1.
Fegyverneki, M. Bubenkó, D. Molnár
University of Miskolc, Foundry Institute, Hungary
THE EFFECT OF GRAIN REFINEMENT ON PRIMARY SOLIDIFICATION
2.
RUDOLF1, T. RAVLAN2, G. LOJEN1, I. ANŽEL1, A. IVANIČ3, J. MELE4, E. HUDRAP2
1University of Maribor, Faculty of Mechanical Engineering, Slovenia,
2SIJ Ravne Systems d.o.o, Slovenia,
3CPPE d.o.o., Celje, Slovenia
4 University of Maribor, Faculty of Civil Engineering, Transportation Engineering and Architecture, Slovenia
DEVELOPMENT OF AN ADVANCED STEEL TOOL FOR THE MOST DEMANDING APPLICATIONS IN INDUSTRY
3.
Aigner, M. Brandner, L. Elizondo, A. Paar, T. Trickl, M. Krobath, P. Prevedel
Eisenwerk Sulzau-Werfen R. & E. Weinberger AG, Austria
SET UP OF A MODEL FOR HEAT TREATMENT OF ROLLS FOR HOT STRIP MILLS
1.
Fegyverneki, M. Bubenkó, D. Molnár
University of Miskolc, Foundry Institute, Hungary
THE EFFECT OF GRAIN REFINEMENT ON PRIMARY SOLIDIFICATION
Summary
In this research thermal analyses were carried out for different alloys, used for gravity die cast cylinder heads. The experiments were implemented in industrial conditions. The aim was to examine the effect of small amount of supplementary grain refining pre-alloy on primary crystallization. Different evaluating methods of thermal analysis were tested and compared. Results proved that dosing small amount of grain refining alloy is favourable in the foundry production practice.
Keywords: Al-Si alloy, Melt treatment, Grain Refinement, Master alloy
2.
RUDOLF1, T. RAVLAN2, G. LOJEN1, I. ANŽEL1, A. IVANIČ3, J. MELE4, E. HUDRAP2
1University of Maribor, Faculty of Mechanical Engineering, Slovenia,
2SIJ Ravne Systems d.o.o, Slovenia,
3CPPE d.o.o., Celje, Slovenia
4 University of Maribor, Faculty of Civil Engineering, Transportation Engineering and Architecture, Slovenia
DEVELOPMENT OF AN ADVANCED STEEL TOOL FOR THE MOST DEMANDING APPLICATIONS IN INDUSTRY
Summary
In the lecture, we will present the development of an advanced steel tool for the most demanding applications in industry, implemented by SIJ Ravne Systems in conjunction with the University of Maribor, and partners Bosio d.o.o. and CPPE d.o.o. Development is, on the one hand, related to the identification of key properties of the steel tool which represent a competitive advantage compared to other conventional steel tools, which are: impact strength, hardness, tensile strength and cutting ability. On the other hand, the development represents the introduction of an appropriate production technology and subsequent heat or mechanical treatment, which enables the achievement of key properties of advanced steel.
Key words: cold-work tool steel, properties, heat and mechanical treatment
3.
Aigner, M. Brandner, L. Elizondo, A. Paar, T. Trickl, M. Krobath, P. Prevedel
Eisenwerk Sulzau-Werfen R. & E. Weinberger AG, Austria
SET UP OF A MODEL FOR HEAT TREATMENT OF ROLLS FOR HOT STRIP MILLS
Summary
The heat treatment of composite work rolls is a critical process step in which large internal stresses can occur due to the different thermophysical properties of the used materials. The aim of this work was to create a parameterized FE model to test new materials and heat treatment routes safely. This work presents the experimental preliminary work, the setup and the validation of the simulation model with regard to the heat conduction simulation, as well as the estimation of the stress development by the mechanical simulation.
Keywords: Rolls, heat treatment, simulation, Abaqus, residual stresses