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Preparation method of tungsten block sample for glow discharge mass spectrometry detection

A technology of glow discharge mass spectrometry and tungsten blocks, which is applied in the preparation, sampling, and measuring devices of test samples, which can solve problems such as inability to directly prepare samples, and achieve the effect of reducing testing costs

Inactive Publication Date: 2020-03-06
JIANGSU LONGDA SUPERALLOY MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Traditional metallographic observation, some materials are limited by their own shape and size, and cannot be directly sampled

Method used

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  • Preparation method of tungsten block sample for glow discharge mass spectrometry detection
  • Preparation method of tungsten block sample for glow discharge mass spectrometry detection
  • Preparation method of tungsten block sample for glow discharge mass spectrometry detection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation method for a tungsten block sample detected by glow discharge mass spectrometry comprises the following steps:

[0026] 1. Select the tungsten column with a diameter of 14mm, fix the tungsten column on the cutting machine for water-cooled cutting to prevent overheating, and obtain a tungsten column with a height of 20mm that is flat on both the upper and lower surfaces;

[0027] 2. Grind the upper end surface and the lower end surface of the tungsten column in the same direction with the 80-mesh silicon carbide sandpaper in the grinding machine. The speed of the grinding machine is controlled at 2800r / min until the upper end surface and the lower end surface of the tungsten column are uniform Flat, consistent grain direction;

[0028] 3. Use absolute ethanol to clean the tungsten column to remove the oil on the surface of the tungsten column;

[0029] 4. Place the tungsten column vertically in the center of the metallographic embedding machine, with the u...

Embodiment 2

[0038] A preparation method for a tungsten block sample detected by glow discharge mass spectrometry comprises the following steps:

[0039] 1. Select the tungsten column with a diameter of 12mm, fix the tungsten column on the cutting machine for water-cooled cutting to prevent overheating, and obtain a tungsten column with a height of 26mm whose upper and lower end surfaces are both flat;

[0040] 2. Grind the upper end surface and the lower end surface of the tungsten column in the same direction with the 60-mesh silicon carbide sandpaper in the grinding machine. The speed of the grinding machine is controlled at 2800r / min until the upper end surface and the lower end surface of the tungsten column are uniform Flat, consistent grain direction;

[0041] 3. Use acetone to clean the tungsten column to remove the oil on the surface of the tungsten column;

[0042] 4. Place the tungsten column vertically in the center of the metallographic embedding machine, with the upper end o...

Embodiment 3

[0050] A preparation method for a tungsten block sample detected by glow discharge mass spectrometry comprises the following steps:

[0051] 1. Select the tungsten column with a diameter of 16mm, fix the tungsten column on the cutting machine for water-cooled cutting to prevent overheating, and obtain a tungsten column with a height of 15mm whose upper and lower end surfaces are both flat;

[0052] 2. Grind the upper end surface and the lower end surface of the tungsten column in the same direction through the 40-mesh silicon carbide sandpaper in the sample grinding machine. The speed of the grinding machine is controlled at 2800r / min until the upper and lower end surfaces of the tungsten column are uniform. Flat, consistent grain direction;

[0053] 3. Use carbon tetrachloride to clean the tungsten column to remove the oil on the surface of the tungsten column;

[0054] 4. Place the tungsten column vertically in the center of the metallographic embedding machine, with the up...

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Abstract

The invention relates to a preparation method of a tungsten block sample for glow discharge mass spectrometry detection. The method comprises the following steps of cutting a tungsten bar column, polishing, cleaning the tungsten bar column by an organic reagent, embedding the tungsten bar column, roughly grinding the tungsten block, finely grinding the tungsten bar column, soaking and washing by acid liquor, washing by deionized water, cleaning by the organic reagent and drying by blowing. The problem that the size of the slender tungsten bar is unsuitable for glow discharge mass spectrometrydetection and analysis is solved, and the common metallographic mosaic powder replaces the conductive metallographic mosaic powder with relatively higher price, thereby reducing the detection cost.

Description

technical field [0001] The invention relates to a method for preparing a tungsten block sample used for glow discharge mass spectrometry detection, and belongs to the technical field of metal element analysis and testing. Background technique [0002] Tungsten is a rare metal and an important strategic resource. It is widely used in the iron and steel industry, tungsten carbide-based hard alloys, heat-resistant and wear-resistant alloys, and electric vacuum lighting materials. Tungsten rod is the most common industrial raw material form of tungsten. It is made of tungsten powder with a purity of more than 95% through multiple processes such as mining, grinding, water gravity separation, and refining, and then produced by pressing, sintering, and hammer melting. owned. The prospect of tungsten is broad. As the world's largest tungsten-producing country, the detection and analysis of tungsten is very important. [0003] There are many documents on the determination methods o...

Claims

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Application Information

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IPC IPC(8): G01N1/28G01N1/32G01N27/68
CPCG01N1/28G01N1/286G01N1/32G01N27/68G01N2001/2873
Inventor 陈颖杰年季强吕水永
Owner JIANGSU LONGDA SUPERALLOY MATERIAL CO LTD
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