Title:
CARBON CONCENTRATION DISTRIBUTION ANALYSIS METHOD
Document Type and Number:
WIPO Patent Application WO/2024/090229
Kind Code:
A1
Abstract:
Provided is a method for more easily ensuring the accuracy when analyzing the carbon concentration distribution in accordance with the position in a steel material to be subjected to a carburization treatment. Specifically, this method is for analyzing the carbon concentration distribution in accordance with the position in a steel material to be subjected to a carburization treatment. When analyzing the carbon concentration distribution using a diffusion equation, at least one of the diffusion coefficient, the mobility, and the diffusion flux, of carbon, included in the diffusion equation is multiplied by a correction coefficient. The correction coefficient is set so as to satisfy a condition in which an error between the carbon concentration distribution analyzed from the diffusion equation and a previously measured carbon concentration distribution becomes equal to or less than a threshold value.
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Inventors:
MUTO YASUMASA (JP)
Application Number:
PCT/JP2023/037118
Publication Date:
May 02, 2024
Filing Date:
October 12, 2023
Export Citation:
Assignee:
SANYO SPECIAL STEEL CO LTD (JP)
International Classes:
C23C8/22; C21D1/06; C22C38/00; C22C38/22; G01N33/2022; G01N33/204
Domestic Patent References:
| WO1994009175A1 | 1994-04-28 | |||
| WO2019182140A1 | 2019-09-26 |
Foreign References:
| JP2016172898A | 2016-09-29 |
Other References:
TODO. SHOJI EL AL.: "Development of Application Technology for Vacuum Carburizing", SHINNITTETSU SUMIKIN GIHO, no. 406, 2016, pages 13 - 18
MORITA, TOSHIYUKI ET AL.: "Effects of the shapes of heat-treated parts in vacuum carburizing", CURRENT ADVANCES IN MATERIALS AND PROCESSES : REPORT OF THE ISIJ MEETING, no. 18, 1 September 2005 (2005-09-01)
MORITA, TOSHIYUKI ET AL.: "Effect of steel components on excessively carburized edge part in vacuum carburization (First report: Simulation analysis)", CURRENT ADVANCES IN MATERIALS AND PROCESSES : REPORT OF THE ISIJ MEETING, no. 19, 1 September 2006 (2006-09-01)
MORITA, TOSHIYUKI ET AL.: "Effects of the shapes of heat-treated parts in vacuum carburizing", CURRENT ADVANCES IN MATERIALS AND PROCESSES : REPORT OF THE ISIJ MEETING, no. 18, 1 September 2005 (2005-09-01)
MORITA, TOSHIYUKI ET AL.: "Effect of steel components on excessively carburized edge part in vacuum carburization (First report: Simulation analysis)", CURRENT ADVANCES IN MATERIALS AND PROCESSES : REPORT OF THE ISIJ MEETING, no. 19, 1 September 2006 (2006-09-01)
Attorney, Agent or Firm:
TAKAMURA Masaharu et al. (JP)
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