Laser reinforcing technological method for circular saw bit

Abstract

The invention discloses the laser intensifying method using for the disc saw piece, it includes the steps: (1) the disc saw piece is fixed on the tool principal axis; (2) the tooth part is executed the spreading pretreatment using the absorbing light; (3) the tooth part is executed the laser intensifying process, the tool principal axis and the irradiating direction of the light beam is vertical, the light beam irradiates the disc saw piece radial. The invention can quench the all working part of the tooth, so the root of the tooth is protected, the laser intensifying has the inhere advantage of intensifying, so the saw piece has many merits such as the long using life, the better ability of standing up the tear, the fixedness and the without the crack.

Description

technical field [0001] The invention relates to the field of laser strengthening and heat treatment of metal materials, in particular to a laser quenching process applied to circular saw blades. Background technique [0002] At present, the circular saw blade with a diameter of Φ1500-2200mm has been widely used in iron and steel enterprises to cut steel online at high speed. In order to withstand the wear and tear during cutting, the teeth need to be quenched and strengthened. At present, the strengthening methods of similar circular saw blades include high-frequency quenching and furnace quenching. [0003] The high-frequency quenching saw blades have poor wear resistance, and the heating furnace quenching saw blades have large deformation, especially they are inevitably quenched to the root of the tooth, resulting in stress concentration, and cracks are prone to occur during use, which is extremely unfavorable to the safety of high-speed cutting saw blades . [0004] In ...

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Problems solved by technology

[0003] The high-frequency quenching saw blades have poor wear resistance, and the furnace quenching saw blades have large deformation, especially they are inevitably quenched to the root of the tooth, resulting in stress concentration, and cracks are prone to occur during use, which is extremely unfavorable to the safety of high-speed cutting saw blades

[0004] In the past, lasers were also used to quench and strengthen circular saw blades. However, when the laser beam is irradiated from the side, that is, the main axis of the machine tool is parallel to the beam irradiation direction, only the two sides of the teeth of the saw blade can be quenched, and the middle part of the teeth cannot be quenched. , the working part of the entire tooth is not quenched, so the strength of the tooth is not uniform, and it is prone to chipping

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