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Tin-indium alloy coated copper wire and production method thereof

A technology of tin-indium alloy and production method, which is applied to the production of plated copper wire and the field of tin-indium alloy plated copper wire, can solve the problems of uneven thickness of the coating, environmental pollution, unsmooth appearance of the coating, etc. Uniformity, improved cleaning effect

Inactive Publication Date: 2014-07-30
ANHUI TIANZHENG ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current production process of copper wire tinning wire adopts the method of electro-tinning, the continuity of the obtained coating is not good enough, there are defects such as uneven thickness of the coating, rough appearance of the coating, poor adhesion, etc., and a large number of The waste water has caused serious pollution to the environment

Method used

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  • Tin-indium alloy coated copper wire and production method thereof
  • Tin-indium alloy coated copper wire and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The production method of the tin-indium alloy plated copper wire of the present embodiment comprises the following steps:

[0030] A. Make copper rods. The copper rod is made of oxygen-free copper with a copper content of more than 99.98%.

[0031] B. Drawing the above-mentioned copper rod through a wire drawing machine to obtain an oxygen-free copper wire core; the cross-section of the wire core and the finally prepared alloy-coated copper wire is approximately circular.

[0032] In this step, the area reduction rate of the wire drawing die is 13% to 17%, the line speed is 2000 m / min to 2500 m / min, the wire drawing die adopts a polycrystalline diamond die, and its compression angle is 18 ○ ±2 ○ , and the sizing length is 40% ± 10%; in the present embodiment, the lubricating liquid formulation adopted in the drawing process is as follows: 15% modified castor oil, 15% modified sunflower oil, 10% sodium petroleum sulfonate, isothiazole Linone 1‰, triethanolamine 3%, be...

Embodiment 2

[0048] In this example, the lubricating fluid formula used in the drawing process is as follows: 18% modified castor oil, 10% modified sunflower oil, 8% sodium petroleum sulfonate, 1‰ isothiazolinone, 3% triethanolamine, benzene Paratriazole 0.4%, benzene 3%, caustic soda 7%, and the balance is refined machinery oil. All the other production techniques are with embodiment one.

[0049] The tin-indium alloy coated copper wire produced by the present invention reaches the following indicators after testing:

[0050] Comparison table of physical and chemical performance parameters

[0051] Test items Detection method Silver plated soft round copper wire Tinned soft round copper wire Product of the present invention Elongation % GB / T4909.3-2009 20 15 20 ResistivityΩmm2 / m GB / T3048.2-2007 0.017241 0.01770 0.01732 Plating Continuity GB / T4909.9-2009 sodium polysulfide method or ammonium persulfate method Better than required meet the ...

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Abstract

The invention provides an alloy coated copper wire with high performance and low cost and a production method thereof. The electric conductivity, thermal conductivity, solderability, ductility, tensile strength, high temperature resistance, high-frequency property, corrosion resistance and vulcanization resistance of the obtained product are equivalent to those of a silver-coated copper wire, and the tin-indium alloy coated copper wire also has the advantages of uniform coating thickness, bright and clean appearance, good adhesiveness and the like; the energy consumption and the pollution are low in the production process. The tin-indium alloy coated copper wire comprises an oxygen-free copper wire core, and a tin-indium alloy coating is coated by using a tin-indium alloy material containing 0.8 per mill of tin outside the oxygen-free copper wire core. The invention further provides a production method for the tin-indium alloy coated copper wire, comprising the steps of making a copper bar, drawing, cleaning the surface, annealing, cooling, cleaning, washing with acid, carrying out hot-tinning and the like.

Description

technical field [0001] The invention relates to a coated copper wire, in particular to a tin-indium alloy coated copper wire, and also relates to a production method of the coated copper wire. Background technique [0002] Coated copper wires are mainly used for lead-out wires of electronic components, communication cables, light-emitting diodes, textile wires, micro-cables, aerospace cables, high-temperature cables, bakelite skeleton (BOBBIN), high-low frequency transformer needle holders, relay pins, and micro-motors , Computer pin headers, connectors, various types of guide pin pins, etc. Special alloy plated copper wire is more cost-effective, so it is widely used in wire harnesses. The electrode action between the alloy coating and the copper core can effectively improve the oxidation resistance, corrosion resistance, and high temperature resistance of the wire harness, and prolong the service life of the copper wire harness in a high-salinity environment; at the same ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/02C23C2/08C23C2/02
Inventor 王仲东储刘生
Owner ANHUI TIANZHENG ELECTRONICS
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