Spot welding machine manufacturers : introduction to the benefits and methods of cleaning weldments before welding

　　After cleaning, the contact resistance value of the weldment surface increases with the storage time. Because the surface of the cleaned weldment is oxidized under the same storage conditions, when the storage time is not long, the newly formed oxide film on the surface is thin. The uniformity has little effect on the quality of welding. If the storage time is too long, the oxide film will thicken and welding cannot be performed. Therefore, for oxide materials, the time from surface cleaning to the end of welding must be strictly controlled. The length of storage time depends on the type of material, surface cleaning method, storage environment and quality requirements.

　　There are many ways to clean the surface, which can be roughly divided into the following two;

　　1. Mechanical methods, such as sandblasting, polishing, polishing, etc.

　　2. Chemical methods: such as pickling, alkaline cleaning, etc. The specific cleaning method to be used should be selected according to factors such as weldment materials, supply status, structure shape and size, production conditions and welding head quality requirements.

　　Shenzhen Site Technology Co., Ltd. is a high-tech production enterprise integrating R&D, production and sales of automated welding equipment and power battery PACK line equipment. The professional technical engineering team provides customers with timely and perfect pre-sales and after-sales services.