The Research of the Morphology and Mechanical Characteristics of Electric Bimetallic Contacts

Haikova, Tetiana; Puzyr, Ruslan; Savelov, Dmytro; Drahobetskyi, Volodymyr; Argat, Roman; Sivak, Roman

doi:10.1109/paep49887.2020.9240847

Cited by 26 publications

(6 citation statements)

References 31 publications

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“…Here 𝑚 𝐵𝐵 -total explosive charge mass; D -detonation speed; h -characteristic explosive charge thickness; 𝜌 0 -initial charge thickness of the explosive; k -detonation adiabatic exponent; coefficient, which determines the active part of the explosive [28,29]. In this case, the value of the "a" coefficient for a flat explosive charge from expression (5) will have the form of:…”

Section: Materials and Results Of The Researchmentioning

confidence: 99%

Modeling of High Module Power Sources Systems Safety Processes

Savchenko

Shapoval

Kuziev

2022

MSF

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The paper provides an assessment of the safety processes of high-modulus energy sources systems during the initiation of flat and cylindrical high-modulus energy sources. The expressions, which establish the relationship between the parameters of flat and hollow cylindrical charges of explosives under the only condition of equality of the developed pressure pulse on the surface of the charge of explosives, provided all other things being equal, were obtained. In contrast to the earlier studies, which assert the existence of a direct relationship between the parameters during the initiation of flat and cylindrical surfaces, the current study demonstrates energy consumption during the initiation of cylindrical surfaces is higher than the initiation of flat surfaces, all other things being equal.

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Section: Materials and Results Of The Researchmentioning

confidence: 99%

Modeling of High Module Power Sources Systems Safety Processes

Savchenko

Shapoval

Kuziev

2022

MSF

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“…The data in column 6 shows that the workpiece deforms along its entire perimeter. This is not characteristic of the classical drawing method, where the bottom of the part is practically not deformed, and mainly the workpiece flange is subjected to plastic strains [36,39]. When turning, during shaping, the zone of transition of the wall to the bottom of the part and the workpiece flange are subjected to the greatest strains.…”

Section: Discussionmentioning

confidence: 99%

The assessment of the process of drawing a cylindrical workpiece without pressing with alternating strain of the workpiece flange

et al. 2021

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The development of a method for drawing cylindrical parts without pressing the workpiece flange, which allows reducing the cost of production due to the use of dies without a fit ring and single-acting presses. The performed research revealed that this method results in obtaining cylindrical parts with drawing ratios typical for pressing drawing. In this case, the different thickness of the finished product is several times less compared with the same type of semi-finished products obtained by drawing with a fit ring. Steel, aluminum and copper workpieces were researched. The best results were shown by more plastic materials. This method is not applicable for materials with the less than 0.25 mm thickness.

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“…At the same time, researchers [15] note that during their one-time evaluations, a more effective emulsol than "Quakerol 671" was not found for the conditions of 1700 CRS of OJSC "AMT". Electricity consumption during rolling depends not only on the type of emulsion used, but also on many factors: on the setting of inter-stand tension [1,16], the realized stress-strain state of the material [16,17], rheological properties of steels [18], efficiency of intermediate recrystallization annealing [19] and other methods of processing rolled steel [20], structural features of the rolling stock and its working and conductive elements [21], technological state and obsolescence of electrical equipment designs [22]. Indicators of power quality [23], which depends on the efficiency and stability of workshop converters and transformers [24], have a significant influence on the stability of the electrical equipment of heavy-loaded machines, and, as a rule, the controllability of rolling mills.…”

Section: Literature Reviewmentioning

confidence: 99%

Influence of emulsols type on energy-power consumption and surface contamination at DC01 steel cold rolling on the continuous four-stand mill

Kukhar

Malii

Spichak

2022

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The article presents the results of experimental and industrial tests of physical and chemical parameters of the experimental emulsol "Quakerol". According to the physicochemical parameters the experimental emulsol "Quakerol" differs from the used emulsol "Universal-1TS" by higher lubricating properties. Operating modes of stand and coiler electric motors of tandem mill at rolling of melts from experimental emulsol "Quakerol" lubricated with emulsol "Quakerol" and serial emulsol "Universal-1ТС" lubricated with conservation oil "OK-2" at LPTs were analyzed. The results of analysis of loads at rolling of strips with 0.68×1000 mm cross-section from pre-rolled sheet with thickness of 3.0 mm showed that the values of average total loads on stand motors and coiler of four-stand mill 1680 were higher when using experimental emulsol "Quakerol". The comparative analysis of experimentally obtained data on influence of technological conditions of cold-rolled coils production at four-stand continuous tandem mill 1680 with using emulsols "Quakerol" and "Universal-1TS" on rolling power parameters, power consumption and contamination of DC01 flat carbon steel surface is presented. Multiple regression equations were obtained to describe power consumption during rolling using different emulsions, the values of cross-sectional area were taken as a varying factor. Specific power consumption and average total load on stands and coiler motors during rolling with the use of emulsion prepared from experimental emulsion "Quakerol" and emulsion prepared from standard emulsion "Universal-1TS" were estimated. The reasons of higher specific power consumption during LCL operation with the experimental emulsion were analyzed. A quantitative assessment of contamination of the surface of steel samples using the experimental emulsion "Quakerol", oil "OK-2" and standard emulsion "Universal-1TS" is given. The necessity of further tests to determine the optimal concentration of emulsion from "Quakerol" to ensure the reduction of energy costs per ton of cold rolled steel has been substantiated. The practical significance of the work lies in the development of methods for analysis of lubricants with regard to the prospects of using "Quakerol" emulsion instead of "Universal-1TS" emulsion in order to improve the quality and increase the productivity of the cold-rolling shop

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The Research of the Morphology and Mechanical Characteristics of Electric Bimetallic Contacts

Cited by 26 publications

References 31 publications

Modeling of High Module Power Sources Systems Safety Processes

Modeling of High Module Power Sources Systems Safety Processes

The assessment of the process of drawing a cylindrical workpiece without pressing with alternating strain of the workpiece flange

Influence of emulsols type on energy-power consumption and surface contamination at DC01 steel cold rolling on the continuous four-stand mill

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