How to choose the number of teeth of saw blade

Generally speaking, the more teeth there are, the more cutting edges there are in unit time, the better the cutting performance. However, if the number of cutting teeth needs more cemented carbide, the price of the saw blade will be higher, but the teeth are too dense, and the amount of chip between teeth will be smaller, which is easy to cause the heat of the saw blade. In addition, if the external serrations are too many, the cutting amount of each tooth is small, which will aggravate the cutting edge and The friction of the workpiece affects the service life of the blade. Generally, the tooth spacing is 15-25mm, and the reasonable number of teeth shall be selected according to the sawing material.