Title:
アセチレンガス濃度推定装置、アセチレンガス適量推定装置および該装置を備える真空浸炭装置
Document Type and Number:
Japanese Patent JP6853230
Kind Code:
B2
Abstract:
To provide an acetylene gas concentration estimation device capable of simply estimating concentration of acetylene gas, and a vacuum carburization device with the device.SOLUTION: An acetylene gas concentration estimation device 20 comprises: an acetylene gas decomposition part 21 for decomposing acetylene gas to a carbon component and hydrogen gas; a first sensor 22 arranged on an upstream side of the acetylene gas decomposition part and measuring hydrogen gas concentration on an upstream side of the acetylene gas decomposition part; and a second sensor 23 arranged on a downstream side of the acetylene gas decomposition part and measuring the hydrogen gas concentration on the downstream side of the acetylene gas decomposition part. A vacuum carburization device 1 comprises a vacuum carburization chamber 6 for performing vacuum carburization by acetylene gas, and the acetylene gas concentration estimation device 20. The acetylene gas concentration estimation device is arranged on a gas exhaust passage 17 communicated with the vacuum carburization chamber and reducing pressure of the vacuum carburization chamber.SELECTED DRAWING: Figure 2
More Like This:
Inventors:
Faithful Tachibana
Application Number:
JP2018212357A
Publication Date:
March 31, 2021
Filing Date:
November 12, 2018
Export Citation:
Assignee:
Chugai Furnace Industry Co., Ltd.
International Classes:
C23C8/20; C21D1/06; C21D1/76; F27D7/06
Domestic Patent References:
| JP2017171999A | ||||
| JP2013001639A | ||||
| JP2001192204A | ||||
| JP2008208395A | ||||
| JP2011026658A | ||||
| JP50096410A | ||||
| JP2015078416A | ||||
| JP2002212702A |
Foreign References:
| US20080277029 |
Attorney, Agent or Firm:
Takuji Yamada
Yasushi Ohata
Yukino Okunishi
Yasushi Ohata
Yukino Okunishi