Tungsten tin re selection test

Tungsten tin alloy is a commonly used high-temperature alloy, widely used in aerospace, power, chemical and other fields due to its excellent high-temperature performance and corrosion resistance. In the production process of tungsten tin alloy, the re selection test is a very important step, which can effectively improve the quality and yield of tungsten tin alloy. This article will introduce the operating steps and precautions of tungsten tin gravity separation test.

1、 Experimental principle

During the production process of tungsten tin alloy, some impurities and impure substances may be generated due to different sources of raw materials and production processes. The re selection experiment is to separate these impurities and impure substances from tungsten tin alloys through physical and chemical methods, thereby improving the quality and yield of tungsten tin alloys.

2、 Test steps

1. Sample preparation

Grind the tungsten tin alloy sample into powder with a particle size of less than 0.074mm.

2. Reselection test

Add the sample to the reselection machine for reselection testing. A gravity separator is a device that uses principles such as gravity, centrifugal force, and friction to separate substances of different densities. In the gravity separation test, the gravity, centrifugal force, friction force and other parameters need to be adjusted according to the density difference of the material, so that the material with different densities can be separated.

3. Re-selection concentration

Concentrate the substances separated by the gravity separator through gravity separation. Gravity concentration refers to the further concentration of separated substances through principles such as gravity and centrifugal force, in order to improve their purity and content.

4. Sintering

Sinter the concentrated substance. Sintering refers to heating a substance at high temperatures to make it dense and hard. During the sintering process, it is necessary to adjust the sintering temperature and time according to different substances to achieve the best sintering effect.

5. Testing

Test the sintered material for purity and content. If problems are found, it is necessary to conduct re selection experiments and re concentration until the required quality and content are achieved.

3、 Precautions

1. The preparation of samples should try to avoid contamination and use clean containers and tools.

During the re selection experiment, it is necessary to adjust parameters such as gravity, centrifugal force, and friction force according to different substances to achieve the best separation effect.

When re concentrating, it is necessary to pay attention to the concentration time and temperature to avoid excessive concentration or heating.

4. During sintering, it is necessary to adjust the sintering temperature and time according to different substances to achieve the best sintering effect.

5. During testing, it is necessary to use accurate and reliable testing methods to ensure the accuracy and reliability of the testing results.

In short, the tungsten tin re selection test is a very important step in the production process of tungsten tin alloys, which can effectively improve the quality and output of tungsten tin alloys. When conducting reselection experiments, attention should be paid to sample preparation, parameter adjustment of reselection experiments, reselection concentration and sintering operations, as well as the selection and use of detection methods. Only by doing these tasks well can the quality and output of tungsten tin alloy meet the requirements.