Patent · US Active

High friction rolling of thin metal strip

US11542567B2 · kind B2 · utility

0Cited by

4References

22Claims

0Family size

Assignee

Nucor Corporation · US

Inventors

Tao Wang · Germantown, US
Kishlay MISHRA · Memphis, US
Jeffery Edward Keffer · Blytheville, US

Key dates

Filing date	Jul 21, 2020
Grant date	Jan 3, 2023
Priority date	—
Expiry date	Feb 9, 2041

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC22C38/60
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

Described herein are thin metal strips having hot rolled exterior side surfaces characterized as being primarily or substantially free of all prior austenite grain boundaries, or at least primarily or substantially free of all prior austenite grain boundaries, and including elongated surface structure. As a result, because the prior austenite grain boundaries are not primarily or substantially present, all such prior austenite grain boundaries are not susceptible to grain boundary etching due to acid etching or pickling. In particular examples, the thin metal strips undergo hot rolling performed with a coefficient of friction equal to or greater than 0.20 with or without use of lubrication.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.