The hard chrome plating process of Chrome rod is to coat a thick layer of chrome plating on various substrates. Its thickness is generally above 20μm. The characteristics of chromium are used to improve the hardness, wear resistance, temperature resistance and corrosion resistance of the parts. Hard chrome plating is a thick layer of chrome plating on various substrates. Its thickness is generally high; hard chrome plating is widely used, such as mechanical molds, cylinder pistons, measuring tools, cutting and drawing tools. Another use is for repairing worn parts and over-cutting parts, allowing them to be reused.
20μm or more, using the characteristics of chromium to improve the hardness, wear resistance, temperature resistance and corrosion resistance of the parts.
1. The surface roughness grade of parts with hard chrome plating is required to be greater than 6.3 in order to ensure surface quality.
2. After degreasing and rusting, there shall be no visible oil film and rust on the surface of the part. Otherwise, the time should be extended to remove the net, but the immersion time should be prevented from being too long to avoid damage to the parts. If there is black ash on the surface of the part after processing, it must be cleaned.
3. Partially chrome-plated parts should be insulated before plating.
4, hangers and parts should be firmly connected, good electrical conductivity, the hanging method should be appropriate.
5. The inrush current Dk after anodic corrosion is 1.5 to 2 times that of normal Dk, and the time is 0.5 min to 2 min.