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Preparing method of vanadium-aluminum alloy oxygen content determination samples

A vanadium-aluminum alloy, oxygen content technology, applied in the direction of test sample preparation, sampling, measuring equipment, etc., can solve the problem that the uniformity of the vanadium-aluminum alloy sample cannot be guaranteed, and achieve the avoidance of sample oxidation, high precision, heavy weight, etc. Good performance and reproducibility

Active Publication Date: 2017-03-15
PANGANG GRP PANZHIHUA STEEL & VANADIUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to solve the dilemma that the vanadium aluminum alloy sample is oxidized and the uniformity cannot be guaranteed, and to achieve the purpose of accurate measurement

Method used

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  • Preparing method of vanadium-aluminum alloy oxygen content determination samples
  • Preparing method of vanadium-aluminum alloy oxygen content determination samples
  • Preparing method of vanadium-aluminum alloy oxygen content determination samples

Examples

Experimental program
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Effect test

preparation example Construction

[0015] The preparation method of vanadium aluminum alloy oxygen content determination sample of the present invention comprises the steps:

[0016] (1) Coarse crushing: After the vanadium-aluminum alloy is roughly crushed to 5mm-20mm, select 80g-100g of fresh cross-section samples all around;

[0017] (2) Crushing: crushing for 5-10 seconds;

[0018] (3) Sieving: use 20-mesh and 80-mesh sample sieves to overlap and sieve, discard the samples on the 20-mesh sample sieve and under the 80-mesh sample sieve, and take the sample in the middle of 0.180mm ~ 0.900mm as the analysis sample.

[0019] Preferably, the crushing time described in step (2) is 5 s to 8 s for 50 AlV to 70 AlV, and 8 s to 10 s for 75 AlV to 80 AlV.

[0020] Preferably, the pulverization described in step (2) adopts a high manganese alloy steel bowl.

[0021] Preferably, the crushing time described in step (2) is 5s for both 55AlV and 65AlV, and 10s for 80AlV.

Embodiment 1

[0024] Take 500g of 55AlV alloy, (1) Coarse crushing: Coarsely crushing the vanadium-aluminum alloy to -20mm, select 100g of fresh cross-sections around 5mm to 20mm, and no oxide layer on the surface; (2) Crushing: In high manganese alloy steel Crush in the material bowl for 5 seconds; (3) Sieve: use 20-mesh and 80-mesh sample sieves to overlap and sieve, discard the samples on the 20-mesh sample sieve and the sample under the 80-mesh sample sieve, and obtain the intermediate sample with a particle size of 0.180-0.900mm. As the analysis sample, the oxygen content in vanadium aluminum alloy was determined by pulse-inert gas melting method.

[0025] The test of the above-mentioned Example 1 was repeated 9 times, and the results of the oxygen content are shown in Table 1.

[0026] Table 1 Example 1 Oxygen content / wt%

[0027]

Embodiment 2

[0029] Take 400g of 65AlV alloy, (1) Coarsely crushing: Coarsely crush the vanadium-aluminum alloy to -20mm, select 5mm to 20mm and 80g of fresh cross-sections around it, with no oxide layer on the surface; (2) Crushing: In high manganese alloy steel Crush in the material bowl for 5 seconds; (3) Sieve: use 20-mesh and 80-mesh sample sieves to overlap and sieve, discard the samples on the 20-mesh sample sieve and the sample under the 80-mesh sample sieve, and obtain the intermediate sample with a particle size of 0.180-0.900mm. As the analysis sample, the oxygen content in vanadium aluminum alloy was determined by pulse-inert gas melting method.

[0030] The test of the above-mentioned Example 2 was repeated 9 times, and the results of the oxygen content are shown in Table 2.

[0031] Table 2 Example 2 Oxygen content / wt%

[0032]

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Abstract

The invention relates to a preparing method of vanadium-aluminum alloy oxygen content determination samples, and belongs to the technical field of metallurgical detection. The preparing method of the vanadium-aluminum alloy oxygen content determination samples comprises following steps: firstly, rough shattering, wherein a vanadium-aluminum alloy is roughly shattered to 5 mm to 20 mm, and 80 g to 100 g of a block sample with the periphery as the fresh section and the surface free of an oxide layer is selected; secondly, smashing, wherein smashing is carried out for 5 s to 10 s; thirdly, screening, wherein overlapped screening is carried out through sample screens of 20 meshes and 80 meshes, samples between the 20-mesh sample screen and the 80-mesh sample screen are abandoned, and the samples ranging from 0.180 mm to 0.900 mm are taken as analysis samples. According to the method, sample oxidation is avoided, uniformity of the analysis samples is ensured, the prepared samples have the beneficial effects of being representative, convenient to prepare, high in oxygen and nitrogen analysis precision, and good in repeatability and reproducibility, and the analysis requirement of a pulse-inert gas melting method for measuring the vanadium-aluminum alloy is completely met.

Description

technical field [0001] The invention relates to a method for preparing a vanadium-aluminum alloy oxygen content measurement sample, and belongs to the technical field of metallurgical detection. Background technique [0002] Vanadium-aluminum alloys are used as master alloys for smelting titanium alloys, high-temperature alloys, and element additives for some special alloys. The oxygen content and nitrogen content of vanadium-aluminum alloys directly affect product performance. It is very important to control the oxygen and nitrogen content in the alloy. At present, the determination of oxygen and nitrogen in metals such as steel and high-temperature alloys is simple, fast, and sensitive with the pulse-inert gas melting method. Oxygen and nitrogen can be determined separately or simultaneously, and are widely used in metallurgical analysis. [0003] Most of the oxygen in vanadium-aluminum alloy is in the form of oxide, while a small amount exists in the form of solid solutio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/04G01N1/28
CPCB22F9/04G01N1/286
Inventor 杨新能冯宗平李小青羊绍松
Owner PANGANG GRP PANZHIHUA STEEL & VANADIUM
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