Method for measuring reaction completeness of powdered aluminium during aluminized explosive explosion process

A technology with complete reaction and measurement method, applied in the direction of material explosiveness, etc., can solve the problems of high test cost, no time scale for measurement results, and inability to characterize the reaction process of aluminum powder in aluminum-containing explosives, so as to achieve the effect of rapid measurement process measurement.

Inactive Publication Date: 2014-12-24
XIAN MODERN CHEM RES INST
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Problems solved by technology

In order to ensure the accuracy of the measurement results, the high-precision thermometer used in the detonation heat test requires a test time of several hours, and its measurement results are static values. This device cannot characterize the reaction process of aluminum powder in aluminum-containing explosives, and its measurement results are not accurate. with a time scale
[0004] (2) The cylinder test mainly obtains parameters such as the specifi...

Method used

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  • Method for measuring reaction completeness of powdered aluminium during aluminized explosive explosion process
  • Method for measuring reaction completeness of powdered aluminium during aluminized explosive explosion process
  • Method for measuring reaction completeness of powdered aluminium during aluminized explosive explosion process

Examples

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Embodiment 1

[0036] Following the technical scheme of the present invention, the closed explosive in this embodiment is a steel cylindrical projectile, with a height of 400mm, an outer diameter of 270mm, an inner diameter of 188mm, a wall thickness of 41mm, and an internal volume of 5.8L, and the interior of the projectile is equipped with Lining protective layer. The test condition is vacuum, the size of the sample to be tested is Φ25mm*25g, the resistance of the detonator is 1.0Ω; the temperature sensor adopts high-pressure tungsten rhenium thermocouple, the sensitive surface is 4cm from the center of the sample to be tested, and the magnification is 100 times; the pressure sensor adopts The ultra-high temperature silicon piezoresistive sensor is 20cm away from the center of the sample to be tested. The charge amplifier adopts the YE3818 dynamic strain gauge. The test data is collected by GEN5i of HBM company, the collection frequency is 10K / s, and the collection period is 51s. The formu...

Embodiment 2

[0040] This example gives the same explosive formula as that of Example 1, and the measuring instruments and measuring methods used are exactly the same. The difference is that the aluminum powder used in the explosive formula of this example has different specifications. The sample 1 is 4μ, the sample 2 is 13μ, the sample 3 is 26μ, the sample 4 is a sheet, and the sample 8 is an inert material. The parameter curve of the explosion process is obtained, and the temperature and the converted temperature are collected and converted 1 second after the explosion. The pressure value is shown in Table 2.

[0041] Table 2 1 second measurement results of aluminum-containing explosives with different specifications of aluminum powder after explosion

[0042]

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Abstract

The invention discloses a method for measuring reaction completeness of powdered aluminium, and the method can solve the characterized problem of dynamic reaction completeness during an aluminized explosive explosion process. In the method, based on process measurement and combined with an airtight exploder, reacting conditions of powdered aluminium are comprehensively evaluated by measuring and recording temperature and pressure schedule curves during the aluminized explosive explosion process. In comparison with the traditional explosion heat measurement method, the method aims at reaction characteristics and dynamic characteristics of the powdered aluminium. Through the method, the reaction condition of the different-specification powdered aluminium in the phase-condensed aluminized explosive with the same ratio is evaluated along with time.

Description

Technical field [0001] The invention belongs to the technical field of explosives, and specifically relates to a measurement method for characterizing the completeness of aluminum powder reaction during the explosion of aluminum-containing explosives. The method can directly target the same formula but different aluminum powder scales during the explosion of aluminum-containing explosives. The completeness of the reaction is characterized in real time. Background technique [0002] A lot of practice has shown that the actual energy released by aluminum-containing explosives in the explosion process is much lower than its design value, and with the continuous increase of the ratio of aluminum powder to explosives, this problem has become increasingly prominent. Analysis shows that this is mainly caused by aluminum-containing explosives. The incomplete reaction of aluminum powder in explosives is caused by the non-ideal detonation characteristics of aluminum-containing explosives. ...

Claims

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Application Information

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IPC IPC(8): G01N25/54
Inventor 田轩王晓峰冯晓军徐洪涛黄亚峰封雪松赵娟冯博
Owner XIAN MODERN CHEM RES INST
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