Ruag Munition

Ruag Components

Kurt Steinhoff

Peter J Uggowitzer

Markus Speidel

Matthias Schupfer

Gian-Carlo Gullo

Guiding means being arranged on a surface area of a shell are made of high purity nickel by build-up welding. This avoids a drag-in of copper into a gun barrel foreseen for the launch of a shell. A production of the guiding means in the build-up welding process allows a reliable fixing of the guiding means directly onto the shell body.

Shell with a shell body and a process for the preparation of radially protruding guiding means on a shell body

A process for the production of a material made of a metal alloy for subsequent forming of the material in the semi-solid state, provides that the metal alloy (X) is brought to a starting temperature that is above the liquidus. An additive is added which is capable of reducing an interfacial surface energy between the solid phase and the liquid phase after the metal alloy has been mixed with the additive and transformed into the semi-solid state. The volume fraction of the additive (Z) is selected in such a way that, in the semi-solid material at a liquid phase fraction (f ) of 15% to 75%, the grain size (D) and the degree of skeletization (f C ) during a holding time (t) of more than 15 minutes remain essentially constant in order to retain the formability of a suspension.

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Burglen, Switzerland

Kurt Steinhoff