IMPROVING THE QUALITY OF ABRASIVE CUTTING CARBON-CARBON COMPOSITES THROUGH RATIONAL CONDITIONS OF DYNAMIC CONTACT
Journal Title: Вісник Кременчуцького національного університету імені Михайла Остроградського - Year 2018, Vol 1, Issue 112
Abstract
Purpose. Aspects of the processing of carbon-carbon materials with abrasive-containing rotational tools are considered. It is shown that to ensure the high quality of the surfaces obtained, it is necessary to take into account the process-es of contamination of the surface of the abrasive layer with treatment products, as a result of which the conditions of dynamic contact change dramatically and the temperature in the cutting zone increases. It is necessary to constantly improve the ways and methods of processing individual technological elements. Methodology. To predict temperature fields use the basic provisions of heat transfer between the contacting bodies, as well as the law of heat release in the zone of mechanical contact; force interaction is analyzed from the point of view of the theory of contact interactions of elastic bodies. Experimental studies were performed on laboratory equipment LSK-400-5. For the analysis of temperature, the method of pyrometry with certified instruments was used. The study of surface layers and sludge after processing was performed using a PEM-106 I. scanning electron microscope. Results. A mathematical model is proposed for the interaction of elastic bodies with a spot of dynamic contact, which takes into account heat generation due to friction phenomena; The regularities of the formation of temperature fields at the point of contact are given, the relationship between heat generation and pollution of the surface layer of an abrasive tool is established. Originality. For the first time, the features of processing carbon-carbon materials with an abrasive tool, whose cutting surface properties change with time, are analyzed. Practice value. The proposed measures to ensure the rational spot dynamic contact in the cut-ting zone. Reference10, figure 9. It is advisable to use means of active cleaning of the tool surface during machining and the use of a special tool having a certain number of cutting grains on the surface.
Authors and Affiliations
А. Kirichenko, М. Al Ibrahim, V. Schetinin, О. Chencheva
Keywords
Related Articles
- EP ID EP660507
- DOI 10.30929/1995-0519.2018.5.94-102
- Views 40
- Downloads 0
METHODICAL BASES OF COMPUTER SCIENCE AND ENGLISH TEACHERS’ TRAINING: PROBLEMS OF INTERSUBJECT CONNECTIONS IMPLEMENTATION
Purpose. The ways of inter-subject communication realization in the computer science and English teachers’ training have been explored. Methodology. The main methods are analysis, systematization and generalization. Fin...
ANALYSIS OF SCIENTIFIC RESEARCHES IN THE FIELD OF ATMOSPHERE LASER DIAGNOSTIC
Purpose. To determine the prospects for the practical application of lasers, not only for assessing the state of atmospheric pollution, but also for the timely detection of the initial stage of emergence of emergencies (...
TO THE QUESTION OF THE APPLICATION OF THE BILL OF THE ESTABLISHED SPACE IN COMPLEX MINING-GEOLOGICAL CONDITIONS
Purpose. To research the determination of the stress-strain state of the roof rocks on the developed coal seam under the method of controlling the roof in the cleaning face by laying the worked out space. Methodology....
RESEARCH OF CONCRETE MIX THIN LAYERS INTERACTION WITH VIBRATING FORM VERTICAL WALLS
Purpose. Existing methods of definition of rational parameters of vibrating machines do not provide the required accuracy when the thickness of the sealing layer between the vertical walls of less than 50 mm, which is u...
SOCIAL INNOVATION INTRODUCTION PROCESS: ESSENCE, PROBLEMS, WAYS OF EFFECTIVE IMPLEMENTATION
Purpose. Definition of the essence of social innovation introduction process, justification of the end result of this process and the disclosure of the source base of its continuous implementation, and the allocation of...