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1. 发明授权

US4857698A Laser perforating process and article produced therein 失效
标题翻译：激光穿孔工艺及其制造的物品
公开(公告)号：US4857698A
公开(公告)日：1989-08-15
申请号：US171800
申请日：1988-03-22
申请人： Kenneth R. Perun
发明人： Kenneth R. Perun
IPC分类号： B23K26/38 , B64C23/00
CPC分类号： B64C23/00 , B23K26/382 , B23K26/40 , B23K2203/14 , B23K2203/50 , B64C2230/22 , Y02T50/166
摘要： A process for perforating a metal sheet with clean holes of substantially uniform size and shape comprises placing a suitable transparent backing tape, such as an adhesive polyethylene tape, on one surface of the metal sheet. The assembly is placed in a fixture, a laser beam generated by a pulsed Nd:YAG laser is impinged on the opposite surface of the metal sheet, and the laser parameters are chosen to control the laser beam to penetrate the metal sheet and form a plurality of small tapered holes therein without penetrating the tape. A clean metal surface results around the holes with no recast structure or dross present in and around the holes. A drilled titanium sheet of the above type is particularly suited for utility as an outer wing leading edge of an aircraft and which provides good laminar flow control efficiency.
摘要翻译：用具有基本均匀尺寸和形状的清洁孔穿孔金属片的方法包括在金属片的一个表面上放置合适的透明背衬带，例如粘合剂聚乙烯带。将组件放置在夹具中，由脉冲Nd：YAG激光器产生的激光束撞击在金属片的相对表面上，并且选择激光参数以控制激光束穿透金属片并形成多个的小锥形孔，而不会穿透胶带。清洁的金属表面在孔周围产生，在孔内和周围不存在重铸结构或浮渣。上述类型的钻孔钛片特别适用于作为飞行器的外翼前缘的实用性，并且其提供良好的层流控制效率。

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