Notice of RetractionNumerical Simulation of Oil Steel Pipe in Induction Heat Treatment Process
With the rapid development of the oil industry-level demand for steel, the performance of oil steel pipe has put forward higher requirements. Induction heat treatment of steel pipe can improve performance and save cost, so it has been widely used in the steel pipe manufacturing industry. In order to reduce the number of trial-error procedures in plant which usually are long and costly, numerical simulation has been revealed as an important tool in designing the induction heating system. In this paper, the steel pipe temperature distribution in induction heat treatment is simulated considering the material properties. It is shown that the simulation results of the object temperature in good agreement with the different technology demands, which can provide useful information to optimize the whole induction heating process.
Numerical Simulation of Induction Heating Process of Continuous Casting Slab
Compared with traditional blazing furnace, the Continuous Casting-Direct Rolling is an advanced manufacturing steel technology, which can reduce energy waste, decrease pollution and enhance efficiency. The characteristics of steels during induction heating are complex, the change of material properties with temperature makes exact analysis methods very difficult to implement. Therefore, a powerful computer aided numerical tool (i.e., finite difference analysis) is selected to numerically model the induction heating process in this paper. The mathematic model coupling with electromagnetic field and thermal field was established, and it was solved by finite difference method (FDM), thus the slab temperature distribution and its variation with time were obtained, and the characteristics in whole induction heating process were studied. To validate the program feasible, the results were evaluated and compared with experiment results, which showed that the simulation results are reliable and effective. The skin effect in heating process from the two results was studied and demonstrated, the temperature change caused by different parameters such as the induced power intensity and the corner radian were also presented, which indicate that the slab temperature can be heated uniformly through adjusting these parameters, thus the continuous casting slab can meet the rolling requirement.
Rapid determination of the effectiveness of insect resistant packaging
A technique was developed to evaluate the usefulness of odour barriers and to determine the effect of package content in consumer size packages on resistance to infestation by insects. Female Plodia interpunctella (Hubner) could distinguish sealed packets containing food from non-food items as a suitable site for oviposition. Utilization ofthis technique will reduce the time needed to evaluate new materials for use in insect resistant packaging.