李峰, 刘平, 董珍, et al. Effect of Dynamic Soft Reduction in Casting on Porosity and Inclusions in Heavy Rail of Steel U75V[J]. Special Steel, 2009, 30(4): 57-58.
李峰, 刘平, 董珍, et al. Effect of Dynamic Soft Reduction in Casting on Porosity and Inclusions in Heavy Rail of Steel U75V[J]. Special Steel, 2009, 30(4): 57-58.DOI:
6 Soft reduction stands are installed at each strand of 6 strands caster for 280 mm×380 mm bloom. The soft reduction in height of bloom is ≤8 mm wih reduction rate≤1.5mm/m.Results showed that with suitable process conditions and using dynamic soft reduction technology
the center porosity of bloom was improved led to obviously improve the center stripe at waist of heavy rail of steel U75V
and the rejection rate by non-destructive testing decreased from 0.206% to0.095% due to improvement of distribution of inclusions in bloom.