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Polishing in Metal Finishing
Metal finishing involves several stages to achieve the desired results. One critical step in metal finishing is polishing. It enhances the appearance of metals making it more appealing and aesthetically pleasing. Polishing also provides functional benefits such as reducing corrosion, increasing surface hardness, and creating a smooth surface. Microfinish provides top tier finishing services, and we want our customers to know the options available when it comes to polishing. Our goal is to help you make an informed decision on what best suits your needs.
Mechanical polishing
Mechanical polishing is the most common type of polishing in the manufacturing industry. It uses mechanical abrasives such as sandpaper, diamond, or ceramic abrasive to remove the outer layer of the metal surface, creating a high shine. It works best on flat surfaces and removes scratches, surface defects, and other unwanted materials. One advantage of mechanical polishing is that it’s a fast and cost-effective method. However, it produces a uniform finish, which may not be ideal for metals with intricate designs.
Electropolishing
Electropolishing is a process that uses an electric current to remove the outer layer of the metal surface, creating a smooth and reflective surface. It’s ideal for complex metal shapes, inner diameters, and hard-to-reach areas. Electropolishing is effective in reducing surface roughness, improving corrosion resistance, and removing impurities on stainless steel and other metals. One of the significant advantages of electropolishing is it’s a non-contact process, which eliminates mechanical deformation of the metal surface.
Chemical polishing
Chemical polishing is a process that uses chemicals to remove the outer layer of the metal surface, creating a smooth and reflective finish. For example, it is commonly used in the semiconductor industry for the production of silicon wafers. Chemical polishing works well on metals that are difficult to machine, such as titanium, and alloys. The process involves immersing the metal in an acidic or alkaline solution, with varying temperatures and concentrations of chemicals. One advantage of chemical polishing is that it produces a glossy finish without removing too much material.
Vibratory polishing
Vibratory polishing is a process that involves putting the metal parts in a container with abrasive media, water, and a compound solution. The container is then vibrated, causing the parts to rub against each other, resulting in a polished finish. Vibratory polishing is ideal for small parts such as jewelry, auto parts, and machine parts. It’s a fast and cost-effective method of polishing, which produces a uniform finish.
Results of metal polishing aren’t limited to aesthetics. Different techniques and finishes serve diverse purposes. Rust and corrosion removal are achieved when grinding and polishing techniques restore damaged metal, preserving its functionality and longevity. Improved conductivity for electrical components from a smooth, polished surface ensures optimal current flow. In machinery and equipment, polished surfaces reduce friction and wear, boosting performance and efficiency.
What’s the best metal polishing technique?
Choosing the right polishing technique for your product depends on several factors. Different metals respond differently to abrasives and require specific techniques.
Polishing techniques also result in differing finishes. A mirror finish, a satin sheen, or a specific texture each demands a tailored approach. Finally, look at the functionality of the part. Consider if good aesthetics is the goal or if the finish needs to serve a specific function.
Metal polishing is more than tools and techniques. Microfinish has the patience, precision, and understanding of the metal itself. Our skilled finishing experts develop a feel for the material, apply just the right pressure and choose the perfect combination of abrasives and equipment to produce just the right result. Your search for the top metal polishing company stops with Microfinish. We are committed to providing consistent finishing results for any size job. We don’t sacrifice quality for efficiency, and we can complete your low-volume or high-volume metal finishing needs. See what our St. Louis team can accomplish for you with the quality and perfection that comes with over 60 years of experience. After all, we are here to the finish. Call today at (314) 849-8181.
