How many processes does the production of a stainless steel vacuum flask go through? （5）

After the vacuum is completely evacuated, the outsole welding is also required on the bottom. In addition to being a stable structure, this bottom is mainly for aesthetics and makes the whole body of the water cup more complete.

After completion, the cup body must be polished on the outside. Actually, the product must be polished after each welding. After polishing is completed, a thorough ultrasonic cleaning should be carried out at this time. It is convenient for the next supply and demand to make qualified products.

After cleaning the water cup, the inner wall of the water cup should be electrolyzed. Through the pickling of the electrolysis process, the stains and debris remaining on the inner wall of the water cup can be completely removed, so that the inner wall of the water cup is clean and smooth, and then the mirror surface treatment or sandblasting treatment process is carried out. So when you buy a cup, you will find that some of the cups are smooth and shiny, and some are frosted and matte.

After the above steps, then a qualified stainless steel water cup body mold is completed. Some people will ask, isn’t this already produced? Why is it still a mold? This step is called a light cup in our factory, because there are still some surface treatment processes such as spraying, printing, and laser engraving that have not been carried out. But so far, the production of a stainless steel water cup has basically been introduced. Friends who like it are welcome to pay attention to us, and also welcome to visit our factory for production cooperation.

The thermos cup produced by Dongguan Zhanyi Commodity Technology Co., Ltd. uses sufficient materials and exquisite workmanship. In terms of material, we insist on using food-grade 304 stainless steel inside and outside, or a combination of 304 stainless steel outside and 316 stainless steel. The heat preservation time can reach 8 hours, and the cold preservation time can reach 12 hours. We insist on using the AQL1.0 inspection standard, which is far higher than the peer standards, and all links adopt a full inspection system to ensure that each product is a high-quality product. Customers from all over the world are welcome to visit our factory for inspection, and welcome to place orders for cooperation.