Method for deoxidizing additives in EN10155 S355J0W weathering steel plate

The operation of adding one or more alloying elements to the liquid steel of EN10155 S355J0W weathering steel plate to make it meet the requirements of the composition of the finished steel is called alloying. In most cases, deoxidization and alloying are carried out at the same time.

A part of the deoxidization agent in the EN10155 S355J0W weathering steel plate is consumed in the deoxidization of the steel and is converted into deoxidization products and discharged. The other part is absorbed by molten steel and plays the role of alloying. Before the deoxidization operation is completed completely, the alloying effect that the alloy added with the deoxidizer is absorbed by the molten steel is called pre-alloying.

Composition control: operation to ensure that the finished steel components of EN10155 S355J0W weathering steel plate meet the standard requirements. The composition control runs through every link from batching to drawing, but the key point is to control the composition of alloying elements. For EN10155 S355J0W weathering steel plate, the composition is often required to be precisely controlled within a narrow range. Generally in the premise of not affecting the performance of EN10155 S355J0W weathering steel plate, according to the middle and lower limit control.