Patent · US Expired

Method of producing fine-grain sheet or fine-grain plate of austenitic steels

US4086105A · kind A · utility

8Cited by

3References

8Claims

0Family size

Assignee

Vereinigte Osterreichische Eisen- und Stahlwerke - Alpine Montan Aktiengesellschaft · AT

Inventors

Max Mayrhofer · Linz, AT
Walter Taschner · Linz, AT

Key dates

Filing date	Feb 1, 1977
Grant date	Apr 25, 1978
Priority date	—
Expiry date	Feb 1, 1997

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB21B1/026
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

In a method of producing fine-grain sheet or plate, in particular fine-grain plate with a thickness of more than 50 mm, of austenitic steels by hot rolling billets or slabs in a number of passes, the mean velocity of the reduction in thickness (v in mm/min) achieved in a plurality of subsequent passes in dependence upon the ferrite content (f in %) of the steels is chosen in a manner that up to a ferrite content of 3.5%, the mean velocity of the reduction in thickness is more than 150 mm/min, and at a ferrite content of more than 3.5%, it is above a value given by the relationship v = 3.8 f.sup.2 - 60 f + 315, the deformation carried out in this manner amounting to at least 30%.

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