Patent · US Expired

Method and apparatus for treatment of metallic workpieces

US7255829B1 · kind B1 · utility

8Cited by

1References

14Claims

0Family size

Assignee

Ipsen International, GmbH · US

Inventors

Wolfgang Peter · Bruchsal, DE
Bernd Edenhofer · Kleve, DE
Jan-Willem Bouwman · Nettetal, DE

Key dates

Filing date	Aug 30, 2000
Grant date	Aug 14, 2007
Priority date	—
Expiry date	Nov 8, 2023

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC21D1/613
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A method and an apparatus for the thermal treatment of metallic workpieces with which gas quenching can be obtained that is low in distortion, even for workpieces with an undulating shape or workpieces that are projectingly stackable are provided. In accordance with the method, after being heated the workpieces are cooled in a quenching chamber with a quenching gas, whereby the quenching gas is intentionally caused to flow around the workpieces by means of guide channels that have a closed lateral surface and that enclose the workpieces along the direction of flow of the quenching gas. The apparatus comprises a quenching chamber in which the workpieces can be cooled with a quenching gas, and wherein guide channels are provided to ensure that the quenching gas flows around the workpieces, the guide channels having a closed lateral surface and enclosing the workpieces along the direction of flow of the quenching gas.

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