Abstract: A deflector roll, which changes a travelling direction of a metal strip being threaded, includes a roll main body that is rotatably supported by a roll frame and a sliding member that is provided on an outer surface of the roll main body. The sliding member is configured to have the metal strip wrapped thereon and to be movable along an axial direction of the roll main body while maintaining that wrapped state.

Abstract: Provided are a steel-shape measurement device and a steel-shape correction device. The steel-shape measurement device measures a distance to a detection spot group on a to-be-scanned surface of a steel product with a laser rangefinder 5A that measures the distance through scanning of a steel product S with a laser beam emitted from one laser light source 11 and redirected with a galvanometer mirror 13, and measures a shape of the steel product from obtained measured-distance data. The steel-shape measurement device includes an object having a 45°-0° diffuse reflectance of equal to or lower than 10% as a laser-beam absorber 8 at least one portion within an irradiation range irradiated with a regular-reflected laser beam from a to-be-scanned surface of the steel product.

Abstract: Provided are a steel-shape measurement device and a steel-shape correction device. The steel-shape measurement device measures a distance to a detection spot group on a to-be-scanned surface of a steel product with a laser rangefinder 5A that measures the distance through scanning of a steel product S with a laser beam emitted from one laser light source 11 and redirected with a galvanometer mirror 13, and measures a shape of the steel product from obtained measured-distance data. The steel-shape measurement device includes an object having a 45°-0° diffuse reflectance of equal to or lower than 10% as a laser-beam absorber 8 at least one portion within an irradiation range irradiated with a regular-reflected laser beam from a to-be-scanned surface of the steel product.

Abstract: The present invention relates to a production method for a hot rolled strip in a hot rolling line. An object of the present invention is to ensure stable running of a hot rolled strip on a hot runout table, and to prevent excessive displacement of the hot rolled strip above a pass line, and, for example, a head folding defect and a tail folding defect resulting from the displacement. In the method of the present invention, a fluid jet is squirted above a hot rolled strip conveyed by a hot runout table so as to pass over the hot rolled strip running without touching a surface of the hot rolled strip running on a pass line (a strip-conveying surface of the hot runout table). A strip portion displaced upward from the pass line beyond a predetermined level collides with the fluid jet, and the displacement of the strip portion is thereby corrected.

Abstract: The present invention relates to a production method for a hot rolled strip in a hot rolling line. An object of the present invention is to ensure stable running of a hot rolled strip on a hot runout table, and to prevent excessive displacement of the hot rolled strip above a pass line, and, for example, a head folding defect and a tail folding defect resulting from the displacement. In the method of the present invention, a fluid jet is squirted above a hot rolled strip conveyed by a hot runout table so as to pass over the hot rolled strip running without touching a surface of the hot rolled strip running on a pass line (a strip-conveying surface of the hot runout table). A strip portion displaced upward from the pass line beyond a predetermined level collides with the fluid jet, and the displacement of the strip portion is thereby corrected.

Abstract: A variable-speed passenger conveyer comprises: endless driving chains which disengage the pallets at an acceleration zone and high-speed zone; a screw shaft which has a pitch that changes step by step so as to accelerate or decelerate the palettes; high-speed driving chains which engage the palettes at the high-speed zone to transport the palettes at high speed; and a driving system.