Tubular furnace isothermal hot gas quenching device
A technology of quenching device and tube furnace, which is applied in the direction of quenching device, quenching agent, heat treatment equipment, etc., and can solve the problems of potential safety hazards, high cooling rate of furnace tubes, and high modification costs
Active Publication Date: 2021-05-18
UNIV OF SCI & TECH BEIJING
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Problems solved by technology
However, if the gas quenching method is used for cooling, the gas jet formed along the gas nozzle may cause the local cooling rate of the furnace tube to be too high, posing a safety hazard
At the same time, most of the current laboratory tube furnaces are not designed with a gas quenching inlet channel, and the cost of modification is too high
Method used
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[0022] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only for explaining the present invention, and are not intended to limit the scope of the present invention. The present invention will be further described in detail below in conjunction with the accompanying drawings and a specific embodiment.
[0023] as attached figure 1 As shown, the present invention is an isothermal hot gas quenching device for a tubular furnace, including a stainless steel flange 1, a bottom support 2, a cooling chamber 3, and a cooling air passage 4;
[0024] The stainless steel flange 1 is provided with an air inlet channel 5 and an air outlet channel 6; the bottom support 2 is installed on the stainless steel flange 1, and the cooling chamber 3 is fixed on the surface of the bottom support 2 through a bracket 6.
[0025] The size of the stainless steel flange 1 is compatible with the furnace tube ...
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The invention relates to a tubular furnace isothermal hot gas quenching device, and relates to the technical field of metal heat treatment. The tubular furnace isothermal hot gas quenching device is composed of a stainless steel flange plate, a bottom support, a cooling chamber and a cooling air channel, the stainless steel flange plate is provided with an air inlet channel and an air outlet channel, the bottom support is installed on the stainless steel flange plate, and the cooling chamber is fixed to the surface of the bottom support through a support. The interior of the cooling chamber is divided into a quenching area and a heat exchange area, and cooling gas rapidly cools a sample in the quenching area through a cooling gas channel, fully exchanges heat in the heat exchange area and then is discharged into the furnace body in a turbulent flow form. The gas quenching method adopted by the invention has no surface oxidation risk in the whole process, and the requirements of different heat treatment experiment processes can be met by adjusting the gas flow and the gas temperature. The tubular furnace isothermal hot gas quenching device is low in experiment cost, higher in safety and convenient to refit and maintain, can be applied to tube furnaces of different models / tube diameters, does not need to be additionally reformed, and greatly improves the experiment efficiency and operability.
Description
Technical field: [0001] The invention relates to the technical field of metal heat treatment, in particular to an isothermal hot gas quenching device for a tube furnace. Background technique: [0002] Austenitic austempering is a method of cooling austenitized steel to the martensitic transformation temperature (M S ) The step-by-step quenching process in which the above-mentioned sufficient heat preservation is completed and the austenite isothermal transformation is further slowly cooled to room temperature. Under normal circumstances, this quenching process needs to be carried out in a salt bath, which not only needs to keep the molten salt warm before quenching, but also causes additional equipment burden and causes great environmental pollution. Cooling and quenching by replacing the salt bath with high-temperature inert gas has the technical characteristics of cleanliness and high efficiency, and undoubtedly becomes a more ideal rapid quenching process. [0003] Chin...
Claims
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Login to View More IPC IPC(8): C21D1/62C21D1/613
CPCC21D1/62C21D1/613
Inventor 李根唐海燕刘华松张家泉何涛
Owner UNIV OF SCI & TECH BEIJING