Brazing material and brazed products manufactured therewith

US7455811B2 · kind B2 · utility

Assignee

• ALFA LAVAL CORPORATE AB · SE

Inventor

• Per Sjödin · Lund, SE

Key dates

• Filing date: Jun 3, 2002
• Grant date: Nov 25, 2008
• Expiry date: Jun 3, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/12979
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

An iron based brazing material for joining objects by brazing represents an alloy, which apart from iron contains approximately 9-30% Cr, approximately 0-8% Mn, approximately 0-25% Ni, 0-1% N, a maximum of 7% Mo, less than about 6% Si, approximately 0-2% B and/or about 0-15% P, all stated in weight percent, which addition of Si, P, and B in combination or separately lowers the liquidus temperature, that is the temperature at which the brazing material is completely melted. A brazed product is manufactured by brazing of iron based objects with an iron based brazing material which is alloyed with a liquidus lowering element as Si, P and B.