Effect of Melt Superheat on Interfacial Heat Transfer Behavior of Sub-Rapid Solidification Process

As a new technologyTechnology, the ultra-thin strip castingUltra-thin strip casting technologyTechnology has inherent advantages in the production of non-oriented silicon steelSteel, with excellent initial textureTexture and a short processProcess. The effects of different melt superheatMelt superheat (15 ℃, 45 ℃, 65 ℃) on the interfacial heat transferInterfacial heat transfer behavior and wetting phenomenaWetting phenomena of 2.5 wt.% Si non-oriented Electrical SteelNon-oriented electrical steel produced by the ultra-thin strip were studied. The empirical findings indicate a swift surge in interfacial heat flow upon initial interaction between molten steelSteel and the copperCopper matrix. The cooling contraction of the molten materialMaterials prompts the formation of an air gap between the solidified billetBillet shellShell and the copperCopper substrate, resulting in a peak of interfacial heat flow followed by rapid attenuation. Elevating the superheat levels extends the solidificationSolidification period, affording the molten materialMaterials ample time to wet the substrate. This, in turn, fosters interfacial heat transferInterfacial heat transfer and augments the interfacial heat flow.