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In the electroplastic wire drawing process, the drawing force is reduced with the application of an electric current. The drawing force drop is the result of a combination of various factors. The objective of this article is to build a theoretical formula between the electroplastic effect and the drawing force. Based on existing electroplastic effect theory and experimental results, the mechanical...
In the produce of HFIW(High frequency induction welding) pipe, HAZ(Heating area zone) temperature distribution is the most decisive factor of welding quality. In this paper, HFIW pipe production system, based on comprehensive consideration of the magnetic field boundary conditions and material properties of the highly nonlinear and other issues, the establishment of a tube of three-dimensional finite...
The main objective of this study is to obtain the reasonable range of offset in tube roll-cutting process by analyzing the effect of the process kinematics. For this aim, the roll-cutting processes are simulated. Due to the existence of the offset, the relative feed speed of blade is not constant. In this paper, the relationship between the radial feed speed shock of a blade relative to the tube and...
To explore the methods for improving the mechanical properties and increasing the service life, deeply analyses were carried out on the forming process of hexagon hollow steels. This paper established the three-dimensional model, calculated the strain field, stress field, temperature field by rigid-plastic FEM, built up the microstructure evolution model based on physical metallurgy theories for the...
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