Controlling heat balance in hot aluminum extrusion by additive manufactured extrusion dies with conformal cooling channels
| العنوان: | Controlling heat balance in hot aluminum extrusion by additive manufactured extrusion dies with conformal cooling channels |
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| المؤلفون: | Nooman Ben Khalifa, Andreas Jäger, Ramona Hölker, A. Erman Tekkaya |
| المصدر: | Hölker, R, Jäger, A, Ben Khalifa, N & Tekkaya, A E 2013, ' Controlling heat balance in hot aluminum extrusion by additive manufactured extrusion dies with conformal cooling channels ' International Journal of Precision Engineering and Manufacturing, vol 14, no. 8, pp. 1487-1493 . DOI: 10.1007/s12541-013-0200-1 Hölker, R, Jäger, A, Ben Khalifa, N & Tekkaya, A E 2013, ' Controlling heat balance in hot aluminum extrusion by additive manufactured extrusion dies with conformal cooling channels ', International Journal of Precision Engineering and Manufacturing, vol. 14, no. 8, pp. 1487-1493 . https://doi.org/10.1007/s12541-013-0200-1 |
| سنة النشر: | 2013 |
| مصطلحات موضوعية: | business.product_category, Materials science, Additive manufacturing, Mechanical Engineering, Compressed air, Metallurgy, Hot aluminum extrusion, Industrial and Manufacturing Engineering, Conformal cooling, Coolant, Engineering, Thermocouple, Heat exchanger, Die (manufacturing), Extrusion, Electrical and Electronic Engineering, Selective laser melting, business, Rapid tooling, Overheating (electricity) |
| الوصف: | To prevent overheating of the workpiece material, an extrusion die with integrated local cooling was designed and manufactured by selective laser melting (SLM) as an additive manufacturing technology. The major advantage of SLM is the geometric freedom of the components that can be manufactured, which has been used to produce a die with integrated multidirectional channels for a cooling medium and the integration of thermocouples for temperature measurement. To analyze the influence of the die cooling on the heat balance in hot extrusion, extrusion trials at different ram speeds and billet preheating temperatures with and without applying die cooling were performed. Compressed air was used as coolant. At lower ram speeds, a significant reduction of the profile's exit temperature in hot aluminum extrusion was achieved without causing an excessive rising of the extrusion force. At higher production speeds, surface defects in the shape of stripes of rough surfaces occurred but could be prevented by applying internal die cooling. Due to focusing of the heat exchange on the area of the die bearings, only a little influence of the cooling on the microstructure can be observed. |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f20e9d61f2f747e4db65026805746c17 http://fox.leuphana.de/portal/de/publications/controlling-heat-balance-in-hot-aluminum-extrusion-by-additive-manufactured-extrusion-dies-with-conformal-cooling-channels(b9a4a13d-a211-46fd-afda-1fa8419a2154).html |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....f20e9d61f2f747e4db65026805746c17 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |