Preparation Method of Coil Coating Test Sample

According to the requirements of HGT 3830-2006 for the preparation of coil coatings: the coating film preparation of coil coatings requires the use of stainless steel wire-wound scraping rod scraping method. And select a suitable wire bar scraping coating to prepare the test plate, control the dry coating thickness of the primer between 5-7 microns, the dry coating thickness of the back paint between 7-10 microns, and the dry coating thickness of the top coat between 15-7 microns. between 18 microns. Other coating thicknesses can be negotiated with relevant parties. The measurement of dry film thickness shall be carried out by any method specified in GB/T 13452.2-1992.

Common stainless steel wire-wound scraping rods include American RDS scraping rods, British RK scraping rods and some domestic brands. In comparison, the imported wire-wound scraper is more accurate during the coating process, less prone to wire breakage, and has a longer lifespan.