Water-borne KORRO AQUA 
is ideal for use in welding

Water-borne KORRO AQUA is ideal for use in welding

The welding tests of water-borne KORRO AQUA 2741 Prefabrication Primer were carried out in a welding laboratory at Helsinki Metropolia University of Applied Sciences and the quality of a weld was studied in cooperation with Rautaruukki Raahe's laboratory.

A welding project studied the use of water-borne KORRO AQUA 2741 Prefabrication Primer in welding and the manageability of a welded seam. The results were compared with traditional solvent-based KORRO E epoxy- and KORRO SS zinc silicate prefabrication primers. Besides the welding-related properties of the paint, the project studied the quality and appearance of a weld, the formation of combustion gases and overcoatability. In the course of the project it was also checked whether the welded area can easily be cleaned with a wire brush.

According to the test results, KORRO AQUA 2741 Prefabrication Primer is well-suited for welding. The amount of welding spatter and the porosity of the weld are low. A welded seam can easily be cleaned with a wire brush. The formation of combustion gases is at a typical level for organic paints and it can be managed by local exhaust and good ventilation.