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Welding device and method for preventing welding angular distortion

A welding device and welding angle technology, applied in welding equipment, high-frequency current welding equipment, metal processing equipment, etc., can solve the problems affecting the installation accuracy and bearing capacity of parts, increase design costs, reduce work efficiency, etc., and achieve a simple structure. , The effect of eliminating residual deformation and high work efficiency

Active Publication Date: 2016-12-14
GUANGDONG UNIV OF TECH
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] For melting welding, the residual deformation after fluxing is always unavoidable. This residual deformation seriously affects the installation accuracy and bearing capacity of the parts. Tolerance and performance changes caused by welding deformation must be considered in every product design. increased design cost
At present, welding deformation can be eliminated by post-weld correction methods, such as the commonly used mechanical correction method and flame correction method, but because welding deformation has various deformation conditions, the corresponding correction tooling is also varied, and different deformation needs Developing different orthodontic equipment not only causes a waste of resources, but also greatly reduces work efficiency

Method used

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  • Welding device and method for preventing welding angular distortion

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Embodiment 1

[0044] The deformation in the welding process is mainly caused by the residual stress caused by the non-uniform cooling of the heat-affected zones on both sides of the weldment 16 after the welding is completed. For x-shaped grooves, symmetrical welding can reduce welding deformation, while for asymmetrical grooves such as v-shaped T-shaped grooves, it is impossible to adopt symmetrical welding, which leads to large residual deformation after welding. Therefore, the present invention provides a kind of welding device, by adopting the method of reducing the deformation of the welding angle by induction heating on the back side of the welding part, applying a heat source close to the welding input on the back side of the weldment 16, by making the two sides of the weldment 16 The side undergoes a similar welding thermal cycle process, thereby reducing the residual deformation caused by welding.

[0045] Specifically, the welding device includes a welding platform 1 , a guide rai...

Embodiment 2

[0048] The form of weldment joint with welding is T-shaped joint, the size of the bottom plate is 1000mmX500mmX8mm, and the size of the longitudinal plate is 500Xmm500mmX5mm. In order to match the welding angle, set the heating head to swing 15 degrees through the control box (such as figure 1 ), the welding method adopts manual arc welding, the first welding current is 105-120A, the voltage is 20-22V, the welding speed is 75-90mm / min, the line energy is 1.4-2.11KJ / mm, and the induction coil 17 for heating is set as Figure 4 As shown, the current is 5-8A, and the frequency is 20KHz. Welding personnel use the controller to cooperate with the feedback screen to keep the movement of the heating head in sync with the movement of the welding tongs. After the welding is completed, the angular deformation is approximately equal to zero, while the angular deformation of the weldment without heating measures on the back of the weldment is about 2 degrees.

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Abstract

The invention discloses a welding device and method for preventing welding angular distortion. The device mainly comprises a welding platform, a guide rail, a heating device, a control box, a feedback panel, a welding mask, a controller and soldering pliers. The control box is electrically connected with the heating device, the feedback panel, the controller and the soldering pliers. The heating device is installed on the guide rail. The guide rail is located below a welding post. The feedback panel is installed on the welding mask. The controller is arranged in a belt shape and installed on the soldering pliers. The method mainly includes the following steps that welding parts are fixed to the welding platform; the controller on the soldering pliers is adjusted, the heating device arrives at the position below a welding point, and the feedback panel displays positional information of the heating device in real time; a first microcontroller and a second microcontroller drive a first magnetic stripe and a second magnetic stripe to generate corresponding magnetic fields, and thus the end face of a heating tip can heat the back face of the welding point; and the welding point is welded. The welding device is simple in structure, convenient to use, high in working efficiency and low in production cost.

Description

technical field [0001] The invention relates to the field of welding technology and welding equipment, in particular to a welding device and method for reducing or eliminating angular deformation caused by welding by heating the back of a weldment. Background technique [0002] For melting welding, the residual deformation after fluxing is always unavoidable. This residual deformation seriously affects the installation accuracy and bearing capacity of the parts. Tolerance and performance changes caused by welding deformation must be considered in every product design. Increased design cost. At present, welding deformation can be eliminated by post-weld correction methods, such as the commonly used mechanical correction method and flame correction method, but because welding deformation has various deformation conditions, the corresponding correction tooling is also varied, and different deformation needs The development of different orthodontic equipment not only causes a w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K13/01B23K13/08
CPCB23K13/01B23K13/08
Inventor 张永康卢轶黄志刚邹大鹏
Owner GUANGDONG UNIV OF TECH
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