Anti-oxidation copper wire annealing furnace and annealing method

Abstract

The invention provides an anti-oxidation copper wire annealing furnace and an annealing method. The anti-oxidation copper wire annealing furnace comprises a furnace body, a spraying mechanism, a liquid storage box, an air cylinder, air compressors, a filter and a wire passing sensor, a plurality of annealing pipes are arranged in the furnace body, and the spraying mechanism, the filter, the liquidstorage box, the air cylinder and the air compressors are connected in sequence. The spraying mechanism comprises a main pipe, solenoid valves, branch pipes and spraying pipes, the filter and the solenoid valves are connected through the main pipe, the branch pipes are connected with the spraying pipes, an ethanol aqueous solution is stored in the liquid storage tank, and the air compressors, thesolenoid valves and the wire passing sensor are all connected with a controller. According to the anti-oxidation copper wire annealing furnace and the annealing method, the ethanol aqueous solution is sprayed to the annealing pipes through compressed air and forms steam through the high temperature of the annealing pipes, oxygen is prevented from entering the annealing pipes, and oxidized parts are reduced through the reducibility of ethanol, so that oxidation blackening is effectively prevented, and the product quality is improved; and the solenoid valves are controlled through the controller, automatic spraying is carried out, precise control is achieved, waste of the ethanol aqueous solution and compressed air is avoided, and the production loss is further reduced.

Description

technical field [0001] The invention relates to the field of copper wire processing, in particular to an anti-oxidation copper wire annealing furnace and an annealing method. Background technique [0002] Copper wire is widely used in the manufacture of wires, cables and other products, and is an indispensable material in modern industry. In the process of copper wire processing, annealing treatment is usually required to achieve the purpose of reducing hardness, eliminating residual stress, reducing deformation and crack tendency, refining grains, etc. [0003] When the copper wire is heated and annealed, it is easy to oxidize with the oxygen in the air, resulting in the deterioration and blackening of the surface quality of the copper wire, which affects the quality of the copper wire. Especially when the wire needs to be changed or the wire is disconnected and needs to be connected and stopped, the copper wire will be more seriously affected by the high temperature state...

AI Technical Summary

Problems solved by technology

However, this kind of steam protection device needs to use high-pressure steam, and the generation of high-pressure steam requires the long-term operation of the steam generator (such as a boiler), which is huge in size, high in energy consumption, and has a high failure rate of the steam generator due to the easy generation of scale.

[0006] On the other hand, nitrogen, carbon dioxide or water vapor protection methods cannot restore the oxidized part, and the protection effect is not good.

[0007] At present, some enterprises also use alcohol as a reducing agent to anneal copper wires, such as "An Anti-oxidation Device for Copper Wire Drawing and Annealing" (application number 201510521192.5), which is equipped with a wiper for wiping the copper wire and a dropper at the exit of the annealing furnace. The dripping device is equipped with anti-oxidation liquid such as alcohol, and the copper wire is cleaned and anti-oxidized through the anti-oxidation liquid such as alcohol; but because the device is located behind the annealing furnace, it can only prevent oxidation of the annealed copper wire treatment, but cannot prevent the oxidation of the copper wire in the annealing tube, the reduction treatment after the oxidation occurs, the influence of the copper wire cannot be completely eliminated, on the other hand, this scheme is aimed at a single copper wire, but the actual production Most of the time, dozens of copper wires are annealed at the same time. This scheme has a multi-layer structure and copper wires need to penetrate into it. The actual operation is cumbersome and difficult to maintain.

[0008] Another solution, such as the utility model patent with the application number CN201720832974.5, provides a copper wire annealing furnace protection device, specifically setting an alcohol brush in front of the annealing furnace, and using copper wires to continuously bring alcohol into the annealing tube , to generate protective gas and reduce copper oxide, there is a defect in this scheme: because the copper wire is used to carry alcohol into the annealing furnace, when the copper wire stops, it cannot continue to carry alcohol

In actual production, when it is necessary to wire or change wires, it is inevitable to stop the wire. At this time, the copper wire will be oxidized and blackened due to staying in the high-temperature annealing furnace for a long time, which will reduce the quality and fail to meet the standard.

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