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Cover type annealing furnace

A bell-type annealing furnace and annealing technology, applied in furnaces, heat treatment furnaces, furnace types, etc., can solve the problems of uneven temperature in annealing furnaces, poor annealing effects, and low product quality, and achieve enhanced annealing effects, saving manpower, The effect of improving product quality

Pending Publication Date: 2018-07-17
YANCHENG SHENGAO HEAT TREATMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The bell-type annealing furnace in the prior art realizes heating or cooling by exchanging the heating mantle and the cooling mantle, which is cumbersome to operate and has potential safety hazards, and the temperature in the annealing furnace is not uniform, resulting in poor annealing effect and low product quality

Method used

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  • Cover type annealing furnace
  • Cover type annealing furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] see figure 1 , a bell annealing furnace, comprising a furnace base 1, a heating and cooling cover 2, a protective cover 3, an annealing frame 4, a temperature sensor 5, a PLC programming controller 6;

[0026] The heating and cooling cover 2 and the protective cover 3 are installed on the furnace base 1; in order to further increase the air tightness in the furnace, a sealing ring can be provided at the connection between the heating and cooling cover 2, the protective cover 3 and the furnace base 1;

[0027] The heating and cooling cover 2 includes an inner interlayer, in which a heating element 21 and a cooling pipe 22 are arranged; while realizing the dual functions of heating and cooling, in order to further avoid mutual interference and make the heat distribution more uniform, the heating element 21 is arranged at the lower part of the inner interlayer, and the cooling pipe 22 is arranged at the upper part of the inner interlayer.

[0028] The protective cover 3 i...

Embodiment 2

[0032] see figure 1 with figure 2 , the upper air guide port 31 and / or the lower air guide port 34 is provided with an inner extension pipe 37 , and the inner extension track extends to the inside of the protective cover 3 . Therefore, the heat exchange between the inside and outside of the protective cover 3 is faster and more uniform.

[0033] The inner extension pipe 37 can be circular, straight or quadrilateral.

[0034] Further, the inner extension pipe 37 is provided with several dispersion holes 38 . Adding dispersing holes 38 makes the heat evenly dispersed by the air flow, thereby further ensuring the uniformity of the temperature in the furnace.

[0035] The rest of the structures and advantages are exactly the same as in Embodiment 1.

Embodiment 3

[0037] see figure 1 , the bell annealing furnace is provided with a gas exchange port 7 with a valve. It is used to input and output gas according to the needs of annealing. The gas exchange port 7 is arranged at the bottom of the bell annealing furnace.

[0038] The rest of the structures and advantages are exactly the same as in Embodiment 1.

[0039] The present invention can also combine at least one of the technical features described in Embodiments 2 and 3 with Embodiment 1 to form a new implementation.

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Abstract

The invention relates to the technical field of heat treatment equipment, and in particular relates to a cover type annealing furnace comprising a furnace base, a heating and cooling cover, a protective cover, an annealing frame, a temperature sensor and a PLC programming controller; the heating and cooling cover comprises an inner interlayer, a heating element and a cooling duct are disposed in the inner layer; an upper air guiding port is disposed on the upper portion of the protective cover, a first air pump and a first valve are disposed on a pipeline connected to the upper air guiding port, a lower air guiding port is disposed at the lower portion of the protective cover, a second air pump and a second valve are disposed on a pipeline connected to the lower air guiding port; the annealing frame and the temperature sensor are disposed inside the protective cover, the temperature sensor, the heating element, the cooling pipe, the first air pump, the first valve, the second air pumpand the second valve are respectively connected to the PLC programming controller; the cover type annealing furnace does not need to replace an outer cover, and the temperature in the furnace is stable and uniform.

Description

technical field [0001] The invention relates to the technical field of heat treatment equipment, in particular to a bell annealing furnace. Background technique [0002] Annealing is a metal heat treatment process, which refers to slowly heating the metal to a certain temperature, keeping it for a sufficient time, and then cooling it at an appropriate speed. The purpose is to reduce hardness and improve machinability; eliminate residual stress, stabilize size, reduce deformation and crack tendency; refine grain, adjust structure, and eliminate structure defects; in production, annealing process is widely used. [0003] The bell-type annealing furnace in the prior art realizes heating or cooling by exchanging the heating mantle and the cooling mantle, which is cumbersome to operate and has potential safety hazards, and the temperature in the annealing furnace is not uniform, resulting in poor annealing effect and low product quality. Contents of the invention [0004] The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/00C21D1/26C21D11/00
CPCC21D1/26C21D9/00C21D11/00
Inventor 倪文忠孙正友
Owner YANCHENG SHENGAO HEAT TREATMENT CO LTD
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