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Alternate finish needed for blued spring clips
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I currently have a rust issue with a 0.010" thick cold rolled annealed spring clip. It is natural blued after hardening. These parts are used in a chassis that is installed in a CO environment; not exposed to extreme elements. Our customers have advised these clips are rusting after they have been in the field for a period of time. I am looking for an alternative finish that will prevent this without changing the integrity of the heat treating process. Please advise your recommendation(s). Thanks in advance!
Tory GiammancoPrincipal Engr. - Telecom - Rolling Meadows, IL, USA
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These oxide finishes offer little if any corrosion resistance. You may need to do something more radical like zinc plating them, but since the exposure is mild you could try a water soluble wax or lacquer, or a light oiling of your blued finish first. Your local plating supplies distributor should be able to suggest such a dip.
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Ted Mooney, P.E. finishing.com Brick, New Jersey |
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With Zinc plating you will have to consider hydrogen embrittlement. Wax, oil or simple dip coat paint are easy options. Ecoating is another option you can try.
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Gurvin Singh Coatec India - Mohali, Punjab, India |
