ISSUE 1/2015

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Uwe Richter, Svenja Arendholz, Ronald Miksche, Mathias Röllig, Christiane Maierhofer, Klaus Eigenfeld Porosity detection in high pressure die castings Part 1 – Microscopic investigations of pores in HPD castings

Ever larger high pressure die castings (HPDC) with ever thinner walls raise the issue of castings defects. Properties of components are often strongly influenced by inner porosity. In the case of high pressure die castings, shrinkage and gas porosity occur. Two possibilities of characterizing porosity – by microscopy and active thermography – are dealt with in two articles. In this article, the microscopic investigations are presented. In a second article, first the feasibility of thermographic detection will be discussed based on simulations and, thereafter, the experimental determination of porosity with active thermography will be described.

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