Pyrotechnic composition for pyrotechnic cutting device and manufacturing method and application of pyrotechnic composition

A technology of cutting device and pyrotechnic powder, which is applied in the field of weapons and ammunition, can solve the problems of more slag hanging, more drug delay, and low combustion heat of pyrotechnic powder, etc., and achieves the effects of good cutting performance, improved cutting ability and low mechanical sensitivity.

Active Publication Date: 2021-05-28
河南中南工业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] There are very few domestic studies on pyrotechnic cutting technology, and the literature (Wang Peng, Zhang Jing. Thermodynamic analysis of pyrotechnic cutting and drug formulation design and experiment [J]. Energetic Materials, 2011,19(04):459-463.) reported A kind of pyrotechnic agent used for melting metal materials at high temperature, but the agent has more delays in cutting and more dross, which affects its cutting effect. The best pyrotechnic agent formula can only melt through 3.5mm thick steel plates
[0008] Therefore, it is necessary to design the existing pyrotechnic powder components to solve the problems of low combustion heat and poor cutting performance of the pyrotechnic powder used in the pyrotechnic cutting device in the prior art

Method used

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  • Pyrotechnic composition for pyrotechnic cutting device and manufacturing method and application of pyrotechnic composition

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Embodiment 1

[0048] A kind of pyrotechnic powder for pyrotechnic cutting device, which is composed of main material and binder accounting for 4% by weight of the main material, wherein, the mass percentage of each component of the main material is: iron oxide 20%, copper oxide 30%, high Potassium chlorate 20%, aluminum-magnesium alloy powder 12%, tungsten powder (average particle size 1~4μm) 18%, binder is fluorine rubber.

[0049] The manufacturing method of the pyrotechnic powder for the pyrotechnic cutting device comprises the following steps:

[0050] (1) Dry blending: Weigh the raw materials according to the mass percentage of each component in the main pyrotechnic composition, manually pass through a sieve with an aperture of 0.45 mm, and sieve and mix for 3 to 5 times until the color of the raw materials is uniform;

[0051] (2) Wet mixing: add 80g of fluororubber acetone solution per 1kg of pyrotechnic powder (the mass fraction of fluororubber acetone solution is 40%), and add the ...

Embodiment 2

[0061] A kind of pyrotechnic powder for pyrotechnic cutting device, which is composed of main material and binder accounting for 5% by weight of the main material, wherein, the mass percentage of each component of the main material is: iron oxide 15%, copper oxide 30%, high Potassium chlorate 25%, aluminum-magnesium alloy powder 10%, tungsten powder (average particle size 1-4μm) 20%, binder is fluororubber.

[0062] The manufacturing method of the pyrotechnic powder for the pyrotechnic cutting device comprises the following steps:

[0063] (1) Dry blending: Weigh the raw materials according to the mass percentage of each component in the main pyrotechnic composition, pass through a sieve with an aperture of 0.45 mm through a screening device, and sieve and mix for 3 to 5 times until the color of the medicinal raw materials is uniform;

[0064] (2) Wet mixing: Add 60g of fluororubber acetone solution (the mass fraction of fluororubber acetone solution is 30% per 1kg of pyrotech...

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Abstract

The invention belongs to the technical field of weapon ammunition, and particularly relates to pyrotechnic composition for a pyrotechnic cutting device and a manufacturing method and application of the pyrotechnic composition. According to the pyrotechnic composition for the pyrotechnic cutting device, the tungsten powder is added into the formula, so that the cutting capacity can be greatly improved; potassium perchlorate is added into the formula, the heat of the pyrotechnic composition is increased, the cutting capacity is further improved, compared with an existing pyrotechnic cutting composition, tungsten powder is added into the formula to serve as an additive, the cutting capacity is greatly improved, the pyrotechnic composition for the pyrotechnic cutting device is placed on the matched pyrotechnic cutting device, and the cutting efficiency is greatly improved within 2-5 s. The steel plate with the thickness of 22 mm or the round steel with the diameter of 20 mm can be cut, and good cutting performance is achieved. The pyrotechnic composition is low in mechanical sensitivity, easy to manufacture and suitable for the fields of ammunition destruction, sea rescue, earthquake collapse rescue, sunken ship cutting and the like.

Description

technical field [0001] The invention belongs to the technical field of weapons and ammunition, and in particular relates to a pyrotechnic powder for a pyrotechnic cutting device and its manufacturing method and application. The pyrotechnic powder is suitable for ammunition destruction, sea rescue, earthquake landslide rescue, shipwreck cutting and other fields. Background technique [0002] Pyrotechnic cutting is a process that uses high-temperature molten metal jets generated by pyrotechnic powder combustion to cut metal materials, so as to achieve rapid cutting of metal materials without external energy sources. The cutting process is actually high temperature, high speed, active The convective heat transfer process of phase change, the convective heat transfer process follows Newton's cooling formula. [0003] Pyrotechnic cutting technology can be used for emergency rescue, especially in disasters such as earthquakes and landslides. Under the condition of no external powe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B33/06C06B23/00B23K31/10
CPCC06B33/06C06B23/001C06B23/00B23K31/10
Inventor 郭庆国张显文穆营洲郭十奇宁军垒王云鹏师后雨刘荣博叶斐秦莉
Owner 河南中南工业有限责任公司
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