Title: EFFECT OF MELT FLOW ON INITIAL SOLIDIFIED SHELLOF CONTINUOUS CAST STRAND
Abstract:To estimate quantitatively the effect of melt flow in mold and superheat as well as the mold heat transfer resistance,on the unevenness of initial solidified shell,the water cooled copper plate dippi...To estimate quantitatively the effect of melt flow in mold and superheat as well as the mold heat transfer resistance,on the unevenness of initial solidified shell,the water cooled copper plate dipping test has been used to measure the thickness of solidified shell and dendrite angle under various casting conditions.The reason of white band formation in the solidified shell in the mold has been studied by means of water modeling test and the analysis of the solidified microstructure of practical CC slab and liner analysis of white band has been performed by EPMA.Main results are as follows:①The thickness of solidified shell decreases and the unevenness is increased with the increase of flow velocity and superheat of the melt;②Slow cooling mold can effectively reduce the unevenness of initially solidified shell of hypoperitectic steel;③The white band existing under the surface of CC slab(6~10 mm)is formed at 250~450 mm from meniscus,and resulted by the jet flow from submerged nozzle.Read More
Publication Year: 1998
Publication Date: 1998-01-01
Language: en
Type: article
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