Aluminum brazing furnace

Abstract

The invention discloses an aluminum brazing furnace which has the advantages of safe use and good cooling effect at a pre-cooling region. When the temperature in an air cooling chamber is higher than a set temperature, a control device can control a circulating fan to be automatically started; the air speed at a forced cooling region is uniform, the cooling effect of a furnace lining at the forced cooling region is good and the cooling area is relatively large; a slag removal chamber is reserved, so that brazing crystals can be immediately cleaned up without manual periodic cleaning, the labor intensity is reduced, the using cost is reduced, the working efficiency is improved, and the influence on the brazing effect is prevented because the shaking of a conveyer belt caused by the accumulation generated by the brazing crystals can be prevented; meanwhile, the slag removal device is also provided with an access door, so that the aluminum brazing furnace can be conveniently examined and repaired; when the furnace lining is subjected to linear expansion, the furnace lining can be helped to quickly move towards one side so as to perform the liner expansion well, reduce the resistance during the expansion and ensure high safety and high reliability for the running of the aluminum brazing furnace; and thus the distance for every linear expansion of the furnace lining is the same, and deformation of the furnace lining caused by the difference in distance of the linear expansion of the furnace lining is prevented.

Description

technical field [0001] The invention relates to an aluminum brazing furnace, in particular to an aluminum brazing furnace. Background technique [0002] The aluminum brazing furnace is a kind of equipment for effectively connecting the various parts of the aluminum heat exchanger. It is welded by utilizing the characteristic that the alloy melting point of aluminum solder is lower than the melting point of aluminum metal material. The brazing filler metal is usually placed near or inside the welding surface of the part to be connected, and NOCOLOK aluminum brazing flux is coated between the parts and the welding surface and on the surface. After installation and drying, the parts are heated under the protection of a certain inert gas until the brazing alloy melts The temperature at which the metal of the part does not melt. The inert gas used is generally nitrogen. At the same time, NOCOLOK aluminum brazing flux breaks the oxide film of aluminum, allowing the surface diff...

AI Technical Summary

Problems solved by technology

When in use, the wind speed is uneven, the cooling effect of the furnace is not good, and the cooling area is relatively small

[0005] When brazing the workpiece, brazing crystals will appear in the brazing area, and the brazing crystals will fall into the mesh of the mesh conveyor belt, because the mesh conveyor belt is almost close to the bottom of the furnace Running at the bottom of the furnace, the brazing crystals will not automatically fall from the mesh of the mesh conveyor belt, and cannot be cleaned in time. After long-term use, the brazing crystals will accumulate, making the conveyor belt vibrate and affecting the brazing effect

The operator can only enter the gas-shielded brazing furnace to clean the brazing crystals regularly under the shutdown state. The work efficiency is low, the operation is very troublesome, the labor intensity is high, and the use cost is high.

[0006] When in use, the furnace in the brazing area and the furnace in the pre-cooling area will expand due to heat. Since the other end of the furnace in the brazing area is fixed on the support in the brazing area, the other end of the furnace in the pre-cooling area is movably set in the pre-cooling area. Therefore, when the furnace in the brazing area and the pre-cooling area are heated and expanded, they will move to the side of the pre-cooling area as a whole. During the expansion process, the bottom of the furnace needs to overcome a certain frictional resistance, which may easily cause deformation of the furnace , because the distance of each linear expansion of the furnace is different, it will also cause the deformation of the furnace

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