Hard Chrome

This technique is performed on metallic components, through the electrodeposition of chromium ions present in the chromic acid solution in the bath after immersion of the previously prepared part.

This preparation of the parts, before being immersed in the bath, aims to clean, and activate the surface where the coating will be applied.

Immediately after preparation, the surface is in the natural passivation phase, in which, through the oxidation reaction in the environment inside the chromium bath, chromium oxides are formed on the coated surface. The preparation of the layer can include mechanical stripping, polishing, construction of fastening devices, degreasing and surface washing, among others.

This preparation is extremely important to obtain the main characteristics of the hard chrome used in Cascadura Coatings, such as:

• High hardness: 950 to 1050 HV (Indirect Conversion – Higher than 65 HRC);
• High resistance to abrasion;
• Corrosion resistant;
• Non-stick / High release;
• Low coefficient of friction;
• Resistant to high temperatures without losing its properties (- 350ºC);
• The traditional layer limit is 50 µm to 250 µm.