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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Degradace strojírenských materiálů opotřebením
 Liška, Jaromír
The aim of this paper is to analyse the process of wear and abrasive materials which are able to withstand wear and to prove these findings in experiments in both laboratory and operational conditions. The first section includes an analysis of a material of the worn parts of dies (mould tools) for the manufacture of technical ceramics and solutions to increase their lifespan. A more resistant ledeburitic tool steel for the manufacture of dies (mould tools) 19 573 (according to ČSN) was chosen. The second section comprises laboratory tests with chosen PVD coatings applied on selected steel. The most resistant nitride coating was chosen after laboratory tests done in an abrasive vessel and with an abrasive cloth. The third section describes the operational test of the dies (mould tools) with functional component parts on which there was applied a chosen coating. The last section of the work proves the possibility of a usage of tool steels for the manufacture of abrasively stressed components of a plough. Unalloyed structural steel samples with a different heat treatment and the abrasion-resistant material Hardox were tested together with the samples of tool steels. The wear resistance of these steels was also proven by the laboratory tests with the abrasive cloth and the Bond`s device. The results were statistically evaluated, compared and graphically displayed. The achieved results can be applied in technical practice and they enable us to determine the way of the future development.
Detailed record
Degradace strojírenských materiálů opotřebením
 Liška, Jaromír
The aim of this paper is to analyse the process of wear and abrasive materials which are able to withstand wear and to prove these findings in experiments in both laboratory and operational conditions. The first section includes an analysis of a material of the worn parts of dies (mould tools) for the manufacture of technical ceramics and solutions to increase their lifespan. A more resistant ledeburitic tool steel for the manufacture of dies (mould tools) 19 573 (according to ČSN) was chosen. The second section comprises laboratory tests with chosen PVD coatings applied on selected steel. The most resistant nitride coating was chosen after laboratory tests done in an abrasive vessel and with an abrasive cloth. The third section describes the operational test of the dies (mould tools) with functional component parts on which there was applied a chosen coating. The last section of the work proves the possibility of a usage of tool steels for the manufacture of abrasively stressed components of a plough. Unalloyed structural steel samples with a different heat treatment and the abrasion-resistant material Hardox were tested together with the samples of tool steels. The wear resistance of these steels was also proven by the laboratory tests with the abrasive cloth and the Bond`s device. The results were statistically evaluated, compared and graphically displayed. The achieved results can be applied in technical practice and they enable us to determine the way of the future development.
Detailed record

See also: similar author names
24 LIŠKA, Jan
9 LIŠKA, Jaroslav
11 LIŠKA, Jiří
24 Liska, Jan
11 Liška, Jakub
24 Liška, Jan
9 Liška, Jaroslav
11 Liška, Jiří
3 Liška, Josef
2 Liška, Juraj
9 Líska, Jaroslav
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