Forming a perforate membrane by laser drilling and a subsequent electro-polishing step
    3.
    发明申请
    Forming a perforate membrane by laser drilling and a subsequent electro-polishing step 有权
    通过激光钻孔和随后的电抛光步骤形成穿孔膜

    公开(公告)号:US20050006359A1

    公开(公告)日:2005-01-13

    申请号:US10489327

    申请日:2002-09-06

    申请人: David Blakey

    发明人: David Blakey

    摘要: A method of forming a perforate membrane (1) is disclosed for use in a liquid transport device. The membrane has at least plural nozzles (10) formed therethrough. Each of those nozzles has a throat portion (12) opening at opposite end through opposite surface (2′) of the perforate membrane and a smoothly curved outwardly diverging portion (11) extending from the first end of the throat portion to the first surface (2) of the perforate membrane. Laser energy is applied selectively to the first surface (2) of the membrane in the form of a pulsed, focused beam to form the nozzles (10) and thereafter the first surface (2) of the membrane and the surface of the diverging portion (11) of the nozzles (10) are electro-polished to remove surface imperfections. The electro-polishing is controlled so as to remove material from the surface of the diverging portion (11) of the nozzles to a depth less than the length of the throat portion (12).

    摘要翻译: 公开了一种形成穿孔膜(1)的方法,用于液体输送装置。 膜具有穿过其中形成的至少多个喷嘴(10)。 这些喷嘴中的每一个具有通过穿孔膜的相对表面(2')的相对端开口的喉部(12)和从喉部的第一端延伸到第一表面的平滑弯曲的向外发散部分(11) 2)穿孔膜。 激光能量以脉冲聚焦光束的形式选择性地施加到膜的第一表面(2)以形成喷嘴(10),此后,膜的第一表面(2)和发散部分的表面 11)喷嘴(10)被电抛光以去除表面缺陷。 控制电抛光以便从喷嘴的发散部分(11)的表面移除至小于喉部(12)的长度的深度的深度。