Cold spray nozzle and cold spray device

Patent metadata

Field	Value
Publication number	US-2021164108-A1
Application number	US-201817257937-A
Country	US
Kind code	A1
Filing date	Jul 6, 2018
Priority date	Jul 6, 2018
Publication date	Jun 3, 2021
Grant date	—

Abstract

The nozzle for cold spray (25) used in a cold spray apparatus (2) is configured to include a tubular nozzle main body (252) and a cooling jacket (253) that surrounds the nozzle main body (252) to form a flow path (25e) for refrigerant (R) between the nozzle main body (252) and the cooling jacket (253). The cooling jacket (253) is provided with a seal retaining portion (253c) that retains an O-ring (253b) for the flow path (25e). The seal retaining portion (253c) and the nozzle main body (252) are joined in a socket-and-spigot joint fashion.

First claim

1 .- 5 . (canceled)

6 . A nozzle for cold spray comprising:
a tubular nozzle main body having heat conductivity, the nozzle main body spraying a raw material powder supplied from a cold spray apparatus; and a cooling jacket surrounding the nozzle main body to form a flow path for refrigerant between the nozzle main body and the cooling jacket, the cooling jacket cooling the nozzle main body via the refrigerant flowing through the flow path, the cooling jacket having a seal retaining portion that retains a seal member for the flow path, the seal retaining portion being joined with the nozzle main body in a socket-and-spigot joint fashion.

7 . The nozzle for cold spray according to claim 6 , wherein
a portion of the nozzle main body to be joined with the seal retaining portion in the socket-and-spigot joint fashion has a tapered shape that gradually tapers in a spraying direction of the raw material powder, and a joint part of the seal retaining portion to be joined with the portion of the nozzle main body in the socket-and-spigot joint fashion has a tapered shape along the portion of the nozzle main body.

8 . The nozzle for cold spray according to claim 6 , comprising:
a refrigerant introduction part that introduces the refrigerant from a tip side of the nozzle main body into the flow path provided from the tip side to a rear end side of the nozzle main body; and a refrigerant discharge part that discharges the refrigerant from the rear end side of the nozzle main body.

9 . The nozzle for cold spray according to claim 6 , wherein the cooling jacket is attached to a main body portion of the cold spray apparatus and the nozzle main body is interposed and supported between the cooling jacket and the main body portion.

10 . A cold spray apparatus comprising:
a raw material powder supply means that supplies the raw material powder; a gas supply means that supplies a carrier gas for carrying the raw material powder supplied from the raw material powder supply means and an operation gas for spraying the raw material powder; and a spray means that has the nozzle for cold spray according to claim 6 and sprays the raw material powder carried by the carrier gas from the nozzle for cold spray, the raw material powder being sprayed as a supersonic flow by the operation gas.

Assignees

• Nissan Motor

Inventors

• Fujikawa Masahito
• Matsuyama Hidenobu
• Shiotani Eiji
• Noshi Yoshitsugu
• Shibayama Hirohisa
• Kamada Koukichi
• Okamoto Naoki
• Hamasaki Junichi

Classifications

• B05B7/1626 Primary

  at the moment of mixing · CPC title

• B05B7/16

  incorporating means for heating {or cooling} the material to be sprayed {(spraying by means of explosions B05B7/0006)} · CPC title

• C23C24/00

  Coating starting from inorganic powder (spraying of the coating material in molten state C23C4/00; solid state diffusion C23C8/00 - C23C12/00) · CPC title

• B05B7/1404

  Arrangements for supplying particulate material · CPC title

• F01L3/04

  Coated valve members or valve-seats · CPC title