When it comes to creating a smooth, brilliant and bright look to the surface of any stainless or metal alloy part electropolishing may be the answer you have been looking for. While not as commonly used in the mainstream of parts finishing it is a very versatile option and one which allows for microscopic removal of surface imperfections for even the most demanding type of use and requirements.
For medical devices, precision parts for aerospace or military use, and where surface friction has to be minimized, electropolishing is the best option. Since it removes much less surface material than deburring or other options it is ideal for smaller parts and where specifications and adherence to standards is essential.
Keep in mind electropolishing only removes just a very microscopic layer of the metal undergoing the process. This doesn’t change the size of the part or the component, but it will add smoothness, cleanness and aesthetic standards not possible through other operations.
What is Removed?
Through precision electropolishing there is approximately 0.0003 to 0.0007 of an inch removed from the surface of the stainless steel or metal alloy part. It is only the very surface layer which is exposed to the processes, removing any imperfections and providing a bright, durable and polished looking surface which gives a different level of appearance to the part.
Different metal alloys and stainless steel parts may require more intensive electropolishing processing. This is based on several factors including the level of corrosion protection required, the processing time, and the amount of electrical current which is used.
How it Works
Through the process of electropolishing, the part or component is immersed in a bath of electrolytes which becomes the anode. In addition, there is also a connection to a cathode which allows the current to pass through the solution, which is typically a concentrated acidic solution.
The current passing through the solution dissolves the small, parts protruding from the surface of the stainless steel or metal alloy part with changing the level or recessed parts of the surface. The result is a smooth, even surface at a microscopic level.
It is very beneficial since it works with objects of all different shapes and surface textures. Because electropolishing is so effective and can be so carefully controlled it can be used even on very thin and delicate pieces where traditional deburring processes may actually cause additional damage to the surface.
At PEP General Metal Finishing we can provide electropolishing services for all your needs. To learn more about the process go to website.
