When it comes to steel design and fabrication, the metal solidifies instantly and begins to form a solid skin. The steel is then pulled down by a set of rollers and extractors, it continues to solidify thanks mainly to wall water jets. The calming of the wild steel that will consume dissolved oxygen in the steel. For that, one throws in the liquid steel of aluminum (for the flat products) or of silicon (case of the long products) which, by being oxidized, will transform the dissolved oxygen in oxides;
With degassing, the steel will pass through a vacuum passage intended to perfect the decarburization initiated to the converter (in this case, it is necessary to maintain, previously, a minimum of dissolved oxygen), the dehydrogenation or sometimes denitruration. The adjustment of the pocket slag so that it has the capacity to absorb impurities, such as oxides.
Because of intense cooling, the metal undergoes a thermomechanical action as it travels through the continuous casting machine.
