Twin roll strip casting method
AssigneePosco
InventorsOh-Seong Kweon, Suk-Kyun Hwang, Seong-In Jeong
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Abstract
There is provided a strip casting method using a twin roll strip casting process in which molten steel is supplied through an injection nozzle to a region between twin rolls rotating in opposite directions to produce a strip having a predetermined thickness and a high degree of edge quality. The twin roll strip casting method includes: performing the casting process by setting a casting thickness to have a minimal value during an early stage of the casting process in which edge bulging occurs; and performing the casting process by increasing the casting thickness to a maximum value after the molten steel reaches a pre-set target temperature as the casting process proceeds.
Claims3
A strip casting method using a twin roll strip casting process in which molten steel is supplied through an injection nozzle to a region between twin rolls rotating in opposite directions to produce a strip having a predetermined thickness and a high degree of edge quality, the twin roll strip casting method comprising:
- performing the casting process by setting a casting thickness to have a minimal value during an early stage of the casting process in which edge bulging occurs;
- and
- performing the casting process by increasing the casting thickness to a maximum value after the molten steel reaches a pre-set target temperature as the casting process proceeds, wherein the minimal value of the casting thickness is set to be within a range of 130% to 150% of a final product thickness to obtain a reduction ratio of 25% or above.
Dependencies are inferred from the claim text.