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Corrosive liquid for copper-core pillar dipped with lead-tin alloy

A technology of corrosive liquid and copper core, which is applied in the field of copper core column dipped in lead-tin alloy corrosive liquid, which can solve the problems of difficulty in dipping lead-tin alloy and difficult adhesion of lead-tin alloy

Inactive Publication Date: 2009-11-11
HARBIN COSLIGHT STORAGE BATTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, it is very difficult to dip the lead-tin alloy directly on the copper-zinc alloy copper stem, because in the process of processing the copper stem, there is often some processing oil attached to the surface of the copper stem, causing the lead-tin alloy Difficult to attach to the surface of the copper stem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] Firstly, the corrosion solution is prepared according to ammonium chloride: zinc chloride: water in a weight ratio of 5:19:76.

[0010] Put the corrosive liquid into a flat plate, the height of the liquid level depends on the height of the copper core column dipped in the lead-tin alloy.

[0011] Put the copper core column vertically into the plate and take it out in 3-5 seconds.

[0012] Let it dry naturally or bake it dry for the next step of dipping in lead-tin alloy.

[0013] The qualification rate of the copper core column dipped in the corrosive solution is 100% in the process of dipping the lead-tin alloy.

[0014] Above, the corrosive solution provided by the present invention is impregnated with the copper core column and then dipped in lead-tin alloy to produce the positive and negative terminals of the lead-acid storage battery. In this paper, the whole impregnation process is explained, and the explanation knowledge of the above embodiments is used to help ...

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PUM

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Abstract

The invention provides a corrosive liquid for ensuring that a copper-core pillar on a lead terminal of a lead acid storage battery is easier to dip lead-tin alloy. Most lead acid storage battery terminals are poured by copper-core pillars and lead alloy, and before the terminals are poured, a layer of the lead-tin alloy needs to be dipped on the copper-core pillars for improving the binding force between the copper-core pillars and the lead alloy. However, in practice, the copper-core pillars is formed by mechanically processing copper zinc alloy, and in the machining process, machining oil is usually adhered on the surfaces of the copper-core pillars, thereby causing the lead-tin alloy to be difficult to adhere on the surfaces of the copper-core pillars. In the invention, the copper-core pillars are dipped with a layer of the corrosive liquid in advance and then dipped with a layer of the lead-tin alloy, thus the lead-tin alloy is quite easy to adhere on the outer surfaces of the copper-core pillars. The corrosive liquid has extremely low cost which can be ignored and extremely simple operation.

Description

[technical field] [0001] The invention relates to a treatment method for removing the processing oil on the surface of the copper core column by immersing the corrosion solution in the process of dipping the copper core column of the positive and negative terminals of the lead-acid storage battery into a lead-tin alloy [Background technique] [0002] Due to the characteristics of long cycle life, small self-discharge, no memory effect, and low price, lead-acid sealed batteries have attracted much attention as backup power in communications, electric power, telecommunications, and large UPS in recent years. With the rapid development of communication, electric power and telecommunications, the demand for lead-acid sealed storage batteries is increasing day by day. Lead-acid batteries tend to loosen the copper core column in the lead pole column when the connection bar is attached during the installation process, causing the battery to be scrapped. In order to avoid the occur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/24
Inventor 王常波
Owner HARBIN COSLIGHT STORAGE BATTERY