Temat: coefficient of friction - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Research on the coefficient of friction of becorit K22 and K25SB linings
Autorzy:: Stawowiak, Michał
Żołnierz, Marcel
Rożenek, Zenon
Powiązania:: https://bibliotekanauki.pl/articles/2064401.pdf
Data publikacji:: 2019
Wydawca:: STE GROUP
Tematy:: steel rope
coefficient of friction
lining
lina stalowa
współczynnik tarcia
wykładzina
Opis:: The article presents the method and results of experimental tests of the coefficient of friction between a steel rope and friction lining. The BECORIT K22 and BECORIT K25SB floor coverings were tested. The tests were carried out in accordance with the recommendations of the new German standard: DIN 21258 - Lubricants and impregnating agents for drive discs and transport ropes in mining - safety and testing requirements. The authors in this article emphasize that the Becorit K22 and K25SB linings are used for the wheels of propeller drums of mining machines. Characterized by high coefficients of friction (μ ≥ 0.25), also in cases of extreme weather conditions on the surface. The chemical properties of BECORIT linings ensure their resistance to swelling in the event of different oils and lubricants as well as mine waters. The material of which the claddings are made ensures very good machinability during rolling of rope grooves with the use of turning or milling tools. BECORIT K22 plastic cladding is particularly suitable for use in hoisting machines, where the rope base forms a large overlap angle on the wheel grooves (max 1°31'), which causes its lateral wear faster. BECORIT K22 material in this case provides a higher service life compared to other materials. Due to the way they are mounted on the wheel, they are made as 1-piece (monolith) or bipartite. In this article, moreover, the structure and principle of operation of the measuring station on which the tests were carried out are presented in great detail.
Źródło:: New Trends in Production Engineering; 2019, 2, 1; 367--375
2545-2843
Pojawia się w:: New Trends in Production Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: Modeling the movement of broadcast on the concentration table
Autorzy:: Feliks, Jacek
Krawczyk, Magdalena
Powiązania:: https://bibliotekanauki.pl/articles/2064429.pdf
Data publikacji:: 2019
Wydawca:: STE GROUP
Tematy:: concentration table
coefficient of friction
enrichment
tabela koncentracji
współczynnik tarcia
wzbogacanie
Opis:: The article attempts to analyze the work of the concentration table, on which the distribution of the material under investigation takes place. The efficiency of separation or otherwise enrichment depends on the drive that puts the concentration table plate into an asymmetrical reciprocating movement. The most frequently used solutions are concentration tables, on which the distribution of enriched material takes place in an aqueous medium commonly called wet enrichment. The AGH University of Science and Technology conducted simulation tests of material enrichment on a concentration table using the differences in friction coefficient commonly referred to as dry enrichment, i.e. without an additional medium. The article presents the effects of simulations that have been carried out for reference materials characterized by different friction coefficients and densities. The summary presents the analysis of obtained effects of computer simulations of material movement with different coefficients of friction. The simulations were carried out for variables: the frequency of vibrations of the concentration table and the angle of inclination of the table of the concentration table. It has been shown that it is possible to enrich the material by changing the above-mentioned operating parameters of the device.
Źródło:: New Trends in Production Engineering; 2019, 2, 1; 304--311
2545-2843
Pojawia się w:: New Trends in Production Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 3.

Tytuł:: Methods of enlarging material to the concentration table
Autorzy:: Feliks, Jacek
Krawczyk, Magdalena
Powiązania:: https://bibliotekanauki.pl/articles/2064376.pdf
Data publikacji:: 2019
Wydawca:: STE GROUP
Tematy:: concentration table
coefficient of friction
enrichment
tabela koncentracji
współczynnik tarcia
wzbogacanie
Opis:: Concentration tables are one of the oldest oscillatory enrichments with over 100 years of tradition. On this type of distribution tables are made according to material mass in many recurring cycles induced by appropriate drives. So-called wet tables are the devices most often used for coal enrichment in Polish mines because this process generates very high costs, high water consumption and pollution of the environment, as well as the need for, among others, water and mud management is increasingly being replaced mainly in areas poor in water by the modern model of the air concentration table - FGX produced in China. The process of enrichment on this type of table itself runs in a manner comparable to the method of wet enrichment with the difference that the FGX is distributed on a perforated plate, in this case we deal with air pollution. Department of Machinery Engineering and Transport's attempts to use the differences in coefficients of friction in over-resonance screens have shown that it is possible effective separation of grains with different coefficients of friction. The article presents a theoretical analysis and presents the results of performed dry enrichment trials using different coefficients of friction. The summary presents the advantages of using the enrichment method using the differences in friction coefficients and test results.
Źródło:: New Trends in Production Engineering; 2019, 2, 1; 59--68
2545-2843
Pojawia się w:: New Trends in Production Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 4.

Tytuł:: Oddziaływanie między urobkiem i taśmą w górniczych przenośnikach taśmowych – wybrane zagadnienia
Interaction between excavated material and belt in mining belt conveyors - selected issues
Autorzy:: Adamecki, D.
Powiązania:: https://bibliotekanauki.pl/articles/113009.pdf
Data publikacji:: 2017
Wydawca:: STE GROUP
Tematy:: przenośnik taśmowy
test tarcia
współczynnik tarcia zewnętrznego
taśma elastomerowa
ugięcie taśmy
conveyor belt
friction test
coefficient of wall friction
elastomeric belt
belt sag
Opis:: Przedmiotem referatu jest przedstawienie zjawiska oddziaływania między urobkiem i taśmą w górniczych przenośnikach taśmowych. Taśma obciążona urobkiem odkształca się wpływając na wiele parametrów eksploatacyjnych przenośnika taśmowego. Linia ugięcia taśmy między zestawami krążnikowymi jest jednym z istotnych parametrów opisujących współpracę urobku z taśmą przenośnikową. W artykule przedstawiono zmodyfikowane stanowisko badawcze do identyfikacji sprzężenia ciernego między urobkiem i taśmą w warunkach drgań wymuszonych. Następnie opisano różne modele matematyczne linii ugięcia taśmy między zestawami krążnikowymi w warunkach statycznych i dynamicznych jej obciążeń.
The subject of the paper is the phenomenon of interaction between excavated material and the belt in mining conveyor belts. The belt loaded by excavated material is deformed affecting in a number of operational parameters of the belt conveyor. The sag of the belt between the idlers is one of the important parameters describing the interaction between excavated material and the conveyor belt. The paper presents a modified test rig to identify the frictional contact between the excavated material and conveyor belt under forced vibrations. In the paper are given mathematical models in static and dynamic conditions describing the sag of the belt between the idlers.
Źródło:: Systemy Wspomagania w Inżynierii Produkcji; 2017, 6, 2; 11-20
2391-9361
Pojawia się w:: Systemy Wspomagania w Inżynierii Produkcji
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "coefficient of friction" wg kryterium: Temat

Źródło danych

Dostawca treści

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język