Preparation method of sample for determining oxygen content in G13Cr4Mo4Ni4V steel

A technology of oxygen content and cylindrical steel, which is applied in the preparation, sampling, and measuring devices of test samples, which can solve the volatility of measurement results, inaccurate test results, and the inability to ensure consistent surface crystallinity, flatness, and brightness, etc. problem, to achieve the effect of saving time and effort in sample preparation, large fluctuation, and accurate oxygen content measurement value

Inactive Publication Date: 2020-04-07
AVIC HARBIN BEARING
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the traditional machining method cannot guarantee the consistent surface crystallinity, flatness and brightness of the sample for measuring the oxygen content in steel, resulting in inaccurate test results and large fluctuations in the measurement results, and provides Preparation method of sample for determination of oxygen content in G13Cr4Mo4Ni4V steel

Method used

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  • Preparation method of sample for determining oxygen content in G13Cr4Mo4Ni4V steel
  • Preparation method of sample for determining oxygen content in G13Cr4Mo4Ni4V steel
  • Preparation method of sample for determining oxygen content in G13Cr4Mo4Ni4V steel

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specific Embodiment approach 1

[0010] Specific implementation mode one: the present implementation mode is the preparation method of the oxygen content measurement sample in G13Cr4Mo4Ni4V steel, specifically completes according to the following steps:

[0011] 1. Wire cutting: the steel material is cut into steel sample blanks by wire cutting, the diameter of the steel sample blanks is 0.80cm to 0.9cm, and the height of the steel sample blanks is 1.3cm to 1.5cm;

[0012] 2. Lathe processing: Use a lathe to turn the rough steel sample into a cylindrical steel sample with a fixed specification. The mass of the cylindrical steel sample is 1g±0.1g, and the diameter of the cylindrical steel sample is 0.40cm~0.45cm , the height of the cylindrical steel sample is 0.8cm to 1cm, and the surface roughness of the cylindrical steel sample is Ra<1.6μm;

[0013] 3. Polishing: Cr 2 o 3 The aqueous solution is used to electrolytically polish the cylindrical steel sample to obtain the polished steel sample;

[0014] 4. C...

specific Embodiment approach 2

[0015] Specific embodiment 2: the difference between this embodiment and specific embodiment 1 is that in step 2, the steel sample is roughly cut by a lathe at a cutting speed of 80m / min to 100m / min and a back cut of 1mm to 1.5mm. Blank car to a cylindrical steel sample of fixed specifications. Others are the same as the first embodiment.

specific Embodiment approach 3

[0016] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: Cr described in step three 2 o 3 Cr in aqueous solution 2 o 3 The mass ratio with water is 1:10. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a preparation method of a sample for determining the oxygen content in G13Cr4Mo4Ni4V steel, and relates to a preparation method of a sample for determining the oxygen content in steel. The invention aims to solve the problems of an inaccurate test result and a large measurement result fluctuation caused by incapability of ensuring consistency of surface crystallinity, flatness and brightness of an oxygen content measurement sample in steel in a traditional machining mode. The preparation method comprises the following steps: 1, linear cutting; 2, lathe machining; 3, polishing; and 4, cleaning, so that the sample for measuring the oxygen content in the G13Cr4Mo4Ni4V steel is obtained. The method has the advantages that the oxygen content measured value is accurate; and data stabilization and little fluctuation. The method is mainly used for preparing the sample for measuring the oxygen content in the G13Cr4Mo4Ni4V steel.

Description

technical field [0001] The invention relates to a method for preparing a sample for measuring oxygen content in steel. Background technique [0002] According to the sample preparation method for the determination of oxygen specified in the GB / T20066-2006Z standard, the surface oxide of the sample is removed by grinding to avoid local overheating. Sand each surface with fine sand. All operations must use tweezers, but due to the constraints of the sample, the ON736 oxygen and nitrogen analyzer requires a sample of Φ0.40cm~Φ0.45cm; a cylinder with a height of 0.8cm~1cm and a mass of about 1g for the determination of oxygen elements. . The sample volume and mass are small. Therefore, it is difficult to ensure that local overheating is avoided during the grinding process, and it is ideal to clamp with tweezers, which cannot be realized. Moreover, the traditional machining method cannot guarantee that the surface crystallinity, flatness and even brightness of each sample are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N1/32G01N1/34
CPCG01N1/286G01N1/32G01N1/34G01N2001/2873
Inventor 刘永宝杨晶赵强王世宇
Owner AVIC HARBIN BEARING
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