Hard and semi-hard tin-coated copper wire manufacturing method

Abstract

The invention provides a hard and semi-hard tin-coated copper wire manufacturing method. The method comprises the following steps: heavy-duty drawing: using a copper drawing stock for electrical purposes to make a bare copper wire; medium drawing: sending the qualified bare copper wire to a wire release support, enabling the bare copper wire to be stretched through hole mold drawing, preparing a copper wire with a required wire diameter, conducting annealing softening on the copper wire through a certain annealing voltage, and enabling the copper wire to be a circular soft copper wire with a required external diameter; and tinning: detecting the qualified copper wire and sending the copper wire to a wire feed support, cleaning oil stains, oxides and impurities on the surface of the wire by a cleaning agent, sending the cleaned copper wire to a tinning pan for tinning, scraping superfluous tin off the tinned wire through a specification hole mold, ensuring that a surface coating on the copper wire is smooth and even, cleaning the surface of the tin-coated copper wire after cooling, and making a finished product with a required specification by reeling the wire. The beneficial effects of the method are that tin-coated copper wires manufactured by the method exhibit certain hardness, meet the hardness requirement for some special industries, and are convenient to plug, unplug and rivet.

Description

(1) Technical field [0001] The invention relates to a method for tinning copper wires, in particular to a method for manufacturing hard and semi-hard tinned copper wires. (2) Background technology [0002] Tinning copper wires can prevent the insulating rubber from sticking, the wire cores will become black and brittle, and improve its solderability. Tinned copper wire is mainly used for rubber-insulated mining cables, flexible wires, flexible cables and marine cables as conductive cores, as well as outer shielding braids and brush wires for cables. The existing copper wire tinning method is to tin-plate the soft wire, the copper wire produced is relatively soft, and the mechanical hardness is relatively poor. In the production of insurance pipes and other industries, the tinned copper wire needs to have a certain hardness, which is convenient for tinning. Plugging and riveting of copper wires, therefore, it is necessary to improve the existing copper wire tinning method, s...

AI Technical Summary

Problems solved by technology

The existing copper wire tinning method is to tin-plate the soft wire, the copper wire produced is relatively soft, and the mechanical hardness is relatively poor. In the production of insurance pipes and other industries, the tinned copper wire needs to have a certain hardness, which is convenient for tinning. Plugging and riveting of copper wires, therefore, it is necessary to improve the existing tinning method of copper wires, so that it can tin-plate hard copper wires and semi-hard copper wires, and improve the mechanical hardness of tinned copper wires

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