Anode materials such as magnesium anodes and aluminum anodes are widely used in cathodic protection. In order to make magnesium metal play a better role, before the anode material is used, its quality needs to be checked to check whether the anode surface is contaminated. So what cleaning methods can be used when the anode surface is contaminated?

1. Grinding and rough polishing

Grinding and rough polishing-it is to use abrasive cloth belt, abrasive cloth wheel, rotary milling, etc. to clean it. Among them, emery cloth tape can be used to remove burrs and surface defects of die castings.

2. Dry sand blasting

Dry sand blasting-this method is one of the most commonly used methods for cleaning magnesium alloy castings. Generally, companies will choose silica sand, steel sand, glass balls or cut zinc shots, aluminum shots, etc. Can be used for surface cleaning before pickling. When sand or steel grit shot peening is used, because steel grit embedded in the magnesium surface is prone to surface corrosion, dry sand shot peening needs to be acidified before the magnesium anode surface is treated.

3. Disc or grinding

Disc or grinding-this plot method is mainly used to plot die casting lubricants and other surface contaminants on the surface of magnesium alloy die castings, usually used in combination with detergents, and it also has a certain polishing while cleaning the surface effect.

4. Wire brush

Wire brush-The wire brush can clean the middle of the magnesium alloy plate and remove oxide before arc welding or resistance welding. In order to ensure the cleaning effect of the wire brush, the pressure should be appropriate to improve the quality of the anode.