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Dive into the research topics where Hans-Peter Heller is active.

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Featured researches published by Hans-Peter Heller.


Steel in Translation | 2017

Selecting optimal slag conditions in the blast furnace

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

High Temperature Investigation of Viscosity for FeCrMnNi As‐Cast Trip/Twip Steel

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

Effect of Surface Tension on Gas Atomization of a CrMnNi Steel Alloy

Tobias Dubberstein; Hans-Peter Heller


Isij International | 2003

Microstructure and cleanliness of rapidly solidified steels

Olena Volkova; Hans-Peter Heller; Dieter Janke


Journal of Materials Science | 2015

Surface tension and density data for Fe–Cr–Mo, Fe–Cr–Ni, and Fe–Cr–Mn–Ni steels

Tobias Dubberstein; Hans-Peter Heller; Jens Klostermann; Rüdiger Schwarze; Jürgen Brillo


Steel Research International | 2014

Interfacial Reaction between Iron-Based Alloys and Polycrystalline α-Al2O3

Tobias Dubberstein; Andreas Jahn; Michael Lange; Hans-Peter Heller; Piotr R. Scheller


Steel Research International | 2016

Determination of Viscosity for Liquid Fe–Cr–Mn–Ni Alloys

Tobias Dubberstein; Hans-Peter Heller; Olga Fabrichnaya; Christos G. Aneziris; Olena Volkova


Isij International | 2017

Viscosity Measurement of Slags using Rotating Bob and Vibrating Finger Viscometer

Dmitry Chebykin; Hans-Peter Heller; Tobias Dubberstein; Iurii Korobeinikov; Olena Volkova


Steel Research International | 2013

Avoidance of Calibrating Errors with Viscosity Measurements of Metallurgical Slags

Hans-Peter Heller; Michael Hötzel; Bernd Lychatz; Nicole Haustein


Steel Research International | 2003

Mathematical simulation of process parameters in the case of rapid solidification of steel

Olena Volkova; Hans-Peter Heller; Dieter Janke

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Tobias Dubberstein

Freiberg University of Mining and Technology

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Olena Volkova

Freiberg University of Mining and Technology

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Christos G. Aneziris

Freiberg University of Mining and Technology

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Humberto Chaves

Freiberg University of Mining and Technology

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Dieter Janke

Freiberg University of Mining and Technology

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Bernd Lychatz

Freiberg University of Mining and Technology

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Claudia Wenzel

Freiberg University of Mining and Technology

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Clemens Kirmse

Freiberg University of Mining and Technology

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D. A. Chebykin

Freiberg University of Mining and Technology

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Dmitry Chebykin

Freiberg University of Mining and Technology

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