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Liquid buoyancy weighing method for determination of aluminum and iron content in steel grit aluminum

A steel sand aluminum, weighing method technology, applied in the direction of weighing by removing certain components, material analysis by measuring buoyancy, measuring devices, etc., to achieve the effect of improved reliability and good repeatability

Inactive Publication Date: 2012-10-17
HBIS COMPANY LIMITED HANDAN BRANCH COMPANY
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Problems solved by technology

However, in the process of alloy determination, such as the determination conditions of the weight of the sample itself, the suspension weight, the volume of the sample and the true density of the sample calculated from it, and the calculation method of the component content of the sample become the implementation of the hydrostatic weighing method to determine the steel. Bottleneck in the application of aluminum and iron content methods in sand aluminum

Method used

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  • Liquid buoyancy weighing method for determination of aluminum and iron content in steel grit aluminum
  • Liquid buoyancy weighing method for determination of aluminum and iron content in steel grit aluminum
  • Liquid buoyancy weighing method for determination of aluminum and iron content in steel grit aluminum

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Embodiment

[0038] Embodiment: The process of the method for measuring the content of aluminum and iron in steel sand aluminum by this liquid buoyancy weighing method is as follows.

[0039] (1) Prepare steel sand aluminum samples according to Φ(25-45)mm×(25-70)mm.

[0040] (2) Select 4 representative samples, clean the surface of the samples, and mark them with a marker (1#; 2#; 3#; 4#). Weigh them separately and place them in a blast drying oven capable of precise temperature control. Put the samples into the drying oven and dry them at 105-110°C to constant weight. After drying for 15 minutes, take them out of the drying oven and place them in the drying oven. Cool naturally in the container to room temperature, weigh with a balance with a sensitivity d≤0.01g and a capacity ≥200g, and repeat the drying and weighing steps until the difference between the last two weighings does not exceed 0.1%. The measured value of the sample is m 1 (1#: 135.204g; 2#: 134.205g; 3#: 137.229g; 4#: 129....

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Abstract

The invention discloses a liquid buoyancy weighing method for determination of aluminum and iron content in steel grit aluminum. The method comprises the following steps: (1) preparing a steel grit aluminum sample, then fully drying and accurately weighing a weight m1 of the sample; (2) placing the weighed sample in an immersion liquid groove, then placing the immersion liquid groove in a vacuumizing device; vacuumizing till an internal pressure in the vacuumizing device no more than 2500Pa and maintaining for 5-10min; (3) slowly injecting water into the immersion liquid groove until the immersion liquid covering the sample, and maintaining pressure in the vacuumizing no more than 2500Pa for 5-10min; (4) removing the immersion liquid groove from the vacuumizing device, standing the immersion liquid groove in the air to completely infiltrate and saturate the sample; and then weighing a suspended weight of the sample; (5) calculating density of the sample; and (6) calculating aluminum content and iron content in the sample. The method for the determination of aluminum and iron content in the steel grit aluminum can effectively avoid influences from the structure and shape of the steel grit aluminum, so as to significantly improve accuracy and reliability of analysis data, and realize good reproducibility.

Description

technical field [0001] The invention relates to a method for measuring alloy content, in particular to a method for measuring the content of aluminum and iron in steel sand aluminum by liquid buoyancy weighing method. Background technique [0002] In order to meet the steel performance requirements of the steel industry and automobile manufacturing industry, it is necessary to add alloy elements such as steel sand and aluminum for microalloying treatment in the steelmaking process to improve the crystal structure of steel and improve the mechanical and physical properties of the material. Therefore, no matter in the quality control of aluminum alloy procurement or in the guidance of steelmaking process operation, steel production enterprises need to carry out laboratory analysis on the chemical composition of steel sand aluminum alloy. Using traditional wet chemical analysis to determine the content of aluminum and iron in the alloy of steel grit aluminum alloy, the operatio...

Claims

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Application Information

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IPC IPC(8): G01N9/08G01N9/36G01N5/04
Inventor 尹艳清李兰群连秀敏左丽峰李琳王自学马永昌殷雪霞张彬
Owner HBIS COMPANY LIMITED HANDAN BRANCH COMPANY
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