| 摘要 |
PURPOSE:To obtain a wide and homogeneous reformed layer at a time by scanning the surface of a cylindrical structure with plural laser beams at the time of reforming the surface by laser glazing. CONSTITUTION:Plural laser beams 1 are passed through a beam guide 6, and turned by a set of the focusing lenses 3 respectively offset at the tip. The respective beam heating regions are overlapped to some extent on the surface of a sample 2. The beam guide 6 is rotated, and moved in the axial direction by one cycle for each revolution. As a result, a relatively continuous amorphous layer 4 is formed. Accordingly, a uniform amorphous film can be formed on the inner surface of a pipeline by this method. In addition, similar treatment can be applied on the outer surface of the pipeline by changing the direction of the laser beams. |
