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Wyszukujesz frazę "mills" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
An attempt to increase technological capabilities of laboratory vibratory mills by changing the construction of chamber
Autorzy:
Tomach, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/2064386.pdf
Data publikacji:
2019
Wydawca:
STE GROUP
Tematy:
mills
vibratory mills
fine grinding
high energy mills
młyny
młyny wibracyjne
drobne mielenie
młyny wysokoenergetyczne
Opis:
The paper presents the issues related to the grinding process in the vibration mills with low vibration frequency. These mills are rated among devices with high energy of impacts with much wider potential of industrial use than the classic gravitation mills. In vibratory mills there is an unfavorable decrease in the intensity of the grinding process along with the increase in the chamber diameter, which makes it impossible to achieve high performance of such devices. One of the ways to reduce or eliminate this occurrence is to intensify the load movement inside the chamber - this is the subject of this article. The article shows that in a vibrating mill of periodic action it is possible to increase its technological capabilities by application of an appropriate cylindrical component permanently installed inside the milling chamber. The paper also presents an attempt to increase the technological capabilities of a laboratory continuous vibratory mill.
Źródło:
New Trends in Production Engineering; 2019, 2, 1; 195--205
2545-2843
Pojawia się w:
New Trends in Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Using FCAW with Electrodes Based on Fe-Ti-Mo-B-C System for Increasing of Durability of Junk Removal Tools
Autorzy:
Ivanov, Olexandr
Prysyazhnyuk, Pavlo
Romanyshyn, Liubomyr
Romanyshyn, Taras
Mosora, Yurii
Powiązania:
https://bibliotekanauki.pl/articles/2065035.pdf
Data publikacji:
2021
Wydawca:
STE GROUP
Tematy:
abrasion resistance
flux cored electrodes
hardfacing
junk mills
microstructure
Opis:
In this work were analyzed factors and working conditions that leads to the wearing of junk mills tools that are a part of junk removal equipment used in drilling and workover of borehole. Such equipment is a part of oil and gas industry and work under condition of intense abrasive wearing with increased pressures and cyclic loads. Was established that traditional hardfacing materials based on the Fe-Cr-C system are not effective for improvement of abrasion resistance of elements of such equipment due to their low crack resistance and low hardness of chromium carbides. The aim of this work was to increase a durability of that equipment by using of flux cored electrodes with reaction components of pure metal powders, which leads to forming the fine-grained structure with increased hardness. Powders of Ti, Mo, B4C and their combinations were used. Structures of the hardfacing coatings were investigated by method of metallography, scanning electron microscopy (SEM). Abrasion wear tests were held under condition of fixed and non-fixed abrasion. Using of pure metal powders led to formation of a fine-grained structure with grains of Mo2FeB2 that forms around TiC, which work as modifier. It was investigated that the researched material based on Fe-Ti-Mo-C-B system that was used for increasing the wear resistance of junk mills led to increasing of the TBO period in 1.5-1.6 times comparing with serial hardfacing materials based on tungsten.
Źródło:
Multidisciplinary Aspects of Production Engineering; 2021, 4, 1; 132--141
2545-2827
Pojawia się w:
Multidisciplinary Aspects of Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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