Title:
IRON CASTING AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2023/176791
Kind Code:
A1
Abstract:
The present invention provides a method for producing an iron casting by performing a heat treatment on an object to be heat treated, the object being obtained by casting an austenitic casting material. The heat treatment comprises: a first retention step in which the object to be heat treated is retained at a first retention temperature of 850°C to 1250°C; and a first cooling step in which the object to be heat treated is cooled to a first cooling end temperature of -150°C to 150°C after the first retention step. The first retention step includes retention of the object to be heat treated for a first retention time of 0.25 hour to 100 hours.
Inventors:
UMETANI TAKUO (JP)
Application Number:
PCT/JP2023/009691
Publication Date:
September 21, 2023
Filing Date:
March 13, 2023
Export Citation:
Assignee:
HINODE LTD (JP)
International Classes:
C21D5/00; C21D6/00; C22C37/00; C22C37/04; C22C38/00; C22C38/08; C22C38/10
Foreign References:
| JPS62284039A | 1987-12-09 | |||
| JPH04141545A | 1992-05-15 | |||
| JP2000119793A | 2000-04-25 | |||
| JP2003138336A | 2003-05-14 | |||
| JP2019173110A | 2019-10-10 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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