Oscillation and Surface Mark Patterns in Slab Casting
Transverse surface cracks are caused by stresses and strains during casting and occur mostly in oscillation marks. Classical theory relates the depth of marks to the negative strip time and predicts the pitch of marks as given by the mould cycle. Measurement of mark spacing and depth under thick slab casting conditions at low casting speeds offers a chance to extend the knowledge into previously unexplored ranges. A large data set of profilometer sections from various casting parameters and some very long samples have been analyzed with respect to mark pitch and depth. The results are contrasted with the classical theory of oscillation marks. Some conclusions on the mechanism of mark formation are drawn.
continuous casting oscillationmarks mould cycle profilometer depth pitch negative strip time casting speed carbon content thick slab casting spectral analysis chill cast surfaces ripple marks meniscus fluctuations
Karl-Hermann TACKE
AG der Dillinger Huttenwerke, P.O.Box 1580, D-66748 Dillingen/Saar, Germany
国际会议
北京
英文
146-153
2008-11-04（万方平台首次上网日期，不代表论文的发表时间）