1 Remove the wrap and rinse the residual liquid thoroughly.
2 baking. For workpieces with large loads, the coating must be baked at 200-300 ° C for 20 to 30 minutes to improve the bonding strength between the coating and the substrate.
3 machined after plating. Grinding or polishing is used to achieve the desired surface finish. Note that the post-processing steps such as grinding or polishing should be performed after the workpiece temperature has cooled to room temperature. After the brush plating is machined, it is ground on the grinding machine, and the amount of feed can not exceed 0.03mm.
4 bad brush chrome layer removal method. Unqualified brush chrome plating can be chemically removed with about 20% hydrochloric acid. After the chromium layer is in contact with the hydrochloric acid solution for a while, it reacts and bubbles vigorously. Retreat until no bubbles are present. In the deplating process, the heat is released, so that the temperature of the solution rises. If the temperature is too high (greater than 30 ° C), it must be cooled, otherwise the workpiece will be seriously corroded.
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