Polishing method for metallographic sample of aluminum alloy

A technology for metallographic samples and aluminum alloys, which is applied in the field of metallographic sample casting of aluminum alloys, can solve the problems of poor quality of metallographic pictures, waste of medicines, easy to be scratched, etc., and achieve less surface scratches and save time. , the effect of reducing the impact

Inactive Publication Date: 2014-12-24
WENZHOU RUIMING IND
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AI Technical Summary

Problems solved by technology

[0002] At present, the sandpaper used in the metallographic sample throwing method of aluminum alloy before product testing is ordinary sandpaper, which is easy to be scratched; the throwing of the small sample (i.e. the body test bar) has to be inlaid and then thrown. , Need to add medicines, it takes m

Method used

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Examples

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Example Embodiment

[0006] The method for polishing the metallographic sample of aluminum alloy applied to the aluminum alloy casting industry of the present invention is as follows: first, the metallographic sample of aluminum alloy is roughly polished on water sandpaper. When water sandpaper is used, the sandpaper should be soaked with water. In the casting process, it is necessary to continuously add water, generally casting for 3-5min; then use a small sample (test bar with a diameter of 6mm) to cast a metal mold (select a small cylindrical mold according to the size of the test bar-the material Steel) rough polishing is performed on the metallographic sample (the metal mold needs to be parallel to the sample and clamped), generally for 3-5 minutes; the metallographic sample will be polished on the polishing fabric after rough polishing Fine polishing (general polishing 4-6min), metallographic polishing agent (usually diamond spray polishing agent) can be sprayed in the polishing process to mak...

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Abstract

The invention discloses a polishing method for a metallographic sample of aluminum alloy in the aluminum alloy casting industry. The polishing method comprises the steps of firstly, performing coarse polishing on a metallographic sample of aluminum alloy on a piece of waterproof abrasive paper, wherein when the waterproof abrasive paper is used, the abrasive paper is required to be soaked with water, and water is continuously added in a polishing process; performing coarse polishing on the metallographic sample by virtue of a metal die for polishing a small-size test piece, and then performing fine polishing on a polished fabric; and finally, performing continuous polishing with a magnesium oxide solution. According to the polishing method, the metal die instead of chemicals is directly used, so that the technology is simplified, the time is shortened, and the polishing efficiency is improved; by the use of the magnesium oxide solution for polishing, the surface polishing quality of a metallographic sample picture is obviously improved, the number of scratches on the surface is relatively small, and an influence of bad peripheral factors on the test sample is weakened, so that an internal tissue structure of the metallographic sample and defects in the metallographic sample can be conveniently observed, a product can be improved, and the quality of the product is improved.

Description

technical field [0001] The invention relates to a metallographic throwing method of a metal, in particular to a metallographic sample throwing method of an aluminum alloy. Background technique [0002] At present, the sandpaper used in the metallographic sample throwing method of aluminum alloy before product testing is ordinary sandpaper, which is easy to be scratched; the throwing of the small sample (i.e. the body test rod) has to be inlaid and then thrown. 1. It needs to add medicines, which takes more time and consumes more medicines. If ordinary sandpaper is used for rough polishing, and then polishing cloth is used for fine polishing, it takes about 30 minutes to polish the sample, and the quality of the metallographic picture produced by polishing is poor and there are many scratches on the surface. Contents of the invention [0003] The object of the present invention is to overcome the above-mentioned deficiencies, and provide a metallographic sample throwing me...

Claims

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Application Information

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IPC IPC(8): G01N1/32
Inventor 叶锦瑞韩玉明杨秋菊吴程陈自江
Owner WENZHOU RUIMING IND
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