EP 1506816 A1 20050216 - Laval nozzle for thermal or kinetical spraying
Title (en)
Laval nozzle for thermal or kinetical spraying
Title (de)
Lavaldüse für thermisches oder kinetisches Spritzen
Title (fr)
Buse de Laval pour la pulvérisation thermique et cinétique
Publication
Application
Priority
- EP 04010236 A 20040429
- DE 10319481 A 20030430
- EP 04008360 A 20040406
Abstract (en)
The Laval nozzle has a convergent and a divergent section. At least part of the divergent section has a bell-shaped contour, resulting in and outlet velocity of more than 2.5. The contour is formed to provide a parallel jet nozzle. The full length of the nozzle is between 60mm and 300mm, pref. between 100mm and 200mm, and the cross section of the nozzle neck is 3-25mm 2, pref. 5-10mm 2. The expansion ratio is between 1and 25, and the critical outlet velocity ratio is between 2.5 and 5, pref. between 2.5 and 4. The nozzle contour is specially adapted for nitrogen, air, or helium. A powder tube ends in the divergent part of the nozzle.
Abstract (de)
Die Erfindung betrifft eine Lavaldüse für das thermische Spritzen und das kinetische Spritzen, insbesondere für das Kaltgasspritzen, mit einem konvergenten und einem divergenten Abschnitt. Zum Erreichen eines besseren Auftragswirkungsgrades besitzt erfindungsgemäß zumindest ein Teil des divergenten Abschnittes eine glockenförmige Kontur (Fig.).
IPC 1-7
IPC 8 full level
B05B 7/14 (2006.01); C23C 24/04 (2006.01)
CPC (source: EP)
B05B 7/162 (2013.01); B05B 7/20 (2013.01); C23C 24/04 (2013.01)
Citation (search report)
- [X] US 5573682 A 19961112 - BEASON JR GEORGE P [US], et al
- [X] US 4300723 A 19811117 - PRASTHOFER WILLIBALD P
- [X] BE 522059 A
- [X] EP 0532134 A1 19930317 - HALDENWANGER TECH KERAMIK GMBH [DE], et al
- [X] PATENT ABSTRACTS OF JAPAN vol. 0113, no. 00 (C - 449) 29 September 1987 (1987-09-29)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1506816 A1 20050216; EP 1506816 B1 20130102; PL 1506816 T3 20130628
DOCDB simple family (application)
EP 04010236 A 20040429; PL 04010236 T 20040429