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 model approaches for in-line strip induction heating
This paper describes the experience of the authors in numerical modeling of induction system with movable strips. Several numerical approaches have been applied to predict a “quasi” steady-state thermal fields which naturally describes the temperature field in the strip when the induction heating applied. The approaches have been analyzed to prove their advantages and shortcomings to be applied for coupled electromagnetic and thermal numerical models of induction heating. The approaches are illustrated with examples of two concepts of the induction heating design which are widely utilized in in-line strip heating.
Conception of a Language Learning Environment Based on the Communicative and Actional Approaches
This paper's aim is to give a conceptual framework about the conception of a Computer Assisted Language Learning environment based on the communicative and actional approaches. In this environment, the learner is implicated in a task that he/she has to complete by interacting with a partner using his/her language competencies. Given a task, different ways exist to accomplish it and the different competencies of the learner can then be solicited with different types of interaction. Works accomplished in human computer dialogue give models to manage this interaction.