A method for spot welding quality control of galvanized steel sheets for automobiles

Abstract

The invention relates to a method for spot welding quality control of galvanized steel sheets for automobiles, which comprises the following steps: step S1: analyzing the influence of welding selection process parameters on welding quality, and optimizing the process parameters; step S2: analyzing the impact of welding selection materials on welding quality Influence of welding quality; step S3: analyze the influence of electrode cap selection for welding on welding quality; step S4: adopt current gain compensation method to optimize welding quality. The present invention studies the influence of welding process parameters, welding base material and spot welding electrodes on welding quality, and adopts appropriate methods to control spot welding quality, so as to reduce welding spatter and burrs, prevent solder joints from overheating and electrode adhesion, and achieve Improve the strength of welded joints and surface quality, thereby improving the quality of the vehicle; at the same time, it is also improving the production environment in the workshop, reducing the labor intensity of workers, shortening the production cycle, reducing production costs, saving resources, and improving the market competitiveness of enterprises.

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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