In order to extend the service life, so metal circular sawing machine with the new blade (new or unused blade after each blade grinding) has a more fully running-in process, the cutting operation begins within 10 minutes, reduce The feed rate is very necessary. 2, the cut and feed rate. Cutting speed depends on the cross-section of the workpiece to be cut and toughness. This is difficult for the stainless steel cutting material of high toughness, the slower the speed is very beneficial to increase the service life of the blade, and for some classes of iron, a relatively low toughness of the material, the blade rotation speed can be increased accordingly. 3, timely and correct grinding blades. Pay attention to the work of the blade, the occurrence of abnormalities such as vibration, voice sound, machined surface material moving situation, you must promptly stop adjustment, and promptly grinding, keep the peak profits. Timely and properly re-grind saw blade can maximize the performance of the blade. 4, the addition of a suitable coolant. Because the heat generated by the cutting time, it may lead to blade deformation, no coolant, not only affect the blade life and cutting effect is not ideal. So please join coolant. 5, so that you can observe sawdust roughly determine the effectiveness of the current state of the blade.