The blade is timber mill teeth, the material of the blade is good or bad directly determines the timber mill yield. According to the classification of hard alloy, and different applications in a variety of, even if the damage effects were maintained at a minimum, they can only be in the toughness, flank wear and crater wear, as well as the comparison of sensitivity between plastic deformation etc.. This limitation means that wood crusher blade only in the composition and microstructure of alloys of the same, all kinds of material can be compared.
With intermittent cutting or transform the depth of cut timber mill processing operations, such as milling or copying turning often because of fatigue cracks and damaged wood crushing blade. Through the establishment of special test conditions to reduce the impact toughness and wear loss, can compare the utility of hard alloy material completely different fatigue crack.
Sawdust crusher blade has two different types of fatigue crack, crack that is perpendicular to the cutting edge and cutting edge crack is parallel to the. These two types of crack can be produced in the alloy knife, may also appear in the alloy blade base on the tool flank. The first kind of crack is mainly caused by thermal fatigue effect, its formation is earlier than changes related to the cutting forces, which is related to mechanical fatigue crack of another class. Then you need to join the cooling fluid in the grinding, in order to reduce the blade when cutting heat, adverse effects to the alloy blade production.