ZINTEK
Zintek® 200
This system produces finishes based on zinc and aluminum mikrolamel, which is manufactured by Atotech. After curing, it forms an organic nontoxic coating, which contains no chrome or heavy metals. It may contain a small amount of PTFE lubricant in order to improve the coefficient of friction.
The minimum thickness of the coating is determined by the performance requirements of the coated parts. It is generally determined by the thickness of one layer of 4-6 microns. In a typical application of two layers, the coating is a thickness of 8-12 microns. To improve the mechanical and corrosion properties, it can be applied to inorganic top coat Zintek TOP (L) or organic Techseal.
Zintek TOP (L)
Mineral topcoat containing hexavalent chromium. The addition of lubricant ensures friction coefficient from 0.08 to 0.14 and also improves the physical properties of the surface, such as increased chemical resistance, abrasion, and especially corrosion resistance of between 720 and 1200 hours NSS.
Zintek® 300B
This black undercoating prevents "silver stain" in the handling of the product. Zintek 300B contains zinc and aluminum lamellae. Metal particles with a mineral resin are formed on a steel base material coating, which is thermally hardened. This creates a conductive zinc-aluminum coating, which provides cathodic protection of the base material. The coating does not contain lead, mercury, cadmium chromate. Zintek® 300B is applied by non-electrolytic dipping or spraying, to ensure no hydrogen embrittlement of the coating.
Techdip Black
Topcoat black, suitable for Zintek® 300B. Techseal is applied in two layers and can improve the physical properties of the surface, such as increased chemical resistance, abrasion and corrosion resistance. This coating can be applied to stainless steel material, and also to electrolytic principal surfaces.
Visual Appearance
By default, the appearance is silver or black. Other colours are available on request.
Technical specification
The layer thickness is between 8-12 microns.
Salt spray test (ASTM B117) exceeds 600 hours.
Main advantages
• protection coating has excellent anti-corrosion properties and adhesion
• method of application does not cause hydrogen embrittlement
• environmentally friendly
• reduces bimetallic corrosion with aluminum
• thermally stable
• cathodic protection
• resistant to acids and alkalis, fuels, brake fluid, etc..
• can be applied as a lubricant, governing friction values in the required range
Specifications
• Fiat 9.57513
• DBL 9440.40
• TRW TS 2-25-060G
• Continental Teves: ATE N 106 61.00
• GME 00255
• GMW 3359
and more.
Application methods
A thorough cleaning of the surfaces is required prior to application. Unlike other coatings, it does not require phosphating of zinc. Application is carried out in three ways:
1. Dip spin - Bulk application by soaking in a basket and spinning excess paint. This process repeats twice to ensure a uniform layer and the solid surface.
2. Dip drain - For larger parts the suspension method is used, which involves wetting followed by centrifugation to remove excess paint colours.
3. Spraying - Uses traditional robotic spray technology. This method is used for partial treatment of larger parts, such as brake discs, and also for the uniform surface treatment of recessed portions at risk of fouling paint.
After each of the above procedures, thermal treatment follows for surface hardening.