Services > Electropolishing
Electropolishing of Stainless Steel and other metals
The surface finish of a metal component will determine its appearance, function and service life.
Electropolishing significantly improves the crucial metallic surface properties. An ultra high quality surface finish is obtained by a simple and cost effective operation.
Material removal by
The Process PrincipleElectropolishing is, in principle a reversal of the electroplating process. Metal is removed by applying a dc current to the anodically connected work piece submerged in a special acid electrolyte. Removal takes place without inducing stress and preferentially affects the surface micro-roughness. The surface becomes smooth and bright, with burrs, edges and corners being removed preferentially.
The results can be repeated with a high degree of precision so that components with tight tolerances can also be treated in safety.
What Materials can be Electropolished?Poligrat have electrolytes and processes which are designed to effectively process most of the common engineering materials.
Electropolishing will bring out the characteristic properties of the material to maximum effect.
The Process Results
Electropolished and mechanically produced metal surfaces have fundamental differences.
Mechanical operations such as machining, drilling, grinding and polishing will all adversely affect the structure and properties of the material surface. Contamination resulting from tool abrasion and contact with coolants, can lead to corrosion and wear. Dependent upon the degree of the manufacturing forces applied, the surface structure can be affected to a depth of 50 microns.
In contrast to this, Electro-polishing will remove metal from the component without mechanical, thermal or chemical transformation. Electro-polishing will eliminate damaged surface layers and allow the original properties of the material to be fully utilised.
Sharpening of cutting edge by electropolishing
The areas of ApplicationThe POLIGRAT processes and the electro-polished surfaces produced by these processes have been employed in a wide range of varying applications in practically all fields of engineering and industry:
On Site ProcessingIn the particular case of large vessels, which cannot easily be shipped to our works, Poligrat have an experienced team of technicians who can carry out electropolishing at your site.