It is inevitable that the bimetal band saw blade will cause some trouble during operation. Among them, the tooth collapse is a more common failure of the bimetal band saw blade. There are many reasons for the occurrence of tooth failure, involving the sawing machine, improper handling, and so on. The following analysis of the cause of the failure of the bimetal band saw blade during the use of several reasons.

　　First of all, the tooth collapse is due to the reason of the sawing machine.

　　Firstly, the sawing machine is affected by the vibration of the surrounding equipment. The loosening of the screws fixing the sawing machine, etc., affects the shaking of the saw frame. Therefore, the saw blade is easily shaken off during the cutting process.

　　Secondly, the cylinder on the saw bed has entered the air, the cylinder has been damaged or the control valve has been out of control, and the like will cause the speed of the saw frame to decline at a non-uniform speed, thereby causing the tooth to collapse.

　　Thirdly, the vertical alignment between the guides and the steering wheel and the guide wheel is inaccurate. As a result, the movement of the sawing machine also deviates. The bi-metal band saw blade will suddenly move from left to right in the cutting process. The cutting is unstable. The serrations are easily broken and eventually collapse.

　　Fourthly, the motor belt is damaged and deteriorated during long-term operation. It may cause discontinuity when the bi-metal band saw blade is running. As a result, the operation of the band saw blade and the sawing machine may also intermittently stop. . Fifthly, some parts of the sawing machine may be damaged due to the long use time of the sawing machine, which may lead to problems in the operation of the sawing machine. This may also affect the problem of tooth collapse of the bimetal band saw blade.

　　Secondly, when the choice is made, the misalignment of the bimetal band saw blade can easily cause the failure of the tooth collapse. If the user arbitrarily cuts regardless of whether the material to be cut is solid or hollow, and regardless of what kind of pitch the cut material is suitable for, then the tooth collapse is positive. Even a large sawtooth cuts a small area of material, there will be tooth collapse.

　　Finally, improper operation is an important cause of bi-metal band saw blade collapse. The operator did not properly perform the feed operation at the beginning, causing the saw blade to be unstable during operation, and the drop speed was quick, resulting in the blade tip of the band saw blade being subjected to too much pressure at a time, and it is prone to tooth collapse. Or the operator is sloppy, and either the clamps are too tight or too loose between the guide blocks, so that the blade is easily oscillated during cutting. Or the cutting material is mounted in an incorrect manner, causing the blade to produce friction when cutting the material. These will lead to the occurrence of tooth collapse.