Carbide saw blades are commonly used cutting tools for wood product processing. The quality of carbide saw blades is closely related to the quality of processed products. The correct and reasonable selection of carbide saw blades is of great significance to improving product quality, shortening processing cycles, and reducing processing costs.
1. Selection of carbide saw blades
Carbide saw blades include multiple parameters such as the type of alloy cutter head, material of the matrix, diameter, number of teeth, thickness, tooth shape, angle, aperture, etc. These parameters determine the processing capability and cutting performance of the saw blade. When choosing a saw blade, you must choose the correct saw blade according to the type, thickness, sawing speed, sawing direction, feeding speed, and sawing path width of the material being cut.
(1) Selection of cemented carbide types
Commonly used types of cemented carbide are tungsten-cobalt (code YG) and tungsten-titanium (code YT). Because tungsten-cobalt carbide has better impact resistance, it is more widely used in the wood processing industry. Commonly used models in wood processing are YG8-YG15. The number after YG indicates the percentage of cobalt content. As the cobalt content increases, the impact toughness and bending strength of the alloy increase, but the hardness and wear resistance decrease. It is necessary to Choose according to actual situation.
(2) Selection of matrix
1. 65Mn spring steel has good elasticity and plasticity, economical material, good heat treatment hardenability, low heating temperature and easy deformation, so it can be used for saw blades with low cutting requirements.
2. Carbon tool steel contains high carbon and high thermal conductivity, but its hardness and wear resistance drop sharply when exposed to temperatures of 200°C-250°C. It has large heat treatment deformation, poor hardenability, and is prone to cracking after long tempering time. Make economical materials for cutting tools such as T8A, T10A, T12A, etc.
3. Compared with carbon tool steel, alloy tool steel has good heat resistance, wear resistance and better processing performance. The heat-resistant deformation temperature is 300℃-400℃, which is suitable for manufacturing high-quality alloy circular saw blades.
4. High-speed tool steel has good hardenability, strong hardness and rigidity, and little heat-resistant deformation. It is an ultra-high-strength steel with stable thermoplasticity and is suitable for manufacturing ultra-thin saw blades with good quality.
