SU1328394A1 - Bell-type furnace - Google Patents

Abstract

The invention relates to devices for the heat treatment of metal and can be used in the metallurgical and other industries. The purpose of the invention is to reduce thermal resistance and shorten the duration of cooling. The Kolpak furnace contains a stand 1 on which a muffle 2 with a SO

Description

 a central dead-end pipe 3, made in the form of a truncated cone, tapering towards the stand, a cooling pipe 4, made in the form of a truncated cone and installed in a dead-end pipe, pipe 5, placed in the cooling pipe and connected to the cooling system. The pipe 5 ends with a nozzle 6. The upper part of the pipe 4 is open, equipped with flanges 7 with supporting ribs 8. In the pipe 4 there are radial channels 9 for bypassing the cooler from pipe 4 to the outer surface of the muffle. Support flanges have .1

The invention relates to a device for heat treatment of metal and can be used in the metallurgical and other industries.

The aim of the invention is to reduce thermal resistance and shorten the cooling time.

The drawing shows a bell furnace, a general view.

. The Kolpak furnace consists of a stand 1, on which a muffle 2 with a central dead-end pipe 3 is installed, a truncated cone shaped tapering towards stand 1, a cooling pipe 4 made in the form of a truncated cone tapering towards stand 1 mounted in the dead end of the muffle and. loosely supported on the cap muffle-L 2, pipe 5, placed in the cooling pipe 4 and connected to the cooler supply system. The pipe 5 ends with a nozzle 6 at the bottom of the cooling pipe 4. The upper part of the cooling pipe 4 is open, provided with support flanges 7 having support ribs 8 forming between the inner surface of the flanges 7 and the outer surface of the muffle cover 2 radial channels 9 for overflow the cooler from the cooling tube 4 to the outer lateral surface of the muffle 2. Support flanges

Adjusting screws 10 provide displacement of the pipe 4 relative to the dead-end pipe 3. Performing this - the peak pipe of the muffle and the cooling pipe in the form of truncated cones tangentially tapering towards the bench with the possibility of vertical movement of the cooling pipe reduces thermal resistance heat transfer from the heated metal coils to the cooler, which leads to a reduction in the cooling time of the metal and consequently to an increase in the productivity of the furnace. 1 il.

fitted with adjustment screws with screws 10, the free running of which ensures the displacement of the additional pipe relative to the dead end pipe of the muffle along the axis of symmetry.

Kolpakova oven works as follows.

After the completion of the heating and metal discharge processes, the heating cap is removed and transferred to another stand. In the inner cavity, the dead-end pipe 3 of the muffle 2, lower the cooling tube 4 until it stops with the flanges 7 on the muffle-2 cover. Using the adjusting screws 10, set the size of the gap 4 between the dead-end pipe 3 of the muffle 2 and the cooling tube 4.

The gap can be varied from 0 in the case of tight contact between the cooling tube 4 and the muffle pipe 2 to 30 mm, which ensures unconditional separation of the pipes 2 and 4 after the end of the metal cooling process.

A cavity of the cooling tube 4 is introduced through the pipeline 5 connected to the water supply system; The nozzle 6 of the pipeline 5 is placed at the bottom of the cooling pipe 4. Water flows through the pipe 5 through the nozzle 6 into the cooling pipe 4, takes heat from its walls, moves through the upper open edge and directs the cooling channels 9. the outer side surface of the muffle 2.

If the dead end pipe of the muffle and the cooling pipe is seized when (ASSISTANCE of the adjusting screws 10 by displacing the additional pipe relative to the dead end pipe of the muffle, the pipes are inserted along the axis of symmetry)

cottages from heated metal rolls, which increases the productivity of the furnace furnace.

Claims (1)

Invention Formula The bell furnace containing the stand, the heating bell, the muffle from the center of the wedging state (the Q is disconnected by the drop and dead end pipe, cooled by them). a pipe, a pipeline for the supply cooler so that with Making the muffle pipe stub and an additional pipe in the form of truncated cones tapering towards the stand with the possibility of displacing the additional pipe relative to the muffle pipe stub along the symmetry axis reduces the gap between the cooling pipe and the muffle pipe stub, therefore, reduces thermal resistance i.e. . increases heat transfer coefficient15 20 characterized by the purpose of reducing thermal resistance and shortening the cooling time by adjusting the gap between the central and cooling pipes, the dead ends and the cooling pipes are made in the form of truncated cones, which taper towards the stand, while the cooling pipe is vertically displaceable. Compiler G.Nazarova editor S.Patrusheva Tehred M.Morgental Proofreader V. But ha Order 3455/30 Circulation 549 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Design, 4 dacha from heated coils of metal, which improves the productivity of the collective oven. Invention Formula cooler so that with five 0 characterized by the purpose of reducing thermal resistance and shortening the cooling time by adjusting the gap between the central and cooling pipes, the dead ends and the cooling pipes are made in the form of truncated cones, which taper towards the stand, while the cooling pipe is vertically displaceable.