A cooling device for a metal plate includes a plurality of first nozzles and a plurality of second nozzles disposed on both sides of the metal plate, respectively, in a thickness direction of the metal plate across a pass line of the metal plate. The plurality of first nozzles form a staggered array in which a pitch in a width direction of the metal plate is Xn, a pitch in a longitudinal direction of the metal plate is Yn, and an offset amount in the width direction of a pair of first nozzles disposed adjacent to each other in the longitudinal direction is ΔXn. The plurality of second nozzles form a staggered array in which a pitch in the width direction is Xn, a pitch in the longitudinal direction is Yn, and an offset amount in the width direction of a pair of second nozzles disposed adjacent to each other in the longitudinal direction is ΔXn. The staggered array of the first nozzles and the staggered array of the second nozzles are disposed offset from each other such that, a center of the second nozzle is at a position offset by a shift amount S from a center of the first nozzle in the width direction, and the center of the second nozzle is positioned in a region defined by an oval having a semi-axis of ΔXn/4 in the width direction and a semi-axis of Yn/3 in the longitudinal direction. The shift amount S is expressed by S=m×ΔXn/2, where m is an odd number such that S is closest to Xn/2.

The disclosure is a heat treatment furnace which heats an element wire for a wire electrode to perform a heat diffusion treatment and includes: first, second and third rotary electrodes to which a voltage is applied; a motor that rotationally drives the rotary electrodes; and a control device. The first, second and third rotary electrodes are arranged in a manner that the element wire is laid in a V-shape or an I-shape in an order of the second rotary electrode, the first rotary electrode and the third rotary electrode from the upstream side in a travel direction of the element wire. The element wire is caused to travel, a voltage is applied to the first, second and third rotary electrodes, and a current flows through and heats the element wire which travels in a first heating section and a second heating section.

The disclosure is a heat treatment furnace which heats an element wire for a wire electrode to perform a heat diffusion treatment and includes: first, second and third rotary electrodes to which a voltage is applied; a motor that rotationally drives the rotary electrodes; and a control device. The first, second and third rotary electrodes are arranged in a manner that the element wire is laid in a V-shape or an I-shape in an order of the second rotary electrode, the first rotary electrode and the third rotary electrode from the upstream side in a travel direction of the element wire. The element wire is caused to travel, a voltage is applied to the first, second and third rotary electrodes, and a current flows through and heats the element wire which travels in a first heating section and a second heating section.

A nozzle system for a band floating system for floatingly guiding a band-shaped material having a nozzle body having a front edge area and a rear edge area opposite to the front edge area, a front gas nozzle arrangement arranged at the front edge area, a rear gas nozzle arrangement arranged at the rear edge area, and a nozzle arrangement arranged, in the conveying direction, in front of the front gas nozzle arrangement and/or behind the rear gas nozzle arrangement such that a liquid fluid is flowable in a fluid jet into a nozzle floating field in the direction towards a band running plane for temperature-controlling the band-shaped material.

A nozzle system for a band floating system for floatingly guiding a band-shaped material having a nozzle body having a front edge area and a rear edge area opposite to the front edge area, a front gas nozzle arrangement arranged at the front edge area, a rear gas nozzle arrangement arranged at the rear edge area, and a nozzle arrangement arranged, in the conveying direction, in front of the front gas nozzle arrangement and/or behind the rear gas nozzle arrangement such that a liquid fluid is flowable in a fluid jet into a nozzle floating field in the direction towards a band running plane for temperature-controlling the band-shaped material.

A vertical furnace for the continuous heat treatment of a metal strip, in particular for an electrical steel strip, as seen in the conveying direction of the metal strip, includes an inlet zone for the metal strip; a heating/holding zone with an annealing chamber for heating and holding the metal strip at a certain temperature; a first cooling zone for cooling the metal strip; and a deflection device, arranged downstream of the first cooling zone with at least one roller arrangement, for deflecting the metal strip in the direction of an outlet zone for the metal strip. At least one second cooling zone is arranged downstream of the deflection device with respect to the conveying direction.

A vertical furnace for the continuous heat treatment of a metal strip, in particular for an electrical steel strip, as seen in the conveying direction of the metal strip, includes an inlet zone for the metal strip; a heating/holding zone with an annealing chamber for heating and holding the metal strip at a certain temperature; a first cooling zone for cooling the metal strip; and a deflection device, arranged downstream of the first cooling zone with at least one roller arrangement, for deflecting the metal strip in the direction of an outlet zone for the metal strip. At least one second cooling zone is arranged downstream of the deflection device with respect to the conveying direction.

Described is a module for the treatment of fibres for obtaining a non-woven fabric. The module comprises a fan unit configured for generating a flow of air through a closed path and a chamber for the treatment of the fibres positioned in fluid communication with the closed path, delimited on opposite sides by respective side panels. Each side panel comprises a first gap defining a blowing portion of the closed path and a second gap defining a suction portion of the closed path. Each side panel defines a branch of the closed path which extends between the fan unit and the treatment chamber. The module also comprises a first platform and a second platform comprising respective first and second channels placed in fluid communication with the first gap and second gap of each side panel and with the treatment chamber to define connecting portions of the closed path. The fan unit is positioned equidistant relative to the treatment chamber in such a way that the flow of air is divided symmetrically between the branches of the closed path.

The invention relates to a method for treating metal strip in a directly fired furnace through which the metal strip is guided. The furnace is fired directly by gas burners and has a non-fired zone through which the exhaust gases from the fired zone flow and thus heat the metal strip. After leaving the non-fired zone, the exhaust gases from the furnace undergo post-combustion in an afterburner chamber. According to the invention, methane is injected into the non-fired zone, which causes nitrogen oxides contained in the waste gas to be converted into hydrogen cyanide.

An oxidation furnace for the oxidative treatment of fibers having a housing which is gas-tight, apart from passage areas for the fibers, and a process chamber located in the interior of the housing. A hot working atmosphere can be generated by an atmosphere-generating device, can be blown into the process chamber and flows through the process chamber in processing conditions in a main direction of flow. Deflecting rollers guide the fibers through the process chamber in a serpentine manner in such a way that the fibers lie next to one another as a fiber carpet (22a), wherein the fiber carpet spans a plane between opposite deflecting rollers. A flow measuring system is provided, by means of which a flow profile of the working atmosphere in processing conditions can be generated, and which comprises at least one sensor system for determining the speed of flow, the sensor system being arranged in a sensor region between two adjacent fiber carpets.