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Laser processing method for steel sieve tube slit

A technology of slitting and sieve tube, applied in manufacturing tools, laser welding equipment, metal processing equipment, etc., can solve problems such as difficult to achieve results, and achieve the effect of overcoming irregular slit shape, improving cutting efficiency, and ensuring cutting quality.

Inactive Publication Date: 2010-11-24
北京宏诚拓业科技发展有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the particularity of laser cutting and screen slit, if the two are not organically combined, it will be difficult to achieve the desired effect

Method used

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  • Laser processing method for steel sieve tube slit
  • Laser processing method for steel sieve tube slit
  • Laser processing method for steel sieve tube slit

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Embodiment Construction

[0026] The present invention will be described in detail below in conjunction with the embodiments.

[0027] The cross-sectional shape of the steel screen slot includes Figure 2a the rectangle shown, Figure 2b the trapezoid shown, and Figure 2c combination shown.

[0028] When the cross-sectional shape of the slit of the screen pipe is rectangular, the cutting process of the slit can be completed only by moving the laser head.

[0029] Such as Figure 3a As shown, first move the laser head above the screen, make the optical axis of the laser head perpendicular to the axis of the screen, and move the laser head to the left (or right) for a distance of B / 2-D / 2 according to the slot width B , where B is the width of the slit, D is the diameter of the laser focus spot, and then the laser is turned on for cutting. Of course, as long as the optical axis of the laser head is perpendicular to the axis of the screen pipe, the initial position of the laser head can also be on th...

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Abstract

The invention discloses a laser processing method for a steel sieve tube slit. One end point of one long edge of the slit is used an initial point. The method comprises the following steps of: perforating a hole at the initial point of a cut by using pulse laser, and then finishing the cutting of the whole slit from the initial point by using continuous laser. During cutting, oxygen is used as an auxiliary gas, the metal at a cutting point is further heated by using reaction heat released by the reaction of the oxygen and the molten iron at the cutting point, meanwhile the molten iron is changed into ferroferric oxide with good liquidity by using chemical reaction, and the ferroferric oxide is blown away the cutting point by using airflow so as to ensure continuous cutting. The processing method solves the problems of irregular slit shape, slag adhesion at the cut and oblique blowing trace in the conventional laser cut sieve tube slit.

Description

technical field [0001] The invention relates to a method for processing slots of steel screen pipes by laser. Background technique [0002] As a modern processing method, laser cutting is favored by people for its high processing efficiency, good cutting quality and flexible operation, and it is naturally considered by people to process the slots on the screen. However, due to the particularity of laser cutting and screen slit, if the two are not organically combined, it will be difficult to achieve the desired effect. Contents of the invention [0003] The object of the present invention is to provide a laser processing method for the slits of steel screen pipes, which can effectively realize efficient and high-quality processing of laser slits on screen pipes. [0004] A laser processing method for steel screen pipe slits in the present invention is specifically as follows: taking one of the endpoints of one of the long sides of the slit as the starting point, first usi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/36B23K26/02B23K26/42B23K26/14B23K26/38
Inventor 杨贺来
Owner 北京宏诚拓业科技发展有限公司
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