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2023
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What are the common failure forms of metal cold and hot cutting circular saw blades
Metal cold and hot cutting circular saw blade is the main tool for rapid sawing of tubes, rods and profiles. It is generally used in hot rolling and finishing processes of steel rolling production lines. The matching circular saw machines are divided into the following types according to the movement mode of saw blades: sliding type horizontal push saw machine, swing saw machine, four-link hot saw machine, etc. According to the overall movement of the saw machine is divided into: fixed saw, mobile saw, tracking saw and so on. Different sawing occasions have different working characteristics, but the main failure form of the saw blade is basically the same, but some focus on the crack, some focus on deformation and so on.
The common failure modes of metal cold and hot cutting circular saw blades are as follows: first, cracks, which mainly occur at the bottom of the tooth groove of the serrated teeth, where large and cyclic alternating fatigue stresses are borne, cracks occur due to stress concentration, and sometimes cracks occur at the back of the tooth and the middle of the plate body, especially at the process hole, which may occur when subjected to large loads due to the existence of microscopic crack sources. The second is deformation and buckling. The main forms are disc type, lotus leaf type, no rigidity, etc. Most of them are caused by the lateral impact of small energy and many times. Three is off or broken, mostly because of the emergence of small cracks continue to expand after the production.
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