• Patent Title: Continuous method for producing capillaries made of nonferrous alloys
  • Application No.: US17257970
    Application Date: 2019-04-10
  • Publication No.: US11717870B2
    Publication Date: 2023-08-08
  • Inventor: Mark Pasotti
  • Applicant: FEINROHREN S.P.A.
  • Applicant Address: IT Passirano
  • Assignee: FEINROHREN S.P.A.
  • Current Assignee: FEINROHREN S.P.A.
  • Current Assignee Address: IT Passirano
  • Agency: Cantor Colburn LLP
  • Priority: IT 2018000006938 2018.07.05
  • International Application: PCT/EP2019/059124 2019.04.10
  • International Announcement: WO2020/007514A 2020.01.09
  • Date entered country: 2021-01-05
  • Main IPC: B21C23/00
  • IPC: B21C23/00 F25B41/37 B21C1/22
Continuous method for producing capillaries made of nonferrous alloys
Abstract:
A method for producing capillaries from nonferrous alloys, in particular of Al, which includes the continuous cold rotary extrusion of a blank having a solid cross-section, obtained by casting, in order to produce a tube having a hollow cross-section. The deformation of the blank to be extruded is achieved only by using friction force. The method further includes at least one step of cold drawing of the extruded tube in order to reduce its diameter to the diameters corresponding to a capillary.
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