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The effect of process parameters on punching and extrusion process of large diameter white copper alloy pipe was studied by three-dimensional finite element analysis

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Document pages: 10 pages

Abstract: With the rapid development of shipbuilding and power industry, the demand for high-performance white copper alloy pipes is also increasing. The main processing methods of the alloy include semi-solid ingot casting and hot extrusion deformation. There are many defects in the hot extrusion process of large-diameter white copper alloy pipe, resulting in considerable problems. Therefore, the numerical simulation of hot extrusion of white copper alloy pipe before actual production is of great significance to reasonably determine the deformation parameters. In order to obtain the influence of process parameters on the punching and extrusion process of large-diameter white copper alloy pipe, the metal flow law under different deformation conditions was simulated and analyzed by electromagnetic pulse methodoying a 3D FEM code. The results showed that piercing speed had no obvious influence on the cupronickel alloy billet. However, the friction had significant influence on the piercing process of cupronickel alloy billet: with the increase of friction coefficient, the temperature and the load increased.

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