Method for increasing the strength of components

US9015939B2 · kind B2 · utility

Assignee

• MASCHINENFABRIK ALFING KESSLER GMBH

Inventors

• Alfons Reeb · Aalen, DE
• Jochen Schmidt · Trochtelfingen, DE

Key dates

• Filing date: Dec 18, 2009
• Grant date: Apr 28, 2015
• Expiry date: Jul 22, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49726
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

In a method for increasing the strength of a component subjected to torsional and flexural stress, in particular of a crankshaft, in a first step essentially the entire component is provided with a nitriding layer. In a second step, the nitriding layer is at least partially removed in at least one highly stressed region of the component by means of cutting machining, and, in a third step, the at least one highly stressed component region freed of the nitriding layer is mechanically strain-hardened.