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topic 35868

Problem in Hard Chrome Problem only on Induction Hardened Parts


2005

A machine part (iron) after the induction hardening process proceed to grinding then chromium electroplatings have wavy (smooth as usual) chromed surface on certain area of it. However, no problem encountered for the similar part without induction hardening process. Could it because of the surface reaction during the high temperature treatment? Or could it cause by the cleaning treatment before chromium electroplatings process? For your information, we are using NaOH (caustic) to remove all the grinding compound or mineral tramp oil. Should we use a stronger degreaser to do the job?

Yeo Heng Kwang
Industrialist - Selangor, Malaysia



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