Nitrogenation furnace rear chamber capable of being subjected to vacuumizing and sealing and cooling method thereof
A nitriding furnace and vacuum pumping technology, which is applied in the direction of furnace, furnace type, heat treatment furnace, etc., can solve the problems of incomplete flushing of the nitriding furnace oxidation atmosphere, affecting the quality of the workpiece, and the consumption of nitrogen, so as to achieve simple structure and reduce Energy consumption and cost reduction effects
Pending Publication Date: 2018-10-19
YANCHENG FENGDONG SPECIAL FURNACE IND
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Problems solved by technology
[0002] In order to make the parts after nitriding have a good gray-white appearance and prevent the deformation of the workpiece, it needs to be cooled in a protective atmosphere from the nitriding chamber to the back chamber of the nitriding furnace. The traditional method is to use a large flow of nitrogen to flush through To replace the atmosphere in the room after diluting the nitriding furnace, under normal circumstances, the rear room of the nitriding furnace with a volume of 1 cubic meter needs 5 cubic meters per hour of nitrogen ventilation, thus consuming a lot of nitrogen, and the replacement method is not very thorough. The oxidizing atmosphere in the chamber after flushing the nitriding furnace
The color of the processed workpiece cannot reach the ideal off-white color, and there will be banded oxidation color on the workpiece, which will affect the quality of the workpiece
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[0020] In order to further illustrate the technical means adopted by the present invention and the technical effects achieved, the following will be described in detail in conjunction with the accompanying drawings and embodiments.
[0021] refer to figure 1 , the present invention provides a vacuumable nitriding furnace rear chamber, which includes a furnace body 10, a nitrogen repressurization pipeline 20, a sealed furnace door 30, a vacuum suction pipeline 40, a vacuum pump 50, a skeleton seal 60, and a vacuum valve row Air port 70, rotating shaft 80. The furnace body 10 runs through from front to back, and sealed furnace doors 30 are provided at the front and rear openings of the furnace body 10 , which can completely seal the furnace body 10 . A nitrogen repressurization pipeline 20 is connected to the furnace body 10 , and the nitrogen repressurization pipeline 20 is connected to the inside of the furnace body 10 . A rotating shaft 80 runs through the side wall of the ...
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The invention provides a nitrogenation furnace rear chamber capable of being subjected to vacuumizing and a sealing and cooling method of the nitrogenation furnace rear chamber. The nitrogenation furnace rear chamber comprises a furnace body, a nitrogen gag re-pressing pipe, sealing furnace doors, a vacuum suction pipe and a vacuum pump. After the furnace body is sealed by the sealing furnace doors, the vacuum pump sucks out air in the furnace body, then the nitrogen gas pipe injects nitrogen gas into the furnace body, and then a workpiece is sent into the furnace body to be cooled. The nitrogenation furnace rear chamber has the advantages of being simple in structure, ingenious in design, convenient to operate, capable of reducing energy consumption and lowering the cost and the like.
Description
technical field [0001] The invention belongs to the field of heating furnaces, in particular to a vacuumable nitriding furnace rear chamber used in a heat treatment production line and a sealing and cooling method thereof. Background technique [0002] In order to make the parts after nitriding have a good gray-white appearance and prevent the deformation of the workpiece, it needs to be cooled in a protective atmosphere from the nitriding chamber to the back chamber of the nitriding furnace. The traditional method is to use a large flow of nitrogen to flush through To replace the atmosphere in the room after diluting the nitriding furnace, under normal circumstances, the rear room of the nitriding furnace with a volume of 1 cubic meter needs 5 cubic meters per hour of nitrogen ventilation, thus consuming a lot of nitrogen, and the replacement method is not very thorough. The oxidizing atmosphere in the chamber after flushing the nitriding furnace. The color of the processe...
Claims
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IPC IPC(8): C23C8/24C23C8/80C21D9/00C21D1/74
CPCC21D1/74C21D9/00C23C8/24C23C8/80
Inventor 王群华赵建玲李湧沈杰韩志春
Owner YANCHENG FENGDONG SPECIAL FURNACE IND