Efficient metallographic examination sample grinding method

A metallographic inspection and grinding method technology, which is applied in the field of efficient metallographic inspection sample grinding, can solve the problems of lower sample preparation efficiency, increased labor intensity, and high grinding requirements, so as to improve sample processing efficiency and reduce grinding Steps to ensure the effect of grinding quality

Pending Publication Date: 2022-04-26
建龙北满特殊钢有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Metallographic inspection samples have high requirements on grinding. The grinding of conventional samples requires five steps: coarse grinding, semi-fine grinding, fine grinding, rough polishing, and fine polishing. The overall grinding time is relatively long, and the sample All are manually ground by inspectors. When there are few samplers and a large number of samples, the labor intensity will increase and the efficiency of sample preparation will be further reduced.

Method used

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  • Efficient metallographic examination sample grinding method
  • Efficient metallographic examination sample grinding method
  • Efficient metallographic examination sample grinding method

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Experimental program
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Effect test

specific Embodiment approach 1

[0030] An efficient metallographic inspection sample grinding method, grinding 10*20mm metallographic standard size sample includes the following steps:

[0031] Step 1. Coarse grinding: use a metallographic sample grinding machine to grind with a 50# grinding wheel, the diameter of the grinding wheel is 400mm, and the grinding time used when the grinding depth is 0.5mm is 50s.

[0032] In an efficient metallographic examination sample grinding method described in this embodiment, the line-out speed of the grinding wheel in step 1 is 1821.2 m / min.

[0033] A kind of high-efficiency metallographic examination sample grinding method described in this embodiment, step 1 is through improving the metallographic sample grinding machine, changing the equipment parameters used for grinding and replacing the 50# grinding wheel for grinding, and changing the parameters of the original equipment The size of the grinding tray is sufficient to be able to install a grinding wheel with a dia...

specific Embodiment approach 2

[0039] A kind of high-efficiency metallographic examination sample grinding method according to specific embodiment 1 also includes the following steps:

[0040] Step 2, fine grinding: Use a polishing machine to grind with 240# sandpaper, the diameter of the sandpaper is 300mm, the speed is 1450r / min, and the grinding time is 22s.

[0041] In an efficient metallographic inspection sample grinding method described in this embodiment, the line speed of the sandpaper in step 2 is 1365.9 m / min.

[0042] In an efficient metallographic examination sample grinding method described in this embodiment, the grinding depth in step 2 is 0.3 mm.

[0043] A kind of high-efficiency metallographic examination sample grinding method described in the present embodiment, the two steps of step 2 combining conventional semi-fine grinding 600# and fine grinding 1500# are one step, and the improved grinding and polishing equipment used is installed 240 #Sandpaper, the maximum speed: 1450r / min, the ...

specific Embodiment approach 3

[0048] A kind of high-efficiency metallographic examination sample grinding method according to specific embodiment 1 also includes the following steps:

[0049] Step 3. Coarse polishing: use a grinding and polishing machine to perform rough polishing with coarse canvas combined with emery suspension. The diameter of the coarse canvas is 400mm, the rotational speed is 1450r / min, and the grinding time is 30s.

[0050] In the highly efficient method for grinding samples for metallographic examination described in this embodiment, the concentration of the corundum suspension in step 3 is 5-10 wt%, and the corundum used is 380# corundum.

[0051] In an efficient metallographic inspection sample grinding method described in this embodiment, the line-out speed of the coarse canvas in step 3 is 1821.2 m / min, and the grinding depth is 0.1 mm.

[0052] An efficient metallographic examination sample grinding method described in this embodiment, the maximum speed of the improved grinding...

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Abstract

The invention discloses an efficient metallographic test sample grinding method, and belongs to the technical field of metallographic sample preparation. The invention aims to improve the grinding efficiency of the metallographic specimen. According to the method, a metallographic specimen grinding machine is adopted for grinding through a 50 # grinding wheel, the diameter of the grinding wheel is 400 mm, the grinding depth is 0.5 mm, and the grinding time is 45-50 s; a grinding and polishing machine is adopted for grinding through 240 # abrasive paper, the diameter of the abrasive paper is 300 mm, the rotating speed is 1450 r / min, and the grinding time is 20-22 s; rough polishing is carried out through a grinding and polishing machine by combining canvas with carborundum suspension liquid, the diameter of the canvas is 400 mm, the rotating speed is 1450 r / min, and the grinding time is 25-30 s; fine polishing is carried out by combining woolen cloth and aluminum oxide polishing powder suspension through a grinding and polishing machine, the diameter of the woolen cloth is 400 mm, the rotating speed is 1450 r / min, and the grinding time is 18-20 s. According to the invention, the grinding time is reduced by 213s.

Description

technical field [0001] The invention belongs to the technical field of metallographic sample preparation, and in particular relates to an efficient metallographic inspection sample grinding method. Background technique [0002] Metallographic examination is mainly to determine the three-dimensional spatial morphology of the alloy structure by using the principle of quantitative metallography, using the measurement and calculation of the metallographic microstructure of the two-dimensional metallographic sample grinding surface or thin film, so as to establish the relationship between the alloy composition, structure and properties. Quantitative Relationship. With the continuous development of the steel industry, in each production process, the chemical composition of the material must be determined first, and then the construction equipment and manufacturing process of the material must be systematically understood. It mainly refers to smelting, casting, heat treatment and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28
CPCG01N1/286G01N2001/2866
Inventor 陈迦杉巩云峰夏伟鹤王钊张百慧
Owner 建龙北满特殊钢有限责任公司
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