抄録
The number of oxygen sensors consumed by Japanese steelmaking industries in 1985 was surveyed. 459 110 oxygen sensors were consumed and 24.7% of them were used in converters, 8.3% in ladles, 51.9% in RH-DH, 11.3% in secondary refinings and others and 3.8% in tandishes of continuous casting. The oxygen sensors were used mainly for determining the amount of deoxidizers of molten steel and controling the content of aluminium dissolved in molten steel. New aims to use oxygen sensors were to estimate the content of carbon, phosphorus or manganese in molten steel in converter and precisely to control oxygen content in molten rimmed steel for continuous casting. By comparing the present results with the previous works in 1977, 1980 and 1982, the relation between the improvement of oxygen sensors for steelmaking and the steelmaking technic was discussed.
