The essence of chemical polishing is similar to that of electrolytic polishing, which is also a surface dissolving process. The selective dissolving effect of chemical reagents on uneven areas on the surface of samples is a method to eliminate wear marks, erosion and leveling.

Advantages of chemical polishing: chemical polishing equipment is simple, can handle the shape of more complex parts.

Disadvantages of chemical polishing: the quality of chemical polishing is inferior to that of electropolishing;The adjustment and regeneration of the solution used in chemical polishing are difficult and limited in application.In the process of chemical polishing, nitric acid gives off a lot of yellow and brown harmful gas, which causes serious environmental pollution.