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How to Choose the Right Circular Saw Blade?

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How to Choose the Right Circular Saw Blade?

Issue Time:2021-09-07
the process flow and precautions for sharpening circular saw blades

The circular saw blade is an important cutting part of the metal circular saw. Only by choosing the right circular saw blade, the cutting equipment can obtain a good sawing effect. Then the choice of circular saw blade needs to be considered from the following aspects.

1. Saw blade diameter

The diameter of the saw blade depends on the sawing equipment used and the size of the workpiece being sawed. The diameter of the saw blade is small and the cutting speed is relatively low. Larger sawing equipment requires a larger saw blade diameter, and the sawing efficiency will be higher. The outer diameter of the saw blade needs to be selected according to different circular saw models.

2. Saw blade thickness

The outer diameter of the saw blade and the material to be cut determine the thickness of the saw blade. If the thickness is too thin, the saw blade is prone to rocking and shaking during work, thereby affecting the cutting effect. When choosing the thickness of the saw blade, the stability of the saw blade and the material to be cut should be considered. The thickness required for some special-purpose materials is also specific and should be used according to the requirements of the equipment.

3. Aperture
 
The aperture is a relatively simple parameter, which is mainly selected according to the requirements of the equipment. Regardless of the size of the hole, it can be deformed by a lathe or a wire cutting machine. The lathe can cover a large hole with a car washer, and the wire cutting machine can be extended to meet the requirements of the equipment.
 
4. Sawteeth
 
Generally, the more the number of saw blade teeth, the more cutting edges per unit time, the better the cutting performance. However, the saw teeth are too dense, and the amount of debris between the teeth becomes smaller, which easily causes the saw blade to heat up. If the feed amount is incorrect, the cutting amount of each tooth will be very small, which will increase the friction between the cutting edge and the workpiece and affect the service life of the cutting edge. 

If the saw teeth are too thin, the distance between the teeth will become larger, and the impact between the cutting edge and the workpiece will become larger, which will cause the blade to jump and affect the service life of the blade. Therefore, a reasonable number of teeth should be selected according to the material to be cut.

5. Saw teeth shape
 
The sawtooth shape includes sharp teeth, curved teeth, left and right teeth (alternating chamfers), high and low teeth, and rare combination teeth. The combined tooth is a combination of two tooth shapes, and the grinding is more complicated. The left and right teeth are commonly used.

6. Saw teeth angle

The angle parameters of the sawtooth part are more complicated and professional, and the correct selection of the angle parameters of the sawtooth is the key to determining the cutting quality. The main angle parameters are the front angle and the back angle.
 
(1) The rake angle is the cutting angle of the saw tooth. The rake angle mainly affects the consumption of sawing materials. The larger the rake angle, the better the sharpness of the saw teeth, and the faster the cutting, the more labor-saving the feed. Generally, when the material to be processed is soft, please choose a larger rake angle, otherwise, please choose a smaller rake angle.
 
(2) The relief angle is the angle between the sawtooth and the machined surface, and its function is to prevent the friction between the sawtooth and the machined surface. The larger the clearance angle, the smaller the friction and the smoother the cut. The chamfer should not be too small, it plays a role in maintaining the durability of the teeth and heat dissipation. The angle of the serration is the position of the serration during the cutting process. The angle of the serration affects the cutting performance. 

Combining a series of parameters such as the diameter, thickness, aperture, number of teeth, and angle of the saw blade into the entire saw blade can better select and match its performance. If you want to know more about circular saw blades after reading the above, welcome to contact us.

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