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Method for reducing grinding frequency of aluminum alloy spot welding electrode

A technology for spot welding electrodes and aluminum alloys, applied in electrode characteristics, electrode maintenance, etc., can solve the problems of high grinding frequency, low production cycle, and high electrode consumption, so as to reduce the grinding frequency, ensure production cycle, and ensure welding quality. Effect

Inactive Publication Date: 2020-02-21
ANHUI JEE AUTOMATION EQUIP CO LTD
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Problems solved by technology

[0008] The purpose of the present invention is to provide a method for reducing the grinding frequency of aluminum alloy spot welding, so as to solve the problems of fast electrode loss and high grinding frequency in aluminum alloy welding, resulting in low production cycle and high electrode consumption.

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  • Method for reducing grinding frequency of aluminum alloy spot welding electrode
  • Method for reducing grinding frequency of aluminum alloy spot welding electrode
  • Method for reducing grinding frequency of aluminum alloy spot welding electrode

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Embodiment Construction

[0020] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0021] The invention aims to solve the problems of rapid electrode wear and high grinding frequency in aluminum alloy welding, resulting in low production beat and high electrode consumption. This method is applicable to the aluminum alloy resistance spot welding process, and the principle and improvement means of this method will be discussed below.

[0022] The research shows that the serious burning of the aluminum alloy spot welding electrode is mainly due to the aluminum-copper alloy reaction between the copper electrode and the aluminum alloy workpiece surface due to electric heating during the entire welding cycle, resulting in adhesion, and the electrode end surface becomes uneven, even...

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Abstract

The invention discloses a method for reducing the grinding frequency of an aluminum alloy spot welding electrode. The method comprises the steps of electrode cap selection, specifically, a frustum-shaped chromium-zirconium-copper electrode cap with the front end surface being in circular arc transition is selected; and welding parameter selection, specifically, a multi-section welding mode is selected, the number of the selected sections is 4-6, the interval cooling time of multi-section welding is 3-5 ms, and the welding time of each section is 20-30 ms. Starting from the improvement angle ofa welding process, the factors of electrode burning losses are restrained or inhibited, and the grinding frequency caused by the electrode burning losses is reduced; and through the method, the grinding frequency of aluminum alloy spot welding can be greatly reduced, complex process steps or additional equipment are / is not needed, and meanwhile, the production beat and the welding quality are guaranteed.

Description

technical field [0001] The invention relates to an aluminum alloy resistance spot welding process, in particular to a method for reducing the grinding frequency of an aluminum alloy spot welding electrode. Background technique [0002] Aluminum alloy resistance spot welding (hereinafter referred to as aluminum spot welding) is a commonly used joining process in the manufacture of automobile body-in-white. Compared with cold joining processes such as riveting, it has a series of advantages such as simple system, low cost, high cycle time, and low failure rate. However, the aluminum alloy has strong activity, and it is easy to form a low melting point eutectic with the copper alloy in the electrode material during welding, and adheres to the surface of the electrode. During continuous spot welding, the surface of the electrode will gradually become uneven, and the diameter and shape of the end face of the electrode will also change, which directly affects the application of cu...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K11/30
CPCB23K11/30B23K11/3063
Inventor 刘蕾王静汤东华汤伟
Owner ANHUI JEE AUTOMATION EQUIP CO LTD
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