Troubleshooting Blue Chrome 6

Troubleshooting for Blue Chrome 6

1. Poor adhesion or lack of durability

   • Cause: Using low-quality coatings, incorrect coating formulation, or improper surface preparation before coating.

   • Solution:

     • Check the cleanliness of the workpiece before coating by cleaning the surface with appropriate methods, such as using chemicals to remove oil stains or other contaminants.

     • Adjust the chemical mixture according to the recommended guidelines.

     • Set the parameters such as temperature and coating time properly.

2. Uneven color or spotting

   • Cause: Incorrect chemical mixing, improper coating time, or incorrect voltage.

   • Solution:

     • Adjust the chemical mixture according to the recommended guidelines.

     • Check the coating time and temperature to match the recommendations.

     • Avoid coating in conditions with high humidity or improper temperatures.

3. Corrosion or rust formation

   • Cause: Incomplete coating process, use of degraded chemicals, or exposure to corrosive chemicals.

   • Solution:

     • Use high-quality coatings suitable for the type of workpiece.

     • Check the condition of the chemicals before use and replace them when necessary.

     • Verify the temperature settings and coating time to ensure they are correct.

4. Issues working with Hexavalent Chromium

   • Cause: Hexavalent chromium is highly toxic and may cause health issues.

   • Solution:

     • Use personal protective measures such as gloves, masks, and work in well-ventilated areas.

     • Apply hexavalent chromium coatings according to safety standards.

     • Consider using non-chromium 6 chemicals or trivalent chromium (Cr3), which is safer.

5. Poor adhesion of the coating

   • Cause: The coating fails to adhere well to the metal surface or reacts with the material’s surface.

   • Solution:

     • Check the surface preparation of the material before coating to ensure it is clean.

     • Use coatings that are appropriate for the type of metal.

6. Precipitation in the solution

   • Cause: Incorrect chemical mixing or improper storage of the solution.

   • Solution:

     • Mix chemicals according to the recommended formulas.

     • Store the solution in clean, tightly sealed containers to prevent contamination.

     • Ensure the temperature and concentration of the solution are appropriate.

Zinc Chromating

Zinc chromating powder is a chrome 6 type blue chromate. It is a metal surface treatment process that requires small amounts and is easy to maintain. The pH of the solution does not change frequently. It provides excellent corrosion resistance and gives the workpiece a blue color while adhering well.

After dipping the workpiece in the zinc chromating solution, it should be rinsed with clean water immediately and baked quickly. If the workpiece is left in the air for too long, the color will peel off, removing the zinc coating and increasing the formation of a yellowish film on the workpiece.

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