Title:
PLASMA THERMAL SPRAY APPARATUS
Document Type and Number:
WIPO Patent Application WO/2016/151826
Kind Code:
A1
Abstract:
This plasma thermal spray apparatus comprises: a main torch for introducing a main plasma gas along a central axis, the main torch comprising a main anode having a material delivery tube for delivering a material supply gas containing a thermal spray material along the central axis; and a plurality of subtorches having a central axis that intersects the central axis of the main anode and disposed circumferentially apart from one another on a circumference around the central axis of the main anode, the subtorches comprising a subcathode. The plasma thermal spray apparatus forms a coating of the thermal spray material by: delivering the material supply gas through the material delivery tube to a plasma flame generated along the central axis of the main anode from plasma arcs formed between the main anode and the subcathodes, the main plasma gas introduced along the central axis of the main anode, and a subplasma gas introduced along the central axes of the subcathodes towards the central axis of the main anode; and melting and spraying the thermal spray material onto a base material. The plasma thermal spray apparatus is provided with supply rate control units for controlling the supply rate of the subplasma gas.
Inventors:
KITAMURA TOMOAKI (JP)
TANAKA MAKOTO (JP)
ISHIMARU HIDEO (JP)
SAKIYAMA SATOSHI (JP)
TANAKA MAKOTO (JP)
ISHIMARU HIDEO (JP)
SAKIYAMA SATOSHI (JP)
Application Number:
PCT/JP2015/059272
Publication Date:
September 29, 2016
Filing Date:
March 25, 2015
Export Citation:
Assignee:
CHUGOKU ELECTRIC POWER (JP)
UNIV YAMAGUCHI (JP)
UNIV YAMAGUCHI (JP)
International Classes:
C23C4/12; B05B7/22; B05B7/26; H05H1/42; H05H1/44
Foreign References:
| JP2002231498A | 2002-08-16 | |||
| JPH05339699A | 1993-12-21 | |||
| JPH0584455A | 1993-04-06 | |||
| JP2005525465A | 2005-08-25 |
Other References:
JAPAN THERMAL SPRAYING SOCIETY, YOSHA HANDBOOK, 25 October 1994 (1994-10-25), pages 137 - 141
JAPAN THERMAL SPRAYING SOCIETY, YOSHA BENRAN, 31 May 1964 (1964-05-31), pages 644 - 647
ATSUSHI HASUI: "Yosha Kogaku", 20 May 1969 (1969-05-20), pages 176 - 177
JAPAN THERMAL SPRAYING SOCIETY, YOSHA BENRAN, 31 May 1964 (1964-05-31), pages 644 - 647
ATSUSHI HASUI: "Yosha Kogaku", 20 May 1969 (1969-05-20), pages 176 - 177
Attorney, Agent or Firm:
ISSHIKI & CO. (JP)
All international patent business corporation (JP)
All international patent business corporation (JP)
Download PDF: