Title (en)

Plasma spray apparatus

Title (de)

Plasmasprühvorrichtung

Title (fr)

Appareil de pulvérisation à plasma

Publication

EP 1657322 A3 20080227 (EN)

Application

EP 05256848 A 20051104

Priority

• US 98204104 A 20041104
• US 19013605 A 20050726
• US 25386805 A 20051019

Abstract (en)

[origin: EP1657322A2] A method and apparatus for plasma spray coating a portion of a workpiece (24), such as a gas turbine compressor blade, without masking any portions thereof. The apparatus includes a plasma apparatus with an anode (16), cathode (18), and an arc generator for generating an electric arc (20) between the anode (16) and cathode (18). An arc gas emitter injects inert gas through the electric arc (20). The electric arc (20) is operable for ionizing the gas to create a plasma gas stream (21). A powder injector nozzle extends through the anode (16) and injects powdered material (34) into the plasma stream (21) for transfer to the workpiece (24).

IPC 8 full level

B05B 7/22 (2006.01); C23C 4/00 (2006.01); C23C 4/12 (2006.01)

CPC (source: EP)

B05B 7/226 (2013.01)

Citation (search report)

• [XY] RU 2039613 C1 19950720 - SIB AEROKOSMICHESKAYA AKADEMIY [SU]
• [X] US 5770273 A 19980623 - OFFER HENRY PETER [US], et al
• [XY] JP S61210170 A 19860918 - HITACHI SHIPBUILDING ENG CO
• [XY] US 4199104 A 19800422 - HOUBEN JOHAN M [NL]
• [Y] US 5233153 A 19930803 - COATS ALMA L [US]
• [XY] EP 0342388 A2 19891123 - BROWNING JAMES A
• [XY] US 2003185965 A1 20031002 - LIN SHYH-NUNG [US], et al
• [E] EP 1652952 A1 20060503 - UNITED TECHNOLOGIES CORP [US]
• [A] WO 0188218 A1 20011122 - EUROMAT GES FUER WERKSTOFFTECH [DE], et al

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA HR MK YU

DOCDB simple family (publication)

EP 1657322 A2 20060517; EP 1657322 A3 20080227; EP 1657322 B1 20131030

DOCDB simple family (application)

EP 05256848 A 20051104