Steel Pipe Perforation Finite Element Virtual Simulation Integrated System Development

Every year all over the world the consumption of steel pipe products is near 500 million tons, the development of new technologies in steel pipe production has always been one of the focus of attention in the world steel industry. Metal deformation in rotary piercing process is very complicated, difficult to grasp the law of metal flow, in the absence of conditions of precise systematic analysis, the actual production has to repeatedly test to determine the rolling production process, resulting in high cost products, production cycle length, difficulty in developing new products and so on. Therefore, a systematic study in piercing process of metal deformation, temperature change and the evolution of metal organization has important practical significance and theoretical value. To address these issues this article carried out a series of research work.Making coupled thermo-mechanical three-dimensional rigid-plastic finite element program as the core in rotary piercing process, this paper has developed a virtual simulation system, and the system has perfect Preprocessing and Postprocessing function, and the program structure is modular design, easy to expand in order to further study virtual production systems in wide steel pipe production that the key technology has laid a solid foundation.First of all, for its own characteristics of rotary piercing process, combining advantages and disadvantages of current large-scale general-purpose finite element software analysis, this paper proposed to develop its own approaches for the finite element software.Secondly, this paper deduced three-dimensional rigid-plastic finite element formulation and finite element formulation in solving the temperature field, and developed a systematic depth research in the use of three-dimensional coupled thermo-mechanical rigid-plastic FEM simulation analysis in piercing process involved a number of key technical problems, giving the appropriate treatment methods and formulas.Again, a coupled thermo-mechanical model and the internal organization of prediction model of rotary piercing process were established, and this article carried out a comprehensive simulation.Finally, in view of the above model, typical examples for the application of systems in piercing process are conducted the simulation analysis, and this article obtained the distribution of market value and results in stress field, strain field, velocity field, temperature field, grain size and so on. Through the analysis of results of theoretical calculation and the experiment, this article also verified that the system is correct and reliable.