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Able will remain fully operational during the “Shelter in Place” order by the State of IL in response to the COVID-19 Virus. Able Electropolishing has been deemed a critical service for the medical and defense industries so we are continuing our operations and should be exempt from any local, state or federal restrictions on business operations.

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Electropolishing Case Study: Brazed Medical Assembly Needing Careful Cleaning

Industry

Medical/Dental: Manufacturers of orthopedic equipment

Electropolishing Case Study: Brazed Medical Assembly Needing Careful Cleaning

MFG/METHOD

Brazed Assembly

ALLOY

304 and 302 stainless steel

PROBLEM

The proximal arm tube is part of a wheelchair accessory. It is part of a component that simulates a shoulder and elbow joint to allow paralyzed people to feed themselves. Our customer had been mechanically polishing this part to get a smooth bright uniform finish. The proximal arm tube has three tubes brazed together with a wire form assembled into it. Brazing leaves behind an uneven buildup of splatter and some heat discoloration. Not only is it difficult to achieve a uniform and bright finish, but these parts can be dangerous to handle on high speed polishing wheels. Our customer had to find a way to reduce the time each assembly is polished.

SOLUTION

Our customer looked into electropolishing as a method to replace the costly time consuming and hazardous in house operation. We electropolished several samples with varying controlled material removals. The electropolished samples were bright and the brazing cleaned up. Our customer received the electropolished samples and assembled them into the wheelchair accessory. By electropolishing the ‘Proximal Arm Tube’ our customer determined that they would save time and improve their quality. Electropolishing cleaned and passivated each part in one low cost operation.


Note to engineer:In some cases, the combination of mechanical finishing (belt polishing) and electropolishing together produce surface finishes of a luster and smoothness that is near “jewelry” in appearance. If your component or assembly requires an unusually high level finish, please call for details. maximize end finish results. Please contact our technical representatives for further information.


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