Nitrogen oxidation furnace

Abstract

The invention relates to the field of nitrogen oxidation equipment, and discloses a nitrogen oxidation furnace. The nitrogen oxidation furnace comprises a furnace body, wherein the furnace body comprises an outer shell, an inner shell and an air guide barrel, a furnace door is arranged on the outer shell, the inner shell is arranged in the outer shell, the air guide barrel is arranged in the inner shell, a material frame support is arranged in the inner shell and extends into the air guide barrel, a heating pipe is arranged in the outer shell, and the heating pipe is arranged in the inner shell. A steam evaporation pipe is arranged in the inner shell, a draught fan is arranged on the outer side of the air guide barrel, and steam enters the air guide barrel through the draught fan. The furnace has the beneficial effects that one furnace can be used for multiple purposes; an additional heating device does not need to be configured; forced cooling of the die workpiece subjected to nitriding oxidation treatment in the furnace body is achieved, meanwhile, the cooling speed of the die workpiece is increased, and the requirement standard of the die workpiece can be met; the nitrogen oxidation furnace is space-saving and convenient to operate, and workpiece in-out furnace efficiency can be effectively improved.

Description

technical field [0001] The invention relates to the field of nitrogen oxidation equipment, in particular to a nitrogen oxidation furnace. Background technique [0002] During the long-term use of the mold, surface failure often occurs, and the causes of surface failure are such as wear, corrosion or thermal melting loss. In order to avoid surface failure as much as possible, at present, people usually use the method of nitriding the mold surface in advance during mold production. The mold surface after nitriding treatment can effectively avoid the occurrence of mold surface failure. Because after the nitriding treatment is carried out on the surface of the mold, a nitriding layer will be formed on the surface of the mold, and the nitriding layer improves the hardness of the surface of the mold, and also enhances the corrosion resistance and wear resistance of the mold. [0003] At present, nitriding furnaces are usually used as equipment for nitriding molds, but most of the...

AI Technical Summary

Problems solved by technology

Therefore, at present, many nitriding furnaces also have the function of oxidation, forming a nitrogen oxidation furnace. Superheated steam is usually used as the gas source for oxidation, but an additional heating device is required in the process of generating water vapor from superheated steam, resulting in a high risk factor. , large energy consumption

And the heating process is usually indirect heating, which leads to the slow cooling rate of the mold workpiece in the nitrogen oxidation furnace during the nitriding process, which affects the nitriding effect

[0005] In order to avoid the above deficiencies, some nitrogen oxidation furnaces use fans to blow ammonia gas to cool down the mold workpieces, but the method of blowing ammonia gas with fans consumes a lot of gas and takes a long time. Some nitrogen oxidation furnaces use nitrogen A separate cooling fan is added outside the furnace body of the oxidation furnace, but after the mold workpiece is cooled to a certain temperature, it is difficult to continue cooling the mold workpiece through the cooling fan, which cannot meet the demand standard of the mold workpiece

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