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An explosive critical diameter testing device and testing method thereof

A critical diameter and testing device technology, which is applied in the field of explosive detonation and explosive performance testing, can solve the problems of complex testing process, difficult testing of small critical diameter, and large amount of drug, and achieve the effect of simple and convenient operation process

Active Publication Date: 2020-04-14
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical solution of the present invention is to solve the problems of large dosage, complicated testing process and difficulty in testing small critical diameters in the testing of critical diameter of explosives, and proposes a testing device for critical diameter of explosives and its testing method

Method used

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  • An explosive critical diameter testing device and testing method thereof
  • An explosive critical diameter testing device and testing method thereof
  • An explosive critical diameter testing device and testing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] A method for testing the critical diameter of explosives, the method steps are as follows:

[0034] (1) First put the HMX raw material, water and zirconia beads into a ball mill at a mass ratio of 1:10:20, where the zirconia beads have a diameter of 0.3 mm, a rotational speed of 300 r / min, and a ball milling time of 6 h. and dried to obtain a refined ball-milled HMX sample with a median diameter d 50 at 420 nm.

[0035] (2) The ball mill HMX is pressed and formed as the starting charge 5-7, the charge diameter is 3.5mm, the height is 3.38mm, and the charge density is 1.6761g / cm 3 , press the TATB explosive to be tested, the diameter of the powder column is 7.0mm, the height is 3.08mm, and the charge density is 1.7443g / cm 3 .

[0036] (3) Select an acceleration chamber with a central hole diameter of 3.8 mm, first pass four screws 5-13 through the lower splint 5-12, and then assemble the witness plate 5-11 and the restraint sleeve 5 on the lower splint 5-12 from botto...

Embodiment 2

[0047] The difference from Example 1 is that the sample to be tested in step 2 is FOX-7 explosive, the diameter of the grain is 7.0mm, the height is 3.08mm, and the charge density is 1.6974g / cm 3 ; In step 3, the diameters of the central hole of the acceleration bore are 0.8mm and 1.0mm respectively, and the experimental results are shown in Table 2.

[0048] Table 2 Experimental results of explosive critical diameter test

[0049]

[0050] It can be seen from Table 2 that the maximum flyer diameter for incomplete detonation and the minimum flyer diameter for complete detonation of the sample FOX-7 explosive are 0.8mm and 1.0mm respectively, and the average value of the two is 0.9mm as FOX-7. 7 Critical diameter of explosives.

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Abstract

The invention provides an explosive critical diameter testing device and a testing method thereof, wherein the testing device and the testing method belong to the technical field of explosive detonation and explosion performance testing. The explosive critical diameter testing device comprises an electric pulse output device, a digital high-pressure meter, a pulse converter, a testing bomb body, an explosion-proof box and a drawing fan. The explosive critical diameter testing device and the testing method have advantages of simple and convenient operation process, no requirement for other dynamic diagnosis equipment, low amount of required explosive sample amount (lower than 1g), etc. The critical diameter range of the explosive which can be tested by the method is 0.3-5.0mm. The explosivecritical diameter testing device and the testing method thereof are suitable for screening and performance of a new formula in an explosive development process.

Description

technical field [0001] The invention belongs to the technical field of explosive detonation and explosion performance testing, in particular to an explosive critical diameter testing device and a testing method thereof. Background technique [0002] Due to the lateral expansion phenomenon in the detonation of explosives, the energy density of the reaction zone decreases, the intensity of the detonation wave front decreases, and the severity of the explosive reaction decreases, which in turn reduces the propagation speed of the detonation wave. When the diameter of the grain decreases to a certain value, the energy in the detonation reaction zone is not enough to compensate for the side energy loss, and the explosive cannot reach the condition of stable detonation. The diameter of the charge at this time is called the critical diameter of the explosive. The critical diameter is the minimum charge diameter for the stable detonation of explosives. It is an important parameter t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B21/10G01N33/22G01N1/28
CPCG01B21/10G01N1/28G01N33/227
Inventor 李小东王新全王晶禹张锡铭宋昌贵杨武孙红燕田健安
Owner ZHONGBEI UNIV