How to perform acid washing on stainless steel castings? Follow now!

Hebei Fengquan Machinery Manufacturing Co., Ltd. is located in Botou City, Hebei Province, with convenient transportation and good location. It is a company engaged in casting, machining, and machine tool manufacturing. Lai Feng Quan Machinery has always been dedicated to the manufacturing of heavy industry equipment and is committed to becoming a large-scale cast iron manufacturer; One of the solution providers for measuring tools, granite measuring tools, large machine tools, and mechanical manufacturing solutions.

Stainless steel casting; It has the function of non rusting and high density, which can be seen from its production process. Only pure stainless steel liquid needs to be cast, and after a series of processing techniques, castings can be produced and manufactured

Cheng Mao Hardware will now provide a detailed introduction on how to carry out acid washing in stainless steel casting.

Acid pickling solution is mainly used for the overall production of small and medium-sized unprocessed parts, and can be applied by infiltration or brushing methods. When the temperature of the aqueous solution is between 21-60 ℃, check it up and down every hour until the stainless steel casting shows a balanced milky white acid corrosion gloss.

Passivation agents are mainly used for small and medium-sized glassware or components, and can be applied by infiltration or brushing. When the temperature of the aqueous solution is between 48-60 ℃, they should be inspected every 8 minutes. When the temperature of the aqueous solution is between 21-47 ℃, they should be inspected every two minutes until the stainless steel casting surface is transformed into a balanced passivation treatment film.

The pickling and passivation treatment of spare parts requires cleaning the surface with clean water, and testing the cleaning surface with acidic or alkaline litmus paper to maintain a pH value between 6.5-7.5. Afterwards, wipe or dry with reduced vapor.

The surface of stainless steel casting will leave various oil stains, rust, oxide scales, welding spots and other stains, and after acid washing and passivation treatment, the surface will become more and more balanced and silver, which can also improve the corrosion resistance of stainless steel casting.

The above is the relevant information that the editor has compiled for everyone. Please follow the center for more information;.