| 摘要 |
<p>A welding device comprising at least one beam-reflecting side element (9, 10) arranged so as to reflect at least a part of a high energy density beam (7) towards a region in which a weld joint is to be generated in a piece of material (4), wherein said beam-reflecting side element (9, 10) protrudes from a surface of said piece of material (4).</p> |
