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Class Information
Number: 420/30
Name: Alloys or metallic compositions > Ferrous (i.e., iron base) > 1.7 percent or more carbon containing > 2.7 percent or more carbon equivalent containing (i.e., cast iron) > Processes > Adding rare earth or alkaline earth metal
Description: Process which includes a step of adding one or more of scandium, yttrium, a lantanide metal, calcium, strontium or barium to the alloy or metallic composition.










Patents under this class:

Patent Number Title Of Patent Date Issued
8318045 Radiation shielding members including nano-particles as a radiation shielding material and method for preparing the same Nov. 27, 2012
7824605 As-cast carbidic ductile iron Nov. 2, 2010
7727308 Non-evaporable getter alloys for hydrogen sorption Jun. 1, 2010
6793707 Inoculation filter Sep. 21, 2004
6508981 High temperature oxidation resistant ductile iron Jan. 21, 2003
6177045 Composition and method for inoculating low sulphur grey iron Jan. 23, 2001
5639420 Method of manufacturing compacted graphite cast iron Jun. 17, 1997
5580401 Gray cast iron system for scroll machines Dec. 3, 1996
4806157 Process for producing compacted graphite iron castings Feb. 21, 1989
4671820 Composite calcium clads for deoxidation and desulfurization from molten steels Jun. 9, 1987
4666516 Gray cast iron inoculant May. 19, 1987
4581203 Process for the manufacture of ferrosilicon or silicon alloys containing strontium Apr. 8, 1986
4560409 Metal bearing graphitic carbons Dec. 24, 1985
4517019 Method for continuously treating molten metal May. 14, 1985
4432793 Ferroalloy for the treatment of cast metals and process Feb. 21, 1984
4430123 Production of vermicular graphite cast iron Feb. 7, 1984
4363661 Method for increasing mechanical properties in ductile iron by alloy additions Dec. 14, 1982
4362562 Method for taking samples from pig-iron melts Dec. 7, 1982
4292075 Slow fade inocculant and a process for the inocculation of melted cast iron Sep. 29, 1981
4290805 Method for obtaining iron-based alloys allowing in particular their mechanical properties to be improved by the use of lanthanum, and iron-based alloys obtained by the said method Sep. 22, 1981
4260417 Batch desulfurization in a coreless induction furnace Apr. 7, 1981
4246026 Manufacturing process of vermicular graphic cast-irons through double modification Jan. 20, 1981
4227924 Process for the production of vermicular cast iron Oct. 14, 1980
4213780 Method of introducing calcium and calcium alloys into a vessel of molten metal Jul. 22, 1980
4208207 Carrier body and method for introduction of a reaction agent into metal melts Jun. 17, 1980
4162917 Method and composition for treating molten ferrous metals to produce nodular iron Jul. 31, 1979
4162159 Cast iron modifier and method of application thereof Jul. 24, 1979
4155753 Process for producing silicon-containing ferro alloys May. 22, 1979
4150979 Method of continuous production of nodular cast iron Apr. 24, 1979
4134757 Method of treating molten metal Jan. 16, 1979
4108637 Sheathed wire feeding of alloy and inoculant materials Aug. 22, 1978
4107393 Inoculation article Aug. 15, 1978
4042377 Method of and composition for the desulfurization of steel Aug. 16, 1977
3984233 Ferrous metal network impregnated with rare earth metals Oct. 5, 1976
3977868 Nitrogen containing additive for strengthening cast iron Aug. 31, 1976











 
 
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