Development of technological restrictions when operating disc polymer-abrasive brushes

Tryshyn, Pavlo; Honchar, Natalia V.; Kondratiuk, Eduard; Stepanov, Dmytro

doi:10.15587/1729-4061.2020.212820

Cited by 2 publications

(2 citation statements)

References 9 publications

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“…At the same time, the effectiveness and, consequently, the laboriousness of the polishing operation is typically determined by the hardness of the treated surface [16]. Mechanization of the polishing operation through the use of polymer-abrasive tools contributes to a significant reduction in its labor intensity [17]. However, in this case, it is necessary to provide a combination of processing modes in which there is no melting of the polymer fiber and overheating of the surface.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Improving the efficiency of finishing-hardening treatment of gas turbine engine blades

Павленко

Kondratiuk

Torba

et al. 2022

EEJET

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This paper considers the influence of the technology to finish and strengthen compressor blade tips made of EP718-ID alloy on the characteristics of the surface quality, surface layer, and bearing capacity. Taking into consideration the special role of the finishing-strengthening treatment in the formation of the quality of the surface layer, various options for blade tip processing were investigated. The blade tips were shaped by high-speed line milling. The finishing-strengthening stage of tip machining included manual polishing and ultrasonic hardening operations with steel balls in various combinations. The basic regularities have been established in the formation of the roughness of tip surfaces, the maximum height of micro-irregularities, the surface microhardness, and the propagation depth of the hardened layer, depending on the combination of finishing-strengthening machining techniques. The results of tests are given for multi-cycle fatigue of blade batches treated according to various variants of the technological process. The efficiency of polishing the surface of the tip after strengthening treatment has been established. To restore the quality characteristics of the surface layer after polishing, it is proposed to perform repeated strengthening treatment. It is shown that the use of double deformation hardening technology with intermediate polishing at the finishing-strengthening stage of blade manufacturing makes it possible to increase the endurance limit from 320 MPa to 400 MPa while increasing durability. Technology for the finishing-strengthening stage of machining blades made from nickel alloys, characterized by significant viscosity, has been devised. It is shown that based on the criteria of minimum labor intensity of machining and maximum endurance of blades, it is effective to use double deformation hardening with steel balls in an ultrasonic field with intermediate polishing.

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Improving the efficiency of finishing-hardening treatment of gas turbine engine blades

Павленко

Kondratiuk

Torba

et al. 2022

EEJET

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“…Industrial application of disc PABTs in polishing surfaces [5,6,7] showed different intensity of filament wear depending on the material of the parts. Attempts to use these tools in automated installations of varying complexity raise the question of predicting the PABT dimensional wear.…”

Section: Introductionmentioning

confidence: 99%

Model of Influence of the Machined Material Properties on Wear of the Polymeric-Abrasive Tool Filaments

Honchar

Tryshyn

Павленко

et al. 2023

Strojnícky Časopis - Journal of Mechanical Engineering

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For polymer-abrasive brush tools (PABT) working on CNC machines it is necessary to correct their wear constantly, since it is much higher compared to the wear of metal tools. Based on the dependence of tool wear on machining parameters for various materials, it is necessary to study the influence of the physical and mechanical properties of the material machined. The purpose of the paper is to study the process of finishing the surfaces of parts made of materials of different types with PABT. The analysis of dimensional wear of disc PABTs during the polishing various materials with certain physical and mechanical properties is provided in the article. The polishing was carried out in rational modes that ensure high quality and productivity of surface treatment. The similarity theory and dimensional analysis were used to assess the influence of the properties of the material machined on the intensity of PABT filament wear. To calculate it, dimensionless complexes were established, which take into account the physical and mechanical properties of the machined materials and evaluate their resistance to the penetration of abrasive grains, the ability of the material to absorb mechanical energy in the process of deformation and destruction under the impact of PABT filaments. The developed model was created for the first time. It made it possible to solve the problem of predicting the degree of dimensional wear of the disc PABT when polishing various materials, including difficult-to-machine ones. Prediction of the intensity of PABT filaments wear allows timely correction of the tool position during machining on CNC machines to ensure a constant pressing of the PABT to the surface being machined. The obtained Км material coefficient takes into account the influence of the physical and mechanical properties of the machined material and then estimates the intensity of PABT filaments wear. The KМ material coefficient can also be used to assess the PABT life and calculate the economic efficiency of the parts finishing treatment at the stage of technology development and the selection of polishing tools.

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Development of technological restrictions when operating disc polymer-abrasive brushes

Cited by 2 publications

References 9 publications

Improving the efficiency of finishing-hardening treatment of gas turbine engine blades

Improving the efficiency of finishing-hardening treatment of gas turbine engine blades

Model of Influence of the Machined Material Properties on Wear of the Polymeric-Abrasive Tool Filaments

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