Study of integrated system for sampling, analysis and data acquisition for process control of production of aluminium-killed steel between convertor and continuously cast slab
In the production of continuously-cast, low-carbon, aluminium-killed steel, it is important to have information on the amount of soluble and insoluble aluminium present during the various stages of the process quickly enough to ensure proper killing and to predict with reasonable accuracy the aluminium content of the slabs. In this regard a study has been made of steel composition in the various stages of production - tapping, stirring, ladle, mould and slab - to establish the most appropriate measurement and sampling techniques, sampling points and frequency, correlations between steel compositions at various stages in the process from the converter to the slab, and correlations between total aluminium and soluble aluminium. On the basis of the results obtained the analysis of the aluminium in the slab is generally 0.024% lower than in the ladle. Knowledge of the aluminium in the ladle enables action to be taken to ensure that the aluminium content in the slab is to specification. Analysis of aluminium in the mould can serve to classify the final product. The correlation found between the various stages of the process as regards aluminium enable the steelworks to control the continuous casting process by means of appropriate algorithms.
Bibliographic Reference: EUR 11515 IT (1988) 66 pp.
Record Number: 198910295 / Last updated on: 1994-12-01
Original language: it
Available languages: it