Study into the rolling of a double-layered powdered core in a metallic sheath
Journal Title: Восточно-Европейский журнал передовых технологий - Year 2018, Vol 6, Issue 1
Abstract
<p>We have developed an analytical model of the stressed-strained state of the two-layered powdered core in a metal sheath in the deformation zone when fabricating a composite material by rolling. Based on the constructed mathematical model, we performed a theoretical analysis of the influence of starting parameters on the course of the process of rolling a composite material. By using a finite element method, we simulated the process of rolling diverse powders in a metal sheath. The result of the theoretical research is the established effect of a material and the thickness of a sheath on the geometrical characteristics of a deformation site, as well as the influence of an asymmetry factor on a change in the zone of plastic shape alteration and the density of a powdered material. We have determined the distributions of normal contact stresses and relative density over a deformation site under different clamping. We calculated the components of rolling forces under deformation of a powdered core and a metal sheath. It was established that an increase in the thickness of a sheath leads to an increase in energy-force parameters of the process. In this case, the component of a rolling force due the sheath deformation can be both comparable to the component from the deformation of a powdered core, and exceed it by several times. The undertaken experimental study into the process has confirmed the validity of the constructed mathematical model that could be applied for determining the optimal technological regimes for rolling a 2-layer powdered core in a metal sheath.</p>A technology for rolling a 2-layer powdered core in a metal sheath has been proposed, which includes rolling in two runs, filling the metal sheath consistently with components. It was established that at rolling based on the proposed technology the core’s relative density increases under the same rolling modes. In this case, the size of a powder’s fraction is retained, which is a prerequisite for a given production technology
Authors and Affiliations
Eduard Gribkov, Olena Berezshnaya, Svetlana Hurkovskaya
Keywords
Related Articles
- EP ID EP528247
- DOI 10.15587/1729-4061.2018.150081
- Views 72
- Downloads 0
Refinement of the mathematical model of frequency converter cable branch with a singlephase short circuit
<p>The mathematical model of the frequency converter cable branch as a part of the mine section power network with a single phase-to-ground fault is clarified. The model takes into account a discrete nature of the output...
Development of vehicle speed forecasting method for intelligent highway transport system
<p>Interaction of vehicles on an intercity highway is considered. The vehicle control model here is idealized, close to the 4th generation automated intelligent transport system. Each vehicle has the desired motion progr...
Study of the oxidation kinetics of nitrite ions by potassium ferrate(VI)
<p>The oxidation kinetics of nitrite to nitrate ions by potassium ferrate(VI) in a wide range of pH, from neutral to alkaline medium has been studied. Two series of kinetic experiments based on the different technologies...
Studying the railroad track geometry deterioration as a result of an uneven subsidence of the ballast layer
<p>A method for calculating impairment of the track geometry under influence of dynamic loads in the course of passing the track unevenness by the rolling stock was developed. The method takes into consideration interrel...
Effect of quench and temper on hardness and wear of HRP steel (armor steel candidate)
<p>The need for quenched and tempered steel increased, especially for the manufacture of the combat vehicle components. This steel is classified as high-strength and hardness and is bullet-resistant steel (armor steel)....