基本信息:
- 专利标题： GAS-ASSISTED LASER MACHINING
- 专利标题（中）：气体辅助激光加工
- 申请号：PCT/US2012/028943 申请日：2012-03-13
- 公开(公告)号：WO2012129012A1 公开(公告)日：2012-09-27
- 发明人： ELHADJ, Selim , GERAGHTY, Paul , JOHNSON, Michael A. , MATTHEWS, Manyalibo Joseph , YANG, Steven T.
- 申请人： LAWRENCE LIVERMORE NATIONAL SECURITY, LLC , ELHADJ, Selim , GERAGHTY, Paul , JOHNSON, Michael A. , MATTHEWS, Manyalibo Joseph , YANG, Steven T.
- 申请人地址： 2300 First Street, Suite 204 Livermore, California 94550 US
- 专利权人： LAWRENCE LIVERMORE NATIONAL SECURITY, LLC,ELHADJ, Selim,GERAGHTY, Paul,JOHNSON, Michael A.,MATTHEWS, Manyalibo Joseph,YANG, Steven T.
- 当前专利权人： LAWRENCE LIVERMORE NATIONAL SECURITY, LLC,ELHADJ, Selim,GERAGHTY, Paul,JOHNSON, Michael A.,MATTHEWS, Manyalibo Joseph,YANG, Steven T.
- 当前专利权人地址： 2300 First Street, Suite 204 Livermore, California 94550 US
- 代理机构： BASARKAR, Girish M. et al.
- 优先权： US61/466,382 20110322
- 主分类号： B44C1/22
- IPC分类号： B44C1/22
摘要：
A system of gas-assisted laser machining is provided. The system includes a nozzle that delivers a gas jet at the surface of the work piece and a laser source that can focus a laser beam on the surface of the work piece. A mixture of a reactive gas and a carrier gas is provided via the gas jet. The reactive gas reacts with the material and helps to enhance the evaporation rate of the material and at the same time helps reduce the temperature at which the enhanced evaporation rate can be achieved. Use of reactive gases also helps to reduce the residual stress on the material, minimize material flow during evaporation, reduce re-deposited material, and eliminate rims on the pit structures formed as a result of the material removal.
摘要（中）：
提供了一种气辅激光加工系统。 该系统包括在工件表面处输送气体喷嘴的喷嘴和可将激光束聚焦在工件表面上的激光源。 通过气体射流提供反应气体和载气的混合物。 反应气体与材料反应，有助于提高材料的蒸发速率，同时有助于降低提高蒸发速率的温度。 反应气体的使用还有助于减少材料上的残余应力，使蒸发期间的材料流动最小化，减少重新沉积的材料，并消除由于材料去除而形成的凹坑结构上的边缘。