Method for spraying a coating on a disk

Abstract From the Canadian patent

In a method to spray a coating of uniform thickness onto a spinning disk, a point is located spacially on the spinning disk at a distance from the center equal to about half of a spray stripe width plus half of the disk radius. The spray stream is moved in a ring-shaped pattern centered at the point and having a perimeter defined at the stripe mid-line. The perimeter diameter is equal to the disk radius. The spray stream is moved around the pattern with successive speeds, namely a base speed for a semicircular outer zone at the periphery of the disk and a smaller inner zone at the center, and lesser speeds for intermediate zones. For a concentrically contoured disk between, the above cycles …