| 摘要 |
This invention is intended to provide a method for treating rolled steel for a general structure so that the coating formed on it after a shotblasting can be prevented from being separated from it. The method comprises the following steps: a step for spraying dry and high-pressure air onto the rolled steel to remove extraneous substances attached to the rolled steel, a step for heating the rolled steel, from which the extraneous substances are removed, up to a predetermined temperature, a step for shot blasting the rolled steel, which is heated up to a predetermined temperature, a step for spraying dry air onto the rolled steel, which is shot blasted, to remove moisture and fine particles of salt, a step for spraying a coating material onto the rolled steel, from which the moisture and the fine particles of salt are removed, and a step for spraying hot air onto the rolled steel, which is coated by the coating material, to dry the coating material. |
