Cemented Carbide saw blades are the most commonly used cutting tools in wood products processing. The quality of cemented carbide saw blades is closely related to the quality of processed products. Reasonable selection and maintenance of saw blade is of great significance to improve product quality, shorten processing cycle and reduce processing cost. The parameters of cemented carbide saw blade include diameter, aperture, thickness, number of teeth, shape of teeth, angle and so on. When choosing the saw blade, we should choose the saw blade according to the type and thickness of cutting material, the speed and direction of cutting, the speed of feeding and the width of saw path.
The choice of blade diameter depends on the sawing equipment and cutting materials. The cutting material determines the type of sawing equipment to be used, which in turn determines the diameter range of the blade. Then according to the thickness of the cutting material to choose a specific suitable saw blade diameter. In order to ensure the normal operation of the saw blade, it is necessary to maintain the accuracy of the spindle in time during the daily use. The thickness of the saw blade from the theory we hope the thinner the better, saw seam is actually a consumption. The thickness of the saw blade is determined by its material and manufacturing technology. The thickness is too thin, and the saw blade is easy to shake when working, which affects the cutting effect.
When choosing the thickness of saw blade, the stability of saw blade and the material of saw blade should be considered. Some special use of the material requirements of the thickness is also specific, should be used according to demand, such as slotting saw, line saw, etc. . The number of teeth, in general, the more teeth, the more cutting edges in the unit time, the better the cutting effect, but the number of teeth need to use more carbide, relative to the price of the saw blade is also high; the number of teeth, teeth between the teeth slot small, row of cutting error, the proper number of teeth should be selected according to the requirements of sawing material and sawing effect, the sawing blade with less teeth should be selected for solid wood materials, and the sawing blade with more teeth should be selected for high cutting effect. The number of Teeth of a saw blade is usually expressed in English as "Teeth" or "T" . "Teeth" is the plural of "tooth tooth tooth" , for example, a 60-tooth saw blade with "60 teeth" or "60 t" saw blade tooth shape selection commonly used tooth shape are left and right teeth, ladder flat teeth, flat teeth, inverted trapezoid teeth, left and right teeth, left and right teeth, three left and right teeth, three right and three right and one left, etc. .
The use of left and right teeth is the most extensive, cutting speed, grinding is relatively simple. Suitable for cutting and cutting all kinds of soft and hard solid wood profiles and density board, multi-layer board, particleboard, etc. . Because the left and right teeth are sharp, it is easier to wear, so in the process to check the cutting edge and tip state. Trapezoidal teeth is a combination of trapezoidal teeth and teeth, grinding more complex, clean cutting surface and avoid surface explosion, suitable for a variety of single and double veneer, fire board cutting. Aluminum saws are also made with stepped-teeth saws with more teeth to prevent adhesion and grain formation. The inverted ladder teeth are often used to draw a line at the bottom of a double-faced panel, called a vice-saw. The width of the saw path is determined by adjusting the height of the sub-saw, and then the main saw is used to finish the cutting of the board in order to prevent the phenomenon of edge burst. The left and right teeth are used for slotting saw. When cutting, the left teeth and the right teeth are sharp and the bottom of the slotted teeth is flat. In the aspect of the selection of saw-tooth Angle, the angle parameter of saw-tooth part is complex and most professional, and the key to determine the cutting quality is to select the angle parameter of saw-blade correctly. The most important angle parameters are rake angle, back angle and Wedge Angle.
The Rake Angle mainly affects the force consumed by sawdust cutting. The bigger the front angle is, the better the cutting sharpness is, the lighter the cutting is, and the more labor-saving the pushing material is. Generally be processed material material is soft, choose a larger front angle, and vice versa is a smaller front angle of the saw blade such as metal class saw. The back angle is the angle between the processed surface, its role is to prevent the teeth and the processed surface friction, the larger the back angle friction smaller, the more smooth the processed products. The Rear Angle of cemented carbide saw blades is usually 15 °C.
Metal Saws consider the damage to the teeth when cutting, so the angle is small, usually in 10 ° ~ 13 ° . Wedge Angles are derived from the anterior and posterior angles. But the Wedge Angle can not be too small, it plays a role in keeping according to the tooth strength, heat dissipation, durability. The sum of the Front Angle, Back Angle and Wedge Angle is 90 °C. Conclusion in order to improve the production efficiency and product quality, it is necessary to choose suitable saw blade or not enough daily maintenance and maintenance. The alloy saw blade as a whole belongs to consumables, and the most important problem for customers is to achieve the highest effect in a limited time.