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Device and method for testing weak shock ignition threshold of explosives
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A test method and a test device technology, which are applied in the field of explosive performance parameter experiments, can solve problems such as the inability to obtain the critical ignition pressure of the booster charge, the lack of exact data on the critical ignition pressure, and the lack of critical ignition criteria for the booster charge.
Active Publication Date: 2020-05-05
XIAN MODERN CHEM RES INST
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Problems solved by technology
[0003] (1) The critical ignition pressure of the booster cannot be obtained;
[0004] (2) Lack of critical ignition criteria for boosters
[0005] The booster charge is a relatively sensitive part of the ammunition system, and its safety is particularly important. The current test method can only give the critical pressure or the thickness of the critical diaphragm that causes the explosion of the booster, and there is no definite definition for the more dangerous critical ignition pressure. data, it is necessary to design a new type of test device and test method to accurately measure the critical ignition pressure of booster explosives under the action of shock waves
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Embodiment 1
[0026] Design the processing test device, carry out the impact ignition test, collect the explosive residue, judge the reaction form, and measure the critical ignition pressure of JH-14 booster.
[0027] The device includes a base 1, a cover plate 2, a fired shell 3, a main fired shell 4, a nut 5, a washer 6, a screw 7, a partition 8, a detonator seat 9, a main explosive 10, a fired explosive 11 and a detonator 12 , the overall design of the device is a flat coaxial structure, the base 1 is square, the height of the ring boss structure on its upper surface is 23mm, the ring boss separates the upper surface of the base 1, and on the base 1 A cylindrical groove is formed on the surface, and the diameter of the cylindrical groove is 67 mm. A U-shaped groove is respectively provided at the four corners of the base 1. The central axis of the U-shaped groove and the edge where it is located Vertical, the material of the base 1 is No. 20 mild steel, the cover plate 2 is a flat plate ...
Embodiment 2
[0036] Design processing test device, carry out impact ignition test, collect explosive residues, judge reaction form, measure A-IX-I (Type II Type 2 RDX 95%, mixed desensitizer 5%), press-fit, density 1.65g· cm -3 The critical ignition pressure of the booster charge.
[0037] The device includes a base 1, a cover plate 2, a fired shell 3, a main fired shell 4, a nut 5, a washer 6, a screw 7, a partition 8, a detonator seat 9, a main explosive 10, a fired explosive 11 and a detonator 12 , the overall design of the device is a flat coaxial structure, the base 1 is square, the height of the ring boss structure on its upper surface is 23mm, the ring boss separates the upper surface of the base 1, and on the base 1 A cylindrical groove is formed on the surface, and the diameter of the cylindrical groove is 67 mm. A U-shaped groove is respectively provided at the four corners of the base 1. The central axis of the U-shaped groove and the edge where it is located Vertical, the mat...
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Abstract
The invention discloses an explosive weak shock ignition threshold test device, and a method. The explosive weak shock ignition threshold test device and the method are capable of solving a problem inthe prior art that no reliable test device and experiment method are invented for measuring of explosive weak shock ignition threshold. The basic principles are that: detonation wave generated by detonation of an initiating explosive is damped after passing through a separating plate, and then is applied onto a secondary explosive to induce the reaction of the secondary explosive; and the reaction form of the secondary explosive is determined based on the depth of an explosion hole formed on a pedestal, and the deformation of a secondary explosive shell. The explosive weak shock ignition threshold test device is simple in structure; the method is feasible, and is high in efficiency; unreacted explosive particles can be collected effectively; the reaction form of the secondary explosive can be determined based on quantification data and phenomenon. The explosive weak shock ignition threshold test device and the method are high in versatility, and accuracy, and low in cost, and are capable of providing development of novel secondary explosive with technical support.
Description
technical field [0001] This application belongs to the technical field of explosive performance parameter experiments, and relates to a weak shock ignition threshold test device and method for explosives, which is mainly used to measure the critical pressure for ignition of booster charges under the action of shock waves, and to provide technical support for the development of new booster charges . Background technique [0002] The research on shock initiation of non-ideal explosives includes two aspects. For the purpose of reliable use, researchers hope to obtain the lowest shock wave pressure for reliable detonation of booster explosives, that is, the critical initiation pressure. For safety considerations, researchers hope to know The minimum pressure for accidental ignition of explosives is the critical ignition pressure. Obviously, the latter value is lower than or equal to the former. At present, our country has established the SSGT test method for booster explosive s...
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