Copper wire drawing process

Abstract

The invention discloses a copper wire drawing process. The process comprises alkaline electrolysis, cleaning, oxygen content measuring, wire drawing, annealing, winding and inspection. A copper rod issubjected to electrolysis in an alkaline solution containing sodium hydroxide and sodium tartrate, and a copper oxidation film is removed; after reaching the schedule time, cleaning is carried out, after drying, a pulse melting infrared absorption method is used for measuring the oxygen content of a copper rod with an oxidation film removed, when the oxygen content is lower than 6000 PPM, the copper rod can be used, a large wire drawing machine, a medium wire drawing machine and a micro wire drawing machine are adopted in wire drawing, the large wire drawing machine and the medium wire drawing machine carry out wire drawing, then, annealing treatment is carried out, and after micro wire drawing, the winding machine is adopted for winding, conductive, aging stability, and thermal stabilitytests are carried out. The oxide layer is removed, alkaline electrolysis is adopted, pollution and poisonousness of chemical removal strong acid and strong base can be avoided, the pulse melting infrared absorption method is adopted for detecting the oxygen content, after wire drawing, copper thorn or fragments can be avoided, the wire yield is improved, the cost is reduced, the annealing qualityis high, and electric energy is saved.

Description

technical field [0001] The invention belongs to the field of copper wire processing, and in particular relates to a copper wire drawing process for improving the drawing quality and avoiding excessive abrasion of the drawing film. Background technique [0002] Copper wire drawing refers to a plastic processing method that applies tension to the copper wire to pass through the die hole to obtain a product with the same size and shape as the die hole. Sometimes Φ2.6mm processed copper is used as the main raw material for wire drawing, but in most cases, Φ8.0mm copper rod is used. Copper should have good electrical conductivity, thermal conductivity and ductility, and it has better mechanical properties and is easy to weld; The purity of copper is ≥99.97%, and the nominal volume resistivity should be less than 0.017241Ω*mm2 / m at 20°C. [0003] In current production, if the oxygen content in the copper rod is too high, it will cause copper thorns or slivers after wire drawing. ...

AI Technical Summary

Problems solved by technology

However, this method has low production efficiency, high labor intensity, and dust and noise pollution.

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