| 摘要 |
<p>The invention provides an improved method and apparatus for laser cutting a thin fragile material using an assist gas to remove molten material and laser-generated debris which is characterized by the high velocity assist gas exerting substantially zero force on the material being cut. The invention also provides an improved form of gas assist laser gas assist nozzle which is shaped to achieve a supersonic gas flow velocity that is used advantageously to effect rapid removal of ejected gas and other materials.</p> |
