The top ten wear reasons of alloy saw blades, you know?
Carbide alloy saw blades are the most commonly used cutting tools for wood products. The cemented carbide saw blade comprises a plurality of parameters, such as diameter, material, thickness, tooth shape, type, angle, tooth number, aperture, etc., which determine the processing capability and cutting performance of the saw blade. Select saw blade according to the type of sawing material, thickness, sawing speed, sawing direction, feeding speed, saw the width of the road needs to be correctly selected saw blades. The wear of the alloy saw blade is the main reason why the alloy saw blade can not be used for a long time, the wear of the alloy saw Blade has the following ten factors.
1, Phase change wear alloy saw blade in a certain high-speed cutting process, the substrate or material in the temperature over the phase change temperature, the alloy saw blade will be accelerated wear and tear, thereby losing the cutting capacity. such as high-speed steel in 500-600°, Pu Steel 100°, Alloy steel 300-350°, 65 manganese steel 200° temperature will lead to matrix phase transformation.
2, Alloy microstructure in the welding temperature is too high or other factors damage, high-density ultrafine alloy during welding temperature sudden cold sudden heat, or high temperature, resulting in the alloy crystal thickened, alloy cracking, matrix deformation to reduce alloy strength and wear degree.
3, cutting tool wear, angle design and cutting objects, different hardness and various types of plastic materials without the appropriate choice of alloy, also did not according to the cutting hardness in the dry cutting of all aspects of the angle of influence to reduce the tool life.
4, oxidation wear and tear is the alloy saw blade at 800 degree or higher friction temperature, the oxygen in the air and alloy cobalt, tungsten carbide, titanium carbide and other oxidation results in the tool wear.
5, the process and grinding precision affect wear, the alloy circular saw blade is a high-precision cutting tool, any main edge belt and the side edge belt, the end face cutting straight surface, or the radial cutting rather than on a cutting line, forming each alloy in the cutting point or the depth and so on many factors to reduce its use effect.
6, diffusion wear and tear diffusion is a kind of chemical wear, diffusion wear refers to the high temperature cutting between the tool and the workpiece between the alloying elements of the diffusion, so that the physical and mechanical properties of cutting tool material to reduce the wear and tear of the tool. Increasing the temperature of the diffusion of the alloy and the matrix can improve the wear resistance and heat resistance of the tool.
7, bonding wear in cutting plastic materials, cutting and front-facing workpiece and after cutting viscous, tool surface or local strength of the lower particles are cut or workpiece bonding with the brush to make the tool wear.
8, improper maintenance or improper operation caused by wear, alloy saw blade each cutting equipment cutting feed speed is not the same, and alloy circular saw blade is based on different cutting materials and design various angles, the combination of unfavorable will also reduce its effect.
9, mechanical wear workpiece or cutting edge of the tool surface will be carved with different depth of groove to cause wear. Workpiece or cutting edge with ultra-high tool and workpiece hardness ratio of the smaller the tool is easier to wear, so the tool must have a higher hardness.
10, the accumulated tumor wear tool in the feed speed or precision is not high, grinding wheel selection and other factors, alloy saw blade the blade is not grinding good tool in the cutting process of impact load or material toughness is poor, cutting tool angles to the edge of the blade will be caused by shedding factors.