| 摘要 |
PURPOSE: To safely inject even a coating material low in flash point at a high temp. by preheating a compressed air in a method for spraying the preheated coating material (lacquer) with the compressed air. CONSTITUTION: In the method for spraying the preheated coating material (lacquer) with the compressed air, the compressed air is preheated as well. As the device therefor, for example, a supply hose 10 for a spraying agent (the coating material or the like) and a supply hose 11 for the compressed air are arranged in parallel to the axis. A transfer connection part 10a heading toward a spraying agent supply source and a transfer connection part 10b heading toward a spray-gun are provided in the supply hose 10. And a transfer connection part 11a heading toward a compressed air supply source and a transfer connection part 11b heading toward the spray-gun are provided in the compressed air supply hose 11. Further a heating coil 12 with an insulating layer 13 is wound in common between each of the transfer connection parts 10a, 10b and the transfer connection part 11a, 11b. The heating coil 12 is energized to heat the spraying agent flowing in the hose 10 and the compressed air flowing in the hose 11. Then the spraying agent is unnecessary to be heated up to a dangerous high temp. |
