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Filtering net welding technology

A welding process and filter screen technology, which is applied in the field of filter screen welding process, can solve problems such as unstable solder joint quality, poor filter screen surface flatness, and difficult control of mesh gap precision errors, etc., to achieve a wide processing range and improve surface quality. The effect of improving flatness and improving the accuracy of the mesh gap

Inactive Publication Date: 2017-12-22
杨沁玥
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, when the filter screen is welded, it is fixed on the support grid at 90 degrees to the axis of the wire by contact resistance welding to obtain a filter screen. The disadvantages are: the quality of the solder joints is unstable, and the accuracy of the gap between the wires is incorrect. Difficult to control, poor flatness of the filter screen surface

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A filter screen welding process, comprising the following steps:

[0020] A. Laser cutting is used on the support rod to form a plurality of cogs at equal intervals that match the bell mouth wires; B. Special tooling fixtures are used to fix the bell mouth wires in the tooth slots;

[0021] C. The laser beam is applied to the intersection of the support rod and the horn wire to form a laser photoinduced plasma and a welding pool;

[0022] D. Apply the pulsed strong magnetic field to the welding pool and its surrounding area, and continuously feed the protective gas during the welding process to complete the welding.

[0023] In this embodiment, the cogging method in step A includes the following steps:

[0024] A. Fix the side of the support rod, adjust the laser head to be perpendicular to the side of the support rod; move the cutting head, and position the cutting focus at the slotting position, and keep a constant distance between the cutting head and the surface of...

Embodiment 2

[0030] A filter screen welding process, comprising the following steps:

[0031] A. Laser cutting is used on the support rod to form a plurality of cogs at equal intervals that match the bell mouth wires; B. Special tooling fixtures are used to fix the bell mouth wires in the tooth slots;

[0032] C. The laser beam is applied to the intersection of the support rod and the horn wire to form a laser photoinduced plasma and a welding pool;

[0033] D. Apply the pulsed strong magnetic field to the welding pool and its surrounding area, and continuously feed the protective gas during the welding process to complete the welding.

[0034] In this embodiment, the cogging method in step A includes the following steps:

[0035] A. Fix the side of the support rod, adjust the laser head to be perpendicular to the side of the support rod; move the cutting head, and position the cutting focus at the slotting position, and keep a constant distance between the cutting head and the surface of...

Embodiment 3

[0041] A filter screen welding process, comprising the following steps:

[0042] A. Laser cutting is used on the support rod to form a plurality of cogs at equal intervals that match the bell mouth wires; B. Special tooling fixtures are used to fix the bell mouth wires in the tooth slots;

[0043] C. The laser beam is applied to the intersection of the support rod and the horn wire to form a laser photoinduced plasma and a welding pool;

[0044] D. Apply the pulsed strong magnetic field to the welding pool and its surrounding area, and continuously feed the protective gas during the welding process to complete the welding.

[0045] In this embodiment, the cogging method in step A includes the following steps:

[0046] A. Fix the side of the support rod, adjust the laser head to be perpendicular to the side of the support rod; move the cutting head, and position the cutting focus at the slotting position, and keep a constant distance between the cutting head and the surface of...

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PUM

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Abstract

The invention discloses a filtering net welding technology. The filtering net welding technology includes the following steps that A, laser cutting is adopted on a supporting rod so that multiple tooth gears matched with a horn opening wire can be formed, wherein the tooth grooves are arranged at equal intervals; B, a special tool clamp is used for fixing the horn opening wire into the tooth grooves; C; laser beams act on the connecting position of the supporting rod and the horn opening wire so that a laser light-induced plasma and a welding molten pool can be formed; and D, a pulse strong magnetic field is applied to the welding molten pool and surrounding areas of the welding molten pool, and welding is completed. By means of the adopted welding technology, operation is simple, the welding strength is high, the surface flatness of a filtering net can be improved, and the net wire clearance precision can be improved.

Description

technical field [0001] The invention relates to the technical field of filter screen welding, in particular to a filter screen welding process. Background technique [0002] Laser welding is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source. Laser welding is one of the important aspects of the application of laser material processing technology. In the 1970s, it was mainly used for welding thin-walled materials and low-speed welding. The welding process is heat conduction, that is, the laser radiation heats the surface of the workpiece, and the surface heat diffuses to the inside through heat conduction. By controlling the width, energy, peak power and repetition frequency of the laser pulse and other parameters to melt the workpiece and form a specific molten pool. Due to its unique advantages, it has been successfully applied in the precision welding of micro and small parts. [0003] In the prior art, when the filter sc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/12B23K26/21B23K26/70
CPCB23K26/123B23K26/21B23K26/702
Inventor 杨沁玥
Owner 杨沁玥