The processing technology of pump impeller mainly includes casting, forging and machining, and different processing technologies will produce different degrees of surface impurities and burrs. In order to ensure the quality and performance of pump impeller, effective cleaning methods must be taken to remove impurities on the surface.

Common cleaning methods include:

Pickling method: the impurities on the impeller surface can be well removed by dissolving the oxides and dirt on the surface with acidic cleaning agent. However, it is necessary to pay attention to safety when using acidic cleaning agents, because acidic substances are corrosive.

Alkaline cleaning method: the impeller surface can be effectively cleaned by dissolving impurities on the surface with alkaline cleaning agent. However, alkaline cleaning agents are also corrosive, so pay attention to safety.

Water spray method: high-pressure water spray is used to clean the impeller surface, which can wash away the impurities on the surface. This method is safer, but the cleaning effect may not be as good as pickling and alkali washing.

Heat treatment method: heat the impeller surface to make the surface impurities swell and peel off, and then clean the surface with cleaning agent. This method is thorough, but it needs professional equipment and technical support.

It should be noted that when cleaning the impeller surface, hard objects such as metal brushes should be avoided to scratch the impeller surface, so as not to scratch the impeller surface and affect its service life and performance.