1. Introduction to manufacturing process
In the manufacturing process of high-strength bolts and nuts, the actual requirements for pickling are particularly strict. In order to remove the oxide film on the metal material, and to remove the oxide film, a phosphate film must be formed on the surface of the metal. China Fasteners manufacturers remind Don’t underestimate this film. The role of this film in the later spraying or molding process is also relevant and important.
To control the concentration and temperature in the pool, under this premise, pour the pan into the pool that we have prepared. This di step is to remove the oxide film on the metal surface. Change the pool, the step here is called clean water, the main function is to remove corrosive substances on the surface. Oxalic acid is to increase the activity of metals and lay the foundation for the next moral coating.
2. The role of pickling in manufacturing
As a key step of the pickling treatment, the phosphate should contact the surface of the metal material to form a film. Remove leftovers. Such steps seem simple, but we must grasp the time well during operation. Such mastery requires the operator to have a good grasp of the time, and it is also conducive to the realization of the method to prevent the corrosion of the Full Threaded Stud, otherwise it will be acidic. Washing is just a cutscene, which has no practical meaning, and affects the actual operation later. For manufacturers of high-strength bolts and nuts, pickling is a transitional period in the production of stainless steel screws. Such a step must be implemented well to complete our following processes to ensure that stainless steel screws meet certain quality requirements.