Abstract:
An apparatus and a method for the treatment of a flat steel product, taking place in throughput. The apparatus includes an indirectly heated annealing furnace chamber, a conveyor device for continuously conveying the flat steel product over a conveyor path leading from an entry to an exit of the annealing furnace chamber, and nozzle arrangements for feeding atmosphere gas, which is reactive in relation to the flat steel product, into the annealing furnace chamber. A controlled treatment of the flat steel product includes a first nozzle arrangement, from which a gas jet induces a first gas flow towards the entry of the annealing furnace chamber and sweeping over the surface of flat steel product to be treated. A second nozzle arrangement includes a gas jet which induces a second gas flow directed towards the exit of the annealing furnace chamber and sweeping over the surface of flat steel product.
Abstract:
In a gas-intake-port array structure, which enables any temperature fluctuation during conveying time of a printed circuit board, a semiconductor wafer or the like to be reduced and allows the printed circuit board and the like to be very uniformly heated or cooled, a nozzle pattern P2 is arranged to be line symmetry with a nozzle pattern P1 in one upper or lower divided section of a nozzle layout region of the nozzle cover 3 relative to a center portion that is orthogonal to a conveying direction, as shown in FIG. 1. In order for the arrangement patterns diagonally arranged in the nozzle layout region to become identical, the nozzle pattern P1 is arranged to be line symmetry with the nozzle pattern P2 in the other upper or lower divided section. Intake ports 3b, 3c and 3d each having a predetermined opening width are arranged between two blowing nozzles 2 or more and across a first row thereof and plural other rows having different phases, in order to circulate the gas blown from the blowing nozzles 2. Widths of the intake ports 3b, 3c and 3d are set so that they are gradually become narrower with increasing distance from the center portion.
Abstract:
A furnace for continuously graphitizing carbon fibers includes a supply unit configured to supply an object to be treated made of carbon fibers, a chamber in which the supplied object to be treated is graphitized, and a recovery unit configured to recover the graphitized object to be treated, in which the chamber includes a preheating zone in which the supplied object to be treated is preheated, and an electric heating zone in which the preheated object to be treated is electrically heated, and the electric heating zone includes a pair of electric rolls across which the preheated object to be treated is strung, and a DC power source that is connected to the pair of electric rolls and applies a current between the pair of electric rolls through the preheated object to be treated that is strung across the pair of electric rolls.
Abstract:
An indirect heating furnace heats a substance in a reaction tube with a high-temperature combustion gas without contact between the substance and the combustion gas. The reaction tube is a stationary ceramic tube. A combustion device for supplying said heating high-temperature combustion gas into the furnace in comprised of at least one pair of regenerative burners.
Abstract:
A heating furnace includes a target space (212a) in which a burning target is disposed, and a furnace main body (212) that surrounds the target space. The heating furnace includes one or more closed gas heaters having an introduction hole configured to introduce a fuel gas into the main body, a combustion chamber in which the introduced fuel gas is combusted, a discharge section to which an exhaust gas generated by combustion is guided, a radiation surface heated by the exhaust gas flowing through the discharge section or combustion in the combustion chamber and configured to transfer radiant heat to the burning target, and an exhaust hole configured to exhaust the exhaust gas that heats the radiation surface to the outside of the main body, and disposed in the furnace main body, and an exhaust heat transfer section (an insulated pipe (222a)) in communication with the exhaust hole of the closed gas heater and to which the exhaust gas is guided. In addition, the exhaust heat transfer section is installed at any portion in the furnace main body except for a radiation space (212b) formed between the closed gas heater and the burning target disposed in the target space and configured to transfer the radiant heat to the burning target.
Abstract:
A furnace (12) and a method for heating roll conveyed glass sheets by electric resistance radiant heating and forced convection heating by hot air jets that also entrain hot air within the furnace. A hot air distributing system (86) includes upper and lower arrays (90) of hot air distributors (92) that are constructed to effectively supply the convective heating. The hot air distributors (92) have heat exchangers (96) that heat the pressurized air that provides the hot air jets. The heating can be performed on both uncoated and coated glass sheets and furnace (12) conveys the glass sheets either in an oscillating manner or a continuous one direction manner during the heating.
Abstract:
The self incinerating oven has a housing provided with opposed radiant walls which define an oven cavity. Each radiant wall is heated by heated air from a combustion chamber. Polluted air, containing volatile, organic compounds (VOC's), from the drying of painted objects in the oven cavity, is directed from the oven cavity, through ducts to suspended, recuperative, heat exchanger tubes in the incineration chamber. The preheated, polluted air, at 800.degree. F.-1000.degree. F. emerging from the heat exchanger, is discharged adjacent to a linear gas burner, in the combustion chamber. The VOC's are burned by the burner and part of the heated air and products of combustion are directed to heat one of the radiant walls.
Abstract:
A manufacturing oven for and a method of baking a workpiece presenting a transverse orientation relative to the oven, includes dual radiant and convection heating sources operable to uniformly heat the workpiece by focusing convection heating air towards desirous parts of the workpiece, and preferably includes a chamber, a high emissivity false floor, at least one radiant heating element beneath the floor, at least one reflector beneath each element and configured to redirect radiant heat energy towards the floor, a fresh air heater for delivering fresh heated air into the chamber, an exhaust system for removing heated air and evaporated paint solvents from the chamber, and at least one ceiling fan operable to cause lighter heated air to flow from the ceiling of the chamber and towards the workpiece.
Abstract:
The oven according to the invention comprises a plurality of heated superimposed channels and a plurality of rollers for supporting and advancing the ceramic materials, generally tiles, arranged transversely in each channel and closer to the ceiling than to the floor of the channel. Preferably the distance of the roller axes from the channel floor is not less than twice the pitch of the rollers and their distance from the channel ceiling is not more than such pitch. Preferably the channels are each constituted by a plurality of laterally juxtaposed chambers separated by partitions, the rollers extending through the channels without engaging the partitions. The superimposed adjacent channels are preferably separated by hollow slabs and slabs are located above the highest and below the lowest channels, hot gases being introduced into the cavities within the slabs and flowing out through apertures in the slabs to heat the tiles, or electrical resistances are provided in the slabs. These latter are advantageously constituted of an assembly of modular components.