SU1074910A1 - Unit for heat treatment of products - Google Patents

Abstract

UNIT FOR HEAT TREATMENT OF PRODUCTS, containing loading area, heating furnaces, cooling chamber, under which are made with rails installed in them, loading and unloading machine with a lifting platform and a retractable trolley, different in that with the aim of improving the reliability of the unit in operation and reduce heat losses, the trolley is equipped with heat insulating plates installed with the possibility of removal, the width of the heat insulating plates more than the width of the channels under each furnace and less than the width of the channels d a cooling chamber and the loading portion. 2. The unit pop. 1, with the fact that in the heating furnace in the hearth there are centered slots for heat insulating plates with side walls extending upwards. (L

Description

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CO The invention relates to a KeiM installation for heat treatment of products, for example, homogenization of ingots from aluminum alloys and subsequent cooling in circulating cooling chambers. A heat treatment unit of the ingots is known, containing heating furnaces with an extra hearth and a section for final cooling of the ingots, and the furnaces and Servicing a transponder cart with chain pusher. Under the cave of the furnace, it is made in the form of a retractable trolley lined with thermal insulation, under which the travel part of the trolley is protected from the high temperature. And to seal the working space in the furnace, the side slots between the trolley and the walls are sealed with a sand block, which, however, does not guarantee sufficient tightness of the space and sand can get into the working space of the furnace 13. A disadvantage of the known unit is a high heat consumption heating the heat insulation of the hearth after cooling together with the load and slow cooling of the load due to heat accumulated by the heat insulation. 11 and, closer to the technical essence and the achieved effect, the unit is an aggregate containing a heating furnace serviced by a loading and unloading machine with a lifting platform, a cooling chamber, a mounting platform under which channels with rails are made for the entrance of the pull-out trolley of the machine. Mills (ingots) in it are mounted on fixed supports inside the kiln with a loading and unloading machine by means of a lifting platform and a retractable trolley, which for the heating period are located outside the kiln's working space 2. A disadvantage of the known assembly is that in the working space of the furnace between the non-removable supports for the products there are rails for the wheels of the sliding cart. The rails wear intensively from the effects of high temperature and heat distortion occurs (ki. The invention is to increase the reliability of the unit and reduce heat loss. The goal is achieved in those for the unit for heat treatment of products containing the charging section. Heating furnaces, cooling chamber, - under which the channels are made with rails installed in them, a loading and unloading machine with a lifting platform and a mobile trolley, the trolley is equipped with heat insulating plates, mounted with the possibility of removal, while the width of the heat insulating plates is greater than the width of the channels under each furnace and less than the width of the channels under the cooling chamber and the charging section.In the heating furnace in the hearth there are centering grooves for the heat insulating plates with the side walls extending upwards. 1 shows the unit, plan; Fig. 2 shows section A-L in Fig. 1. The unit for heat treatment of products contains heating furnaces 1 for homogenizing ingots 2, cooling chamber 3, loading section 4 and serving them a loading and unloading machine 5 comprising a transferor cart 6 moving along the rails 7 along the furnace fronts, a lifting platform 8 and a retractable cart 9 having the ability to move along the rails 10 installed on the transferor cart 6 and the rails 11 installed in the furnaces, cooling chamber and boot area. The rails 11 are located in the channels 12 intended for the entrance of the trolley 9. In each furnace 1 there are heat-insulating plates 13 laid on each channel 12 in the slot of the centering groove 14 for the plates 13. The plates have a width greater than 5 of the channel 12 inside the oven, but less than the width of the channels in the chamber o: from the start and the loading area. Such a ratio of the width of the plates and channels is necessary to ensure the return of the heat insulating plates 13 back to the furnace 1 after transferring the furnace from the furnace to the cooling chamber or to the loading area 4 Between the lower side of the plate 13 inside the furnace 1 and the lifting platform 8 at its lower position is provided a gap, the size of which is sufficient for the sliding trolley 9 to freely enter the channels 12. Between the product 2 on the installed platform 4 and the plates 13 on the platform 8 in its lower position, there is also a gap. The products 2 inside the furnace 1 and at other technological positions are mounted on fixed supports 15, and inside the furnace they are mounted on plates 13. The plate 13 is sheathed on top with a sheet of heat-resistant steel, and its supporting frame and bottom is made of simple carbon steel. Cana 12 inside is made of concrete, and the rails 11 railway.

The unit works in the following way.

The product 2 (ingot) is installed by a bridge crane on the fixed supports 15 of the loading section 4, Self-loading and unloading machine 5, moving along the rails, 7 stops at the front of one of the heating furnaces 1. Lifting, the platforms 8 of the plate 13 are shifted from the centering slot the groove 14 on it and slide onto the transborder carriage b, which under its own power moves to the charging station 4. The plates 13 on the release trolley roll in channels 12 to the charging section 4 and lift the platform 8 to transfer the product 2 with fixed x reliance on yourself. The plates 13 with the product 2 on the slide trolley 9. are output from the loading station 4 to the transferor truck b, with which the plates with the product 2 are transported to the furnace 1, where they are placed with the product 2 into the slot of the centering groove 14. the reverse movement is removed from the furnace, leaving item 2 in it, where it is subjected to heat treatment. After homogenization by moving the extendable carriage 9 into the furnace, and the platforms 8 upward the plate 13 with the product 2 are shifted from the fixed supports 15 to the lifting platform 8 and the movement of the sliding carriage 9 are fed back to the transborder carriage b to feed the heated product 2 into the cooling chamber, from where the plates during the return stroke of the extendable trolley 9 are removed from the channels 12 to return to the furnace and put them on the channels 12.

Using such a construction of the unit allows you to protect

retractable trolley with a lifting platform from thermal deformations, increase its durability and the durability of the rails, since during the heating period of the furnace the rails are protected from above

heat insulating plates from high temperature effect and the time between overhaul and repair repairs increases.

Reduced heat loss occurs

due to the fact that the channels in the furnace are blocked by heat insulating plates, and when treating the bilge in the cooling chamber, the plates retain the accumulated heat.

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Claims (2)

UNIT FOR THERMAL PROCESSING OF PRODUCTS, containing a loading section, heating furnaces, a cooling chamber, under which channels with rails installed in them, a loading and unloading machine with a lifting platform and a sliding trolley, are distinguished by the fact that, in order to increase the reliability of the unit in operation and to reduce heat loss, the trolley is equipped with heat-insulating plates installed with the possibility of removal, while the width of the heat-insulating plates is greater than the width of the channels under each furnace and less than the width of the channels under the cameras oh cooling and loading area. 2. Unit pop. 1, casting with the fact that in the heating furnace in the hearth, centering grooves are made for heat-insulating plates with side walls expanding upward.