SU1004733A2

SU1004733A2 - Continuous furnace for heating metal

Info

Publication number: SU1004733A2
Application number: SU792835946A
Authority: SU
Inventors: Анатолий Львович Кесельман; Гершон Давидович Дымов
Original assignee: Предприятие П/Я В-2996
Priority date: 1979-11-11
Filing date: 1979-11-11
Publication date: 1983-03-15

Description

(54) ПРОХОДНАЯ ПЕЧЬ ДЛЯ НАГРЕВА МЕТАЛЛА(54) PASSAGE FURNACE FOR HEATING METAL

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Изобретение относ тс к печам дл нагрева и термообработки металлов, например, из алюкошиевых сплавов может быть исплоьзовано в металлургической и машиностроительной промыш-г: ленности.The invention relates to furnaces for heating and heat treating metals, for example, from aluminum-spherical alloys, can be used in the metallurgical and machine-building industry.

По основному авт. св. № 851О6О известна проходна печь дл нагрева металла, содержаща теплоизолированную рабочую камеру, устройство принудительной Ш1ркул5шин газовой среды, подвижный под с шагающими и стационарными балками, верхние и нижние нагревательные бпохв н верхние и а ж ниё газоструйные короба, соединенные полыми перемычками, установленными на боковых стенах печи между устройствами принудительной циркул ции газовой среды, наприм вентил торами. Греющие газы из нагревательного блока распредел ютс на верхний и нижний газоструйные короба, из которых ч& рез сопла обдувают перпешшкул5фноAccording to the main author. St. № 851О6О known passage furnace for heating a metal, containing a heat-insulated working chamber, a device for the forced gas environment, movable under with walking and stationary beams, upper and lower heating bpoho upper and a gas jet boxes connected by hollow bridges installed on the side walls furnaces between devices for the forced circulation of the gaseous medium, for example, fans. The heating gases from the heating unit are distributed to the upper and lower gas-jet ducts, of which h & rez nozzle blow perpeshshkul5fno

верхнюю и нижнюю поверхности заготовок l .top and bottom surface of the workpiece l.

Недостатком известной конструкции t вл етс то, что торцовые поверхности сл бов не обдуваютс стру ми, а нагрев их идет за счет продольного омыва и греющими ra3at5ra. При этом с торцовых поверхностей теплообмен идет значительно менее интенсивно, так как не используютс преимущества струй10 ного нагрева.A disadvantage of the known construction t is that the end surfaces of the slabs are not jetted, and they are heated by longitudinal washing and heating ra3at5ra. In this case, heat exchange from the end surfaces proceeds much less intensively, since the advantages of jet heating are not used.

Цель изобретени - повыщение интенсивности нагрева металла и, следовательно , повышение производитет ности The purpose of the invention is to increase the intensity of heating of the metal and, consequently, increase the productivity

ts печи и снижение энергозатрат.ts furnaces and lower energy costs.

Поставленна цель достигаетс тем, что в полых перемычках выполнены сопла дл струйной обдувки поверхности металла.This goal is achieved by the fact that in the hollow bridges there are nozzles for jet blasting of the metal surface.

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Claims

Thus, jet heating of not only the lower and upper surfaces (large side faces) of the slabs, but of the end faces (or of the small side walls, depending on the position of the slabs in the furnace), is provided. FIG. 1 shows a furnace; cross section} in FIG. 2 - the same. Yid in the plan. The furnace consists of a heat-insulated working chamber 1, heating booths of the upper 2 and lower 3, equipped with burners 4, circulation fans 5, upper gas-jet boxes 6 and lower gas-jet boxes 7, which are stationary beams, hollow plugs 8, placed on the side walls of the furnace between the fans and the co-amps opposite to the entrance of the gas ducts with the lower gas-jet duct with the upper heating duct, and the side of the upper gas-jet opposite to the input of the greas gas ducts boxes - the lower heating duct. Gas-jet boxes, upper and lower, to hollow ne / regChchk are equipped with a frame 9 for feeding a gas gas to the surface of the preform. (slab). Shagw Beam 10 beams are placed between the Shut-off jet blasting boxes, in which the walking beams 1O move on racks 11, are made through holes 12, which overlap the bottom gates 13. The metal 14 is placed in the furnace with beams and intensively, uniformly loading (top, bottom) and from the sides (on the right to the right) perpendicular to the jets with circulating gaseous medium. The furnace works as follows: The circulation fan 5 sucks the gaseous medium from the working chamber 1 and delivers it to the heating blocks 2 and 3, where it is heated My temperature and pressure are forced into the gas-jet units directly and through hollow bridges 8, on both sides of the furnace width. Then, through the nozzles 9, the hot gases blow the metal at high speed, heating it evenly to the desired temperature. shown in the drawing by arrows: visible streams - solid lines, invisible - dotted lines. Thus, the hollow jumpers connecting the heating blocks with gas-jet boxes (upper with lower, and lower with upper) are simultaneously forging gas-jet boxes, providing jet heating of the end surfaces of the blanks (metal). This design of the furnace allows to intensify the process of heating the mile by increasing the surface of the jet heating and, consequently, increasing the productivity of the furnace, reducing the heating time of the metal. The final uniform heating of the metal will also increase due to an increase in the surface of the same heating intensity. The invention is a through-furnace for heating a metal according to ed. St. No. 851060, about t and h and khsch and the fact that, in order to intensify the heat exchange in the furnace, in the hollow bridges there are holes for the continuous blowing of the metal surface., Sources of information taken into account during the examination 1. USSR Certificate of Authors Kg 851060 cl. F 27 B 9 / GS, 1979.