Production method of tin-bismuth alloy coated copper clad steel wire

A technology of copper-clad steel wire and production method, applied in the production field of copper-clad steel wire

Active Publication Date: 2010-09-08
NANTONG HONGYANG METAL PRODS
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, metal tin has a bad characteristic: it is very eas...

Method used

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Embodiment Construction

[0021] A production method of a tin-bismuth alloy copper-clad steel wire, which sequentially includes pickling and anti-embroidery treatment of the steel wire, the first drawing treatment, the first heat treatment, copper electroplating, the second drawing treatment, and the second drawing treatment. Secondary heat treatment, electroplating tin, described electroplating tin is electroplating tin-bismuth alloy, the electroplating solution of electroplating tin-bismuth alloy is made up of following weight components:

[0022] Tin methanesulfonate 100~300g / L (eg 100g / L, 200g / L, 300g / L)

[0023] Bismuth methanesulfonate 1~10g / L (eg 1g / L, 5g / L, 10g / L)

[0024] Methanesulfonic acid 100~150g / L (eg 100g / L, 120g / L, 150g / L)

[0025] Additive 310M 10~60ml / L (eg 10ml / L, 40ml / L, 60ml / L)

[0026] the rest is water;

[0027] Wherein the additive 310M is a grain refiner with lauramide propionate of 5-10% (example 5%, 7%, 10%) weight concentration, and 5-10% (example 5%, 7%, 10%) ) weight ...

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Abstract

The invention discloses a production method of tin-bismuth alloy coated copper clad steel wires, which successively comprises acid pickling and rust protection treatment, first pullout treatment, first heat treatment, second pullout treatment, second heat treatment and tin electroplating. The tin electroplating means tin-bismuth alloy electroplating. The invention can effectively prevent tin pest, can substitute for leaded wires to be applied to lead wires, connecting wires and the like of electronic products, and can be widely applied to the field of the electronic products.

Description

Technical field: [0001] The invention relates to a production method of copper-clad steel wire. Background technique: [0002] Tin is an excellent solder metal and is widely used in electronic products. However, metal tin has a bad characteristic: at a temperature below minus 13 degrees, it is very easy to produce "tin plague". That is, it is transformed into powdered metal tin, and once produced, it "infects" each other. Invention content: [0003] The object of the present invention is to provide a production method of tin-bismuth alloy copper-clad steel wire that can effectively prevent the occurrence of "tin plague". [0004] Technical solution of the present invention is: [0005] A production method of a tin-bismuth alloy copper-clad steel wire, which sequentially includes pickling and anti-embroidery treatment of the steel wire, the first drawing treatment, the first heat treatment, copper electroplating, the second drawing treatment, and the second drawing treat...

Claims

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Application Information

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IPC IPC(8): C25D3/56C25D3/60C25D5/34C25D5/48C25D5/50
Inventor 易新民
Owner NANTONG HONGYANG METAL PRODS
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