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Welding seam forming regulation and control method based on space arc-shaped track arc swing coupling welding parameter follow-up

A welding parameter, arc-shaped technology, applied in arc welding equipment, welding equipment, welding accessories, etc., can solve the problems of poor universality, strict process conditions and equipment requirements, etc.

Active Publication Date: 2022-03-01
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the deficiencies in the existing technical solutions or methods, and to better use the swing arc to control the weld formation, in view of the poor universality of the current swing arc welding process, strict process conditions and equipment requirements, etc., a new method was proposed. A welding seam forming control method based on arc swing coupling welding parameters in space arc trajectory, the system block diagram is as follows figure 1 shown

Method used

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  • Welding seam forming regulation and control method based on space arc-shaped track arc swing coupling welding parameter follow-up
  • Welding seam forming regulation and control method based on space arc-shaped track arc swing coupling welding parameter follow-up
  • Welding seam forming regulation and control method based on space arc-shaped track arc swing coupling welding parameter follow-up

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Embodiment 1

[0025] Embodiment 1: The system block diagram of a welding seam forming control method based on the arc swing coupled welding parameters of the present invention is as follows figure 1 As shown, it includes a swing controller (1), a three-axis linear motion mechanism (2), a weld penetration current selector (3), a weld seam control current selector (4), a welding torch (5), a welding power supply ( 6); the swing controller (1) drives the three-axis linear motion mechanism (2) to drive the welding torch (5) to carry out swing welding with a space arc-shaped trajectory, and the three-axis motion equation of the space arc-shaped trajectory arc swing is:

[0026]

[0027]

[0028]

[0029] The above motion equations all take the weld center of the current swing period as the reference coordinate system, where T is the swing period, ω s is the arc motion angular velocity, B is the swing width, L is the swing step, R x is the radius of curvature in the x-axis direction, R ...

Embodiment 2

[0031] Embodiment 2: The swing controller (1) drives the three-axis linear motion mechanism (2) to drive the welding torch (5) to perform swing welding with a space arc-shaped trajectory, and the space arc-shaped trajectory and its arc swing process are in the x-y plane projection as figure 2 As shown, the starting point of arc motion is still at (B / 2,0,f H B / 2) as an example, the schematic diagram of the motion trajectory x(t) and y(t) in the x-axis direction and y-axis direction of the arc swing is as follows image 3 As shown, its arc motion process is the same as that of Embodiment 1, and will not be repeated.

Embodiment 3

[0032] Embodiment 3: The swing controller (1) drives the three-axis linear motion mechanism (2) to drive the welding torch (5) to perform swing welding with a space arc-shaped trajectory, and the projection of the space arc-shaped trajectory on the x-y plane is as follows figure 2 As shown, the schematic diagram of the motion trajectory x(t) and y(t) in the x-axis direction and y-axis direction of the arc swing is as follows image 3 As shown, the curvature adjustment coefficient f in the Z-axis direction H = 0.3 as an example, the Z-axis motion trajectory z(t) of the arc swing and the schematic diagram of its relationship with x(t) are as follows Figure 4 As shown, its arc motion process is the same as that of Embodiments 1 and 2, and will not be repeated.

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Abstract

The invention discloses a welding seam forming regulation and control method based on space arc-shaped track electric arc swing coupling welding parameter follow-up. A system adopted by the method comprises a swing controller (1), a three-axis linear motion mechanism (2), a welding seam penetration current selector (3), a welding seam control type current selector (4), a welding gun (5) and a welding power source (6), and the swing controller (1) is used for driving the three-axis linear motion mechanism (2) to drive the welding gun (5) to conduct swing welding in a spatial arc track. When the welding gun (5) swings to different areas of the center of the welding seam, the welding power source (6) synchronously outputs different welding currents, and welding seam forming regulation and control are completed through the method that space arc-shaped track electric arc swing is coupled with welding parameter follow-up. According to the method, heat input of a welding area and flow field distribution of a molten pool can be effectively regulated and controlled, welding defects such as incomplete fusion, incomplete penetration and undercut of welding are eliminated, and excellent welding seam forming and welding seam quality are obtained.

Description

technical field [0001] The invention relates to the fields of weld formation regulation and weld seam quality control, in particular to a weld formation regulation method based on a spatial arc trajectory coupled with arc swing coupling welding parameters. Background technique [0002] The oscillating arc has the advantages of stirring the welding pool, promoting the gas escape and slag floating in the pool, improving the solidification and crystallization conditions of the weld, regulating the welding seam shape and improving the quality of the weld seam. It has become an important method in the production of modern welding industry. The welding process method is widely used in engineering equipment, rail transit, petrochemical and many other industrial manufacturing fields; in addition, the swinging arc changes the distance between the welding torch and the workpiece, which causes changes in welding parameters such as welding current and welding voltage. The change of weld...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/28B23K9/095B23K9/10B23K9/32
CPCB23K9/28B23K9/10B23K9/095B23K9/32
Inventor 尹力徐远邓洁裴晨旭金福明
Owner XIANGTAN UNIV
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