Large-scale press-fit explosive column temperature cycle threshold detecting device and method

Abstract

The invention discloses a large-scale press-fit explosive column temperature cycle threshold detecting device and method. The detecting device comprises sample cages and a temperature cycling environment test box. Each sample cage consists of a glass tube, a connecting button, a sample cover, a base, and the like. One sample cage loaded with an explosive column with the size of phi 60nm to 84nm and silicone oil is placed in the temperature cycling test box; and the sample cage is taken out after one cycling and then detection is performed. The explosive column irreversible volume expansivity is larger than or equal to 1% or the cycling number of the crack occurrence in the explosive column is reduced by one to obtain a temperature cycle threshold of the explosive column. According to the invention, the explosive column is in a restrained state being consistent with the actual charge state; and the test result can reflect the actual survivability of the charge.

Description

technical field [0001] The present invention belongs to the research field of explosive safety evaluation method, and mainly relates to the temperature environment adaptability of explosive charges, especially when the press-packed explosive column is temporarily stored in a battlefield, its survivability in a large temperature difference environment is determined to ensure its survival in the field. After temporary storage in the field, it still has good safety in use. Background technique [0002] In recent decades, the United States and some other countries have experienced many accidents in the process of storing, transporting and using ammunition. For example, the explosion accidents on the USS "Enterprise" and "Ford" aircraft carriers; some countries used B explosive-loaded shells, and bombing accidents occurred when they were launched. Therefore, Western countries pay special attention to the safety and survivability of ammunition. [0003] Explosive safety evaluati...

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Problems solved by technology

[0014] (2) After the temperature rises, the mechanical strength of the particles of energetic components such as Hessogen decreases, and they are more likely to be plastically deformed;

[0023] (4) The obtained sample temperature cycle threshold cannot truly reflect the viability and safety of the explosive column;

[0024] (5) Since the role of the plastic phase in the explosive column cannot be reflected, it is easy to misjudgment when using the unconstrained method to screen explosive columns with different formulations or production processes

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