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Tin plating method for copper wire

A copper wire and tin-plating technology, which is applied in the production field of tin-plated copper wire, can solve the problems of limited practical effect and achieve the effects of prolonging the replacement time, improving the composition, and prolonging the replacement time

Active Publication Date: 2020-12-25
鹰潭市众鑫成铜业有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the actual effect is relatively limited
[0005] How to obtain tinned copper wire with uniform coating at low cost is a challenging task

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] 1) Carry out cathodic protection on the copper wire after pickling treatment and lead it into the tin pool, after fully immersing, make the copper wire pass through the tinned eye mold, and lead out the tinned copper wire vertically upward;

[0047] 2) Cool the exported tinned copper wires by about 15°C at a cooling rate of 7°C / min, and then further cool and pull them at a cooling rate of 15°C / min, add guide shaft oil and take up the wires to obtain finished tinned copper wires Wire.

Embodiment 2

[0049] 1) Carry out cathodic protection on the copper wire after pickling treatment and lead it into the tin pool, after fully immersing, make the copper wire pass through the tinned eye mold, and lead out the tinned copper wire vertically upward;

[0050] 2) Cool the exported tinned copper wires by about 15°C at a cooling rate of 5°C / min, and then further cool and draw them at a cooling rate of 20°C / min, add guide shaft oil and take up the wires to obtain finished tinned copper wires Wire.

Embodiment 3

[0052] 1) Carry out cathodic protection on the copper wire after pickling treatment and lead it into the tin pool, after fully immersing, make the copper wire pass through the tinned eye mold, and lead out the tinned copper wire vertically upward;

[0053] 2) Cool the exported tinned copper wires by about 15°C at a cooling rate of 10°C / min, then further cool and draw at a cooling rate of 30°C / min, add guide shaft oil and take up the wires to obtain finished tinned copper wires Wire.

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PUM

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Abstract

The invention discloses a tin plating method for a copper wire. A copper wire is subjected to cathode protection, so that a soldering flux can be omitted before the copper wire is plated with tin, andthe bonding capacity of the tin and the copper wire is not influenced. Meanwhile, copper in the copper wire can be effectively prevented from being dissolved in molten tin, and the replacement time of the molten tin is prolonged. The appearance quality of a tin layer is effectively improved by controlling the cooling rate after tin plating. The dissolution of the copper in the molten tin is effectively inhibited by adjusting the composition of the molten tin, and the replacement time of the molten tin is prolonged.

Description

technical field [0001] The invention relates to a production method of tinned copper wire. Background technique [0002] Tinned copper wire refers to a copper wire coated with a thin layer of metallic tin on the surface of the copper wire. Tinning the copper wire prevents the copper from being oxidized to form a patina when exposed to air. Tinned copper wire can prevent oxidation-reduction reaction and produce patina; it can increase heat dissipation; it can improve electrical conductivity and improve wire performance. In addition, tinning the copper wire can also prevent the insulating rubber from sticking, the wire core 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. Generally speaking, tinned copper wire is relatively soft and has good electrical conductiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C2/08C23C2/38C23C2/26C23C2/02C22C13/00C23F13/02
CPCC23C2/08C23C2/38C23C2/26C23C2/02C22C13/00C23F13/02
Inventor 李钢陈雄军刘莎张书红顾相伟谭锦明
Owner 鹰潭市众鑫成铜业有限公司
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