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A copper wire hot-dip tinning process

A technology of hot-dip tinning and copper wire, applied in hot-dip plating process, metal material coating process, coating, etc., can solve the problems of high equipment cost, low operability, and complicated device structure, so as to reduce material consumption, The effect of shortening the process flow and saving investment

Active Publication Date: 2011-12-14
江西正导精密线材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The tinning machine has no pickling device, which reduces air pollution and avoids object corrosion. It is undoubtedly an environmentally friendly device, but the structure of the device is complicated. For enterprises with conventional tinning machines, it is necessary to carry out this process. The device needs to be replaced, so there are problems of high equipment cost and low operability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Take the production of 0.02mm tinned alloy copper wire as an example.

[0020] First place the drawn 0.02mm hard alloy copper wire under the wire rack, and then set the temperature parameters as follows: the annealing temperature is 350 o C, the drying temperature is 150 o C, the tinning temperature is 250 o C. After each temperature parameter reaches the set value, start threading, then pass the alloy copper wire through the annealing tube with water vapor through the guide wheel, and then directly carry out the tinning process after drying, and finally the alloy copper wire is The speed is 250m / min and it is directly collected into the designated reel.

Embodiment 2

[0022] Take the production of 0.03mm tinned alloy copper wire as an example.

[0023] First place the pulled 0.03mm hard alloy copper wire under the pay-off frame, and then set the temperature parameters as follows: the annealing temperature is 360 o C, the drying temperature is 160 o C, the tinning temperature is 255 o C. After each temperature parameter reaches the set value, start threading, then pass the alloy copper wire through the annealing tube with water vapor through the guide wheel, and then directly carry out the tinning process after drying, and finally the alloy copper wire is The speed is 220 m / min and it is directly collected into the designated reel.

Embodiment 3

[0025] Take the production of 0.05mm tinned alloy copper as an example.

[0026] First place the pulled 0.05mm hard alloy copper wire under the pay-off frame, and then set the temperature parameters as follows: the annealing temperature is 400 o C, the drying temperature is 180 o C, the tinning temperature is 260 o C. After each temperature parameter reaches the set value, start threading, then pass the alloy copper wire through the annealing tube with water vapor through the guide wheel, and then directly carry out the tinning process after drying, and finally the alloy copper wire is passed through After tinning, it is directly collected into the designated reel at a speed of 200m / min.

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PUM

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Abstract

The invention relates to a copper wire hot tinning process which comprises procedures of wire charging, annealing, drying, tinning and wire discharging. The process uses an existing tinning device, and realizes the tinning effect of the prior art through process optimization of continuously introducing water vapor in the annealing procedure and controlling the drying temperature and without cooling or pickling procedures, and the finished product of tinned copper wire is not oxidized or changes color after long-term exposure in the air. The invention is brief in process flow, low in tin loss, can save investment, is green and pollution-free, and is worthy of popularization and application in wire and cable industry.

Description

technical field [0001] The invention relates to a copper wire hot tinning process. Background technique [0002] In the production of wire and cable, the most commonly used plated wire is tinned copper wire, which is mainly used for conductive cores of rubber-insulated mining cables, rolling stock cables, and marine cables. After the copper wire is tinned, it can effectively prevent the oxidation of the copper wire and the rubber stickiness and blackening of the copper wire caused by the contact between the copper wire and the rubber, and at the same time improve the service life of the cable and the weldability of the core. The hot-dip tinning process has the advantages of low equipment investment, high work efficiency, and simple operation, and is widely used in the wire and cable industry. [0003] At present, the hot-dip tinning process of copper wire includes the following steps: unwinding—annealing—cooling—drying—pickling—tinning—reeling. For the existing process, th...

Claims

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Application Information

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IPC IPC(8): C23C2/08C23C2/38
Inventor 李源鸿李韦桦
Owner 江西正导精密线材有限公司
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