EP 0004819 B1 19830608 - PROCESS FOR THE PRODUCTION OF FERROUS ALLOYS WITH IMPROVED MECHANICAL PROPERTIES BY THE USE OF LANTHANUM, AND FERROUS ALLOYS OBTAINED BY THIS PROCESS
Title (en)
PROCESS FOR THE PRODUCTION OF FERROUS ALLOYS WITH IMPROVED MECHANICAL PROPERTIES BY THE USE OF LANTHANUM, AND FERROUS ALLOYS OBTAINED BY THIS PROCESS
Publication
Application
Priority
FR 7810254 A 19780406
Abstract (en)
[origin: ES479405A1] This invention relates to the use of lanthanum in the production of iron-based alloys. Accordingly, is provided a method comprising adding at least 0.0001 to about 0.5 to 2 weight percent of lanthanum to said iron-based alloy during its production. Thus the solidification curve is modified, as shown in FIG. 2, thereby reducing or preventing certain defects of said alloys, such as pinholes and cavities in spheroidal graphite cast-irons, carbides in flaky graphite grey-iron the castability, rollability and anisotropy of steels are improved.
IPC 1-7
IPC 8 full level
C21C 1/00 (2006.01); C21C 1/10 (2006.01); C22C 35/00 (2006.01); C22C 37/00 (2006.01); C22C 37/04 (2006.01); C22C 38/00 (2006.01)
CPC (source: EP US)
C21C 1/00 (2013.01 - EP US); C22C 35/00 (2013.01 - EP US); C22C 37/00 (2013.01 - EP US); C22C 37/04 (2013.01 - EP US); C22C 38/002 (2013.01 - EP US)
Designated contracting state (EPC)
BE CH DE GB IT LU NL SE
DOCDB simple family (publication)
EP 0004819 A1 19791017; EP 0004819 B1 19830608; AR 222327 A1 19810515; AT A245979 A 19880115; AU 4603179 A 19791011; AU 528318 B2 19830421; BR 7902098 A 19791127; CA 1155688 A 19831025; DD 143632 A5 19800903; DE 2965601 D1 19830714; ES 479405 A1 19800616; FI 68665 B 19850628; FI 68665 C 19851010; FI 791106 A 19791007; FR 2421948 A1 19791102; FR 2421948 B1 19810306; IN 151970 B 19830917; JP S54136517 A 19791023; MX 6617 E 19850823; NO 152452 B 19850624; NO 152452 C 19851002; NO 791147 L 19791009; PL 214742 A1 19800102; US 4290805 A 19810922; US 4414027 A 19831108; YU 82579 A 19831031; ZA 791569 B 19800430
DOCDB simple family (application)
EP 79400224 A 19790405; AR 27606279 A 19790404; AT 245979 A 19790403; AU 4603179 A 19790411; BR 7902098 A 19790405; CA 324830 A 19790403; DD 21207679 A 19790406; DE 2965601 T 19790405; ES 479405 A 19790406; FI 791106 A 19790403; FR 7810254 A 19780406; IN 220DE1979 A 19790402; JP 4118379 A 19790406; MX 785779 U 19790406; NO 791147 A 19790405; PL 21474279 A 19790406; US 25785981 A 19810427; US 2677879 A 19790403; YU 82579 A 19790406; ZA 791569 A 19790403