Global Patent Index - EP 0816522 B1

EP 0816522 B1 2001-02-28 - Ferroalloy for the inoculation of spheroidal graphite cast iron

Title (en)

Ferroalloy for the inoculation of spheroidal graphite cast iron

Title (de)

Ferrolegierung für die Impfung von Kugelgraphitgusseisen

Title (fr)

Ferroalliage pour l'inoculation des fontes à graphite sphéroidal

Publication

EP 0816522 B1 (FR)

Application

EP 97420097 A

Priority

  • FR 9608151 A
  • FR 9702040 A

Abstract (en)

[origin: EP0816522A1] An alloy which is added to the melt when making spheroidal graphite cast iron comprises (wt.%) 0.005-3% rare earths, 0.005-3% bismuth, lead and/or antimony, 0.3-3%, preferably 0.5-2%, calcium, 0.3-3%, preferably 0.5-1.5%, magnesium and the balance silicon and iron in a ratio of Si to Fe of >2, preferably >2.5. The alloy may be added to the melt in the form of wire wool.

IPC 1-7 (main, further and additional classification)

C22C 35/00; C21C 1/10

IPC 8 full level (invention and additional information)

C21C 1/10 (2006.01); C22C 35/00 (2006.01)

CPC (invention and additional information)

C21C 1/105 (2013.01); C22C 35/005 (2013.01)

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 0816522 A1 19980107; EP 0816522 B1 20010228; AT 199410 T 20010315; DE 69704137 D1 20010405; DE 69704137 T2 20010830; DK 0816522 T3 20010903; ES 2155976 T3 20010601; FR 2750143 A1 19971226; FR 2750143 B1 19980814; PT 816522 E 20010830; US 5733502 A 19980331

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