Anodic Etching - A Method of Detecting Grinding Burns on Chromium Plated Steel Parts,

摘要

Anodic etching, a method for detecting abusive grinding damage on chromium plated steel parts, is evaluated. Anodic etching procedure for inspecting chromium plated steel pins was studied and the mechanism of the anodic etch burn indication is discussed. In addition, the results of magnetic particle and penetrant inspection of the pins is presented. The results indicate that abusive grinding of chromium plate can cause cracks or burns in the plate or base metal that are not detected by conventional inspection techniques. Anodic etching is a useful technique for determining if chromium plate has been burned by abusive grinding. If the plate is burned, further investigation is required to determine whether the base metal is burned or cracked.