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

(26 reference statements)

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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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“…The correct choice of parameters depends on the strength of the drilled material, the diameter of the drilled hole, and the force exerted in the process of the hole-drilling [3][4][5]. The correct selection of parameters with optimal settings can be monitored in real time by a suitably selected sensor involved in the drilling process [6,7].…”

Section: State Of the Artmentioning

confidence: 99%

Influence of Coolant Properties and Chip Former Geometry on Tool Life in Deep Drilling

Kočiško,

Pollák,

Grozav

et al. 2023

Applied Sciences

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The aim of the article is to find a correlation between a change in the properties of the cooling agent and a change in the geometry of the chipformer, as both are reflected in the service life of the tool after deep drilling. The reason for carrying out the research is the requirement of practice to obtain the economic efficiency of the production of such a demanding process as deep drilling. When applying the latest designs of gun drills, it is very important to correctly set the technological parameters to maintain the stability of the cutting process. One of the most important parameters is the correct removal of heat from the cutting site, and this will be ensured by the stability of pressure, temperature, and percentage of emulsion in the cooling medium, as well as the adjustment of the geometry of the chip former. On this basis, a large number of tests were carried out, consisting of testing the number of drilling cycles carried out by new, unfluted gun drills at constant feed rates and spindle rotation frequencies. After testing, it is possible to modify and supplement the existing methodology of deep drilling technology in terms of managing the cooling emulsion and chip-forming geometry. The tests were aimed at increasing the service life and the number of possible re-grindings of the gun drills depending on changes in the percentage of the emulsion concentration, the pressure and temperature of the cooling agent, and the associated chipformer geometry.

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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

Influence of Coolant Properties and Chip Former Geometry on Tool Life in Deep Drilling

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