Fabrication
Powder-coating
Powder-coating of the highest quality …
through a modern, efficient facility for the coating of galvanized and non-galvanized steel and aluminium.
By connecting to the existing hot dip galvanizing plant BRISTA is now in a position to offer its customers first-class corrosion protection as a duplex system (hot dip galvanizing and coating). This system is characterized by very high durability and extreme stability. In addition, coating of this nature also has excellent decorative properties.
The high level of competence within the field of hot dip galvanizing is complemented and extended by the powder coating. BRISTA customers have the opportunity to improve the corrosion protection and aesthetics of their products with only one supplier. Customers can be assisted at all times in selecting the necessary and/or most appropriate surface treatment with comprehensive technical know-how.
With its fully automatic cabin and an additional 2-man manual cabin, BRISTA is able to respond flexibly and rapidly to customer specified color changes.
| Parts in the following dimensions can be coated in the BRISTA powder coating plant: | |
| Length: | 8.000 mm |
| Height: | 2.700 mm |
| Width: | 800 mm |
| Work piece measures: | |
| Length: | 7.700 mm |
| Height: | 2.500 mm |
| Width: | 600 mm |
| Weight: | up to 1,000 kg |
Quality begins with the pre-treatment of materials!
The goods to be powder coated are transported on the crossbars of a power & free conveyor. A residue-free, perfectly clean and smooth surface is the most important prerequisite for optimal coating. And BRISTA offers two variants!
On one hand, with stainless steel shot blasting (so-called "sweeping"), which is an alternative to chemical pre-treatment. This procedure is used specifically for hot dip galvanized parts in order to roughen the surface for better adhesion of the powder coat. On the other hand, BRISTA offers the chemical four-chamber pre-treatment system with subsequent chrome-free passivation in order to increase the corrosion resistance of the surface and enhance the coating's adhesion properties. Of course both variations can be combined for optimum results.
After the pretreatment, all products go through the detention water drying process, because only an absolutely dry material surface ensures a perfect coating. Additionally, this heat treatment with the galvanised goods makes the ´outgassing` of the fresh galvanisation possible.
After pre-treatment all of the products go through a drying process, as only an absolutely dry surface ensures a perfect coating. Additionally, with galvanized goods this heat treatment facilitates the so-called "outgassing" of the fresh zinc coating.
The actual coating occurs in the fully automatic or, if necessary, in the manual powder cabin. Electrostatic powder coating involves the material to be coated being positively charged. An electric field is established and the negatively charged powder particles are drawn by the positive field of the material surface, where they collect evenly. The powder cabin is equipped with a cyclone and an absolute filter. This suction facility is configured so as to prevent powder particles from entering the hall.
After the coating process the goods are transported through a furnace, in which the powder particles melt at a temperature of around 180° C to create a layer of coating.
The powder coatings used are environmentally-friendly and do not contain any hazardous substances. All production processes are non-polluting and have no effect on the employees. The waste water from the chemical pre-treatment is prepared internally via an evaporator and recycled in new baths - because environmentally-friendly production is also a main priority at BRISTA!
We hope we have been able to awake your interest and would be delighted to hear from you. Contact us.
