Continuous annealing furnace

A continuous annealing furnace and furnace body technology, applied in furnaces, furnace types, heat treatment furnaces, etc., can solve the problems of grain growth, stains, uneven grains, etc., and achieve fine and uniform metal crystal structure, rapid heating and Uniform, uniform annealing temperature effect

CN101914736AInactive Publication Date: 2010-12-15ZHEJIANG HAODA IND FURNACE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2010-12-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a continuous annealing furnace, which comprises a furnace body, wherein a feed inlet is arranged on the front end of the furnace body; a discharge opening is arranged on the rear end of the furnace body; a hearth in which material strips are heated is formed in the furnace body; when the furnace operates, the hearth is filled with a protective atmosphere; the front end of the hearth is provided with a tension roll I; the rear end of the hearth is provided with a tension roll II; a circulating fan assembly is arranged on the furnace body; and under the tension actions of the tension roll I and the tension roll I, the material strips floats when blown by high-speed air flow blown out by the circulating fan assembly. The furnace is simple and practical; and the furnace has the advantages of high heating speed, high efficiency, uniform heating temperature, fine grains, easily-controllable performance, complete surface, high equipment automation and the like, so demands of domestic and overseas markets can be satisfied and China-made continuous annealing furnace equipment can be realized.
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Description

technical field

[0001] The invention relates to heat treatment equipment for aluminum plates and strips, in particular to a continuous annealing furnace. Background technique

[0002] The output of China's aluminum strips and foils is insufficient, so they are imported in large quantities year after year. Imported aluminum strips are mainly high-precision strips that cannot be produced or are rarely produced in China. Imported high-precision aluminum strips are the largest foreign exchange users in China's nonferrous metals industry. There is a large demand gap for high-precision strip products in China, which is related to the insufficient assembly of high-precision strip production equipment. Continuous annealing is one of the key equipment for the production of high-precision strip products. The continuous annealing production line consists of uncoiling, sewing, tension control rollers, annealing furnace, cooling chamber, straightening, curling and other equipment, and th...

Examples

Embodiment Construction

[0021] Such as figure 1 with 2 Shown is a schematic structural view of an embodiment of the present invention, a continuous annealing furnace, comprising a furnace body 1, a feed inlet 11 is provided at the front end of the furnace body, and a discharge port 12 is provided at the rear end of the furnace body. There is a furnace 2 for heating the strip, and the furnace is filled with a protective atmosphere during operation. The front end of the furnace is provided with a tension roller I13, and the rear end of the furnace is provided with a tension roller II14. The hot section 21, the heating section 22 and the cooling section 23. The cooling section is provided with an air supply pipe connected to the suction pipe of the fan on the preheating section. The fan sucks the hot air emitted by the annealed strip through the air supply pipe and sends it to the preheating section. The unannealed strip is preheated in the section. The furnace body is provided with a circulation fan ...