C - Chemistry – Metallurgy – 21 – C
Patent
C - Chemistry, Metallurgy
21
C
53/102, 22/188
C21C 7/00 (2006.01) B22D 11/11 (2006.01) B22D 27/20 (2006.01)
Patent
CA 1148747
Abstract A filled tubular article is disclosed for controlled dissolution in molten metal for making boron treated steel. The filled tubular article includes an elongate conduit of ferrous material, an elongate member of primarily aluminum material located within the conduit, and a particulate master composition including ferroboron particulate material, ferrotitanium particulate material, and ferrovanadium particulate material contained within the conduit. A method of casting boron treated steel includes introducing that filled tubular article below the surface of the molten steel in a mold and maintaining the range of the added chemical elements aluminum, boron, titanium and vanadium at preselected weight proportions of the amount of molten steel delivered to the mold.
368268
Caterpillar Tractor Co.
Kirby Eades Gale Baker
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