Procedure for hardening at least one surface of a wall of a component and device for its execution

US6821363B1 · kind B1 · utility

Assignee

• Elotherm GmbH · DE

Inventors

• Hans-Jürgen Leissner · Remscheid, DE
• Peter Schulte · Richmond, US
• Waldemar Gezarzick · Remscheid, DE
• Richard Dyksik · Remscheid, DE

Key dates

• Filing date: Jun 24, 2002
• Grant date: Nov 23, 2004
• Expiry date: Jun 24, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/25
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A procedure for hardening at least one surface (S, L) of a wall (W) of a component (T), in which the surface to be hardened (S, L) is inductively heated with at least one inductor (2), in which liquid is filled into a gap (P) between the surface to be hardened (S, L) and the inductor (2) while heating the surface to be hardened (S, L), in which the side (AS) of the wall (W) opposite the side (IS) of the wall (W) provided with the surfaces to be hardened (S, L) is sprayed with liquid while heating the surface to be hardened (S, L), and in which at least one liquid jet (KI) is aimed at a zone (RZ) of the wall (W) that is adjacent to the surface to be hardened (S, L), and to be precluded from heating by the inductor (2). The procedure according to the invention makes it possible to tailor the hardening of at least one surface to the respective requirements, even on the walls of complexly shaped components with a small wall thickness.