Abstract
This paper deals with the deformation of precision seamless tubes during the cold drawing process, using Finite Element Methods. The value of strain obtain by stereology measurement of degree grain boundaries deformation are compared with simulation result for each drawing pass. The material chosen was the E235 and E355 steel grade, which is drawn from the initial dimension of Φ 70 × 6.3 mm to the final dimension of Φ 50 × 3.75 mm by two passes. FEM Software DEFORM 2D with the Lagrangian method is used to numerical analyses of the cold drawing process.
Highlights
Cold drawing technology used for manufacturing of precision seamless tube depends on many factors
Cold forming process parameters, tool geometry initial and final tube dimension are selected to ensure a high quality of the tubes
DEFORM 2D and the Lagrangian calculation has been set for numerical simulation of cold drawing technology, according to the tool dimension given on Table 3
Summary
Cold drawing technology used for manufacturing of precision seamless tube depends on many factors. Cold forming process parameters, tool geometry initial and final tube dimension are selected to ensure a high quality of the tubes. In order to achieve the final diameter and wall thickness, tubes are reduced successively in several cold drawing steps. This can be done by either drawing the tube through a die and by adding a plug, which results in better defined wall thickness and inner surface quality. Cold drawing using a fixed plug is a versatile technology that is used usually in the Železiarne Podbrezová ironworks company. The experiment results of this company are compared with the numerical simulation described in this paper
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