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Multifunctional vacuum high-pressure gas quenching furnace

A high-pressure gas, multi-functional technology, applied in the field of multi-functional vacuum high-pressure gas quenching furnace, can solve the problems of long transmission distance, slow heating rate, slow heat exchange effect, etc. The effect of preventing loss

Pending Publication Date: 2022-07-29
北京中孚悦达真空科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, there are two main structures of domestic vacuum high-pressure gas quenching furnaces, one is a circular heating chamber structure, and the other is a square heating chamber structure. Both structures have their own shortcomings. For radiation heating, the radiation effect is poor at low temperature (below 450°C), especially for the case of large furnace capacity, the heating rate is slow. The current best solution is to refill inert gas at low temperature and use a stirring fan For convective heating, for irregular shaped products, such as rods, cakes, etc., the uniformity of cooling cannot be guaranteed, and the deformation can only be minimized through tooling and furnace loading methods, and isothermal quenching and graded quenching cannot be completed. The square heating chamber structure The air outlet is enlarged, and the transmission distance is longer, the air volume is large, and the flow velocity is small, resulting in a slower heat transfer effect than the circular heating chamber

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Examples

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Embodiment 1

[0023] see Figure 1-3 , This embodiment provides a multi-functional vacuum high-pressure gas quenching furnace, including a furnace body 1, a circular heat exchange mechanism 2 is arranged on the inner wall of the furnace body 1, and a square heat exchange mechanism 3 is arranged inside the circular heat exchange mechanism 2. There are two groups of heat exchangers in the system, a circular heat exchange mechanism 2 and a square heat exchange mechanism 3, which make full use of the internal space of the furnace body, and maximize the cooling rate through grading heat exchange. One end of the furnace body 1 is provided with a convection mechanism 4. Through convection heating, the heating time of the low temperature section is reduced. The top end of the furnace body 1 is provided with a waste gas treatment mechanism 5, which is convenient for the treatment of the waste gas in the device. The temperature inside the body 1, the bottom of the furnace body 1 is welded and fixedly...

Embodiment 2

[0029] see Figure 1-3 , made further improvements on the basis of Example 1:

[0030] The nozzle 32 is clamped with a baffle 34 at one end outside the octagonal heating chamber 31. The baffle 34 is fixedly connected with a cylinder 35 at one end away from the octagonal heating chamber 31. The outer wall of the octagonal heating chamber 31 is provided with a thermal insulation layer, and the thermal insulation layer is made of graphite. Felt and CFC structure, octagonal heating chamber 31 thermal insulation layer adopts graphite felt and CFC structure, CFC refers to a flat plate made of carbon composite material, compared with traditional graphite felt, it has good compactness, high strength, resistance to Air scouring, long service life, can prolong the service life of the heating chamber under the condition of good thermal insulation effect.

[0031]In this embodiment, in order to form convection and facilitate the heating and heat dissipation of the device, the convection ...

Embodiment 3

[0033] see figure 1 , figure 2 and Figure 4 , made further improvements on the basis of Example 1:

[0034] In order to filter the exhaust gas, an exhaust gas treatment mechanism 5 is used. The exhaust gas treatment mechanism 5 includes an exhaust gas pipe 51. An exhaust gas treatment box 52 is fixedly connected at one end of the exhaust gas pipe 51 away from the furnace body 1, and a front end of the exhaust gas treatment box 52 close to the exhaust gas pipe 51 is clamped. Filter 53, an ionization zone 54 is provided inside the waste gas treatment box 52 near the pre-filter 53, a collection zone 55 is arranged inside the waste gas treatment box 52 near the ionization zone 54, and a collection zone 55 is arranged inside the waste gas treatment box 52. The rear filter 56 and the exhaust gas treatment mechanism 5 adopt high-efficiency ionization and collection technology to fully collect the pollutants in the gas and carry out purification treatment. At the same time, the tr...

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Abstract

The invention discloses a multifunctional vacuum high-pressure gas quenching furnace which comprises a furnace body, a circular heat exchange mechanism is arranged on the inner wall of the furnace body, a square heat exchange mechanism is arranged in the circular heat exchange mechanism, a convection mechanism is arranged at one end in the furnace body, and a waste gas treatment mechanism is arranged at one end of the top of the furnace body. The gas quenching furnace combines the advantages of a circular heating chamber and a square heating chamber, meanwhile, the defects of the circular heating chamber and the square heating chamber are avoided, after equipment is improved, the convection heating effect is achieved through cooperation of the nozzles and the convection mechanism, the multiple nozzles are arranged on the inner wall of the octagonal heating chamber, the wind direction can be adjusted, the cooling speed is increased, and the equipment use cost is reduced; an electric spark detector is arranged in the waste gas treatment mechanism, internal ignition caused by blockage of a filter is prevented, equipment can be shut down in time, loss is prevented, meanwhile, a circular heat exchange mechanism and a square heat exchange mechanism are used, heat exchange of the device is facilitated, the internal space of the furnace body is fully utilized, and the cooling rate is increased.

Description

technical field [0001] The invention relates to the technical field of vacuum furnace equipment, in particular to a multifunctional vacuum high-pressure gas quenching furnace. Background technique [0002] Vacuum furnace is an industry developed in recent decades. The equipment is mainly used in aviation, aerospace, military industry, shipbuilding, automobile and other industries. Products commonly used in processing include aircraft engine parts, auto parts, construction machinery heat exchangers , molds and those that have developed rapidly recently. The difference between it and ordinary electric furnaces is that their working conditions are different. The former works under vacuum conditions (in rare gas), and the latter works under atmospheric pressure (including controlled atmosphere or protective atmosphere). ) work, that is, they are under different pressures at work. [0003] At present, there are two main structures of vacuum high-pressure gas quenching furnaces i...

Claims

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Application Information

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IPC IPC(8): C21D1/62C21D1/773C21D9/00C21D1/34C21D11/00C21D9/28
CPCC21D1/62C21D1/773C21D9/0062C21D1/34C21D11/00C21D9/0075C21D9/28
Inventor 杨帆
Owner 北京中孚悦达真空科技有限公司