The effect of stamping temperature in stamping full high-carbon steel products
DOI:
https://doi.org/10.37142/2076-2151/2025-1(54)21Keywords:
finite element method, hot deformation, incomplete hot deformation, extrusion during hot deformation, extrusion during incomplete hot deformation, hollow semi-finished products, forces, specific forces, stresses, deformations, temperature distribution, extrusion scheme.Abstract
Titarenko A., Hornostai V., Sviatskyi Y., Lipodat V. The effect of stamping temperature in stamping full high-carbon steel products
In the engineering production of hollow products, hot and incomplete hot deformation is used. The main technologies used to manufacture hollow products are forging, stamping and specialized metal forming processes (MFP). The main advantages of the MFP processes compared to casting processes are: minimal material consumption, high quality of the material and workpiece surfaces (stamping and rolling processes on rolling mills), shape and dimensional accuracy, high productivity, and the ability to mechanize and automate production processes. MFP at the current stage of development of machine manufacturing technology is one of the main methods for producing parts.
In particular, when manufacturing hollow products in modern conditions, there is an urgent need to determine the parameters of the stamping tooling, its characteristics, technological transitions, temperature conditions for processing semi-finished products and their mutual influence on the finished product. These issues have been considered and continue to be considered by various authors, so the research topic is relevant. In the proposed work, a finite element modeling of the process of extrusion of hollow products from high-carbon steel (AISI-1060) under hot and incomplete hot deformation was performed. A comparison of the processes of reverse extrusion under hot and incomplete hot deformation was also performed with the appropriate formulation of the problem for modeling the process of reverse extrusion under hot and incomplete hot deformation. The analysis of the results of the extrusion simulation allows us to determine the characteristics of the resulting product and reduce the time for process development. The heating temperature of the workpiece for modeling extrusion under hot deformation was 1000 °C, and for modeling extrusion under incomplete hot deformation, the temperature was 700 °C. These temperatures were determined using a state diagram, at a temperature above 760 °C, complete recrystallization of the metal occurs, which is characteristic of hot deformation processes, at a deformation temperature below 760 °C, incomplete recrystallization crystallization occurs, which characterizes an incomplete hot deformation process. The modeling results are the dependence of the extrusion force on the punch displacement, the values of normal stresses, which are used to determine the specific forces on the contacting surfaces between the workpiece and the deforming tool, to determine the temperature distribution at the end of the process of reverse extrusion, and to consider the distribution of the stress and strain state. The press equipment, final shape and dimensions of the semi-finished product are determined.
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