Reduced energy consumption by using streamlined gating systems

Autor: Niels Skat Tiedje, Soen Skov-Hansen

Publikováno v: China Foundry, Vol 5, Iss 4, Pp 272-279 (2008)

In foundries a lot of effort is done to minimize energy consumption in the production to reduce costs and hence increase the competitiveness. At the same time the foundries must live up to the increased demands for high quality castings.Traditional g

Externí odkaz: https://doaj.org/article/d1a0985115074c1688abb46f6b2b13ae

Unraveling compacted graphite evolution during solidification of cast iron using in-situ synchrotron X-ray tomography

Autor: Tim Wigger, Chaoling Xu, Jean-Claude Grivel, Jesper Henri Hattel, Tito Andriollo, Zhixuan Gong, Robert C. Atwood, M.A. Azeem, Søren Fæster, Niels Skat Tiedje, Peter D. Lee, Samuel J. Clark

Publikováno v: Xu, C, Wigger, T, Azeem, M A, Andriollo, T, Fæster, S, Clark, S, Gong, Z, Atwood, R, Grivel, J-C, Hattel, J H, Lee, P D & Tiedje, N S 2021, ' Unraveling compacted graphite evolution during solidification of cast iron using in-situ synchrotron X-ray tomography ', Carbon, vol. 184, pp. 799-810 . https://doi.org/10.1016/j.carbon.2021.08.069

In spite of many years of research, the physical phenomena leading to the evolution of compacted graphite (CG) during solidification is still not fully understood. In particular, it is unknown how highly branched CG aggregates form and evolve in the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c93c42481de715327f054f5008e22dee
https://orbit.dtu.dk/en/publications/c753c068-4cce-4df4-9e77-75eb8f467e5e

Creep of the Matrix During Coalescence and Overgrowth of Graphite Precipitates in a High-Silicon Spheroidal Graphite Iron Submitted to Thermal Cycling in the Ferritic Domain

Autor: Tito Andriollo, Jacques Lacaze, Niels Skat Tiedje

Publikováno v: Metallurgical and Materials Transactions A
Metallurgical and Materials Transactions A, Springer Verlag/ASM International, In press, ⟨10.1007/s11661-020-05727-y⟩
Andriollo, T, Lacaze, J & Tiedje, N S 2020, ' Creep of the Matrix During Coalescence and Overgrowth of Graphite Precipitates in a High-Silicon Spheroidal Graphite Iron Submitted to Thermal Cycling in the Ferritic Domain ', Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, vol. 51A, pp. 2685-2688 . https://doi.org/10.1007/s11661-020-05727-y

International audience; Thermal cycling of a high-silicon spheroidal graphite cast iron within the ferritic domain leads to coalescence of graphite particles with dendritic protuberances on the largest ones. This phenomenon occurs if there is some di

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5fde2395a1546fe0aeaa51b9c6596b54
https://hal.archives-ouvertes.fr/hal-02517975

Combined numerical and experimental determination of the convective heat transfer coefficient between an AlCrN-coated Vanadis 4E tool and Rhenus oil

Autor: Chris Valentin Nielsen, Esmeray Üstünyagiz, Niels Skat Tiedje, Niels Bay

Publikováno v: Üstünyagiz, E, Nielsen, C V, Tiedje, N S & Bay, N 2018, ' Combined numerical and experimental determination of the convective heat transfer coefficient between an AlCrN-coated Vanadis 4 tool and Rhenus oil ', Measurement: Journal of the International Measurement Confederation, vol. 127, pp. 565-570 . https://doi.org/10.1016/j.measurement.2018.05.108

Regardless of the field of application, the reliability of numerical simulations depends on correct description of boundary conditions. In thermal simulation, determination of heat transfer coefficients is important because it varies with material pr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b800670b853d4d1b1fd5b615ddfd7c60
https://doi.org/10.1016/j.measurement.2018.05.108

On the role of the powder stream on the heat and fluid flow conditions during Directed Energy Deposition of maraging steel—Multiphysics modeling and experimental validation

Autor: Venkata Karthik Nadimpalli, David Bue Pedersen, Jesper Henri Hattel, Niels Skat Tiedje, Mohamad Bayat, Giuliano Bissacco, Jesper Thorborg, Francesco Giuseppe Biondani, Sina Jafarzadeh

Publikováno v: Bayat, M, Nadimpalli, V K, Biondani, F G, Jafarzadeh, S, Thorborg, J, Tiedje, N S, Bissacco, G, Pedersen, D B & Hattel, J H 2021, ' On the role of the powder stream on the heat and fluid flow conditions during Directed Energy Deposition of maraging steel-Multiphysics modelling and experimental validation ', Additive Manufacturing, vol. 43, 102021 . https://doi.org/10.1016/j.addma.2021.102021

The Directed Energy Deposition (DED) process of metals, has a broad range of applications in several industrial sectors. Surface modification, component repairing, production of functionally graded materials and more importantly, manufacturing of com

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::952851d894b3046e6d4f4129ec000116
https://doi.org/10.1016/j.addma.2021.102021