Abstract: A strand guiding apparatus includes a plurality of pairs of rollers arranged along a moving direction of a strand, a plurality of drive motors for generating driving forces to drive the pairs of rollers, a plurality of worm reducers for transmitting the driving forces of the drive motors to the pairs of rollers while reducing the rotational speed of the drive motors, each worm reducer having a worm extending in a direction orthogonal to an axis of the corresponding roller, and operable to transmit a load occurring at the roller to the corresponding drive motor, and a control unit for controlling the respective rotational speeds of the rollers and/or the respective driving forces of the drive motors based on the load to the drive motors. The reliable control for drive rollers can be attained to have a proper rotational speed without causing a reduction in surface quality and chatter in a strand guiding apparatus for continuous casting equipment using worm reducers.

Abstract: A cast strip withdrawing apparatus includes a plurality of pairs of rolls, and retains and withdraws a dummy bar via a fixed-side roll and pressure-side roll, which face each other, of each of these pairs of rolls. Each of the pressure-side rolls includes a fluid pressure cylinder imparting a dummy bar retaining pressure. A source pressure side fluid line supplying fluid pressure to these fluid pressure cylinders includes: a first pressure-reduction unit, a pressure drop detection unit, a line isolating unit installed on a source pressure side of the pressure drop detection unit, and a bypass unit.

Abstract: A cast strip withdrawing apparatus includes a plurality of pairs of rolls, and retains and withdraws a dummy bar via a fixed-side roll and pressure-side roll, which face each other, of each of these pairs of rolls. Each of the pressure-side rolls includes a fluid pressure cylinder imparting a dummy bar retaining pressure. A source pressure side fluid line supplying fluid pressure to these fluid pressure cylinders includes: a first pressure-reduction unit, a pressure drop detection unit, a line isolating unit installed on a source pressure side of the pressure drop detection unit, and a bypass unit.

Abstract: A strand guiding apparatus includes a plurality of pairs of rollers arranged along a moving direction of a strand, a plurality of drive motors for generating driving forces to drive the pairs of rollers, a plurality of worm reducers for transmitting the driving forces of the drive motors to the pairs of rollers while reducing the rotational speed of the drive motors, each worm reducer having a worm extending in a direction orthogonal to an axis of the corresponding roller, and operable to transmit a load occurring at the roller to the corresponding drive motor, and a control unit for controlling the respective rotational speeds of the rollers and/or the respective driving forces of the drive motors based on the load to the drive motors. The reliable control for drive rollers can be attained to have a proper rotational speed without causing a reduction in surface quality and chatter in a strand guiding apparatus for continuous casting equipment using worm reducers.

Abstract: A mold suitable for continuous metal casting comprising a cavity opened at both ends, in which a vertical cross sectional shape at the inner wall surface of the cavity from a meniscus position to a required region is formed as a restriction portion corresponding to the amount of shrinkage of a charged material from a liquid phase to a solid phase. This can prevent internal cracks at the corners of a cast product formed in the chilled layer. Then, a mold for use in continuous metal casting capable of coping with increasing casting rate is provided.