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Matt Martz
| NASF Education Director
(202) 527-0252
| mmartz@NASF.org

Zinc and Zinc Alloy Plating

Course Options

The course consists of 10 lessons. Students successfully completing the exam will be given credit towards the Master Surface Finishers (MSF) certification. While it is not necessary to take any course to be eligible to sit for the respective exam that could lead you to becoming a Master Surface Finisher (MSF), this course covers one of the optional subject areas for qualifying to obtain MSF certification.

Intended Audience

This training program is designed to be beneficial for operators and supervisors of job shops and captive shops performing zinc and or zinc alloy plating operations on a variety of substrates. The course can also benefit sales personnel at industry suppliers.

Trainees should have at minimum a high school diploma. The training materials and instruction are in English. In many cases, metric and/or US/English units of measurement are utilized. Students are taught how to convert between the two
systems of measurement when required.

Goal

The goal of this course is to provide students with a broad range of information related to the metallurgy and corrosion behavior of zinc coatings. Students will also know the differences between the various zinc plating processes and between the various zinc alloy plating process, including what can go wrong and how to solve plating problems.

Objective

The objective of the lessons in this course is to prepare students for a certification examination that will provide them with an opportunity to demonstrate their knowledge in technologies that may be employed in the precious metals plating industry, whereby quality of finished goods may be improved and the costs of operation are reduced or eliminated, making them more valuable to their employers. At the conclusion of this course, attendees should:

1. Electroplating Basics for Zinc Platers
This lesson will provide basic chemical, electrochemical and metallurgical background that will allow the student to make basic calculations of current density and plating times for both rack and barrel plating of zinc and zinc alloys.
2. Introduction-Historical Development & Applications of Zinc Coatings
This lesson will provide an introduction into zinc coatings from a historical perspective that is then followed by a discussion of economics, corrosion mechanisms, and methods used to apply zinc coatings (mechanical plating, electroplating, hot dip galvanizing and flake diffusion processes).
3. Preparing Parts for Zinc Plating & Post Plate Baking
This lesson will provide guidance on preparing substrates for zinc plating. Covered are ultrasonic cleaning, vapor degreasing, soak cleaning, electrocleaning, descaling and acid pickling.
4. Cyanide Zinc Plating
This lesson provides chemical make-up and operational conditions for the cyanide-based zinc plating solutions in use in the metal finishing industry. Special focus is given to function of and control over individual ingredients in each process. Common contaminants and possible methods of removal/treatment are discussed.
5. Alkaline Non-Cyanide Zinc Plating
This lesson provides chemical make-up and operational conditions for the alkaline non-cyanide based zinc plating solutions in use in the metal finishing industry. Special focus is given to function of and control over individual ingredients in each process. Common contaminants and possible methods of removal/treatment are discussed.
6. Chloride Zinc Plating
This lesson provides chemical make-up and operational conditions for the acid chloride based zinc plating solutions in use in the metal finishing industry. Special focus is given to function of and control over individual ingredients in each process. Common contaminants and possible methods of removal/treatment are discussed.
7. Zinc Alloy Plating, Part 1: Zinc-Nickel
This lesson provides chemical make-up and operational conditions for the alkaline and acidic zinc nickel plating solutions in use in the metal finishing industry. Special focus is given to function of and control over individual ingredients in each process. Common contaminants and possible methods of removal/treatment are discussed.
8. Zinc Alloy Plating, Part 2: Zinc-Cobalt
This lesson provides chemical make-up and operational conditions for the alkaline and acidic zinc cobalt plating solutions in use in the metal finishing industry. Special focus is given to function of and control over individual ingredients in each process. Common contaminants and possible methods of removal/treatment are discussed.
9. Zinc Alloy Plating, Part 3: Zinc-Iron
This lesson provides chemical make-up and operational conditions for the alkaline and acidic zinc iron plating solutions in use in the metal finishing industry. Special focus is given to function of and control over individual ingredients in each process. Common contaminants and possible methods of removal/treatment are discussed.
10. Chromate Conversion Coatings over Zinc and Zinc Alloys
This lesson provides chemical make-up and operational conditions for hexavalent and trivalent chemical conversion coatings for zinc and zinc alloy deposits. A major focus is good operating practices that yield the highest level of corrosion resistance.