromium and yttrium or vanadium to the coating increasing the temperature range to beyond 900°C. The TiAlN coating is also a tough ceramic resulting in a reduction in coating chipping.

The properties of the TiAlN coating make it suitable for high temperature cutting operations with minimal use of lubricant or dry machining. TiAlN is used successfully to machine titanium. Aluminum and nickel alloys, stainless steels, alloy steels, cast irons. TiAlN coatings are also used to protect dies and molds that are required to operate at high temperatures such as those in medium and hot forging and extrusion industries.