CN102507654A - Method for checking magnetic impurities in powder material - Google Patents

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

A kind of method of checking the magnetic impurity in the powder body material

[technical field]

The present invention relates to a kind of method of checking the magnetic impurity in the powder body material.

[background technology]

Manufacture of materials and use producer all adopt chemico-analytic method to detect to metallic element basically at present.The instrument investment cost of this method is big, and detection time is long, and when metal element content is low, then is difficult to detect, and lacks practicality.

[summary of the invention]

The objective of the invention is to overcome the weak point of prior art; A kind of simple and easy to do physical method is provided; Check out to quicklook the ferromagnetism impurity in the powder body material; Thereby the effectively accurate article article grade of assessing before product uses, the method for the magnetic impurity in the check powder body material of the use defective of avoiding causing because of ferromagnetism impurity.

The objective of the invention is to realize like this:

1, a kind of method of checking the magnetic impurity in the powder body material is characterized in that step is following:

(1), sample weighing: take by weighing powder body material sample 300g to be measured;

(2), dissolving: add the 1500ml pure water, the powder body material sample is fully mixed with pure water;

(3), stir: little plastic-like bag on the bar magnet outerwrap of intensity greater than 2000 Gausses is placed in the above-mentioned bar magnet that is enclosed with little plastic-like bag in sample and the pure water mixed solution and fully contacts stirring;

(4), clean: bar magnet and little plastic-like bag are taken out simultaneously; In the large beaker that fills the 1000ml pure water, clean 2 times; And then bar magnet and little plastic-like bag put in the beaker that fills 500ml water; Take out bar magnet more separately, little plastic-like bag surface adsorption material is cleaned in beaker, take out little plastic-like bag then;

(5), the magnetic thing contains that there is something special and judges: move at the bottom of the beaker cup of 500ml water with bar magnet, can observe out quantity, size and the shape of magnetic thing in the cup.

Aforesaid a kind of method of checking the magnetic impurity in the powder body material is characterized in that above-mentioned stirring and cleaning step triplicate.

Advantage of the present invention has: only use laboratory balance commonly used in the testing process; Beaker, high strength magnet, article such as pure water; Whole testing process weak point consuming time; And can observe quantity, size and the shape of ferromagnetism impurity, to the source of ferromagnetism impurity judging and control measure provide accurate foundation, and can ferromagnetism impurity be screened from solution through this mode.And cost is low, and simple to operate should going detected, screening effect is directly perceived.

[embodiment]

A kind of method of checking the magnetic impurity in the powder body material, step is following:

(1), sample weighing: take by weighing powder body material sample 300g to be measured;

(2), dissolving: add the 1500ml pure water, the powder body material sample is fully mixed with pure water;

(3), stir: little plastic-like bag on the bar magnet outerwrap of high strength greater than 2000 Gausses is placed in the above-mentioned bar magnet that is enclosed with little plastic-like bag in sample and the pure water mixed solution and fully contacts stirring;

(4), clean: bar magnet and little plastic-like bag are taken out simultaneously; In the large beaker that fills the 1000ml pure water, clean 2 times, and then bar magnet and little plastic-like bag are put in the beaker that fills 500ml water, take out bar magnet more separately; Little plastic-like bag surface adsorption material is cleaned in beaker; Take out little plastic-like bag then, the ferromagnetism impurity that is adsorbed on this moment on the sample bag will break away from because of the absorption nature that loses magnetism

(5), the magnetic thing contains that there is something special and judges: move at the bottom of the beaker cup of 500ml water with bar magnet, can observe out quantity, size and the shape of magnetic thing in the cup.

Look the content of ferromagnetism impurity in the powder body material,, can effectively reject the ferromagnetism impurity that contains in the powder body material with above-mentioned stirring and cleaning step triplicate or more than three times.

Claims (2)

1. method of checking the magnetic impurity in the powder body material is characterized in that step is following:

(1), sample weighing: take by weighing powder body material sample 300g to be measured;

(2), dissolving: add the 1500ml pure water, the powder body material sample is fully mixed with pure water;

(3), stir: little plastic-like bag on the bar magnet outerwrap of intensity greater than 2000 Gausses is placed in the above-mentioned bar magnet that is enclosed with little plastic-like bag in sample and the pure water mixed solution and fully contacts stirring;

(4), clean: bar magnet and little plastic-like bag are taken out simultaneously; In the large beaker that fills the 1000ml pure water, clean 2 times; And then bar magnet and little plastic-like bag put in the beaker that fills 500ml water; Take out bar magnet more separately, little plastic-like bag surface adsorption material is cleaned in beaker, take out little plastic-like bag then;

(5), the magnetic thing contains that there is something special and judges: move at the bottom of the beaker cup of 500ml water with bar magnet, can observe out quantity, size and the shape of magnetic thing in the cup.

2. a kind of method of checking the magnetic impurity in the powder body material according to claim 1 is characterized in that above-mentioned stirring and cleaning step triplicate.