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Ted Mooney, P.E. RET
Pine Beach, NJ
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EN thickness is reduced by baking?
Could you tell me why is it that after electroless nickel plating when we check the thickness by thickness tester(magnetic base) enp(high phosphorus) shows a higher thickness than when we check the same component after doing the heat treatment.
Malharplating - Mumbai, Mharashtra, India
2003
Heat treatment increases EN coating magnetism and hence, an apparent decreased thickness on a magnetic base metal. Thus, if measuring per ASTM B499 -- Method of Measurement of Coating Thickness by the Magnetic Method: Nonmagnetic Coatings on Magnetic Basis Metals, "the instrument should be calibrated against heat-treated standards of known coatings thickness or equivalent calibration foils." MIL-C-26074 [on DLA], paragraph 6.4.
Ken Vlach [deceased]- Goleta, California
Finishing.com honored Ken for his countless carefully researched responses. He passed away May 14, 2015.Rest in peace, Ken. Thank you for your hard work which the finishing world, and we at finishing.com, continue to benefit from.
2003
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