Spot welding quality control method for galvanized steel plate for automobile

Abstract

The invention relates to a spot welding quality control method for a galvanized steel plate for an automobile. The spot welding quality control method comprises the following steps that S1, the influence of welding selection process parameters on the welding quality is analyzed, and the process parameters are optimized; S2, the influence of welding selection materials on the welding quality is analyzed; S3, the influence of a welding selection electrode cap on the welding quality is analyzed; and S4, the welding quality is optimized by adopting a current gain compensation method. According tothe spot welding quality control method, the influence of the welding process parameters, welding base materials, spot welding electrodes and the like on the welding quality is studied, and the spot welding quality is controlled by an appropriate method, so that the welding spattering and burrs are reduced, the welding spots are prevented from being over-burnt, the electrodes are prevented from being adhered, and the purposes of improving the strength and the appearance surface quality of the welding spot welding spots and improving the quality of the whole vehicle are achieved; and meanwhile,the production environment of a workshop is also improved, the labor intensity of workers is relieved, the production period is shortened, the production cost is reduced, resources are saved, and themarket competitiveness of enterprises is improved.

Description

technical field [0001] The invention relates to the field of auto parts processing, in particular to a quality control method for spot welding of galvanized steel sheets for automobiles. Background technique [0002] With the substantial improvement of people's living standards, the demand for rigidity of automobiles is also increasing. In 2010, China's automobile sales exceeded 18.5 million, a year-on-year increase of more than 36%. After surpassing the United States in 2009 with 13.64 million sales and a year-on-year increase of more than 46%, China became the world's largest automobile producer and The largest new car sales market. People's awareness of resource conservation, environmental protection and driving safety is constantly increasing, and the requirements for automobile performance are becoming more and more stringent. Among them, strengthening the corrosion resistance of automobiles is a key research area. In recent years, in order to improve the corrosion re...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for spot welding quality control of galvanized steel sheets for automobiles, to solve the problem that when spot welding galvanized steel sheets, the wear rate of the electrodes will be accelerated, and the failure process of the electrodes will be accelerated. The problem that the total amount of steel plates is greatly reduced

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