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1. (WO2018083438) METHOD AND APPARATUS FOR CREATING CHANNELS IN WORKPIECES

Pub. No.:    WO/2018/083438    International Application No.:    PCT/GB2017/053069
Publication Date: Sat May 12 01:59:59 CEST 2018 International Filing Date: Thu Oct 12 01:59:59 CEST 2017
IPC: B23K 20/12
B23B 47/34
Applicants: THE WELDING INSTITUTE
Inventors: GANDRA, Joao
Title: METHOD AND APPARATUS FOR CREATING CHANNELS IN WORKPIECES
Abstract:
A friction stir channelling tool comprises a probe (2) for inserting into a workpiece or workpieces. The probe (2) extends from, and is rotatably mounted in, a bore (14) of a shoulder (3), the probe surface being formed so as to cause plasticised workpiece material to be moved towards the shoulder and into the bore of the shoulder upon rotation of the probe while the shoulder is in contact with the workpiece. The shoulder (3) has at least one vent (4) extending from outside the shoulder to the bore (14) whereby the plasticised material can exit the bore through the vent.