Patent ID: 9074276
Filing Date: 2015-07-07
Classification: C23C,H05H

Abstract:
1. A thermally sprayed film forming method comprising: linearly driving a spraying gun having a thermal spraying nozzle along a path of travel between an open first end and an opposing second end of an inner surface of a cylinder of a workpiece wherein said workpiece is a cylinder block of an engine, and said inner surface of said cylinder is a cylinder bore inner surface of the cylinder block; and applying a plurality of layers of the thermally sprayed film to the inner surface of the cylinder by rotationally spraying a molten material towards the inner surface of the cylinder from the thermal spraying nozzle while linearly driving the spraying gun and then allowing said molten material to solidify attached to said inner surface wherein, when all layers of the plurality of layers are applied, a prescribed film thickness of the plurality of layers is formed that is a total thickness of all layers of the plurality of layers, by: