Comparative analysis of physical and mechanical properties of hard alloy products depending on the synthesis mode

2021 ◽  
Author(s):  
Alexander Zhadyaev ◽  
Dmitri Zakharov ◽  
Alexander Amosov ◽  
Vladislav Novikov
Keyword(s):  
Mechanical Properties ◽  
Comparative Analysis ◽  
Hard Alloy ◽  
Physical And Mechanical Properties

scholarly journals Domestic and foreign experience of using soft fitting structures in tent equipment

2018 ◽  
Vol 251 ◽  
pp. 06008 ◽  
Author(s):  
Boris Strigin
Keyword(s):  
Mechanical Properties ◽  
Comparative Analysis ◽  
Light Transmission ◽  
Physical And Mechanical Properties ◽  
Light Reflection ◽  
Foreign Experience ◽  
Different Types

This research is review of purpose like soft enclosing structures made of different types of awning material: structural (construction of awning materials, solid (stretching and rupture) and lighting engineering (light transmission, light reflection). These researches are shown in following: graphs, tables, shorts. The prospect of development this type of construction is reviled on domestics and foreign examples of awning material. Results of studies are presented in the form of graphs and tables on the study of physical and mechanical properties of domestic tent materials and a comparative analysis of domestic and foreign experience in the use of these materials in tent structures.

Comparative Analysis of the Physical and Mechanical Properties of Composites with Functional Fillers Based on Waste

2021 ◽  
Vol 410 ◽  
pp. 668-673
Author(s):  
Vyacheslav V. Barakhtenko ◽  
Tatiana H. Sahabutdinova ◽  
Yury V. Novikov
Keyword(s):  
Mechanical Properties ◽  
Comparative Analysis ◽  
Industrial Waste ◽  
Construction Materials ◽  
Physical And Mechanical Properties ◽  
Point Of View ◽  
Metallic Materials ◽  
Materials Used ◽  
Functional Fillers ◽  
Properties Of Composites

The article is devoted to research in the development of composite materials based on polyvinyl chloride and industrial waste from the metallurgical, energy and mining industries. The properties of dispersed waste have been studied, which make it possible to speak of the possibility of their use as fillers for polymer compositions. A comparative analysis of the tested physical and mechanical properties is carried out, depending on the characteristics of the particle size of the fillers. It was revealed that from the point of view of construction materials, all the wastes under study can be used as fillers. The development will make it possible to dispose of industrial waste to obtain useful products and save natural non-metallic materials used in the creation of composites.

Research of physical and mechanical properties, chemical composition and safety of melon variety «torpedo»

2021 ◽  
pp. 88-91
Author(s):  
Ауелбек Изтаев ◽  
Галия Куандыковна Искакова ◽  
Мадина Асатуллаевна Якияева ◽  
Бауыржан Ауелбекович Изтаев ◽  
Зайра Сатаевна Уйкасова
Keyword(s):  
Mechanical Properties ◽  
Comparative Analysis ◽  
Chemical Composition ◽  
Protein Content ◽  
Phosphorus Content ◽  
Physical And Mechanical Properties ◽  
Fat Content ◽  
Significant Difference ◽  
Reducing Substances ◽  
High Phosphorus Content

Представлены результаты исследований физико-механических свойств, химического состава и показателей безопасности составных частей (мякоть, кожура, семена) дыни сорта «Торпеда». В результате сопоставительного анализа химического состава мякоти, кожуры и семян дыни показано их существенное различие. Так, содержание жира в мякоти составляет 0,26±0,003 г, в кожуре - 1,24±0,01 г, в семенах - 26,21±0,31, содержание белка составляет 7,56±0,11; 9,92±0,14 и 21,52±0,32 г соответственно. Изучение содержания редуцирующих веществ и сырой клетчатки показало их высокое содержание в кожуре по сравнению с мякотью и семенами. Установлено, что высокое содержание калия (934,88±14,02 г) и натрия (270,54±3,78 г) сосредоточены в мякоти, высокое содержание железа (15,12±0,23) - в кожуре, а высокое содержание фосфора (854,72±0,82 г) - в семенах. По результатам исследований доказано, что показатели безопасности дыни сорта «Торпеда» полностью соответствуют требованиям ТР ТС 021/2011. The results of studies of the physical and mechanical properties, chemical composition and safety indicators of the constituent parts (pulp, peel, seeds) of «Torpedo» melon are presented. As a result of a comparative analysis of the chemical composition of the pulp, peel and seeds of the melon, their significant difference was shown. Thus, the fat content in the pulp is 0.26±0.003 g, in the peel - 1.24±0.01 g, in the seeds - 26.21±0.31, the protein content is, respectively, 7.56±0.11; 9.92±0.14 and 21.52±0.32 g. The study of the content of reducing substances and crude fiber showed their high content in the peel, in comparison with the pulp and seeds. It was found that a high content of potassium (934.88±14.02 g) and sodium (270.54±3.78 g) are concentrated in the pulp, a high content of iron (15.12±0.23) - in the peel, and a high phosphorus content (854.72±0.82 g) - in seeds. According to the research results, it has been proven that the safety indicators of the Torpedo melon fully comply with the requirements of TR CU 021/2011.

scholarly journals Perspectives of the industrial recycling of hard-alloy materials waste by electro-erosive grinding

2018 ◽  
Vol 224 ◽  
pp. 01010
Author(s):  
Kharis Rakhimyanov ◽  
Valentina Marusina
Keyword(s):  
Mechanical Properties ◽  
Specific Surface ◽  
Tungsten Carbide ◽  
Hard Alloy ◽  
Physical And Mechanical Properties ◽  
Spherical Shape ◽  
Production Waste ◽  
Hard Alloys ◽  
Sustainable Technologies ◽  
Powder Particles

The creation of efficient industries is possible by using sustainable technologies based on the processes of recycling of the production waste. First of all, it refers to expensive material waste, including hard alloys. The electro-erosive grinding is considered to be the effective method of recycling such materials. The results of research on recycling the tungsten-cobalt hard alloy show the possibility of obtaining tungsten-carbide powders possessing improved physical and mechanical properties. The technology mentioned is also perspective for recycling tungstenless hard-alloy waste both at the laboratory devices equipped with the RC-generator and at the industrial installations of bulky grinding. It is established experimentally that the electro-erosive grinding of the TN20 tungstenless hard alloy at the laboratory provides obtaining the main volume (up to 85%) of the powder particles of the spherical shape having a dimension of 5 µm and the specific surface of 31.5 m2/g. Higher physical and mechanical properties of powders are also provided during recycling the TN20 alloy waste at the industrial installations of bulky grinding.

scholarly journals Design of equipment for mas-wrestling

2020 ◽  
Vol 164 ◽  
pp. 14005
Author(s):  
Lyubov Zhukova ◽  
Diana Baisheva
Keyword(s):  
Mechanical Properties ◽  
Comparative Analysis ◽  
Design Process ◽  
Age Groups ◽  
Physical And Mechanical Properties ◽  
Weight Category ◽  
Mechanical Properties Of Materials ◽  
Properties Of Materials

The present research considers the elaboration of an item of sports equipment – a stick for mas-wrestling. The paper describes the design process of this equipment taking into account physical and mechanical properties and material roughness, as well as sportsmen’s anthropometry parameters according to their weight category. A classification of sportsmen by anthropometry indicators was elaborated, that contains three groups and provides for age groups. The material to produce the equipment for mas-wrestling was chosen based on a comparative analysis of physical and mechanical properties of materials.

scholarly journals АНАЛИЗ СВОЙСТВ МОДИФИЦИРОВАННЫХ МЕЛКОЗЕРНИСТЫХ БЕТОНОВ ПОЛИФУНКЦИОНАЛЬНОГО НАЗНАЧЕНИЯ И ИНФОРМАЦИОННАЯ МОДЕЛЬ СИСТЕМЫ ПОДДЕРЖКИ ПРИНЯТИЯ РЕШЕНИЙ

2019 ◽  
Author(s):  
E. Shinkevich ◽  
S. Grishin ◽  
A. Tertychny
Keyword(s):  
Mechanical Properties ◽  
Comparative Analysis ◽  
Chemical Composition ◽  
Data Model ◽  
Physical And Mechanical Properties ◽  
Fine Grained ◽  
Highly Active ◽  
Mixture Preparation ◽  
Increase Productivity ◽  
Ratio Of Components

На основе выполненных в работе исследований проведен сравнительный анализ изменения свойств активированных и не активированных смесей и мелкозернистых бетонов на их основе в зависимости от разной удельной поверхности тонкодиспесрных наполнителей: трепела или песка от содержания микронаполнителей: высокоактивного метакаолина, волластонита и водоредуцирующих добавок-суперпластификаторов С-3 или Melflux. Показано, что при переходе на другой вид наполнителя, даже такого же химического состава, оптимальные дозировки всех компонентов и их соотношение необходимо корректировать. При переходе на другой вид приготовления смесей соотношение компонентов также изменяется. Теоретически обоснована и экспериментально подтверждена эффективность совместного использования тонкодисперсных наполнителей заданной дисперсности, суперпластификатора С-3 или Melflux, высокоактивного метакаолина совместно с волластонитом в составе смесей для мелкозернистых бетонов в качестве полифункциональных модификаторов. Проведенные исследования показывают широкие возможности модификации составов органоминеральными экологически безвредными добавками и свидетельствуют о рациональности разработок комплексных полифункциональных модификаторов отдельно для активированных и не активированных мелкозернистых бетонов. Для активированных смесей рационально также нормировать более широкий спектр технологических свойств. Практические результаты, полученные авторами, обеспечивают как повышенные по сравнению с нормированными, так и высокие дополнительные показатели качества. Высокая степень влияния количественного состава мелкозернистых бетонов полифункционального назначения на их свойства предопределяет актуальность разработок универсальных программных комплексов. Разработана информационная модель системы поддержки принятия решений в процессе анализа свойств мелкозернистых бетонов полифункционального назначения.Based on the research performed, a comparative analysis of the changes in the properties of activated and non-activated fine-grained mixtures and solutions depending on the different specific surface fine fillers: finely ground trepel or sand, as well as on the content of inorganic PFM: highly active meta-kaolin, wollastonite and super-plasticizing additive superplasticizer C-3 or Melflux. The carried out researches show wide possibilities of modification of compositions by organomineral ecologically harmless additives and testify to rationality of development of complex additives separately for the activated and not activated fine-grained solutions. It is shown that when switching to another type of filler, even the same chemical composition, the dosages of all components and their ratio should be adjusted optimally. When switching to another type of mixture preparation, the ratio of components. Practical results obtained by the author provide the required and additional quality indicators, increase the physical and mechanical properties of fine-grained solutions, increase productivity. Theoretically substantiated and experimentally confirmed the effectiveness of the joint use of fine fillers, superplasticizer C-3 or Melflux, the high activity of metakaolin and wollastonite as a part of the binder in the fine-grained mixture and concrete. The data model of the decision support system for analyzing the properties of fine-grained multifunctional concrete has been developed.

scholarly journals Substantination of carbon fiber as an innovative materials for fistening of mining workings of coal mines

2021 ◽  
Vol 64 ◽  
pp. 112-121
Author(s):  
I Sheka ◽  
Ye Tsivka
Keyword(s):  
Mechanical Properties ◽  
Composite Material ◽  
Comparative Analysis ◽  
Composite Materials ◽  
Carbon Fiber ◽  
Coal Mines ◽  
Physical And Mechanical Properties ◽  
Metallic Materials ◽  
Advantages And Disadvantages ◽  
Mine Workings

Purpose. To analyze composite materials and prospects of their use as fastening materials for mining of coal mines.Perform a comparative analysis of the physical and mechanical properties of the innovative material carbon fiber and metallic materials, as well as compare their features. To determine the possibility of using carbon fiber as a fastening material for mining of coal mines. Research methodology. The generalization of physical and mechanical properties of carbon fiber on the basis of its analysis is performed. The features of mechanical properties of carbon fiber, steel and aluminum are compared, which showed that this composite material has the best physical and mechanical properties and it is expedient to use it in the fastening elements of mine workings. Research results. The areas of use of composite materials in industry are analyzed and generalized, and it is concluded that it is better to use carbon fiber as a fastening material for coal mine workings. A comparative analysis of the physical and mechanical properties of carbon fiber and steel is performed, which shows that this composite material has identical (and sometimes even better) properties as metallic materials. The advantages and disadvantages of carbon fiber as a fastening material for mining of coal mines are estimated. It is specified that the restraining factor, today, is the cost of carbon fiber, and later their price will decrease and demand will increase. It is concluded that when using this composite material in the fasteners of mine workings, it is possible to increase the pace of their implementation, reduce the complexity of the work performed and improve working conditions while facilitating the design. Scientific novelty. It is established that carbon fiber as a composite material can be used in the fastening elements of the preparatory workings of coal mines. Practical value. According to the results of the analysis, it is established that carbon plastics can be used in the fastening elements of mine workings, which will promote the development of underground coal mining.

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