EP 2980233 A4 20170329 - PROCESS FOR MANUFACTURING MARAGING STEEL AND METHOD FOR REFINING INCLUSIONS
Title (en)
PROCESS FOR MANUFACTURING MARAGING STEEL AND METHOD FOR REFINING INCLUSIONS
Title (de)
VERFAHREN ZUR HERSTELLUNG VON MARTENSITAUSHÄRTENDEM STAHL UND VERFAHREN ZUR VERFEINERUNG VON EINSCHLÜSSEN
Title (fr)
PROCÉDÉ DE FABRICATION D'ACIER MARAGING ET PROCÉDÉ DE RAFFINAGE D'INCLUSIONS
Publication
Application
Priority
- JP 2013068376 A 20130328
- JP 2013206288 A 20131001
- JP 2014057728 W 20140320
Abstract (en)
[origin: EP2980233A1] Provided is a method of producing maraging steel and a method of making Ti-based inclusions finer and making the sizes of Ti-based inclusions that may differ at different locations in the steel ingot more uniform. A method of producing a maraging steel by using vacuum arc remelting that uses a vacuum arc remelting apparatus at least includes a steel ingot production step of producing a steel ingot by melting a consumable electrode made of maraging steel in a crucible of the apparatus, and in this method, the steel ingot production step includes cooling the steel ingot with rare gas introduced between the steel ingot and the crucible.
IPC 8 full level
B22D 27/00 (2006.01); B22D 9/00 (2006.01); B22D 23/10 (2006.01); C21C 7/06 (2006.01); C21C 7/10 (2006.01); C21D 6/00 (2006.01); C22B 9/20 (2006.01); C22C 33/04 (2006.01); C22C 38/00 (2006.01); C22C 38/06 (2006.01); C22C 38/10 (2006.01); C22C 38/12 (2006.01); C22C 38/14 (2006.01)
CPC (source: EP)
B22D 9/003 (2013.01); B22D 23/10 (2013.01); B22D 27/003 (2013.01); C21C 7/06 (2013.01); C21C 7/10 (2013.01); C22B 9/20 (2013.01); C22C 33/04 (2013.01); C22C 38/00 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/004 (2013.01); C22C 38/06 (2013.01); C22C 38/105 (2013.01); C22C 38/12 (2013.01); C22C 38/14 (2013.01); C21D 6/001 (2013.01)
Citation (search report)
- [Y] JP 4692282 B2 20110601
- [Y] DE 10208903 A1 20030918 - ALD VACUUM TECHN AG [DE]
- [Y] US 2005173092 A1 20050811 - KENNEDY RICHARD L [US], et al
- [Y] JP H0929420 A 19970204 - KOBE STEEL LTD
- [Y] US 3353585 A 19671121 - WENTZELL JOSEPH M
- [Y] US 3344840 A 19671003 - BUEHL RUSSELL C, et al
- [A] JP 2004238711 A 20040826 - HITACHI METALS LTD
- See references of WO 2014156942A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2980233 A1 20160203; EP 2980233 A4 20170329; EP 2980233 B1 20190605; EP 2980233 B8 20190717; CN 105308196 A 20160203; CN 105308196 B 20171201; JP 6338156 B2 20180606; JP WO2014156942 A1 20170216; TW 201504454 A 20150201; TW I553128 B 20161011; WO 2014156942 A1 20141002
DOCDB simple family (application)
EP 14773993 A 20140320; CN 201480030673 A 20140320; JP 2014057728 W 20140320; JP 2015508406 A 20140320; TW 103111808 A 20140328