Experimental and numerical analysis of marking approach for sintered light alloy components

Abstract

The weight reduction of components is one of the most important topics in the automotive and the aircraft industry. Sintered light metal alloys combine a low specific weight with a production process with a high utilisation of material. This paper describes a process integrated marking approach for sintered components to protect them from being copied. Herein spherical particles are placed inside at predefined positions, and different materials are used for particles and powder. The readout of the marking is based on the different physical properties of these materials. Experiments to show the feasibility of the approach were carried out. Additionally a numerical simulation was used to predict the influence of the particles on the components density distribution.

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“…Before the actual press or sinter operation, locally defined, foreign particles are inserted in the metal powder in the form of a binary coded matrix. Due to the different densities and magnetisability of the inserted foreign particles, the internally stored data matrix can subsequently be read by measuring the eddy current signal as well as via roentgen or ultra-sound technology [15]. In Fig.…”

Manufacturing Method of PM Components with Integrated Information Storage

“…For the numerical description of the sintering process constitutive equations were used which are defined directly by a flow law which is linear with respect to the tensions. Due to the limited space, we refer to [3,4] for the results of the simulation calculations.…”