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1034 – Machined medical part wearing due to metal-to-metal contact

#1034 Brite Microfinishing/Reduced Galling

Industry:

Medical - Manufacturers of medical devices and equipment

Mfg/Method:

Machined

Alloy:

303 Stainless Steel

Reduced Galling

Problem:

The part depicted is a critical component of a needeless injection system. The part literally rubs against another metal part surface, and the metal-to-metal contact was creating some product performance problems. The customer needed to reduce galling which was leading to premature wear in the device.

Solution:

Electropolishing smoothed out the surface of the body by removing the outer layer of metal. Subsequent tests showed an improved cycle life of the part.


Note to engineer: Galling is a common problem where intimate contact of metal surfaces occurs. For details on galling, its causes and possible solutions, the fastener industry has done extensive research. If you suspect a galling problem, we can work with you by processing samples.


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