TR-669 White Blue Trivalent Chromium Passivator For Zinc Plating

Properties

1. Environmental trivalent chromium passivation solution, in line with RHOS directive, clean production processes.

2. The zinc plating workpiece layer appears translucent after white-blue passivation.

3. Economy passivation solution, impurities high tolerance, long life cycle and low cost.

Technological process

Zinc plating → Washing with water → Brighten with dilute nitric acid → Washing with cool water → Washing with hot deionized water → drying

Operating Condition

Note:

Preparation: first add the required TR-669 concentrate trivalent chromium passivation, and then diluted to a final volume with deionized water.

Heating: Heat if necessary. It is better to use acid-proof material outside of the heating equipment (e.g.: Teflon, glass, etc.).

agitation: rack moving or low pressure air agitation.