Method for checking magnetic impurities in powder material

A technology for powder materials and magnetic impurities, which is applied in the direction of analyzing materials, chemical instruments and methods, and material analysis through electromagnetic means. Short, intuitive screening effect, low cost effect

Inactive Publication Date: 2012-06-20
ZHUHAI CAIZHU IND
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  • Application Information

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Problems solved by technology

This method requires a large investment in equipment, a long detection time, and it is d

Method used

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Embodiment Construction

[0013] A method for inspecting magnetic impurities in powder materials, the steps are as follows:

[0014] (1), sample weighing: weigh 300g of the powder material sample to be tested;

[0015] (2), Dissolving: Add 1500ml of pure water to fully mix the powder material sample with pure water;

[0016] (3) Agitation: Wrap a small plastic sample bag on a magnetic rod with a high strength greater than 2000 Gauss, put the above-mentioned magnetic rod wrapped with a small plastic sample bag into the mixed solution of the sample and pure water to fully contact and stir;

[0017] (4) Cleaning: Take out the magnetic rod and the small plastic sample bag at the same time, wash them twice in a large beaker filled with 1000ml pure water, and then put the magnetic rod and small plastic sample bag into the beaker filled with 500ml water In the process, take out the magnetic bar separately, wash the adsorbed substances on the surface of the small plastic sample bag in a beaker, and then take ...

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Abstract

The invention discloses a method for checking magnetic impurities in a powder material. The method comprises the following steps of: (1) weighing a sample, namely weighing 300 grams of the powder material to be tested; (2) dissolving, namely fully mixing 1,500 milliliters of pure water and the powder material sample; (3) stirring, namely packaging a small plastic sample bag outside a magnetic bar of which the strength is more than 2,000 Gaussian, putting into the sample and pure water mixed solution, and fully contacting and stirring; (4) washing, namely simultaneously taking out the magnetic bar and the small plastic sample bag, washing in a large beaker with 1,000 milliliters of pure water twice, then putting into a beaker with 500 milliliters of water, independently taking out the magnetic bar, washing substances adsorbed on the surface of the small plastic sample bag in the beaker, and taking out the small plastic sample bag; and (5) judging the content of magnetic substances, namely moving the magnetic bar at the bottom of the beaker with 500 milliliters of water to observe the number, the sizes and the shapes of the magnetic substances in the beaker. The method has the advantages that: the whole detection process is low in time consumption, and low in cost; the operation is simple and feasible; and a detection and screening effect is intuitive.

Description

【Technical field】 [0001] The invention relates to a method for inspecting magnetic impurities in powder materials. 【Background technique】 [0002] At present, manufacturers of materials and users basically use chemical analysis methods to detect metal elements. This method requires a large investment in equipment, a long detection time, and it is difficult to detect when the content of metal elements is low, which lacks practicability. 【Content of invention】 [0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a simple and easy physical method to quickly and intuitively detect the ferromagnetic impurities in the powder material, thereby effectively and accurately evaluating the product grade before the product is used. A method for inspecting magnetic impurities in powder materials that avoids use defects caused by ferromagnetic impurities. [0004] The purpose of the present invention is achieved like this: [0005]...

Claims

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Application Information

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IPC IPC(8): G01N27/00B03C1/02
Inventor 时东霞
Owner ZHUHAI CAIZHU IND
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