Starting method of continuous casting in slab continuous casting and method of setting dummy bar before starting casting of slab continuous casting

摘要

The present invention provides a start method of continuous slab casting in which continuous casting can be smoothly started by facilitating extraction of a dummy bar during casting start of slab continuous casting.;Side plate 2 of the mold 10 is sandwiched by the long-side plate 1 and the short-side plate 2 is adjustable in the width direction of the slab, Side plate 2 is held vertically so that the gap between the short-side plate 2 and the dummy bar 4 is adjusted to 1-3 mm, the sealing material 5 is filled The molten steel is injected and then the dummy bar 4 is pulled downward and at the time when molten steel is not introduced into the space between the formed solidifying cell 6a and the plates 1 and 2, Side is moved in the outward direction and a taper in the downward direction is given to perform continuous casting.