EP 1882755 A4 20110511 - HIGH SILICON STAINLESS STEEL, SPRING MANUFACTURED BY USING SAME AS RAW MATERIAL, AND METHOD FOR PRODUCING HIGH SILICON STAINLESS STEEL
Title (en)
HIGH SILICON STAINLESS STEEL, SPRING MANUFACTURED BY USING SAME AS RAW MATERIAL, AND METHOD FOR PRODUCING HIGH SILICON STAINLESS STEEL
Title (de)
SILICIUMREICHER NICHTROSTENDER STAHL, UNTER VERWENDUNG DIESES STAHLS ALS AUSGANGSSTOFF HERGESTELLTE FEDER UND VERFAHREN ZUR HERSTELLUNG VON SILICIUMREICHEM NICHTROSTENDEM STAHL
Title (fr)
ACIER INOXYDABLE A FORTE TENEUR EN SILICIUM, RESSORT FABRIQUE EN UTILISANT CELUI-CI EN TANT QUE MATIERE PREMIERE, ET PROCEDE DE PRODUCTION DE L'ACIER INOXYDABLE A FORTE TENEUR EN SILICIUM
Publication
Application
Priority
JP 2005009072 W 20050518
Abstract (en)
[origin: EP1882755A1] There are provided a high silicon stainless steel with a high elongation at break, a spring made thereof, and a process for manufacturing the high silicon stainless steel. The high silicon stainless steel of the invention is characterized in : mainly comprising a microstructure with a grain size of 15 µm or less and having an elongation at break of 12% or higher; mainly comprising a microstructure with a grain size of 7 µm or less and having an elongation at break of 14 % or higher; or having an elongation at break of 7% or higher after thermal aging. The process of the invention for manufacturing the high silicon stainless steel is characterized in comprising a load application step for applying an impact load and/or a static load to the high silicon stainless steel or the master alloy, wherein the surface temperature is in a temperature range of 950°C or below and not so low as to break the high silicon stainless steel or the master alloy. The high silicon stainless steel with a high elongation at break can provide a long-life spring.
IPC 8 full level
B21J 5/00 (2006.01); C21D 8/00 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01)
CPC (source: EP US)
B21J 1/04 (2013.01 - EP US); C21D 9/02 (2013.01 - EP US); C22C 38/34 (2013.01 - EP US); C22C 38/40 (2013.01 - EP US)
Citation (search report)
- [XA] JP H0463247 A 19920228 - NISSHIN STEEL CO LTD
- [XA] US 4755233 A 19880705 - BARALIS GIOVANNI [IT], et al
- [XA] US 4295900 A 19811020 - MALMGREN NILS-GUNNAR, et al
- [A] US 3689325 A 19720905 - HAYDEN HOWARD WAYNE JR, et al
- [A] JP H0797623 A 19950411 - NIPPON SHIRIKOROI KOGYO KK, et al
- [A] JP H1099930 A 19980421 - DAIDO STEEL CO LTD
- See references of WO 2006123408A1
Citation (examination)
JP H0693388 A 19940405 - NIPPON KOKAN KK, et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1882755 A1 20080130; EP 1882755 A4 20110511; AU 2005331823 A1 20061123; AU 2005331823 B2 20110721; CA 2608600 A1 20061123; CN 101228287 A 20080723; CN 101228287 B 20100616; US 2009016925 A1 20090115; WO 2006123408 A1 20061123
DOCDB simple family (application)
EP 05741487 A 20050518; AU 2005331823 A 20050518; CA 2608600 A 20050518; CN 200580051118 A 20050518; JP 2005009072 W 20050518; US 59034005 A 20050518