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Wednesday, 10 September 2014

Continuous Casting

Continuous Casting Points : Continuous Casting Process Continuous casting use to harden the majority of 750 million tons of steel created in world all year. Similar to mainly commercial processes, continuous casting involves various difficult interacting phenomena. The majority previous advances have been based on experiential facts gained as of testing by the process. To more optimize the design and get better the continuous casting process, precise models are becoming ever more powerful tools to gain extra quantitative insight. Best models for this purpose are mechanistic models based on fundamental laws and phenomena which govern the method, because they are extra reliably extended beyond the variety of data used to adjust them.

In continuous casting process, molten steel flows as of a ladle, through a tundish into mold. It must be protected as of exposure to air with a slag cover over every vessel with by ceramic nozzles among vessels. Once in mold, molten steel freezes against water-cooled copper mold walls to type a solid shell. Drive rolls lower in machine constantly remove shell as of mold at a rate or “casting speed” that matches flow of incoming metal, so process preferably runs in stable condition. Below mold exit, the solidifying steel shell acts as a container to support remaining liquid. Rolls hold up steel to reduce bulging due to ferrostatic pressure. Water and air mist sprays cool surface of strand among rolls to maintain its surface temperature until molten core is solid. After center is totally solid at the metallurgical length the strand can be torch cut into slabs.

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