1. Clean with alkaline solution
在机箱机柜制作成型后并没有完全的完工，需要对它进行碱洗，肯定很多人会有疑问，为什么要对它进行碱洗？机箱机柜表面沾附很多油污，要售出高质量的机箱机柜，我们就必须对其进行清洁工作，我们其中一道工序就是对它进行清洗。我前面所提到的碱洗液是采用Na2C03 Na3P04 Na2Si03和添加剂组成。用碱洗液洗完还需用清水进行擦洗，目的是擦除碱洗液残留物。
The cabinet is not completely finished after it is made. It needs to be washed with alkali. Many people will have doubts about why it needs to be washed with alkali? There are a lot of oil stains on the surface of chassis and cabinet. To sell high-quality chassis and cabinet, we must clean them. One of our processes is to clean them. The alkali lotion I mentioned earlier is composed of na2c03, na3p04, na2si03 and additives. After washing with alkaline detergent, clean water is needed to wipe the residue of alkaline detergent.
2. Use to remove oxide film
The naturally formed oxide film on the surface of the cabinet shell is generally non-uniform and discontinuous. When painting the surface of the cabinet, it must be thoroughly removed one step in advance. For die castings, nitric acid can be used to treat the oxide film on the surface. After removing the oxide film, we need water for further treatment.
3. Chemical conversion
After the previous steps, we need to carry out chemical conversion treatment on it. We need to form a dense and uniform continuous film on its surface. The process treatment in this step is equivalent to phosphating treatment, but they use different solutions. The conversion film of the electronic case of the case machine is based on chromic acid / hydrochloric acid, phosphoric acid / hydrochloric acid and hydrofluoric acid. The quality of the conversion film is usually 215g / m2. After the conversion film is formed, it must be cleaned with clean water and then dried with hot air to enhance the hardness of the film.
In a word, a good cabinet product must be beautiful, and the appearance also gives the impression of customers, which is very important. Just imagine, if you are a customer to buy a chassis and find its surface dirty, you will not have a good impression. Therefore, details are an essential part of achieving your career!