Plating: Electroplating or electroless plating processes are used to deposit a thin layer of metal (such as chrome, nickel, or zinc) onto the surface of the component, providing enhanced corrosion resistance, wear resistance, and aesthetic appeal.

Coating: Various coating techniques, such as powder coating, thermal spraying, or painting, are employed to apply a protective layer onto the surface of the machinery component. These coatings provide corrosion resistance, chemical resistance, abrasion resistance, and can also serve as a decorative finish.

Passivation: Passivation is a chemical treatment process primarily used for stainless steel components to enhance their corrosion resistance by removing impurities and forming a protective oxide layer on the surface.

Anodizing: Anodizing is commonly used for aluminum components, creating a durable and corrosion-resistant oxide layer on the surface. It also allows for coloring options and improved aesthetic appearance.

Shot peening: Shot peening involves bombarding the surface of the component with small metallic or ceramic particles to induce compressive stress, improving fatigue resistance and extending the component's lifespan.