EP 0076027 A2 19830406 - Powder metallurgy articles.
Title (en)
Powder metallurgy articles.
Title (de)
Nach pulvermetallurgischem Verfahren hergestellte Formkörper.
Title (fr)
Objets produits à partir de métaux en poudre.
Publication
Application
Priority
US 30604081 A 19810928
Abstract (en)
A powder metallurgy article, e.g., a hot working roll or tool or a high toughness cold work tool such as a shear blade or slitter knife, formed from compacted prealloyed powder of an alloy consiting of, in weight percent, manganese 0.2 to 1.5, silicon 2 max., chromium 1.5 to 6, molybdenum 0.50 to 6, sulfur 0.30 max., vanadium 7 to 10, carbon expressed by the formula (.25 minimum, .40 maximum + .16 x percent vanadium), optical carbide forming elements such as tungsten and niobium in amounts up to 5 percent (with the corresponding stoichiometric carbon required for balance) may partially replace vanadium, optional cobalt additions may be included for heat resistance and balance iron and incidental impurities; the article is characterised by a fully martensitic structure with essentially no carbon in the steel matrix in excess of the carbon necessary to combine with the vanadium present to form vanadium carbides and to ensure said fully martensitic structure.
IPC 1-7
IPC 8 full level
B21B 1/00 (2006.01); B21B 27/00 (2006.01); C22C 33/02 (2006.01); C22C 38/00 (2006.01); C22C 38/24 (2006.01)
CPC (source: EP KR)
B21B 27/00 (2013.01 - EP); B22F 7/00 (2013.01 - KR); C22C 33/0278 (2013.01 - EP)
Designated contracting state (EPC)
AT BE DE FR GB IT LU NL SE
DOCDB simple family (publication)
EP 0076027 A2 19830406; EP 0076027 A3 19840222; EP 0076027 B1 19861112; AT E23567 T1 19861115; CA 1191039 A 19850730; DE 3274261 D1 19870102; DK 158795 B 19900716; DK 158795 C 19901224; DK 231882 A 19830329; ES 513486 A0 19830401; ES 8305424 A1 19830401; IN 158518 B 19861129; JP H0140904 B2 19890901; JP S5858255 A 19830406; KR 840001456 A 19840507; MX 159525 A 19890627
DOCDB simple family (application)
EP 82304064 A 19820802; AT 82304064 T 19820802; CA 400811 A 19820408; DE 3274261 T 19820802; DK 231882 A 19820524; ES 513486 A 19820625; IN 567DE1982 A 19820726; JP 12523582 A 19820720; KR 820004373 A 19820928; MX 19402582 A 19820816