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Why Zinc Plating?How to distinguish zinc and chromed?
- Sep 08, 2017 -

Most people you talk to about zinc electroplating, have very little knowledge of what  that process means, or why you would want to perform it. As you go a little deeper into the explanation of what zinc electroplating entails, they begin to see the picture.

Looking at a car, there are many parts that will corrode from exposure to water and salt from the roads. The corrosion leads to part failure if left unchecked. The next question that comes to mind is, how do you protect these parts? Answer: You add a coating on top of the parts to slow down or prevent corrosion. There are a variety of coatings available to perform this task with just as large a variety in costs. Some examples of coatings are powder coating, E-coating, wet paint, galvanizing, zinc flake, zinc plating, nickel-chrome plating, hard chrome and electroless nickel plating covers most of the coatings used today.

Zinc is white,and never shiny,unless YOU polish it. Nickel has a yellow tinge,and looks warm,while chrome is blue,and has a cool look to it. Cadmium is somewhat shiner than zinc,and I think it may sometimes have traces of other colors at 1 end of the article(could be wrong about that).

Zinc is what galvanizing is done with,and unless things have changed,is a thicker coating than cadmium. Certainly hardware quality nuts and bolts have fairly rough zinc coatings on them,ID they are plated. They can also be plated with the thinner,smoother,matte-shiny looking cadmium.

Do NOT weld cadmium items. The fumes are poisonous.

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