EP 3787837 B1 20221012 - FLUID JET PROCESSING
Title (en)
FLUID JET PROCESSING
Title (de)
FLÜSSIGKEITSSTRAHLVERARBEITUNG
Title (fr)
TRAITEMENT DE JET DE FLUIDE
Publication
Application
Priority
- GB 201806475 A 20180420
- GB 2019051069 W 20190415
Abstract (en)
[origin: GB2573012A] A fluid jet treatment process and apparatus in which a jet 8j of fluid 8 is directed onto a surface of a workpiece 5, the jet 8j including regions 78 of fluid having different density and/or viscosity properties. Regions of reduced fluid density may be formed by entraining micro-bubbles 78 within the jet 8j, or by entraining micro-droplets of a different fluid in the jet 8j. Ultrasonic vibrations may be applied to the treatment fluid using an actuator 75, vibrator plate 74 and concave concentrator plate 76 to produce micro-bubbles 78 by cavitation. The micro-bubbles 78 may alternatively be formed by injection through an injection needle (90 fig. 2B) or by intermittently boiling the treatment fluid 8 by localized heating of the surface of a metallic bead 93 using an induction coil 95 or a laser 98. The micro-bubbles may travel along the jet and impinge on the surface of the workpiece. The fluid may contain abrasive particles of similar size to the micro-bubbles. The process may polish or clean the surface of the workpiece 5 which may be an additively manufactured component such as an artificial joint.
IPC 8 full level
B24C 5/04 (2006.01)
CPC (source: EP GB)
B08B 3/02 (2013.01 - EP GB); B24C 1/04 (2013.01 - EP); B24C 3/02 (2013.01 - EP); B24C 5/005 (2013.01 - EP GB); B24C 5/02 (2013.01 - EP); B24C 5/04 (2013.01 - GB); B24C 7/0007 (2013.01 - EP); B08B 2203/0288 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
GB 201806475 D0 20180606; GB 2573012 A 20191023; EP 3787837 A1 20210310; EP 3787837 B1 20221012; TW 201945127 A 20191201; TW I818980 B 20231021; WO 2019202299 A1 20191024
DOCDB simple family (application)
GB 201806475 A 20180420; EP 19718840 A 20190415; GB 2019051069 W 20190415; TW 108113548 A 20190418