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

A technology of tinned copper wire and manufacturing method, which is applied in cable/conductor manufacturing, hot-dip plating process, coating, etc., can solve problems such as poor mechanical hardness, and achieve the effect of easy plugging and riveting

Inactive Publication Date: 2016-02-03
天津市宏远电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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, wh

Method used

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

Examples

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Example Embodiment

[0017] Example 1

[0018] 1. The φ8.0mm electrical copper wire blank is made into a φ2.6mm bare copper wire by a large drawing method.

[0019] 2. The qualified bare copper wire of φ2.6mm is fed into the wire-rewinding frame, and drawn by the inner die of the wire drawing machine to obtain a copper wire of φ0.60mm. The copper wire is then subjected to a certain annealing voltage of 30.5V and an annealing current of 270A. Annealing and softening make it a semi-hard copper wire with an outer diameter of φ0.60mm. The tensile strength of the prepared copper wire is 32.7KG / MM2, and the elongation is 12-14%.

[0020] 3. The semi-hard copper wire that has passed the inspection is sent to the wire rack, the surface oil, oxides and impurities are cleaned with a cleaning agent, and the impurities are scraped off with rubber, and then the cleaning agent and impurities on the surface of the copper wire are cleaned with water, and finally with water Clean the surface and clean the surface of th...

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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...

Claims

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Application Information

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IPC IPC(8): H01B13/00H01B13/22C23C2/08C23C2/38
Inventor 姚锡福邱铁龙邱鹏杜昌坡张锡哲
Owner 天津市宏远电子有限公司
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