A non-standard bell furnace for heat treatment

Abstract

The invention discloses a nonstandard bell furnace for heat treatment processing. The nonstandard bell furnace for heat treatment processing comprises a base surface and an inner furnace, wherein a mounting groove is formed in the upper surface of the base surface; a furnace cover is arranged on the outer surface of the inner furnace in a sleeving manner, a furnace cover base is fixedly arranged in the bottom of the furnace cover, and the upper surface of the furnace cover base is fixedly connected to the bottom of the inner furnace; by arranging a supporting bottom plate and an upper reinforcing ring, pushing the supporting bottom plate to change in position on the base surface, the upper reinforcing ring is arranged at the upper end of the furnace cover while the inner furnace is locatedin the furnace cover, so that the position of the inner furnace can be changed; when some large maintenance is carried out, the supporting bottom plate can be pushed, so that the inner furnace changes in position to achieve a cleaning purpose; the lower surface of annular seal plate communicates to a threaded cooling pipe, so that when cooling water is sprayed out from a nozzle, the cooling watercan be further cooled through a fan, and finally, the cooling water can circulate on the surface of the inner furnace along the threaded cooling pipe, so that the heat-dissipating effect is further enhanced.

Description

technical field [0001] The invention relates to the technical field of bell furnaces, in particular to a non-standard bell furnace for heat treatment. Background technique [0002] A general bell-type furnace is composed of a heating mantle, a cooling mantle, a hearth, an inner mantle and corresponding cooling, evacuation, and circulation fan systems. There is a spray cooling process in the annealing process of the bell-type furnace, and the cooling water is sprayed from the top spray device on the cooling mantle. Spray to the top of the inner cover and flow down along the outer wall of the inner cover to achieve the purpose of cooling the inner cover. The top of the original inner cover is provided with lifting rings, which are connected with the inner cover through multiple rib plates, but the connection welds are stressed for a long time Afterwards, cracks will be generated, which will cause hydrogen leakage in the inner cover, and there will be serious safety hazards. In...

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Problems solved by technology

[0002] A general bell furnace is composed of a heating mantle, a cooling mantle, a hearth, an inner mantle and corresponding cooling, evacuation, and circulation fan systems. There is a spray cooling process in the bell furnace annealing process, and the cooling water is sprayed from the top spray device on the cooling mantle. Spray to the top of the inner cover and flow down along the outer wall of the inner cover to achieve the purpose of cooling the inner cover. The original top of the inner cover is provided with a lifting ring, which is connected with the inner cover through multiple rib plates, but the connection weld is under stress for a long time Afterwards, cracks will be generated, resulting in hydrogen leakage in the inner cover, which poses a serious safety hazard. In addition, because the bottom of the furnace itself is fixed on the base surface, it cannot be moved, resulting in a very large amount of work required for some large-scale maintenance. It is very troublesome, so we propose a non-standard bell furnace for heat treatment to solve the above problems

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