The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 06, 2012
Filed:
Oct. 22, 2008
Harshad V. Sheth, Rancho Palos Verdes, CA (US);
James N. Cordea, Largo, FL (US);
Harshad V. Sheth, Rancho Palos Verdes, CA (US);
James N. Cordea, Largo, FL (US);
Shultz Steel Company, South Gate, CA (US);
Abstract
A lean alloy steel and roll shells made of same are provided. The lean alloy steel has improved properties in imparting high productivity and long service life for roll shells (or roll caster shells) utilized in the direct casting of molten materials (such as molten aluminum) to strips. The lean alloy steel includes iron (Fe) alloyed with carbon (C), chromium (Cr), molybdenum (Mo), vanadium (V), manganese (Mn), nickel (Ni), phosphorus (P), sulfur (S), silicon (Si), and/or niobium (Nb). The roll shells made from the heat treated lean alloy steel have high resistance to surface heat checking due to its very high yield strengths at molten aluminum temperatures (made, e.g., possible with its high carbide content), and have high casting speeds because of its high thermal conductivity (made, e.g., possible with its lean alloy composition).