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How to choose a blade

Update:28 Aug 2017
Summary:

    Saw blades are commonly used in woodworking cutting […]

    Saw blades are commonly used in woodworking cutting tools, the quality of carbide saw blade and the quality of processed products are closely related. Correct and rational selection of carbide saw blade for improving product quality, shorten the processing cycle, reduce processing costs is of great significance. Select the blade according to the type of sawing material, thickness, sawing speed, the direction of sawing, feeding speed, saw the width of the need to correctly select the blade.
Substrate selection
   1.65Mn spring steel elasticity and plasticity, material economy, heat treatment hardenability is good, its heating temperature is low, easy to deformation can be used for cutting requirements of the blade is not high.
   2. Carbon tool steel with high thermal conductivity of carbon, but by 200 ℃ -250 ℃ temperature when the hardness and wear resistance decreased sharply, heat treatment deformation, poor hardenability, tempering time is easy to crack. For the manufacture of economic materials such as T8A tool, T10A, T12A and so on.
   3. Alloy tool steel and carbon tool steel compared to heat resistance, good wear resistance, good handling performance, heat distortion temperature of 300 ℃ -400 ℃ suitable for the manufacture of better alloy circular saw blade.
   4. High-speed tool steel has good hardenability, hardness and rigidity, heat deformation is less, is a high-strength steel.
The choice of diameter
   The blade diameter is related to the thickness of the sawing equipment used and the thickness of the sawing work. Saw blade diameter is small, the cutting speed is relatively low, saw blade diameter on the saw blade and sawing equipment requirements will be high, while cutting efficiency is also high. The outer diameter of the saw blade is selected according to the size of the circular saw machine. The diameter of the standard parts are: 110MM (4 inch), 150MM (6 inch), 180MM (7 inch), 200MM (8 inch), 230MM (9 inch), 250MM (10 inch), 300MM (12 inch) 14mm), 400MM (16 inch), 450MM (18 inch), 500MM (20 inch), etc., precision cutting saw the bottom of the bottom saw blade design for the 120MM.
The number of teeth
   The number of teeth, in general, the more the number of teeth in the unit time cutting the edge of the more cutting performance, the better the number of cutting teeth, the number of cutting teeth need to use more carbide, saw the price is high, but too close The amount of chips between the teeth become smaller, easily lead to saw blade fever, while too much sawtooth, when the feed with the improper, then the amount of each tooth cut very little, will exacerbate the edge of the workpiece and the friction, affecting the blade life The Usually tooth spacing at 15-25mm, should be based on sawing the material to choose a reasonable number of teeth.
The choice of thickness
   The thickness of the saw blade Theoretically we hope that the blade is thinner the better, the saw is actually a consumption. The technology of the alloy saw blade matrix and the process of making the saw blade determine the thickness of the saw blade, the thickness is too thin, the blade is easy to shake when working, affecting the cutting effect. The thickness of the saw blade should be selected from the stability of the saw blade and the sawing material. Some special requirements of the thickness of the material is also specific, should be used according to equipment requirements, such as slotted saw blade, scribe saw blade and so on.

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