Powder Coating Galvanized Steel Sheet

Bubble problems powder coating galvanized steel 2004.

Powder coating galvanized steel sheet.

Recently we have a requirement of powder coating ral 9006 jotun make on hot dip galvanized tanks of size app 1 5 mtrs x 1 mtr x 1 mtr. However astm d7803 includes a pre heating step to drive off air and moisture from the prepared galvanized surface prior to powder coating. 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. Galvanized steel with a powder coated surface.

We are facing problems in powder coating. The galvanized coating protects the base steel supplying cathodic and barrier protection. When paint and galvanized steel are used together the corrosion control provided is superior to either system used alone. 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.

Make sure the coater has had previous experience with powder over galvanized steel. Polyester powder coating over hot dip galvanized steel provides a high grade architectural finish to steel items with excellent atmospheric weathering characteristics the powder coated product ensures maximum durability for steel components which will generally provide 50 year rust free life spans in most architectural applications. Check for experience with galvanized as a substrate and see what the powder coater can offer for a warranty. Hot dip galvanizing is coating of metallic zinc bonded with steel to form a source of corrosion protection for steel.

This process can be difficult to perform properly if quality control procedures are not in place and can result in uneven coating and pinhole spots where the coating does not adhere. Powder coating galvanized steel for architectural applications is covered at present by en 13438. En 15773 industrial application of powder organic coatings to hot dip galvanized or sheradised steel articles duplex systems specifications recommendations and guidelines provides additional information concerning communication within. Even so there are still some problems during this application.

A duplex system is simply painting or powder coating steel that has been hot dip galvanized after fabrication. 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.