Metallographic grinder and method for polishing metallographic sample of corrosion layer of battery electrode plate

Abstract

The invention discloses a metallographic grinder and a method for polishing a metallographic sample of a corrosion layer of a battery electrode plate, which can effectively reduce the labor intensity of a grinding operation and improve the grinding efficiency, and is beneficial of obtaining clearly displayed metallographic structures. The metallographic grinder comprises a rotatably arranged grinding wheel, a driving motor, a vertical guide post, a lifting platform, a manual lifting executor, a horizontal guide rod, an electrode plate mounting plate and a translation device, wherein the driving motor is used for driving the grinding wheel to rotate, the vertical guide post is arranged on a rack, the lifting platform can lift up and down along the vertical guide post, the manual lifting executor is used for driving the lifting platform to move up and down in a reciprocating manner, the horizontal guide rod is arranged on the lifting platform, the electrode plate mounting device can move along the horizontal guide rod, and the translation device is arranged on the lifting platform and is used for driving the electrode plate mounting device to move along the horizontal guide rod.

Description

Technical field [0001] The invention relates to the technical field of metallographic sample preparation, in particular to a metallographic grinding device and a metallographic sample polishing method for a corrosion layer of a battery electrode plate. Background technique [0002] In the early days, the positive and negative grid materials of valve-regulated lead-acid batteries were all made of pure lead or lead-calcium alloy. These batteries are used for recycling, and the battery capacity often drops rapidly within 50 cycles. This phenomenon was originally called It was called "no antimony effect"; but it was later regarded as "early capacity loss (PCL)". Studies have shown that because the grid does not have enough antimony, a poorly conductive PbSO4 / α-PbO layer is formed on the active material interface of the grid; although the grid materials used in valve-controlled batteries now have Sn added to improve the plate The electrical conductivity of the interface between the g...

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Problems solved by technology

[0006] The first purpose of the present invention is to overcome the grinding equipment in the prior art when using the operator to hold the sample for grinding, which is not only labor-intensive, but also easily affects the display of the metallographic structure of the sample, especially in the preparation of the metallographic sample of the corrosion layer of the battery plate , has a greater impact on the metallographic structure of the sample, and provides a method that can not only effectively reduce the labor intensity of the grinding operation, improve the grinding efficiency, but also control the pressure during the grinding process stably, and the scratches on the grinding surface obtained by each step of grinding The direction is kept in the same direction, the grinding effect is good, and it is beneficial to obtain a metallographic grinding device with a clear metallographic structure

[0007] Another object of the present invention is to overcome the abrasive grains falling off from the sandpaper in the prior art, which not only easily causes the battery pole plate sample to be scratched, but also produces obvious scratches, which affects the metallographic structure of the pole plate sample. display; and the shedding abrasive grains are also easy to embed in the surface of the pole plate, affecting the metallographic structure display of the pole plate sample, providing a method that can effectively solve the problem that the battery pole plate sample is easily scratched due to the abrasive grains falling off on the sandpaper, And the fallen abrasive particles are easily embedded in the surface of the plate, which affects the metallographic structure of the plate sample. The metallographic sample polishing method of the battery plate corrosion layer

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