The oxygen content of molten steel at the end point of blowing is also known as the oxidizability of molten steel. The oxidizability of molten steel has an important impact on the quality of steel, alloy absorption rate, and deoxidation of boiling steel.
The main factors affecting the oxygen content of molten steel are:
(1) The oxygen content in steel is mainly controlled by the carbon content. If the carbon content is high, the oxygen content is low; When the carbon content is low, the oxygen content is correspondingly high; They follow the law of carbon oxygen balance.
(2) The residual manganese content in molten steel also affects the oxygen content in the stainless steel machining. When the wc is less than 0.1%, the effect of manganese on oxidation is relatively significant. If the residual manganese content is high, the oxygen content in the steel will decrease.
(3) The high temperature of molten steel increases the oxygen content of the steel.
(4) The operating micromachining also has an impact on the oxygen content of molten steel. For example, with high gun position or low oxygen pressure, weakened stirring in the molten pool will increase the oxygen content of the molten steel. When wc<0.15%, supplementary blowing will increase the oxygen content of the molten steel; Adding temperature regulators such as iron ore or oxide scale before carbon pulling can also increase the oxygen content of the molten steel. Therefore, in order to obtain a normal oxygen content in molten steel, the first step is to stabilize the blowing operation.
Link to this article：Factors affecting oxygen content in molten steel
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