Polished Aluminum Profile

Chemical polishing and electrochemical polishing are advanced finishing methods that can remove slight mold spots and scratches on the surface of aluminum products; Both can also remove friction bands, thermal deformation layers, and anodized film layers that may form during mechanical polishing. After chemical or electrochemical polishing, the rough surface of aluminum workpieces is often as smooth and shiny as a mirror, thereby improving the decorative effect of aluminum products (such as reflection performance, brightness, etc.).

Types of Polishing Aluminum Profiles

Mechanical polishing is the use of physical tools to plastic deform the aluminum surface through high-speed cutting and grinding, forcing the convex parts of the surface to fill the concave parts, thereby reducing the roughness of the smooth aluminum profile surface. However, mechanical polishing may damage the crystallization on the metal surface, and even produce plastic deformation layers and structural change layers due to local heating.

Chemical polishing is a type of chemical corrosion under special conditions, which involves controlling selective dissolution to dissolve the convex part of the aluminum profile surface before the concave area, ultimately achieving a smooth and bright surface.

The process of electrochemical polishing, also known as electro polishing, is similar to chemical polishing in that it can control selective dissolution to make the surface smooth and bright. According to the principle of electrochemical tip discharge, aluminum profiles are immersed in a prepared electrolyte as anodes, and corrosion-resistant materials with good conductivity are immersed in cathodes.

In industrial production, the main purpose of chemical polishing or electrochemical polishing is to replace mechanical polishing to obtain a smooth and bright surface. The second method is to use chemical polishing or electrochemical polishing to achieve high spectacular reflectivity of aluminum and aluminum parts.

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