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Annealed circular copper wire plated with tin

A round copper wire, tin plating technology, applied in the direction of rod/rod/wire/strip conductor, metal/alloy conductor, etc., can solve the problems of deterioration of brazing performance, damaged appearance, increased contact resistance, etc., to save Cost, effect of avoiding waste of tin

Active Publication Date: 2014-09-24
ANHUI NINGGUO TIANCHENG ELECTRICAL APPLIANCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The silver in this technical solution is exposed to the air for a long time, and the surface of the silver-plated copper wire is easy to react with sulfides and halides in the air, causing the surface to change color, which not only changes the appearance, but also increases the contact resistance and prevents brazing. Performance deteriorates, the technical solution needs to be improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A tinned soft round copper wire, comprising a copper core, the outer side of the copper core is wrapped with a tin layer, a lead and nickel alloy layer is arranged between the copper core and the tin layer, the diameter of the copper core is 1 cm, and the thickness of the tin layer is 30 μm, The thickness of the lead and nickel alloy layer is 10 μm.

[0014] The content of nickel in the lead and nickel alloy layer is: 40%.

Embodiment 2

[0016] A tinned soft round copper wire, comprising a copper core, the outer side of the copper core is wrapped with a tin layer, a lead and nickel alloy layer is arranged between the copper core and the tin layer, the diameter of the copper core is 3 cm, and the thickness of the tin layer is 20 μm, The thickness of the lead and nickel alloy layer is 16 μm.

[0017] The content of nickel in the lead and nickel alloy layer is 34%.

Embodiment 3

[0019] A tinned soft round copper wire, including a copper core, the copper core is wrapped with a tin layer, a lead and nickel alloy layer is arranged between the copper core and the tin layer, the diameter of the copper core is 1.6cm, and the thickness of the tin layer is 24μm , The thickness of the lead and nickel alloy layer is 14 μm.

[0020] The content of nickel in the lead and nickel alloy layer is: 38%.

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Abstract

The invention discloses an annealed circular copper wire plated with tin. The annealed circular copper wire plated with tin comprises a copper core. The copper wire is wrapped by a tin layer. A lead-nickel alloy layer is arranged between the copper core and the tin layer. The diameter of the copper core ranges from 1 cm to 3 cm. The thickness of the tin layer ranges from 20 micrometers to 30 micrometers and the thickness of the lead-nickel alloy layer ranges from 10 micrometers to 16 micrometers. The nickel-lead alloy layer is additionally arranged so that tin atoms can be effectively prevented from being diffused to copper atoms, the situation that the electricity conductivity and the corrosion-resistant performance are influenced because an alloy layer is generated is avoided, waste of the tin is avoided, and cost is saved.

Description

technical field [0001] The invention relates to the technical field of copper wire processing, in particular to a tinned soft round copper wire. Background technique [0002] Silver-plated copper wire is made by concentrically plating silver on the copper core. It combines the characteristics of the two metals, has good electrical conductivity, and a bright and shiny surface, and the silver layer has high resistance to corrosion. Corrosive, it is also widely used in high-end electronic components and used as lead-out wires. [0003] Although the silver layer has strong anti-corrosion properties, if it is exposed to the air for a long time, the surface of the silver-plated copper wire is easy to react with sulfides and halides in the air, causing the surface to change color, which not only changes the appearance, but also makes the Contact resistance increases and solderability deteriorates. It has been found through experiments that the essence of the discoloration of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/02H01B5/02
Inventor 汪洋陈启志
Owner ANHUI NINGGUO TIANCHENG ELECTRICAL APPLIANCES
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