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Laser reinforcing technological method for circular saw bit

A circular saw blade and laser strengthening technology, which is applied to manufacturing tools, heat treatment equipment, furnaces, etc., can solve the problems of easy cracking, large deformation of heating furnace quenched saw blades, and poor wear resistance of high frequency quenched saw blades. Not easy to crack, long service life, good wear resistance

Inactive Publication Date: 2006-10-25
GUANGTONG TECH GUANGZHOU CITY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • Laser reinforcing technological method for circular saw bit
  • Laser reinforcing technological method for circular saw bit
  • Laser reinforcing technological method for circular saw bit

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Experimental program
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Embodiment

[0020] To strengthen the circular saw blade with a thickness of 16mm and a diameter of Φ2100mm for cutting H-shaped steel, the steps are as follows:

[0021] (1) Deformation detection of saw blades entering the site;

[0022] (2) Press figure 1 As shown, install the saw blade to be processed on the spindle of the machine tool, and adjust the swing to less than 1mm;

[0023] (3) Adopt broadband integral lens, H=20mm;

[0024] (4) Apply black light-absorbing paint to the teeth, and then wipe off the tooth tip paint;

[0025] (5) The light spot irradiates the circular saw blade radially, and the rotation direction of the main shaft is counterclockwise (such as figure 1 Arrow), where the lens angle α=45. , power N=2900W, outer circle speed V=800mm / min;

[0026] (7) Process quality monitoring, observe whether the beam irradiated surface is slightly melted, whether the non-irradiated surface (front) is gray-white quenching trace, and adjust the power and speed in time.

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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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/09C21D9/24
Inventor 马春印冯荣元
Owner GUANGTONG TECH GUANGZHOU CITY
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