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Metal Finishing

Electropolishing Services: Providing The Right Finishing Touches

In finishing, the various technologies fall into specifically defined categories based on their method. Three common classifications are: Plating: Electroless and Electroplating Chemical conversion Electrochemical conversion processes The fabrication business often considers the finishing process to be categorized in two groups; plating and chemical and electrochemical conversion. However, as is the normal state in life, there are exceptions to this rule. One of the more commonly employed finishing technologies does not fall under the umbrella of any of the above. These are electropolishing services. Although it shares the same technology or tools with electroplating, it is almost the antithesis of the treatment. Other Distinguishing Characteristics Electropolishing is different from other finishing techniques in a number of ways. It Is a micro process – focusing on specific aspects Does not compete with such finishing processes as grinding, polishing or buffing Can be employed with other finishing processes to produce a truly finished piece of work Is not limited, in most cases by either size or shape. Pieces to be electro polished can be as small as a hollow medical instrument (a needle) to as large as a 15,000-gallon vessel These are also provide some of the rationale behind choosing electropolishing services over other finishing or polishing methods. Basic Facts about Electropolishing Electropolishing requires skill and the right equipment. The process entails attention is paid to specific details. Fabricators are aware of the following facts concerning the process: Preparation: While some parts may be electro polished without pre- preparation, many require a thorough cleaning or pretreatment to remove any grime, grease, dirt or scale Post Process: Fabricators must wash the parts to remove the electropolishing solution Cathodes: Components of a simple shape will use general-purpose cathodes; more complex parts usually need purpose-built cathodes and other special fixtures Equipment: The solutions employed in the process are highly acidic and corrosive. This requires the equipment be resistant to these characteristics. It also means the safety of employees be paramount when handling or using such material. The same applies to the build-up of gas. Improper care can result in an explosion Overall, the process can last up to 20 minutes, although shorter and longer times are often required. Electropolishing Services: A Micro Finishing Process Electropolishing can be performed, theoretically on any metal. A micro polishing process it is both a stand-alone and complementary method. Utilizing a variety of solutions to produce the desired results, it can produce a component that is both functional and aesthetically pleasing. If nothing else, electropolishing services are a controlled removal of metal from the surface of a component resulting in the production of a part that will function with great precision and durability for an...

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Quality Metal Finishing Meets a Variety of Industry Needs

Quality metal finishing is a key method used to protect and even enhance the use of items such as firearms and automotive parts. With methods such as plating, deburring, polishing, and cleaning for finishing a wide range of metals, metal finishing is a process that can be used in a range of industries including automotive, military, aerospace and medical. Quality Metal Finishing Techniques The finishing process used depends on the type of material the part is manufactured out of and what type of finish or final look is desired. Common metal finishing techniques include: Anodizing – for this process metal is coated with an oxide using the method of electrolysis. The type of coatings produced through this process can be decorative and come in a variety of colors while providing protection for the metal components. Deburring – this process is part of vibratory finishing, which is a mass type of finishing that involves placing small parts into a vibratory tumbler that is filled with specially shaped pellets of media and then vibrated. This technique improves the metal surface by removing burs on the outside of the metal as well as internal features like holes. Polishing – this process is typically done using a centrifugal barrel finishing technique resulting in a consistent and constant finish, which helps to bring out the shine of the metal and enhance the appearance of the surface. Passivation – this technique used to apply a thin coat of protective material to the surface in order to strengthen and preserve metal parts. The metal is first soaked in a passivating acid bath and is then neutralized and rinsed. Once the part is dried, a protective outer layer is left on the metal. Other techniques used include deflashing, radiusing, as well as cleaning and plating. It is best to consult with a finishing company to ensure the proper technique is used for ideal results. Finding the Best Finishing Company for Your Applications When searching for a finishing company to take care of your needs, it is important to find one that can offer the above services as well as process design, environmentally safe processes and have the ability to handle various jobs, ranging from simple surface finishing to high energy isotropic finishing to ensure you receive quality metal finishing for your components and...

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