Patent ID: 8957346
Filing Date: 2015-02-17
Classification: B05B,C23C

Abstract:
1. A thermal spraying apparatus that forms an arc spray coating on a surface of a cylinder bore, wherein: the thermal spraying apparatus at least comprises rotation control means, movement control means, and a spray gun that is rotated by the rotation control means and that has at one end thereof a first discharge opening facing a direction that is orthogonal to the movement direction of the spray gun and that further has a second discharge opening facing a direction that is orthogonal to the direction that the first discharge opening faces; in the spray gun, a third discharge opening for discharging fume adhesion prevention air that faces the same direction as the first discharge opening is provided at a position that is located above and in a separate vertical plane than the first discharge opening and is located forward of the first discharge opening in the direction of air discharged from the first discharge opening; atomizing air is discharged from the first discharge opening and auxiliary air is discharged from the second discharge opening; and when the first discharge opening moves within the cylinder bore in the direction of the axial center thereof from the lower end to the upper end of the cylinder bore by means of the movement control means while the spray gun is in a rotating posture by means of the rotation control means, the fume adhesion prevention air is blown towards the bore surface in synchrony with the spraying of spray particles to the cylinder bore surface.