Title:
THERMAL SPRAYING METHOD
Document Type and Number:
WIPO Patent Application WO/2020/235493
Kind Code:
A1
Abstract:
This invention provides a thermal spraying method with which it is possible to control decreases in adhesion, wear in delivery pipes, and occurrences of flashback when performing a large volume injection. This thermal spraying method is for forming a refractory composition by injecting and combusting a mixture in which a raw powder material containing a refractory powder and a flammable powder is mixed with an oxidizing carrier gas. The flow rate of the carrier gas discharged from a discharge nozzle 32 of an ejector 30 is 30 (Nm3/h) or greater, the flow speed of the carrier gas discharged from the discharge nozzle 32 is 602-1180 (m/s), the flow speed of the mixture in a channel of a delivery pipe 33 is 63-283 (m/s), and the ratio of the cross-sectional area of the injection port 41 of an injection means 40 and the straight portion of the discharge pipe 33 (cross-sectional area of the injection port of the injection means/cross-sectional area of the straight portion of the discharge pipe) is 1-4.
Inventors:
HONDA KAZUHIRO (JP)
MATSUNOBU KENICHI (JP)
MATSUNOBU KENICHI (JP)
Application Number:
PCT/JP2020/019480
Publication Date:
November 26, 2020
Filing Date:
May 15, 2020
Export Citation:
Assignee:
KROSAKIHARIMA CORP (JP)
International Classes:
B05D1/08; B05B7/20; C23C4/11; C23C4/12
Foreign References:
| JP2015113490A | 2015-06-22 | |||
| JP2017019699A | 2017-01-26 | |||
| JPH0260802B2 | 1990-12-18 |
Attorney, Agent or Firm:
EIWA PATENT FIRM (JP)
Download PDF:
Previous Patent: LINEAR MOTOR AND LINEAR COMPRESSOR USING THIS LINEAR MOTOR, AND AIR SUSPENSION USING THE LINEAR COMP...
Next Patent: SHOE
Next Patent: SHOE