The present invention provides a far-infrared radiation heating furnace for steel sheets for hot stamping configured to inhibit thermal deformation of the furnace body and furnace body parts. A far-infrared radiation heating furnace (10) includes heating units (13-1) to (13-6), a ceiling unit (19), and a furnace body frame (12) made of steel, the heating units including: blocks made of a thermal insulation material, the blocks being disposed around horizontal planes of spaces for accommodating the steel sheets for hot stamping; and far-infrared radiation heaters positioned above and below the steel sheets for hot stamping to heat the steel sheets for hot stamping, the furnace body frame being disposed around the heating units and the ceiling unit. The furnace body frame includes spacers (17-1) to (17-7) that space the heating units and the ceiling unit apart from the furnace body frame and support them.
3 transformation temperature to 950° C. Steel sheet support members are mounted to the heating units to support the steel sheets for hot stamping by point contact or line contact with the steel sheets for hot stamping.
F27B 5/06 - Details, accessories or equipment specially adapted for furnaces of these types
F27B 5/02 - Muffle furnacesRetort furnacesOther furnaces in which the charge is held completely isolated of multiple-chamber type
F27D 5/00 - Supports, screens or the like for the charge within the furnace
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
F27B 9/06 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and chargeFurnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity electrically heated
F27D 11/12 - Arrangement of elements for electric heating in or on furnaces with electromagnetic fields acting directly on the material being heated
3 transformation temperature to 950° C. The furnace includes: multiple-staged heating units that accommodate steel sheets, each heating unit formed by thermal insulation materials disposed around the periphery; and far-infrared radiation heaters positioned above and below the heating units. A far-infrared radiation heater is received by first metal strips. The first metal strips are disposed so that their strong axis direction approximately corresponds to the direction of gravity and supported by support pieces so as to be expandable and contractible in a longitudinal direction by thermal expansion or thermal contraction. The support pieces are disposed outside the thermal insulation materials in the heating units and a ceiling unit.
Provided is a far infrared radiation multistage type heating furnace for steel plates for hot pressing provided with flexible far infrared radiation heaters that do not bend during heating from the Ac3 transformation temperature to 950°C. The far infrared radiation multistage heating furnace has multiple stages of heating units formed from a thermal insulation material disposed around the periphery thereof and accommodating steel plates for hot pressing, and far infrared radiation heaters disposed in the upper part and lower part of the heating units. A far infrared radiation heater (14-1) is mounted on a plurality of first metal bands (26) and is disposed substantially horizontally. The plurality of first metal bands (26) is provided such that the direction of the strong axis substantially aligns with the direction of gravity, and is supported by supporting material (27) so as to be freely expandable and contractible because of thermal expansion or thermal contraction in the longitudinal direction. The supporting material (27) is disposed more to the outside of the heating unit and a ceiling unit than the thermal insulation material.
The purpose of the present invention is to provide stable support over an extended period of time to a hot-pressed steel plate which is accommodated within a far-infrared multistage heating furnace, using steel plate support members that have a small planar projected area and minimized thermal deformation. This far-infrared multistage heating furnace has: a heating unit and a ceiling unit provided in multiple stages in the vertical direction, the heating unit and ceiling unit accommodating a hot-pressed steel plate comprising an aluminum-plated steel plate or a zinc-plated steel plate; and far-infrared heaters arranged inside the heating unit and the ceiling unit, the far-infrared heaters heating the hot-pressed steel plate to at least the Ac3 transition point but no higher than 950°C. Within the heating unit are arranged steel plate support members for supporting the hot-pressed steel plate through point contact or line contact against the hot-pressed steel plate, the steel plate support members being supported so as to be capable of expanding and contracting in the longitudinal direction due to thermal expansion or thermal shrinkage.
Provided is a quenching apparatus which can achieve improved quenching performance. A circulation device (50) in the quenching apparatus collects a cooling solution that has been used for quenching, and supplies the collected cooling solution to a defoaming tank (431). A laminar flow weir (433) in a defoaming device (4) partitions the defoaming tank (431) into a laminar flow tank (434) and a shallow flow tank (435), and is located at a level below the side wall of the laminar flow tank (434). The cooling solution is supplied from the circulation device (50) into the laminar flow tank (434), and the cooling solution is poured into the shallow flow tank (435) from the laminar flow tank (434) through the laminar flow weir (433). A filter (432) has a plate-like or sheet-like form, has a network structure, and covers an opening located at the bottom of the shallow flow tank (435). The liquid level in the shallow flow tank (435) is below the height of the laminar flow weir (433). A supply tank (441) stores the cooling solution that has passed through the filter (432), and supplies the cooling solution to a cooling device that ejects the cooling solution onto a metallic material.
The present invention provides a far infrared heating furnace for a steel plate for hot pressing wherein thermal deformation of the furnace body and various parts of the furnace body is suppressed. A far infrared heating furnace (10) is provided with: heating units (13-1 - 13-6) and a roof unit (19) having blocks formed from thermal insulation material and disposed encompassing a space for accommodating a steel plate for hot pressing in a horizontal plane, and far infrared radiation heaters disposed above and below the steel plate for hot pressing for heating the steel plate for hot pressing; and a steel furnace body frame (12) disposed surrounding the heating units and roof unit. The furnace body frame is provided with spacers (17-1 - 17-7) for separating and supporting the heating units and roof unit from the furnace body frame.
The purpose of the invention is to provide a circular blade and/or spacer separating mechanism, a handling robot, a storage stand, and a separation method with which it is possible to retrieve only the number of circular blades or spacers intended to be retrieved using the handling robot and the circular blades and spacers that do not need to be separated can be reliably left on the storage stand. The separating mechanism is characterized: in being provided with a handling robot, which has fingers (F1, F2) that grip a circular blade (C1), and a holding means (4) for holding the position of a circular blade (C2) that is adjacent to the circular blade (C1) that is to be gripped by the fingers (F1, F2); and in the handling robot separating the circular blade (C1) that is being gripped by the fingers (F1, F2) by sliding same along the end face (CE2) of the adjacent circular blade (C2) that is being held by the holding means (4).
B23D 33/00 - Accessories for shearing machines or shearing devices
B23D 19/06 - Shearing machines or shearing devices cutting by rotary discs having rotary shearing discs arranged in co-operating pairs with several spaced pairs of shearing discs working simultaneously, e.g. for trimming or making strips
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