US2015284830A1PendingUtilityA1

Inoculant alloy for thick cast-iron parts

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Assignee: FERROPEMPriority: Nov 14, 2012Filed: Nov 12, 2013Published: Oct 8, 2015
Est. expiryNov 14, 2032(~6.3 yrs left)· nominal 20-yr term from priority
Inventors:Aurelie FayMourad ToumiThomas MargariaDaniel Berruex
C21C 1/10C21C 1/08C22C 37/10C22C 28/00C22C 29/18B22D 27/20C21C 1/105C22C 33/0278C22C 33/08B22D 19/14C22C 33/0242C22C 33/0264
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Claims

Abstract

The present invention relates to an inoculant alloy for treating thick ferrosilicon-based cast-iron parts, containing between 0.005 and 3% by weight of Rare Earths, characterized in that it also contains between 0.2 and 2% by weight of Antimony.

Claims

exact text as granted — not AI-modified
1 . An inoculant alloy for treating thick ferrosilicon-based cast-iron parts, containing between 0.005 and 3% by weight of Rare Earths, characterized in that it also contains between 0.2 and 2% by weight of Antimony. 
     
     
         2 . The inoculant alloy according to  claim 1 , characterized in that it also comprises magnesium and constitutes a nodularizer alloy. 
     
     
         3 . The inoculant alloy according to  claim 1 , characterized in that it does not contain magnesium. 
     
     
         4 . The inoculant alloy according to  claim 1 , characterized in that the ratio of rare earths to antimony is comprised between 0.9 and 2.2. 
     
     
         5 . The inoculant alloy according to  claim 1 , characterized in that the proportion by weight of antimony is higher than 0.3%. 
     
     
         6 . The inoculant alloy according to  claim 1 , characterized in that the proportion by weight of antimony is lower than 1.5%. 
     
     
         7 . The inoculant alloy according to  claim 1 , characterized in that the rare earths comprise Lanthanum. 
     
     
         8 . The inoculant alloy according to  claim 1 , characterized in that the proportion by weight of rare earths is higher than 0.2%. 
     
     
         9 . The inoculant alloy according to  claim 1 , characterized in that the proportion by weight of rare earths is lower than 1.2%. 
     
     
         10 . A use of an inoculant according to  claim 1 , characterized in that said inoculant is introduced in the form of a powder. 
     
     
         11 . The use of an inoculant according to  claim 1 , characterized in that said inoculant is introduced in the form of a solid insert placed in a casting mold. 
     
     
         12 . The use of an inoculant according to  claim 1  for manufacturing cast-iron parts having portions with thicknesses larger than 6 mm. 
     
     
         13 . The inoculant alloy according to  claim 5 , characterized in that the proportion by weight of antimony is higher than 0.5%. 
     
     
         14 . The inoculant alloy according to  claim 5 , characterized in that the proportion by weight of antimony is higher than 0.8%. 
     
     
         15 . The inoculant alloy according to  claim 6 , characterized in that the proportion by weight of antimony is lower than 1.3%. 
     
     
         16 . The inoculant alloy according to  claim 7 , characterized in that the rare earths comprise only lanthanum. 
     
     
         17 . The inoculant alloy according to  claim 8 , characterized in that the proportion by weight of rare earths is higher than 0.3%. 
     
     
         18 . The inoculant alloy according to  claim 9 , characterized in that the proportion by weight of rare earths is lower than 1%. 
     
     
         19 . The use of an inoculant according to  claim 12  for manufacturing cast-iron parts having portions with thicknesses larger than 20 mm. 
     
     
         20 . The use of an inoculant according to  claim 12  for manufacturing cast-iron parts having portions with thicknesses larger than 50 mm.

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