How to check the quality of woodworking saw blades?
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How to check the quality of woodworking saw blades?
Everyone has this question, how to judge the quality of this cemented carbide woodworking circular saw blade? Today I will share with you three quality inspection methods:
- The surface finish of the substrate is inspected. The woodworking saw blade hole should be inspected with a plug gauge, or the hole should be in full contact with the knife. Use a knife edge ruler to detect the straightness or wave shape and pot shape of the saw blade, and use an end jumper to detect end jump , Whether there are oxides or burrs in the tooth seat, use a hardness tester to test the hardness uniformity, surface rust spots and other indicators.
- Welding check the fluidity of the welding wire, welding strength, welding burn oxide should not exceed the undercut groove, the deflection of the welding tooth alloy, the minimum alloy width between the bottom of the back angle and the base should not be less than 1.2mm, whether there are cracks, or any Test the firmness of alloy welding under pressure.
- Grinding tooth detection on the two sides of the grinding plane A and B. Use the meter to check the alignment (by the surface contact pin). It is suitable for flat contact. The side rear angle and the side rake angle are suitable for contact by the meter point. The table shows how much depends on the thickness of the alloy. Dial gauge inspection can only check the tooth thickness, but most of the saw blade itself must have a parameter difference in the pot or wave type. The best way is always the end jumper is the most accurate inspection standard, and the tooth surface smoothness should also be checked, if it is obvious. To the traces of the grinding wheel, the durability of the knife must be poor, and the two knife faces cannot be seen. Accurate detection still needs to be grounded to be true. Check the back angle, do not allow the back angle or the back edge angle to produce curvature or obvious grinding wheel marks, the two sides of the left and right teeth are the same in diameter, and it is not allowed to be high in the left or high in the right or low in the right. The main cutting edge is facing the human body and it is not allowed to see any white lines, and the hand feels Dawley, and the obvious cutting edge is clear with a video camera. When the rake angle or rake angle is smooth, the grinding wheel is in full contact, and there are no two blades. The domestic rake angle is still grinded by hand or mechanical automatic machine. When the rake angle or the rake angle is sharpened, the grinding wheel is compressed, resulting in an obtuse angle on the main cutting edge. The main reason why the cutter is not durable is that the German hydraulic gear grinding machine has the function of retracting the cutter, so the grinding products are very high.
The above sharing, I hope it will be helpful to everyone!
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