The coated saw blade is obtained by coating a thin layer of refractory metal with good wear resistance on the surface of high-speed steel (HSS) substrate with good strength and toughness by vapor deposition method. As a thermal barrier and chemical barrier, the coating reduces the thermal diffusion and chemical reaction between the saw blade and the workpiece. It has high surface hardness, good wear resistance, stable chemical properties, heat resistance and oxidation resistance, small friction coefficient and thermal conductivity. Low-level characteristics, the life of the saw blade can be increased by several times compared with the uncoated saw blade during cutting. Therefore, the coated saw blade has become a symbol of modern cutting saw blades.
Full high-speed steel saw blade, the color is white steel color, is a saw blade without coating treatment, cutting general non-ferrous metals, such as brass, aluminum and so on.
Nitriding coating (black) VAPO nitriding coating high temperature oxidation heat treatment, the color is dark black, after the chemical element Fe3O4 is subjected to precise special heat treatment, an oxide layer (Fe3O4) is formed on the surface, and the thickness of the oxide layer is about 5-10 Micron, surface hardness is about 800-900HV, friction coefficient: 0.65, this kind of saw blade has a good surface smoothness, which helps to enhance the self-lubricating ability of the saw blade, and the phenomenon that the saw blade is stuck by the material can be avoided to a certain extent. For cutting general materials. Due to its mature processing technology and high cost performance, it is a product widely used in the market.
Titanium nitride coating (golden) TIN After PVD nitrogen titanium treatment, the thickness of saw blade coating is about 2-4 microns, its surface hardness is about 2200-2400HV, friction coefficient: 0.55, cutting temperature: 520°C, this saw The saw blade can greatly increase the service time of the saw blade. In order to make full use of its characteristics, the cutting speed should be increased to reflect its value. The main function of this coating is to make the saw blade more resistant to cutting. For the cutting of general materials, its excellent performance can effectively increase the cutting speed and reduce loss.
Chromium Nitride Coating (Super Coating for short) CrN This coating is particularly resistant to adhesion, corrosion and oxidation. The coating thickness of the saw blade is 2-4 microns, the surface hardness: 1800HV, the cutting temperature is lower than 700°C, and the color is metallic gray. Highly recommended for cutting copper and titanium, the coating process has no impact on the environment. Suitable for cutting copper, aluminum and other materials, with high coating density and surface hardness, and the lowest friction factor among all coatings.
Titanium aluminum nitride coating (color) TIALN This is a new multi-layer anti-wear coating. The saw blade treated with multi-layer PVD coating has achieved a very low friction coefficient. Its surface hardness is about 3000-3300HV. friction coefficient: 0.35, oxidation temperature: 450°C, this kind of saw blade can make the cutting surface very smooth, and the saw blade is more wear-resistant. It is recommended to cut materials with high cutting speed and feeding speed and the cutting tensile strength exceeds 800 N/mm2, such as Stainless steel, etc., used under particularly harsh working conditions.
Aluminum titanium nitride coating (referred to as super A coating) ALTIN This is a new multi-layer composite anti-wear coating, the thickness of this coating is 2-4 microns, the surface hardness: 3500HV, the friction coefficient: 0.4, the cutting temperature Below 900°C, it is recommended to use materials with high cutting speed and feeding speed and cutting tensile strength exceeding 800 N/mm2 (such as stainless steel), and use it under particularly harsh working conditions such as dry cutting. Due to the toughness and good physical stability of the aluminum titanium nitride coating itself, the saw blade is more wear-resistant and suitable for cutting all steel materials. Due to its low friction coefficient and low thermal conductivity, it is especially suitable for dry cutting at high speed and high temperature .
Titanium Carbonitride Coating (Bronze) TICN This is a coating suitable for more severe anti-wear requirements. Recommended for cutting materials with a tensile strength over 800 N/mm2. The thickness of the coating is 3 microns, the coefficient of friction: 0.45, the oxidation temperature: 875°C, and the surface hardness is about 3300-3500HV. It is not only suitable for cutting steel with high strength such as stainless steel, but also can be used for cutting softer materials such as cast iron, aluminum alloy, brass and copper, etc. Due to its low friction coefficient and low thermal conductivity, it is especially suitable for cutting at high speed and high temperature dry cut.
