Method for preparing lead and lead alloy metallic phase samples and exposing texture

A metallographic sample and alloy technology, which is applied in the preparation of metallographic samples of lead and its alloys and microstructure exposure experiments, in the field of preparation of metallographic samples of lead and its alloys, can solve the cost of consumables, working time and the sample preparation process. Satisfactory and other problems, to avoid surface structure deformation, simple operation, short process effect

Active Publication Date: 2010-07-28
NINGBO HUASUN ALUMINUM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it has been improved, the cost of consumables for sample preparation, the working time for sample preparation and the sample preparation process are not very satisfactory

Method used

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  • Method for preparing lead and lead alloy metallic phase samples and exposing texture
  • Method for preparing lead and lead alloy metallic phase samples and exposing texture
  • Method for preparing lead and lead alloy metallic phase samples and exposing texture

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0026] A piece of sample with a specification of 20mm×20mm was cut with a manual hacksaw on an industrial pure lead ingot. The specific implementation steps are as follows:

[0027] a. Wet grinding: the sample is first polished with a fine-toothed flat file, using flowing water as a coolant and lubricant, and then mechanically polished;

[0028]b. Mechanical polishing: put the wet-ground sample in water containing detergent, wash it in an ultrasonic vibration cleaner, and then perform mechanical polishing for about 2 minutes: the polishing speed is 200r / min; at this time, the polishing liquid is both a coolant and a Lubricant: Spray chromium oxide with a particle size of 0.5 μm on the microporous fabric polishing flannelette, mix it into water and stir the suspension evenly as a polishing liquid, polish the sample, observe the surface state of the sample under a microscope, and confirm that the surface of the sample is scratched by a file. Chemical polishing after the marks d...

example 2

[0032] Cut a piece of sample with a size of 20mm×20mm on the battery grid alloy sample with a manual hacksaw. The specific implementation steps are as follows:

[0033] a. Wet grinding: the sample is first polished with a fine-toothed flat file, using flowing water as a coolant and lubricant, and then mechanically polished;

[0034] b. Mechanical polishing: put the wet-ground sample in water containing detergent, wash it in an ultrasonic vibration cleaner, and then perform mechanical polishing for about 2 minutes: the polishing speed is 500r / min; at this time, the polishing liquid is both a coolant and a Lubricant: Spray chromium oxide with a particle size of 0.5 μm on the microporous fabric polishing flannelette, mix it into water and stir the suspension evenly as a polishing liquid, polish the sample, observe the surface state of the sample under a microscope, and confirm that the surface of the sample is scratched by a file. Chemical polishing after the marks disappear com...

example 3

[0038] Cut a piece of sample with a size of 20mm×20mm on the battery grid alloy sample with a manual hacksaw. The specific implementation steps are as follows:

[0039] a. Wet grinding: the sample is first polished with a fine-toothed flat file, using flowing water as a coolant and lubricant, and then mechanically polished;

[0040] b. Mechanical polishing: put the wet ground sample in water containing detergent, wash it in an ultrasonic vibration cleaner, and then perform mechanical polishing for about 2 minutes: the polishing speed is 300r / min. At this time, the polishing liquid is both a coolant and a lubricant. agent; spray chromium oxide with a particle size of 0.5 μm on the microporous fabric polishing flannelette, transfer it into water and stir the suspension evenly as a polishing liquid, polish the sample, observe the surface state of the sample under a microscope, and confirm the file scratches on the surface of the sample Chemical polishing after complete disappear...

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Abstract

The invention discloses a method for preparing lead and lead alloy metallic phase samples and exposing texture. The method comprises a wet grinding step in which a fine-tooth flat file is used, a mechanical polishing step, a chemical polishing step and a texture exposing step, wherein in the chemical polishing step, chemical polishing solution consisting of absolute ethyl alcohol, glycerin, hydrogen peroxide and lactic acid is used; and in the texture exposing step, an etching agent consisting of the absolute ethyl alcohol, the glycerin and the hydrogen peroxide is used, so the sample for observing a metallic phase is successfully prepared. The method has the characteristics of simple and convenient operation, short sample preparing time and low material consumption, high texture exposing definition of the prepared sample, and is particularly suitable for preparing the lead and lead alloy metallic phase samples and exposing the texture.

Description

technical field [0001] The invention relates to the technical field of metallographic sample preparation and tissue exposure experiments of lead and its alloys, and in particular provides a method for the preparation and tissue exposure of lead and its alloy metallographic samples, which is suitable for preparing metallographic samples of lead and its alloys . Background technique [0002] As we all know, lead has a low melting point, good corrosion resistance, large specificity, low tensile strength, lead Mohs hardness 1.5, due to its soft texture, it will deform under low pressure, and pure lead will recrystallize at room temperature . Existing similar methods for preparing metallographic samples bring difficulties to the preparation of metallographic samples of lead and its alloys. The basic steps are: coarse grinding: the sample is first passed through 400 # Silicon carbide water sandpaper→600 # Silicon carbide water sandpaper→800 # Silicon carbide water sandpaper is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N1/32
Inventor 李春华谢先娇张红周高龙
Owner NINGBO HUASUN ALUMINUM
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