Application of Innovative Methods of Predictive Control in Projects Involving Intelligent Steel Processing Production Systems

Svetlík, Jozef; Malega, Peter; Rudy, Vladimír; Rusňák, J.; Kováč, Juraj

doi:10.3390/ma14071641

Cited by 7 publications

(5 citation statements)

References 26 publications

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“…At a recyclate concentration of 50 wt.% or more, no significant differences in unnotched impact strength values were recorded. The results also confirm the conclusions of Wang et al [ 23 ] and Svetlik et al [ 24 ].…”

Section: Evaluation Of Results and Discussionsupporting

confidence: 92%

The Influence of the Use of Technological Waste and the Simulation of Material Lifetime on the Unnotched Impact Strength of Two Different Polymer Composites

2022

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The article deals with the assessment of the impact of technological polymer waste resulting from plastic injection technology and the subsequent simulation of the lifetime of polymer products on the impact strength of two different polymer composites. Two different types of polymer composites used to produce plastic parts in the automotive industry were chosen for the research. Based on the evaluation of the PBT composite before exposing the specimens to elevated temperature, it can be concluded that the concentration of the recycled material in the virgin material only affects the values of the unnotched impact strength of the PBT composite when the recycled material accounts for at least 50 wt.%. The results of the unnotched impact strength of the test specimens exposed at 150 °C/500 h make it evident that the addition of recycled material to the virgin material significantly reduces the components’ service lives. The same trend could be observed with the second tested composite material, PPA.

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Section: Evaluation Of Results and Discussionsupporting

confidence: 92%

The Influence of the Use of Technological Waste and the Simulation of Material Lifetime on the Unnotched Impact Strength of Two Different Polymer Composites

2022

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“…If we wanted to achieve a much worse classification scale, we would have to focus on the chemical composition (properties) of the degreaser, the temperature of the solution, the time of degreasing. [14], [17].…”

Section: Discussionmentioning

confidence: 99%

Analysis of the Adhesion of the Surface Layer Formed due to Cataphoresis Coating

Fejko,

Dobránsky,

Balint Bali

2023

TEM Journal

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The paper focuses on the cross-cut test, which serves as a basis for determining the adhesion test on the surface of aluminium parts. The coating adhesion test was performed according to the ISO 2409 standard where. Before carrying out the actual measurement, the tools necessary for making those individual measurements were prepared. A knife, an adhesive tape and a grid were used. The result was evaluated on the basis of the ISO 2409 standard. Spacing of a grid was 2mm apart. Grid exam cut test was carried out on 32 samples. The classification of the samples ranged from 0 to 1. At 1, we found that the surface of the material was slightly damaged. At the scale of 0, a smooth cut was made on the material surface, and no damage occurred. Through research, we found that with a constant chemical degreasing factor, the adhesion test varies according to the EN ISO 2409 standard at values 0 and 1. It follows that if we wanted to achieve worse cutting conditions in the grid, we would have to change the temperature of the solution, the time depositions.

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“…Under certain conditions, it may be necessary to soft anneal the material. This soft annealing temperature is from 320 to 350 • C [24][25][26].…”

Section: Materials Selectionmentioning

confidence: 99%

A Determination of the Influence of Technological Parameters on the Quality of the Created Layer in the Process of Cataphoretic Coating

Dobránsky,

Gombár,

Fejko

et al. 2023

Metals

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Cataphoresis varnishing enables an organic coating to form on an aluminum substrate, thus increasing its corrosion resistance and durability. Cataphoresis varnishing is known to ensure a high adhesion of the created cataphoresis layer and a good homogeneity of this layer, even on surfaces with complex geometry. This paper aimed to optimize the deposition process and to analyze and evaluate the thickness of a cataphoresis layer formed on an aluminum substrate from AW 1050—H24 material. In total, 30 separate samples were created in accordance with the Design of Experiments methodology, using a central composite plan. The independent input factors in the study were: the electrical voltage (U) and deposition time in the cataphoresis varnishing process (tKTL) at the polymerization times of 15 min, 20 min, and 25 min, respectively. The results of the statistical analysis showed that the voltage accounted for 33.82% of the change in the thickness of the created layer and the deposition time contributed 28.67% to thi change. At the same time, the interaction of the voltage and deposition time (p < 0.0001) accounted for 20.25% of the change in the thickness of the layer under formation. The regression model that was constructed showed a high degree of prediction accuracy (85.8775%) and its use as a function for nonlinear optimization provided a maximum layer thickness th of max = 26.114 µm, at U = 240 V and tKTL = 6.0 min, as was proven under experimental conditions.

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Application of Innovative Methods of Predictive Control in Projects Involving Intelligent Steel Processing Production Systems

Cited by 7 publications

References 26 publications

The Influence of the Use of Technological Waste and the Simulation of Material Lifetime on the Unnotched Impact Strength of Two Different Polymer Composites

The Influence of the Use of Technological Waste and the Simulation of Material Lifetime on the Unnotched Impact Strength of Two Different Polymer Composites

Analysis of the Adhesion of the Surface Layer Formed due to Cataphoresis Coating

A Determination of the Influence of Technological Parameters on the Quality of the Created Layer in the Process of Cataphoretic Coating

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