A Zinc Plating Company in Toronto, offering Barrel and Rack zinc metal coating processes for as long as anyone. Our Rack Plating line can handle lengths of up to 12 feet – longer than anyone. Whether your metal components are 1 inch, or 12 feet, 1 gram, or 400 pounds, H&E Plating has the tools and capacity to price competitively and process quickly, as per your electroplating specifications.
Benefits Of Zinc Electroplating
- Smooth visually appealing finish adds cosmetic value to metal components
- Excellent corrosion protection extends life of component
- Zinc plated components that require maintenance and adjustments as part of a larger mechanism remain easy to work with over time
- Enhanced adhesion as precursor to paint application
- Economically priced and potential for quick turnarounds
- Reliable history of performance as per engineering specifications regarding red and white rust salt spray testing
- Capable of very thin coatings when mating tolerances are tight
- Relatively gentle process with minimal effect on base layer means components can be replated over time to extend their life almost indefinitely
- Variety of chromates, dichromates and dyes to achieve desired colour
Zinc Chromate & Dichromate
Chromates and dichromates are supplementary post plating treatments that chemically passivate the surface of zinc coatings. This step enhances corrosion protection and gives the zinc plated component its desired colour and shiny appearance. Zinc dichromate can also be a precursor to paint as it increases adhesion potential. Chromates and dichromates do not add thickness to the zinc plated coating.
- Bright/Clear Zinc Chromate = Silver, blue-tinted finish. Hexavalent and Trivalent formulas are available. CLICK FOR IMAGE
- Yellow/Gold Zinc Dichromate = Golden,yellow tinted finish with slight rainbow iridescence. Hexavalent and Trivalent formulas are available. CLICK FOR IMAGE
- Black Zinc Chromate = Shiny black finish with slight iridesence. Not a matte finish.
Note: H&E Plating does not colour match to existing zinc plated components
The Thickness Of Zinc Plating
The standard thickness of zinc electroplating is commonly reffered to as “Commercial Zinc”. This coating amounts to .0002″ or 5 microns. The acceptable range of thickness depends on the provided engineering plating specification. The most common ASTM specs are listed as the bottom of this page. If you are having a problem finding, reading, or understanding a plating specification that has come across your desk, please feel free to contact us for help.
Rack Zinc Plating Vs Barrel Zinc Plating
You can learn more about these electroplating processes by clicking the links below:
Zinc For Corrosion Protection
In the never-ending fight against corrosion, zinc plating is an unsung hero. You’d be hard-pressed to go for a walk in Toronto without seeing zinc electroplated metal components serving our city and its citizens, if you know where to look.
When an electroplater ventures into downtown Toronto for a night course on how to build a website, and introduces himself to a class full of marketers, the easiest way to explain what we do is to point at the ceiling and say, “Do you see those pipes? Do you see the steel hardware holding them up? See how it’s shiny and blue? That’s zinc plating.”
This electroplater prefers communicating with manufacturers.
The annual global yield of zinc is approximately 14 million tonnes, making zinc the 4th most commonly used metal on earth. Nearly half of this yield goes towards towards the war on rust. Corrosion, or rust, or oxidation, is estimated to cost our planet nearly 2.5 trillion dollars annually. Zinc coatings on substrate materials such as steel, copper and brass are counted on to combat the enemy. These zinc metal coating processes are known as zinc electroplating, hot dip zinc galvanizing, metalizing(zinc spraying), mechanical plating and zinc-rich painting.
Why Does Metal Rust?
ASTM ZINC ELECTROPLATING SPECIFICATIONS
|ASTM B633 (Zinc Plating)||Service Condition (Thickness)|
|SC 1||5 microns, for iron/steel (Fe/Zn 5)|
|SC 2||8 microns, for iron/steel (Fe/Zn 8)|
|SC 3||12 microns, for iron/steel (Fe/Zn 12)|
|SC 4||25 microns, for iron/steel (Fe/Zn 25)|
|Types (Supplementary treatment or Finish)|
|I||As-plated without supplementary treatment|
|II||With colored chromate conversion coatings|
|III||With colorless chromate conversion coatings|
Zinc Plating Services In Toronto:
- Rack Line Zinc Plating
- Barrel Line Zinc Plating
- Micro Barrel Zinc Plating
- Bright/Clear Zinc Plating
- Bright/Clear Zinc Plating ROHS Compliant
- Yellow/Gold Zinc Plating
- Yellow Gold/Zinc Plating ROHS Compliant
- Zinc Plating No Chromate
- Zinc Plating Strip and Replate
- Zinc Plating Stress Relief (hydrogen embrittlement)
Zinc Metal Elemental Information
|Group||12||Melting point||419.527°C, 787.149°F, 692.677 K|
|Period||4||Boiling point||907°C, 1665°F, 1180 K|
|Block||d||Density (g cm−3)||7.134|
|Atomic number||30||Relative atomic mass||65.38|
|State at 20°C||Solid||Key isotopes||64Zn|
|Electron configuration||[Ar] 3d104s2||CAS number||7440-66-6|