Improve hardness: Spraying hard coatings such as tungsten carbide and titanium nitride on the surface of the tool through thermal spraying technology can significantly improve the hardness of the tool. Taking tungsten carbide tools as an example, after spraying tungsten carbide coating, it can more easily cut high-hardness materials, such as quenched steel, alloy steel, etc., to improve cutting efficiency and machining accuracy.
Enhance wear resistance: During the cutting process, there is strong friction between the cutting edge and the workpiece, which can easily lead to tool wear. Thermal spray ceramic coatings, such as alumina, silicon nitride, etc., can effectively improve the wear resistance of the tool surface. For example, when a silicon nitride ceramic coating is applied to the surface of a milling cutter, the amount of wear when cutting aluminum alloys at high speeds is significantly reduced, and the tool life is increased by a factor of 2 to 3.
Improved lubricity: In order to reduce the coefficient of friction between the tool and the workpiece, solid lubricating coatings such as molybdenum disulfide and fluoride can be thermally sprayed. During the drilling process, the coefficient of friction of a drill bit coated with molybdenum disulfide coating can be reduced by 30% to 50%, resulting in less cutting force and a smoother cutting process, helping to improve the surface quality of the machined surface and reduce tool wear and breakage.