RETAINING PRE-CONSTRUCTION PRIMERS DURING SHIPBUILDING

摘要

Priming of carbon steel plates, beams, angle irons, and other shapes before their fabrication into parts of industrial and marine structures has progressed its earliest stages of fabrication to the current block stage, or module process. The earliest practices used the full thickness of both organic and irorganic primers intended to be the first coat in multi-coat systems. It was recognized that these full coat primers impeded the progress of welding and led to porosities in the welds, compromising the integrity of the entire coating system. Extensive damage during the fabrication process led to a need for quicker processes with fewer intercoat adhesion problems.