A Beginner’s Guide to Burnishing in Mass Finishing
Updated: May 9, 2023Burnishing metal is a powerful technique that can transform the surface of your manufactured parts, giving them a smooth and polished finish. Whether you're new to mass finishing or looking to refine your process, this guide from Finishing Systems will walk you through everything you need to know about burnishing.
What Is Burnishing Metal?
Burnishing is a common finishing method used in vibratory finishing machines, which can be either tub or bowl-shaped. It's part of a broader process known as mass finishing, which involves finishing multiple parts at once using vibratory means. Burnishing typically uses ceramic, porcelain, or steel media to polish the surface of workpieces. Steel media is especially popular due to its durability and effectiveness. The choice of media depends on the shape and size of the parts being finished, with the "balcone" shape being one of the most commonly used. This process results in a bright, shiny, and professional-looking finish.
3 Benefits of Burnishing
There are several advantages to incorporating burnishing into your manufacturing workflow:
- Short Cycle Time: Burnishing is much faster than manual polishing, especially when using automated vibratory machines. With the right compound, the process becomes even more efficient. However, steel media requires a heavy-duty machine to handle the weight and pressure involved.
- Compounding: Choosing the right burnishing compound is crucial for success. It helps lubricate the media and ensures better results. If your media isn't properly compounded, your finished parts may not look their best.
- Key Elements: Like all mass finishing processes, burnishing relies on five key elements: parts, equipment, media, compound, and water. Each plays an important role in achieving the desired finish.
The Burnishing Process
The burnishing process is usually carried out using specialized machinery and is widely used in industrial settings. One popular method is ball burnishing, where a hard ball is pressed against the surface of the workpiece to create contact stress and achieve a mirror-like finish. This technique is often used to enhance the appearance and luster of metal surfaces.
Explore Mass Finishing Equipment From Finishing Systems
Burnishing is an excellent way to achieve a high-quality finish without removing any material from the workpiece. At Finishing Systems, we offer a wide range of mass-finishing equipment designed to clean, burnish, and color parts for various applications. Our York, PA Job Shop also provides professional burnishing services for those who prefer a hands-on approach.
If you're looking to improve your finishing process or have questions about our products, we’re here to help. With over 40 years of experience, our team understands the unique needs of manufacturers like yours. Contact us today to learn how our advanced mass-finishing solutions can benefit your business.
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