Development of calculation schemes for the combined extrusion to predict the shape formation of axisymmetric parts with a flange
Journal Title: Восточно-Европейский журнал передовых технологий - Year 2018, Vol 3, Issue 1
Abstract
<p>We have developed calculation schemes for the process of combined radial-reverse extrusion of parts with a flange. Based on the energy method, we have derived formulae for calculating the reduced pressure of deformation and a phased increase in the dimensions of a semi-finished product. Relevance of the research is based on ensuring the simplification of estimation of the application of a given deformation process to obtain parts with a required configuration. In addition, we have proved the efficiency of determining the limit of using the derived calculation scheme for ratios 2h<sub>1</sub>R<sub>2</sub>/(R<sub>2</sub><sup>2</sup>–R<sub>1</sub><sup>2</sup>)<1.</p><p>We analyzed a product range manufactured at the enterprises of machine-building and instrument-making, which includes a significant number of hollow parts with flanges and branches of various shapes. It was substantiated that the use of combined extrusion schemes in the manufacture of parts of the type «a cup with a flange», when compared to employing simple deformation techniques, improves technological possibilities of the process. That is achieved through the reduction in energy costs, as well as in the number of technological transitions, and through making the shape of the parts obtained more complex. We confirmed the lack of proper studies into technologies for the implementation of combined extrusion schemes and the absence of appropriate technological recommendations. We determined the power mode of extrusion that corresponds to reality and estimated a possibility to control the outflow of metal at deformation. A study was conducted into the process of cold combined extrusion of hollow parts with a flange; the calculation schemes of the process were proposed. We modeled the process of combined extrusion based on the experimental-analytical method and established patterns in the shape formation of parts with a flange due to the geometrical and technological parameters. Data were acquired on the phased form change in a semi-finished product in the process of deformation. It was confirmed that the proposed models simplify the development of technological recommendations to determine the power mode of extrusion and to control the outflow of metal during deformation process.</p>
Authors and Affiliations
Kateryna Vlasenko, Natalia Hrudkina, Irina Reutova, Olena Chumak
Keywords
Related Articles
- EP ID EP527954
- DOI 10.15587/1729-4061.2018.131766
- Views 62
- Downloads 0
Constructing and exploring the model to form the road map of enterprise development
<p>The study addresses the task on determining the optimal road map for the enterprise development – the choice of the sequence of projects and their parameters, which would ensure the achievement of the goal taking into...
Research of the treatment of depleted nickelplating electrolytes by the ferritization method
<p>Considerable attention has been paid recently to the development of comprehensive recycling of industrial wastewater, which provides for an appropriate degree of purification for both organization of circulation water...
Development of lean titaniumalloyed aluminium alloy for electrotechnical purposes
<p>The influence of titanium amount and pouring temperature on the structure and properties of lean-alloyed alloy was explored. It was determined that lean titanium-alloyed aluminum alloys have better mechanical and elec...
Development of methods to control quality of the structure of cross-wound packages
<p>The process of winding is one of the principal processes in the textile industry. Quality of the formed packages largely defines the quality of the finished product in the textile industry, as well as labor productivi...
Establishing the dependence of pollutant concentration on operational conditions at facilities of an oilandgas complex
<p>Environmental impact of gas burning parameters during operation of the gas pumping units of compressor stationswas studied. Simulation of the NO<sub>2</sub>, NO and CO dispersion zone at the excess air coefficients of...