Method of applying a metallic guide band to a thin-walled projectile body

US4797985A · kind A · utility

Assignee

• Rheinmetall GmbH · DE

Inventors

• Jurgen Prochnow
• Jorg Peters · Düsseldorf, DE
• Ulrich Theis · Mülheim, DE
• Klaus D. Karius · Jüchen, DE

Key dates

• Filing date: Nov 6, 1986
• Grant date: Jan 17, 1989
• Expiry date: Nov 6, 2006

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49982
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A method of applying a metallic guide band to the body of a projectile having particularly thin walls comprises making fine particles plastically deformable by heating thereof, and spraying said heated particles at high speed onto a surface section of the projectile body until a desired layer thickness of the guide band is attained. A projectile body having a circumferential guide band is produced by the method of the invention. The thin-walled projectile body has a boundary layer region on its exterior which may be roughened and/or deoxidized. The boundary layer region is formed by an intermediate layer which may be composed of molybdenum, nickel aluminide or nickel oxide and itself has a roughened boundary layer region on its exterior. This results in a particularly intimate physical bond with the particles of alloy of the guide band. The alloy is preferably of a CuZn85/15 type and has a porosity of up to 5 volume percent.