| 摘要 |
According to an embodiment of the present invention, a spraying peening method for a welded part, so as to improve performance by spraying powder to a welded part formed by arc welding a first member and a second member which are a steel sheet after a portion of the first member and the second member is stacked to be overlapped, comprises: a power spraying step wherein power is sprayed from a spraying nozzle while maintaining a spraying angle in a predetermined range which a normal line direction and a spraying direction of the spraying nozzle form. The normal line direction is vertical to a contact line surface of the first member in a point aimed by the spraying nozzle, thereby improving performance of the welded part. |
