Fine Grain Size and High Hardness Cast Steel Alloys Products and Method of Making the Same
OwnerJohn Baron Wonginventor
Life of this patent
Estimating the term…
Abstract
High hardness cast steel alloy products and methods of making the same are provided. The methods includes preparing a molten mass consisting essentially of, by weight %, about 0.05% to about 3.0% C, about 0.005% to about 1.0% Si, about 0.01% to about 1.0% Mn, about 0.01% to about 0.3% Nb, about 0.01% to about 0.3% Ni, about 0.04% to about 1.0% Mo, about 1% to about 16.0% Cr and a balance essentially iron, incidental elements and impurities, at a temperature ranging from about 1400° C. to about 1700° C.; and forming the cast steel alloy product from the molten mass.
Claims8
A method of making a cast steel alloy product, the method comprises:
- preparing a molten mass comprising, by weight %, about 0.05% to about 3.0% C, about 0.005% to about 1.0% Si, about 0.01% to about 1.0% Mn, about 0.01% to about 0.3% Nb, about 0.01% to about 0.3% Ni, about 0.04% to about 1.0% Mo, about 1% to about 16.0% Cr, and a balance essentially iron, incidental elements and impurities, at a temperature within a range of about 1400° C. to about 1700° C.;
- slowly air cooling the molten mass for two days;
- and
- forming the cast steel alloy product from the molten mass.
A high hardness cast steel alloy product comprising a high hardness of 63 HRC from surface to core and a microstructure with an ASTM grain size of 14.
Dependencies are inferred from the claim text.