The domestic hydraulic valve block body is made of sand as molding material, so the existence of sand sticking is inevitable in the casting. Sand sticking is harmful to the hydraulic system. Shot peening is widely used for sand cleaning.

Cleaning of hydraulic valve parts: the cleaning of hydraulic valve parts seems simple, but in fact it is a key step in the processing of hydraulic valve block, and its cleaning quality restricts the reliability and stability of hydraulic valve block. Cleaning quality has a great relationship with cleaning method, preparation of cleaning solution, cleaning equipment and personnel's sense of responsibility.

The dimensions of hydraulic components installed on the hydraulic valve block shall not interfere with each other. The geometric dimension of the valve block mainly considers the external dimension of the components installed on the valve block, so that there is enough assembly space between the components.

Clean the valve block. Remove all kinds of particle pollutants, corrosives, grease, etc. on the surface of valve block. In order to ensure that the valve block will not rust prematurely in use, it is necessary to carry out antirust treatment.