High-strength nuts usually need to work in harsh environments. In order to make high-strength nuts work longer, it is necessary to give high-strength nuts a layer of protection. There are several ways of protection, usually done in terms of blackening. Today let's talk about the process of high-strength nut blackening processing. In fact, the blackening process is a blackening process at room temperature, which can be divided into the following processes. First of all, the surface layer of the high-strength nut is rusted and washed away. Afterwards, start the degreasing process, and the high-strength nut product workpiece must be thoroughly infiltrated into the degreasing saturated solution; the pH value of the degreasing solution is between 12 and 14, and the immersion time for degreasing is generally 10 to 30 minutes. During the degreasing process, it must be shaken every three to five minutes, and then repeated several times to enter the next step. Here I want to make it clear that if the concentration of the liquid is lower than the pH value of 12, it needs to be supplemented with degreasing powder. The next step is to realize a simple water cleaning process. After cleaning the surface layer of chemical raw materials, pickling must be carried out gradually. Pickling must be pickling saturated solution, the pH value is between 2 and 4. It takes five to ten minutes to carry out the pickling process. Afterwards, clean up the chemicals. After all this processing is done, the high-strength nuts will gradually turn black. In the black pool, a chemical with a pH value of 2.5 to 3.5 is poured to soak the high-strength nuts. It takes ten to twelve minutes to soak the dried fruit and then clean it. Finally, the cylinder can be used for drying, and the blackening process can be completed by oiling before drying. The blackening process of high-strength nuts is relatively simple. However, it must be fully installed in time and strictly follow the required operating procedures to complete the actual operation. Therefore, if you want to do a good job in blackening treatment, you also need professional personnel to guide the operation.