Metal is an important material in industrial applications because of its durability and functionality. As a raw material, metals such as stainless steel are dull and chalky. Their uniform hues are stained with residue from welding, cutting and other manufacturing processes. In order to achieve a smooth and lustrous appearance, their surface must be sanded and chemically treated. Various techniques can be done to finish the metal based on its intended use. At SWI, we offer some of the following finishes on our products. To learn more about these options, contact us at 203.729.6434.
What Is Buffing?
The metal surface is essentially sanded down to remove scratches and material buildup. Different buffing wheels are used to achieve various smooth textures and bring out the natural luster in the metal.
High Polish Finish
What Is High Polish?
The metal surface is first buffed down to a smooth, uniform finish. Then, a polishing compound is applied to a cotton wheel and buffed across the surface. The friction causes the compound to melt and results in a luminous finish.
What Is Electropolish?
The metal surface is submerged in an electrolyte bath while exposed to a rectified current in order to remove surface flaws. Electropolishing is considered the "Reverse Plating Process" because it exposes the virgin material.
What Is Passivation?
The metal surface is treated with an oxide layer to draw out impurities and reduce corrosion. It also increases the stability of the surface and protects against possible contamination.
3A "Sanitary" Finish
What Is 3A?
Also known as the "Sanitary Finish", the metal surface is free of any dents or scratches to produce a mirror-like finish. The smooth surface can be cleaned easily to create a sterile environment. When metal products are used for the food, beverage or medical industries, this is a necessary process.