An even layer of polyester powder coating is applied to the recently galvanized steel and cured in a stove at 180 c. Galvanized steel versus powder coatings for outdoor environments thursday april 13 2017 chipping fading and corrosion are common concerns when deliberating over the use of galvanized steel coating or powder coating for outdoor furnishings such as handrails and guardrails bike racks playground equipment and park benches.
Powder coating over galvanizing presents it s own set of problems to the powder coater but nothing we can t overcome easily with a little knowledge on how to do it correctly.
Powder coating galvanised steel. Powder coatings are generally applied to metals including steel or iron making galvanised steel the perfect candidate. For engineers and architects looking to create high quality painted steel components there s no better method than the powder coating over hot dip process. One of the most durable protective coatings for steel is provided by applying a polyester powder coating over hot dip galvanized steel to provide a high grade.
Cure the powder coating. Powder coating pre galvanized erw tube 2006. Galvanized steel with a powder coated surface.
While galvanizing has a reputation for durability against the elements today s powder coatings provide a worthy match. Some of our customer s have recently encountered problems powder coating. Apply the powder to the galvanized part in accordance with the manufacturers instructions.
The powder is typically sprayed onto the galvanized surface. I am a quality engineer with a uk tube manufacturer. A good practice is to powder coat a sample piece of galvanized steel to check the overall coating appearance before coating the final piece.
If your property is looking a little worse for wear then you should consider repairs on your exterior and even interior cladding. The second step in producing powder coated galvanized steel is the application of the powder coat to the galvanized part. For any application powder coating offers distinct advantages over galvanizing.
We want to powder coat galvanized steel which is the best quality of galvanized steel to be used and why. Powder coating on hot dip galvanized steel. Powder coatings must be applied within 12 hours of the galvanizing process.
For many years designers had to rely on using galvanization or paint alone to protect their steel components. Krishnamurthy controls switchgear india. One of these effective coating methods is powder coating galvanised steel which is a two step coating process that provides a protective barrier against adverse weather.
Powder coatings produce a seamless finish with the added benefit of protection against external elements often keeping surfaces rust free for periods of up to 50 years. One of the most durable protective coatings for steel is provided by applying a polyester powder coating over hot dip galvanized steel to provide a high grade architectural finish to steel items.