Zinc & Zinc Alloys
Zinc and Zinc alloys provide high performance cost effective coatings which together with trivalent chromium based passivates and organic top coats provide excellent corrosion resistance to steel based components. These coatings are protected by a mechanism of sacrificial protection. The zinc/ zinc alloy coating corroding preferentially to the substrate.
The initial attack on the zinc/ zinc alloy coating is inhibited by the passivate/ organic top coat layers which inhibits the formation of white rust. This multi-layer approach provides excellent corrosion performance and has many automotive companies approvals. All of these systems are covered by the MacDermid Enthone Zinklad Automotive Corrosion programme.
|
Type of Zinc plating |
Product/System |
Description |
|
Cyanide Zinc |
Unizin B830 |
Single brightener process. Suitable for all cyanide electrolytes. |
|
Acid Zinc |
Bright Acid zinc |
Suitable for all acid zinc electrolytes. The process consists of a two-part Brightener and Carrier |
|
Duo -Zin 0191F |
The latest technology in acid zinc plating. Consisting of a single Brightener / Carrier and a Wetting Agent. This process is suitable for use in all acid zinc electrolytes |
|
|
Alkaline Zinc |
Envirozin 5 Rack |
Is a low metal zinc process that produces a bright deposit from a single additive. The processes have excellent throwing power, and the deposit is very receptive to passivates. |
|
Envirozin 5 Barrel |
The process was originally designed to be an exceptionally reliable alternative to cyanide baths. The process works on a two-component system a brightener and carrier which produce a bright zinc deposit which is very receptive to passivation. |
|
|
Envirozin 120 |
Is a highly efficient process suitable for both rack and barrel applications. It is specified by several car manufacturers for their corrosion requirements. The deposit is very receptive to topcoats and seals. |
|
|
Envirozin KO8 Rack |
A very bright decorative process based on a low metal, potassium hydroxide, electrolyte. It was originally designed for the plating of shop trolleys. |
|
|
Alkaline Zinc-Nickel |
Enviralloy Ni 12-15 |
An Iconic process used in the automotive and aerospace industries where it is an alternative to Cadmium. This process achieves exceptional corrosion resistance. It is suitable for both rack and barrel applications. |
|
Alkaline Zinc-Iron |
Zincrolyte NCZ 191 |
A versatile zinc iron or zinc cobalt alloy plating process with superior corrosion resistance. The deposit readily excepts all passivate types. |
Get in touch
Contact Us
Physical Address: 51 Milne Street, Durban 4001
Postal Address: P O Box 437, Durban 4000
Tel: +27 (31) 335 1260
Fax: +27 (31) 335 1261
info@esmowat.co.za