Patent · US Active

Autofrettage process and autofrettage apparatus

US8408033B2 · kind B2 · utility

1Cited by

4References

7Claims

0Family size

Assignee

MAXIMATOR GMBH · DE

Inventors

Bernd Kampmann · Velbert, DE
Jochen Diemer · Hochspeyer, DE

Key dates

Filing date	Aug 7, 2007
Grant date	Apr 2, 2013
Priority date	—
Expiry date	Mar 24, 2030

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC21D9/08
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

In the autofrettage process, a thick-walled workpiece (2) to undergo autofrettage is positioned in an autofrettage apparatus (1). The interior space (5) of the workpiece (2) is filled with a fluid and closed so as to be pressure-tight. The volume available to the fluid in the interior space (5) of the workpiece (2) is reduced by a displacement piston (19) which is moved into the interior space (5) of the workpiece (2) through a displacement piston opening (6) of the workpiece (2). The pressure is therefore generated in the interior space (5) of the workpiece (2).

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