Title:
GAS PRESSURE CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/176623
Kind Code:
A1
Abstract:
The present invention provides a gas pressure control device that can precisely control the pressure applied to the surface of molten metal. A gas pressure control device 1 includes a gas generating part 10 that generates nitrogen gas, and a pressure control part 20 that adjusts the pressure of the nitrogen gas generated in the gas generating part 10 and supplies the gas to a low-pressure casting device 50. The pressure control part 20 includes a servo valve 23 that controls the flow rate of the nitrogen gas supplied from a tank 17 and allows the gas to flow toward the low-pressure casting device 50, and a pressure controller 29 that adjusts the degree of opening of the servo valve 23 on the basis of the measured pressure Pm of the nitrogen gas supplied to the low-pressure casting device.
Inventors:
MIYOSHI HIROAKI (JP)
Application Number:
PCT/JP2022/004010
Publication Date:
August 25, 2022
Filing Date:
February 02, 2022
Export Citation:
Assignee:
UBE MACHINERY CORP LTD (JP)
International Classes:
B22D18/04; B22D18/08; B22D46/00; G05D16/20
Domestic Patent References:
| WO2008132991A1 | 2008-11-06 |
Foreign References:
| JPS62169214A | 1987-07-25 | |||
| US20170266720A1 | 2017-09-21 | |||
| JPH03264150A | 1991-11-25 | |||
| JP2016043356A | 2016-04-04 |
Attorney, Agent or Firm:
OBA, Mitsuru et al. (JP)
Download PDF:
Previous Patent: FAILURE PREDICTION SYSTEM, FAILURE PREDICTION METHOD, AND FAILURE PREDICTION PROGRAM
Next Patent: POWER CONVERSION SYSTEM
Next Patent: POWER CONVERSION SYSTEM