Process for the arc welding of nitrogen alloyed steels

US4751366A · kind A · utility

Assignee

• Fried Krupp · DE

Inventors

• Friedhelm Trosken · Bochum, DE
• Reinhard Muller · Baden, CH

Key dates

• Filing date: May 12, 1986
• Grant date: Jun 14, 1988
• Expiry date: May 12, 2006

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B23K35/3086
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

Process for arc fusion welding under atmospheric conditions of a base material which is a nitrogen alloyed steel, in which the bulk share of nitrogen in the steel is above its solubility limit under atmospheric conditions. The nitrogen released during the melting of the base material is confined to the melting bath formed during the welding.