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Special low-detonation velocity explosive for explosive welding

A low-explosive-velocity explosive and explosive welding technology is applied in the field of explosives to achieve the effects of stable detonation, good dispersion and moderate density.

Inactive Publication Date: 2014-10-01
HUBEI JINLAN SPECIAL METAL MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] According to the search, there is no patent application identical to the present invention in China

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1, the special low detonation velocity explosive of explosive welding of detonation velocity 2150m / s, intensity 7cm, martyrdom distance 3cm, and preparation method thereof:

[0017] Take 160kg of No. 2 powdery emulsion explosive in bulk, take 60kg of granular calcium carbonate with a fineness of 80 mesh, and mix them evenly to obtain a detonation velocity of 2150m / s, a violent force of 7cm, and a detonation distance of 3cm. , Density 0.84g / cm3 special low detonation velocity powder emulsion explosive for explosive welding.

[0018] The explosive is used for explosive welding of 4mm thick S316L stainless steel plate and 16mm thick Q345 carbon steel plate to produce (S316L+Q345) 4 / 16×1800×4500mm metal composite plate, and the composite effect is good after ultrasonic flaw detection.

Embodiment 2

[0019] Embodiment 2, the special low-detonation-velocity explosive of explosive welding of detonation velocity 2200m / s, intensity 8.2cm, martyrdom distance 4cm, and preparation method thereof:

[0020] Take 160kg of bulk No. 2 powdery emulsion explosive, take 55kg of granular calcium carbonate with a fineness of 100 mesh, the moisture content of the calcium carbonate particles is not higher than 0.5wt%, and mix evenly to obtain a detonation velocity of 2200m / s, a violent force of 8.2cm, and a detonation distance of 2200m / s. 4cm, density 0.78g / cm3 special low detonation velocity powder emulsion explosive for explosive welding.

[0021] The explosive is used for explosive welding of 3mm thick TA1 pure titanium plate and 20mm thick Q345R carbon steel plate to produce (TA1+Q345R) 3 / 20×2150×5130mm metal composite plate, and the composite effect is good after ultrasonic flaw detection.

Embodiment 3

[0022] Embodiment 3, the special low detonation velocity explosive of explosive welding of detonation velocity 2050m / s, intensity 7cm, martyrdom distance 4cm, and preparation method thereof:

[0023] Take 200kg of bulk No. 2 powdery emulsion explosive, take 85kg of granular calcium carbonate with a fineness of 100 mesh, the moisture content of the calcium carbonate particles is not higher than 0.5wt%, and mix evenly to obtain a detonation velocity of 2050m / s, a violent force of 7cm, and a detonation distance of 4cm , Density 0.82g / cm3 special low detonation velocity powder emulsion explosive for explosive welding.

[0024] The explosive is used for explosive welding of Φ2150×8mm iron-nickel copper Bfe30 and Φ2150×70mm carbon steel pipe Q345R to produce (Bfe30+Q345R) 8 / 70×Φ2150 metal composite tube sheet. The composite effect is good after ultrasonic flaw detection.

[0025] Prove by embodiment 1-3, prepare according to the special low detonation velocity explosive technical sc...

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Abstract

The invention relates to a special low-detonation velocity explosive for explosive welding, and the special low-detonation velocity explosive comprises the following components in percentage by weight: 55-65% of powdery emulsion explosive, and 34-45% of calcium carbonate particles; the powdery emulsion explosive is no.2 powdery emulsion explosive; the fineness of the calcium carbonate particles is 80-120meshes; the moisture of the calcium carbonate particles is not higher than 0.5wt%; the 55-65% of powdery emulsion explosive and 34-45% of calcium carbonate particles are evenly mixed. By adding and evenly mixing the powdery emulsion explosive with calcium carbonate particles, the explosive is higher in explosive grading, stable to detonate, within the range of explosion combination expection for the explosive velocity, easy to produce, uniform in mixing of all components, good in flow property, moderate in density, convenient to store and transport, and capable of meeting the demands of various metal composite materials on explosive welding technology. The special low-detonation velocity explosive can be widely popularized and applied to all explosive welding production enterprises.

Description

technical field [0001] The invention relates to the technical field of explosives, in particular to low-detonation-velocity explosives for explosive welding. Background technique [0002] Explosion welding is commonly used for welding between dissimilar metals. Explosive welding uses the energy of explosives to weld two or more metal materials together to form a composite material by achieving high-speed oblique collision under the action of detonation waves. Metal composite panels obtained by explosive welding can replace expensive stainless steel and non-ferrous precious metals, and are widely used in many fields such as national defense, aviation, aerospace, petroleum, chemical industry, and machinery manufacturing. [0003] Currently, the low detonation velocity explosives used in the market can be roughly divided into two types: one is single substance high explosives plus diluent, and the high explosives used are military high explosives such as TNT and RDX. The proc...

Claims

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Application Information

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IPC IPC(8): C06B23/00
Inventor 王雄阚立贵铀铀
Owner HUBEI JINLAN SPECIAL METAL MATERIAL
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