Abstract: A contact device of the present disclosure includes a fixed terminal, a movable member, a regulating member, and a heat transmission structure. The fixed terminal includes a fixed contact. The movable member includes a movable contact and is configured to move between a closed position where the movable contact is in contact with the fixed contact and an open position where the movable contact is apart from the fixed contact. The regulating member is configured to be in contact with the movable contact when the movable member is in the open position. The heat transmission structure is configured to transmit, to the fixed terminal, heat from the movable contact when the movable member is in the open position, through a thermal path including at least the regulating member.

Abstract: In a sliding nozzle comprising three plates consisting of an upper plate, an intermediate plate capable of a sliding movement, and a lower plate, it is intended to suppress adhesion and deposition of metal oxides and others on wall surfaces of inner bores of the three plates. The intermediate plate has: a first inclined portion whose surface defines a slidingly closing directional leading-side wall surface of an inner bore thereof and extends obliquely downwardly in a diametrically contracting direction; a second inclined portion whose surface defines an upper part of a slidingly closing directional trailing-side wall surface of the inner bore thereof and extends obliquely downwardly in a diametrically contracting direction, and a third inclined portion whose surface defines a lower part of the slidingly closing directional trailing-side wall surface of the inner bore thereof and extends obliquely downwardly in a diametrically expanding direction.

Abstract: A contact device of the present disclosure includes a fixed terminal, a movable member, a regulating member, and a heat transmission structure. The fixed terminal includes a fixed contact. The movable member includes a movable contact and is configured to move between a closed position where the movable contact is in contact with the fixed contact and an open position where the movable contact is apart from the fixed contact. The regulating member is configured to be in contact with the movable contact when the movable member is in the open position. The heat transmission structure is configured to transmit, to the fixed terminal, heat from the movable contact when the movable member is in the open position, through a thermal path including at least the regulating member.

Abstract: In a sliding nozzle comprising three plates consisting of an upper plate, an intermediate plate capable of a sliding movement, and a lower plate, it is intended to suppress adhesion and deposition of metal oxides and others on wall surfaces of inner bores of the three plates. The intermediate plate has: a first inclined portion whose surface defines a slidingly closing directional leading-side wall surface of an inner bore thereof and extends obliquely downwardly in a diametrically contracting direction; a second inclined portion whose surface defines an upper part of a slidingly closing directional trailing-side wall surface of the inner bore thereof and extends obliquely downwardly in a diametrically contracting direction, and a third inclined portion whose surface defines a lower part of the slidingly closing directional trailing-side wall surface of the inner bore thereof and extends obliquely downwardly in a diametrically expanding direction.

Abstract: Provided is a tip saw which is provided with saw blades formed at a predetermined interval on an outer periphery of a disk-shaped base metal and a tip securely attached to a base formed on each saw blade, in which flank faces and rake faces of the tips are set in a staggered manner, and the rake faces are provided at a negative angle of inclination in a direction opposite to a rotation direction of said tip saw, and when a workpiece material is thin-walled, the tips are in substantially fan shapes, and adjacent saw blades have a pitch of less than 3.5 mm or less than 3.0 mm therebetween.

Abstract: Provided is a tip saw which is provided with saw blades formed at a predetermined interval on an outer periphery of a disk-shaped base metal and a tip securely attached to a base formed on each saw blade, in which flank faces and rake faces of the tips are set in a staggered manner, and the rake faces are provided at a negative angle of inclination in a direction opposite to a rotation direction of said tip saw, and when a workpiece material is thin-walled, the tips are in substantially fan shapes, and adjacent saw blades have a pitch of less than 3.5 mm or less than 3.0 mm therebetween.