Heating structure of annealing furnace

Abstract

The invention discloses a heating structure of an annealing furnace. The heating structure is arranged in a furnace, the furnace comprises a shell and three heat-insulation layers, the heat-insulation layers are positioned on the inner wall of the shell, and every two adjacent heat-insulation layers seamlessly tightly cling to each other. The heating structure comprises a plurality of electric furnace heating wire discs and heating wires, the heating wires are in one-to-one correspondence with the electric furnace heating wire discs and are connected with the electric furnace heating wire discs, the group number of heating wires is equal to the number of the electric furnace heating wire discs, and the multiple electric furnace heating wire discs are parallelly arranged along the length direction of the furnace at intervals; each group of heating wires comprises two single wires, the two single wires of each group of heating wires are connected with two ends of the corresponding electric furnace heating wire disc, and the heating wires are mounted in furnace disc holes of the shell and are nickel-chromium wires; a plurality of annealing furnace tubes are further arranged in the furnace, and to-be-annealed wires can pass the annealing furnace tubes. The heating structure has the advantages the inside of the furnace can be uniformly and stably heated, accordingly, the wires can be uniformly and stably annealed, and good stress relief effects can be realized; the inside of the furnace is heated by the nickel-chromium wires, and accordingly the heating structure is low in energy consumption, long in service life and low in cost; the furnace is excellent in heat-insulation performance, and accordingly energy consumption further can be reduced.

Description

technical field [0001] The invention belongs to the technical field of an annealing furnace structure for heat treatment, and in particular relates to a heating structure of an annealing furnace for copper wires. Background technique [0002] Copper wire is the main component of various cables. Residual stress will be generated in the production process of existing copper wire. In order to improve its performance, it is necessary to add an annealing process to eliminate this residual stress. [0003] However, the heating method of the existing copper wire annealing device is mainly to use heating tubes for heating, which has the following problems: first, the heating energy consumption of the heating tubes is large, which wastes electric energy; second, the heat is relatively concentrated, which makes the temperature uniformity in the furnace body poor, resulting The stress relief effect of the copper wire is poor, resulting in uneven annealing of the copper wire; third, the...

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Problems solved by technology

[0003] However, the heating method of the existing copper wire annealing device is mainly to use heating tubes for heating, which has the following problems: first, the heating energy consumption of the heating tubes is large, which wastes electric energy; second, the heat is relatively concentrated, which makes the temperature uniformity in the furnace body poor, resulting The stress relief effect of the copper wire is poor, resulting in uneven annealing of the copper wire; third, the heating tube has a short service life and needs to be replaced frequently, which not only affects production, but also consumes materials and increases production costs

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