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Metallographic structure display method of metal powder

A metallographic structure display and metal powder technology, which is applied in the field of analysis and detection, can solve problems such as inconvenient operation, and achieve the effect of simple operation and high efficiency

Inactive Publication Date: 2018-06-19
CHONGYI ZHANGYUAN TUNGSTEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, for the metallographic sample preparation of metal powder, the only method for microstructure display is the copper immersion infiltration method. This method needs to be melted under the protection of hydrogen. Hydrogen is a flammable and explosive gas, and it is very inconvenient to operate.

Method used

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  • Metallographic structure display method of metal powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A method for displaying metallographic structure of metal powder, the steps are as follows:

[0044] WC-Co powder

[0045] (1) Weigh 0.50-1.00 grams of WC-CO powder sintered at 1200 degrees, and 2.00-3.00 grams of phenolic resin, and stir well;

[0046] (2) Pour the mixed sample into an automatic hot mounting machine with a temperature of 180°C, a pressure of 10 MPa, a cooling time of 300 seconds, and a pressure time of 750 seconds, gently stir again, and add 20~ 25 grams of phenolic resin, then, close the pressure cover, after the automatic completion, take it out and cool;

[0047] (3) Put the inlaid sample into the TOPTECH P30FS-1-R5 automatic grinding and polishing machine of Taiwan, China, and use it as P 0 (80 mesh), P 1 (120 mesh), P 2 (240 mesh), P 3 (600 mesh), P 4 The diamond grinding and polishing disc (1200 mesh) is polished in water lubrication, the pressure is 3.5MPa, the time is 50-200 seconds, the sample and the grinding disc are in the same direction, and the s...

Embodiment 2

[0053] A method for displaying metallographic structure of metal powder, the steps are as follows:

[0054] WC-Co-Cr spray powder:

[0055] (1) Weigh 0.50-2.00 grams of WC-CO powder and 2.00-3.00 grams of b phenolic resin, and stir evenly;

[0056] (2) Pour the mixed sample into an automatic hot mounting machine with a temperature of 180°C, a pressure of 11 MPa, a cooling time of 300 seconds, and a pressure time of 750 seconds, gently stir again, and add 25 grams A phenolic resin, then, close the pressure cover, after the automatic completion, take it out and cool;

[0057] (3) Put the inlaid sample into the TOPTECH P30FS-1-R5 automatic grinding and polishing machine of Taiwan, China, and use it as P 0 (80 mesh), P 1 (120 mesh), P 2 (240 mesh), P 3 (600 mesh), P 4 The diamond grinding and polishing disc (1200 mesh) is polished in water lubrication, the pressure is 4.0MPa, the time is 50-600 seconds, the sample is in the same direction as the grinding disc, and the speed is 400 rpm for...

Embodiment 3

[0063] A method for displaying metallographic structure of metal powder, the steps are as follows:

[0064] WC-Co powder

[0065] (1) Weigh 0.50-2.00 grams of unsintered WC-CO powder and 2.00-3.00 grams of b phenolic resin, and stir evenly;

[0066] (2) Pour the mixed sample into an automatic hot mounting machine with a temperature of 180°C, a pressure of 10 MPa, a cooling time of 300 seconds, and a pressure time of 750 seconds, gently stir again, and add 25 grams A phenolic resin, then, cover the mold cover, after the automatic completion, take it out and cool;

[0067] (3) Put the inlaid sample into the TOPTECH P30FS-1-R5 automatic grinding and polishing machine of Taiwan, China, and use it as P 0 (80 mesh), P 1 (120 mesh), P 2 (240 mesh), P 3 (600 mesh), P 4 The diamond grinding and polishing disc (1200 mesh) is polished in water lubrication, the pressure is 4.0MPa, the time is 50-600 seconds, the sample is in the same direction as the grinding disc, and the speed is 400 rpm for fi...

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Abstract

The invention discloses a metallographic structure display method of metal powder. The method comprises the steps as follows: (1) mixing metal powder and phenolic resin to obtain a mixture; (2) placing the mixture in an automatic hot mounting press for mounting treatment to obtain a mounted sample; (3) performing precise grinding and polishing treatment on the mounted sample to obtain a metallographic sample; (4) placing the metallographic sample under a metallographic microscope for metallographic observation and analysis, taking metallographic photos, placing the metallographic sample underan electron microscope for electron microscope observation and analysis and taking electron microscope photos. The method can be effectively used for metallographic structure display of the metal powder and has the advantages of being convenient to operate, high in efficiency, green, environmentally friendly and the like.

Description

Technical field [0001] The invention belongs to the field of analysis and detection. Specifically, the invention relates to a method for displaying the metallographic structure of metal powder. Background technique [0002] At present, for the metallographic sample preparation of metal powder, there is only one method of immersion copper infiltration. This method needs to be melted under the protection of hydrogen. Hydrogen is a flammable and explosive gas, which is very inconvenient to operate. [0003] The raw and auxiliary materials of the alloy include WC, TiC, Ni, Co, CrC, TaC, NbC, TaNbC and other metal powders. The raw material that determines the performance of the alloy is the grain size rather than the "particle size". At the same time, with the new thermal spraying , Plasma spraying, supersonic flame spraying processes, more and more types of spraying materials, and the continuous innovation of the process used to produce cemented carbide mixtures, so the analysis of the...

Claims

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Application Information

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IPC IPC(8): G01N21/84G01N23/2251G01N1/32
CPCG01N1/32G01N21/84G01N23/2251
Inventor 廖诗兰
Owner CHONGYI ZHANGYUAN TUNGSTEN
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