Zobrazeno 1 - 10
of 76
pro vyhledávání: '"Jiří Švejcar"'
Autor:
Ladislav Čelko, Vendula Bednaříková, Michaela Remešová, Mariano Casas Luna, Lenka Klakurková, Karel Zábranský, Daniel Holemý, Jiří Švejcar
Publikováno v:
Solid State Phenomena. 334:57-62
The mechanical properties of grinding-tools relies highly on adhesion between the abrasive particles and the bonding phase, generally composed of organic rubber or resin materials. The surface modification of abrasive particles represents an industri
Publikováno v:
Solid State Phenomena. 334:19-25
In this article, the possibility of using investment casting technology to produce high-quality shaped and thin-walled castings of magnesium alloys (Mg-Al based alloy - AZ91E and Mg-Zr-based alloy WE43B) at ALUCAST s.r.o. (the Czech based precision c
Publikováno v:
Key Engineering Materials. 923:127-132
The paper deals with analysing the causes of damage to the injection mould insert block to produce plastic parts. Mould insert block material has been declared as alloy tool steel for hot working 1.2344 (X40CrMoV5-1). Part of the analysis is also eva
Publikováno v:
Key Engineering Materials. 923:133-138
The paper deals with complex material analysis of a shaft after failure. The shaft was operated as part of an "Abradable rig" device used to test the resistance of coatings at high speeds, which simulates a turboprop engine's operating conditions. Th
Publikováno v:
Defect and Diffusion Forum. 405:217-222
In the manufacture of wires designed for the welding of low-alloy fine-grain steels, multiple internal discontinuities appear during some periods that are the cause of major failures (cracking) of the wires. To establish the causes of this phenomenon
Autor:
Lenka Klakurková, Petr Skalka, David Jech, Daniel Holemý, Karel Slámečka, Jiří Švejcar, Jozef Kaiser, Ladislav Čelko, Ivana Ročňáková
Publikováno v:
Defect and Diffusion Forum. 405:43-47
In order to increase the peripheral speed of grinding wheels of size of Ø 500 × 18 × Ø 200 mm for precise hard metallic surface finishing from conventional 80 m.s-1 up to 138 m.s-1 while still ensuring their safety and reliability, the critical l
Autor:
Ladislav Čelko, Pavel Gejdoš, Jiří Švejcar, Martin Juliš, Miroslava Horynová, Lenka Klakurková
Publikováno v:
Engineering Failure Analysis. 82:848-854
Corrosion of massive components used in hydropower plants causes considerable technical problems and economic losses. Due to the corrosive environment and strong dynamic loading, such components must meet high demands. Quality of the components is es
Autor:
Pavel Gejdoš, Lenka Klakurková, Miroslava Horynová, Martin Juliš, Jiří Švejcar, Lucie Páleníková
Publikováno v:
Solid State Phenomena. 270:63-67
The paper focus on the metallographic analysis of damaged heat exchanger made of high‑alloy austenitic steel by soldering. The object in question is a soldered joint of main mounting plate of the heat exchanger and first heat exchanging plate of it
Autor:
Jiří Švejcar, Lenka Klakurková, Pavel Gejdoš, Martin Juliš, Miroslava Horynová, Lucie Páleníková
Publikováno v:
Solid State Phenomena. 270:68-73
Stainless steel corrugated hoses are widely used in many areas of industry. They are used in application such as distribution of drinking and supply water, gas and also various working fluids, for example in cooling systems. During the assembly of AI
Autor:
Pavel Gejdoš, Jiří Švejcar, Michaela Remešová, Martin Juliš, Lucie Páleníková, Lenka Klakurková
Publikováno v:
Solid State Phenomena. 270:93-98
The paper sums up the results of a complex analysis, using metallographic, microfractograpic and other methods, with the aim of establishing the cause of fractures appearing in bolts of a terminal board. The analysis has shown unambiguously that the