Hans-Peter Heller
Freiberg University of Mining and Technology
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Publication
Featured researches published by Hans-Peter Heller.
Steel in Translation | 2017
D. A. Stepanenko; Olena Volkova; Hans-Peter Heller; P. I. Otorvin; D. A. Chebykin
In selecting the best chemical composition of slag melts, it is expedient to take account of their viscosity and electrical conductivity, which are structure-sensitive properties. The viscosity and electrical conductivity of blast-furnace slag are studied experimentally. To permit correct selection of the slag conditions in the blast furnace, a parameter is proposed for assessing the relation between the structural particles of the melt: the heterogenization temperature, which takes account of the viscosity and electrical conductivity of the slag melts. The discharge temperature of the slag from blast furnace 8 at PJSC ArcelorMittal Kryvyi Rih is measured. Comparison of the actual discharge temperature of the slag and the calculated heterogenization temperature for blast furnace 8 permits identification of the optimal slag basicity (CaO/SiO2).
6th International Symposium on High-Temperature Metallurgical Processing | 2015
Tobias Dubberstein; Hans-Peter Heller
The viscosity of Fe-Cr-Mn-Ni TRIP/TWIP (Transformation Induced Plasticity, Twinning Induced Plasticity) steel with varied nickel content is investigated using a vibrating finger viscometer. The viscosity of the melt is calculated from the change in power input in the field coil by an immersed finger into the liquid steel to maintain a constant peak-to-peak amplitude of the sine wave of oscillator compared to the idle state. Nickel content in steel is varied from 3 wt% to 9 wt%. The dynamic viscosity (ŋ) at 1600 °C for 3 wt% Ni is 3.73±0.14 mPas, for 6 wt% Ni 3.50±0.03 mPas, and for 9 wt% Ni 3.93±0.09 mPas. There is a kink from low to high nickel content in viscosity values of Fe-Cr-Mn-Ni alloys. This phenomenon can be explained by a change in coordination number in the melt, as reported for Fe-Ni binary system in literature. The availability of viscosity data delivers relevant input to model free fall atomization processes of FeCrMnNi alloys.
Steel Research International | 2013
Tobias Dubberstein; Hans-Peter Heller
Isij International | 2003
Olena Volkova; Hans-Peter Heller; Dieter Janke
Journal of Materials Science | 2015
Tobias Dubberstein; Hans-Peter Heller; Jens Klostermann; Rüdiger Schwarze; Jürgen Brillo
Steel Research International | 2014
Tobias Dubberstein; Andreas Jahn; Michael Lange; Hans-Peter Heller; Piotr R. Scheller
Steel Research International | 2016
Tobias Dubberstein; Hans-Peter Heller; Olga Fabrichnaya; Christos G. Aneziris; Olena Volkova
Isij International | 2017
Dmitry Chebykin; Hans-Peter Heller; Tobias Dubberstein; Iurii Korobeinikov; Olena Volkova
Steel Research International | 2013
Hans-Peter Heller; Michael Hötzel; Bernd Lychatz; Nicole Haustein
Steel Research International | 2003
Olena Volkova; Hans-Peter Heller; Dieter Janke