The influence of initial blank parameters on railway wheels manufacture with hot plastic deformation process
Journal Title: Metallurgical and Mining Industry - Year 2017, Vol 9, Issue 6
Abstract
The current article aims at simulation of hot plastic deformation process with the objective to determine the influence of initial blank H / D ratio on the cumulative deformation distribution within the wheel blank and position of its axial zone with its macrostructure improper quality. The methods of mathematical simulation have been applied for metal yield at the main stages of wheel blank hot plastic deformation (upset forging, spread and die forging) and simulation is carried out with program “Forge 3”. The research results are in the assessment performed for the deformed metal within the wheel volume and the research has been made with computer simulation of the hot plastic deformation for the wheel blanks with Ø 360 – 520 mm and shape form of H/D = 0.5– 1.6. The research has determined that the optimal initial blank for production of Ø 957-mm-railway wheels is the wheel blank of Ø 450 mm (H / D = 0.84) and its application enables fine workability of the wheel rim (the value of the cumulative degree of deformation is 85%) and that of the wheel disk is 92 %, this practice also excludes occasional defects of macrostructure to be present in the wheel. The scientific novelty of the current paper is in featuring the influence of initial blank geometry on the distribution of cumulative deformation and position of axial low-quality zone of the macrostructure in wheel blanks after hot plastic deformation. It has been found that on condition when wheel blank shape (H / D) is 0.73, 0.84 or 1.11, cumulative degree of deformation in wheel rim change insignificantly and is of 85 %. The practical value of the paper we see in determining the best possible or optimal initial blank for production of railway wheels with Ø 957 mm in diameter (a blank of Ø 450 mm and its H / D = 0.84), application of which provides good industrial results stated above.
Authors and Affiliations
O. I. Babachenko, K. G. Domina, G. A. Kononenko, A. N. Khulin, O. N. Golovko, А. V. Ashkelianets
Keywords
Related Articles
- EP ID EP319812
- DOI -
- Views 130
- Downloads 0
Main Directions and Problems of Fire Safety of the Railway Transport of Ukraine
The article points out the typical elements of the fire safety system and the mechanisms for regulating the provision of fire safety in railway transport. A list of legislation acts is given. They are an information-docu...
Tests to determine the automatic braking systems characteristics of gondola cars of domestic production
Railway transport plays a crucial part in the integrated transport system of the country, considerably influencing economic ties between producers and consumers of products, areas and economic regions of Ukraine with for...
Development of classification for bearing system prestressed structures
The prestressing of structures means various techniques of directional artificial stress regulation or stress-strain state regulation within the structures, performed with the objective to increase their efficiency in th...
Control of the solidification rate of castings from alloy AL9 due to zonal cooling during low-pressure casting
Purpose. To study the effect of zonal cooling, i.e. various cooling means, accelerating the heat sink to the rate of solidification in local thickenings. Metodology. Applied standard methodology for determining zonal coo...
The Analysis on Hydrodynamic Bearings Performance in High-Speed Modules of Wire Rolling Mills
The present article addresses hydrodynamic bearings performance in high-speed modules of wire rolling mills and is searching for the possibilities to increase the reliability of their work. In order to determine the perf...