Example 7 Uniform Internal and External Cadmium Plating of Splined Couplings

A coupling that required 8 to 13 ^m (320 to 520 ^in.) all over, except for the last 6.4 mm (4 in.) of the outside diameter of the small end, is shown in Fig. 8. The internal splines on both large and small bores were checked with plug gages and a single-tooth gage to ensure uniformity of plate thickness. To obtain the required uniformity, a 6.4 mm (4 in.) diameter anode was centered in the bore during plating. Although the outer surface of the large end of the coupling accumulated a heavier coating than other areas, general plate-thickness uniformity met requirements.

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