Tungsten Carbide Coated Tool Multilayer Coating Structure

With the advancement of technology, machining technology advances, single-layer coating has been unable to meet the job requirements of tungsten carbide coated tools. The method of forming a multi-layer structure can take advantage of a single-layer coating in excellent mechanical properties of the original advantage of the conditions to further improve its hardness, toughness and high temperature oxidation resistance, is to improve Carbide Coated Cutting Tools important technical measures. Single Al2O3 coating has many fine performance, but the combination of strength Al2O3 single poor coating and the substrate, on the substrate by depositing a layer of TiCN or (Ti, Al) N (e.g. TiCN / Al2O3, TiAlN / Al2O3) can significantly improve the bonding strength of Al2O3 coating and tool performance is greatly improved.

ZrN Coating Tungsten Carbide Coated Tools Introduction

Tungsten carbide coated tools in addition to ZrN coatings resistant to corrosion, high temperature, wear resistance, but also has good mechanical properties and electrical conductivity, beautiful golden appearance and so on. ZrN coating has been widely used in electronic circuit electrical contact layers, the jewelry industry and mechanical friction decorative layer of anti-friction layer, but not a common tool coating applications. With advances in machinery manufacturing technology continues to high-precision, high-speed direction, so the cutting tool in strength, high temperature, wear resistance and service life and other aspects of the performance requirements is also rising. The tool coating treatment is one of the important means to improve the performance of the tool. Because coating can improve the processing efficiency and accuracy, longer tool life, reduce processing costs, and therefore, the coating of metal cutting tools used in more and more widely.