曹磊, 马保振, 黄伟青, et al. Test and Practice on Capping Process of 250 mm x 2 000 mm Casting Tail Slab of Nb-V-Ti Microalloying Low Alloy Steel SG610E[J]. Special Steel, 2021, 42(3): 31-34.
曹磊, 马保振, 黄伟青, et al. Test and Practice on Capping Process of 250 mm x 2 000 mm Casting Tail Slab of Nb-V-Ti Microalloying Low Alloy Steel SG610E[J]. Special Steel, 2021, 42(3): 31-34.DOI:
The capping technology of low alloy steel SG610E 250 mm x2 000 mm continuous casting tail slab is studied. The results show that with traditional water-cooling capping process
there are severe shrinkage cavities at distance 2 000 mm from the slab end;while with the low-speed casting anhydrous capping
the distance of slab shrinkage cavities decreases to 900 mm
but the slab surface temperature drops into the third brittle zone due to the long duration of ≤0. 2 m/ min casting speed
which lead to transverse cracks on Nb-V-Ti microalloying low alloy steel casting tail slab. Therefore
a non-stopped-pouring speed casting 0.4 m/min anhydrous capping technology for wide and thick slab is developed which improves the internal quality and reduces the surface crack incidence of the steel tail slab.