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Heat Transfer to the Die Wall During High Pressure Die Casting of Two Aluminium Alloys, Part 1

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Abstract

During cyclic production of high-pressure die casting (HPDC) parts, the process parameters influence the integrity of the product. It is therefore vital to have knowledge and control of the fluid flow and heat transfer at the metal-die interface. Temperature measurements in the runner wall during HPDC of two aluminium alloys, AlSi4 and AlSi9, were recorded. In these investigations it was found that the biscuit size, solidification behaviour of the alloy and pressure influenced the measured temperature profiles.

The results from these measurements are divided into two parts. The effects of solidification behaviour, pressure and biscuit size as measured on the temperature profile in the runner wall are presented and discussed in the present article, Part 1. Microstructural investigations of the metal in the runner system have also been done and compared with the temperature readings to verify the solidification behaviour. A link between the measured temperature profiles, microstructure and a calculated heat transfer coefficient will be presented in Part 2 that will be submitted for publication at a later date.

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Authors and Affiliations

  1. Dept. of Material Science and Engineering, NTNU, Trondheim, Norway

    Raimo Helenius & Otto Lohne

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  1. Raimo Helenius
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  2. Otto Lohne
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Helenius, R., Lohne, O. Heat Transfer to the Die Wall During High Pressure Die Casting of Two Aluminium Alloys, Part 1. Inter Metalcast 9, 51–59 (2015). https://doi.org/10.1007/BF03355615

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  • DOI: https://doi.org/10.1007/BF03355615

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