Quantitative measuring method for corrosion degree of plate grid

A measurement method and grid technology, which are applied in the fields of weather resistance/light resistance/corrosion resistance, measurement device, preparation of test samples, etc., can solve the problem of inability to accurately guide the development of new products, etc. The effect of ensuring integrity

Inactive Publication Date: 2017-10-20
SHUANGDENG GRP
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Although qualitative analysis is a simple and practical method that can guide produc

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  • Quantitative measuring method for corrosion degree of plate grid

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[0017] In the following, the present invention will be further explained based on the drawings and the embodiments.

[0018] The present invention is a method for quantitatively measuring the corrosion degree of lead-acid battery grids, which is measured according to the following steps:

[0019] First, take a sample from the electrode plate to be tested, and select a rectangular sample from the grid. The sample is 20mm wide and 40mm long. The length of the grid is required to be the same as the length of the product. Next, the obtained sample was soaked in pure water. In this example, the sample was soaked at room temperature for 24 hours. The sample was taken out of the pure water. The sample was placed in an oven at 60°C for continuous drying for 6 hours. The sample to be dried After cooling to room temperature, paint the outer layer with epoxy resin, and then let it stand for 12 hours until the epoxy resin is completely solidified. A laser cutting machine is used to cut the sa...

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Abstract

The invention discloses a quantitative measuring method for corrosion degree of a plate grid. The quantitative measuring method comprises the following steps of firstly, sampling from to-be-detected pole plates, and selecting a rectangular sample from the part with the grid plate, wherein the length direction of the plate grid is the same as the length direction of the sample; soaking the sample into pure water, fetching out, sending into an oven to dry, cooling the sample to the room temperature, coating epoxy resin to the outer layer, completely curing the epoxy resin, and cutting the sample into slices, wherein the cutting direction is vertical to the length direction of the plate grid; putting the sample slice into an EDS(energy disperse spectroscopy), scanning by EDS lines, setting the scanning initial point at the center point of the cross section of the sample slice, horizontally scanning towards one side, and calculating the thickness size of the corrosion layer of the outer surface of the plate grid and the content of residual alloy component according to the scanning peak area recorded by the EDS. The quantitative measuring method has the advantage that by performing quantitative measuring, a research and development person can precisely evaluate the service life of the plate grid part of the pole plate of a lead acid storage battery, so that the targeted improvement design can be performed.

Description

technical field [0001] The invention relates to a method for measuring the corrosion degree of a pole plate used in the configuration of lead-acid batteries, in particular, the invention relates to a method for quantifying the corrosion degree of a grid of a pole plate. Background technique [0002] The plate is an essential component of the lead-acid battery. During the charge and discharge process, an electrochemical reaction occurs between the positive and negative plates. The side effect of the electrochemical reaction for the plate is that the surface is corroded. In reality, the key area where the plate is corroded is at the grid. Since the grid is strip-shaped, the surface corrosion layer is larger than the volume of the plate base, and the severely corroded grid will cause creep and elongation under the action of gravity. , or even fracture. Once the plate in the lead-acid battery is damaged due to the corrosion of the grid part, the capacity performance will drop s...

Claims

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Application Information

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IPC IPC(8): G01N17/00G01N1/36G01N1/28G01N1/30
CPCG01N17/00G01N1/286G01N1/30G01N1/36G01N2001/2886G01N2001/364
Inventor 蔡先玉杨宝峰
Owner SHUANGDENG GRP
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