Explosive special for explosive welding, and manufacturing method thereof

An explosive welding and explosive technology, applied in explosives, explosives processing equipment, offensive equipment and other directions, can solve the problems of explosive agglomeration, high mechanical sensitivity, environmental pollution, etc., achieve good explosive performance and safety performance, improve mixing uniformity, A wide range of raw materials

Active Publication Date: 2018-03-13
FUJIAN HAIXIA TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 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 process is highly dangerous, and at the same time, the explosive produces a large amount of harmful exhaust gas during the explosion process, polluting the environment; one is to add a diluent to the expanded ammonium nitrate explosive or powdery emulsion explosive, such as adding perlite, hollow glass microspheres, salt and other particles to reduce the detonation velocity. The patent application number 200810230535.2 discloses a special explosive for explosive welding of precious metal composite materials and its manufacturing

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  • Explosive special for explosive welding, and manufacturing method thereof

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Embodiment 1

[0035] A special explosive for explosive welding, comprising the following raw materials in parts by weight: 75 parts of ammonium nitrate, 10 parts of diluent, 3 parts of biological composite oil phase, and 3 parts of dispersant; the diluent is dipotassium hydrogen phosphate, and the dispersant It is corn stalk powder, and the moisture content of corn stalk powder is ≤0.5%.

[0036] Such as figure 1 Shown, the present invention also provides a kind of manufacture method of above-mentioned explosive welding special explosive, comprises the steps:

[0037] Step 1. Take 75kg of ammonium nitrate and add it to dissolve in water to prepare a mass fraction of 92.5% ammonium nitrate aqueous phase solution. Take 10 kg of dipotassium hydrogen phosphate and add it to the ammonium nitrate aqueous phase solution at 120° C. Heating under conditions, stirring for 5min;

[0038]Step 2. Weigh 3kg of biocomposite oil phase and ammonium nitrate aqueous phase solution obtained in step 1 to filt...

Embodiment 2

[0041] A special explosive for explosive welding, comprising the following raw materials in parts by weight: 80 parts of ammonium nitrate, 15 parts of diluent, 4 parts of biological composite oil phase, and 4 parts of dispersant; the diluent is potassium phosphate, and the dispersant is rice Straw powder, the moisture content of rice straw powder is ≤0.5%.

[0042] The present invention also provides a method for manufacturing the above-mentioned special explosive for explosive welding, comprising the following steps:

[0043] Step 1. Take 80kg of ammonium nitrate and add it to dissolve in water to form an aqueous ammonium nitrate solution with a mass fraction of 92.7%. Take 15kg of potassium phosphate with a particle size of 70 mesh and add it to the aqueous ammonium nitrate solution at 125°C. Heat and stir for 12 minutes;

[0044] Step 2, take 4kg biological composite oil phase and step 1 obtained ammonium nitrate aqueous phase solution to filter through the filter respecti...

Embodiment 3

[0047] A special explosive for explosive welding, comprising the following raw materials in parts by weight: 85 parts of ammonium nitrate, 20 parts of diluent, 5 parts of biological composite oil phase, and 5 parts of dispersant; the diluent is superphosphate, and the dispersant is Wheat straw powder, the moisture content of the wheat straw powder is ≤0.5%.

[0048] The present invention also provides a method for manufacturing the above-mentioned special explosive for explosive welding, comprising the following steps:

[0049] Step 1. Take 85kg of ammonium nitrate and add it to dissolve in water to form a 93.0% ammonium nitrate aqueous solution. Take 20kg of 80 mesh superphosphate and add it to the ammonium nitrate aqueous solution at 130°C. Under heating, stir for 10min;

[0050] Step 2. Weigh 5kg of biocomposite oil phase and ammonium nitrate aqueous phase solution obtained in step 1 to filter through the filter respectively. The biocomposite oil phase includes waste oil, ...

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Abstract

The invention relates to explosive and a manufacturing method thereof, in particular to explosive special for explosive welding, and a manufacturing method thereof. The explosive comprises the following raw materials in parts by weight: 75 to 85 parts of ammonium nitrate, 10 to 20 parts of diluent, 3 to 5 parts of biological composite oil phase and 3 to 5 parts of dispersing agent, wherein the diluent is formed by combining one or more of dipotassium phosphate, potassium phosphate, calcium superphosphate, potassium chloride and ammonium sulfate. Mixing is conducted and then expansion is conducted, the ammonium nitrate aqueous phase solution, the biological composite oil phase and the diluent are mixed, the diluent is attached to the internal parts and the surfaces of the ammonium nitrate granules after expansion, the prepared explosive has small water content, the detonation velocity is 1800 to 2600 m/s, the explosive violence is 8 to 10 mm, the gap distance of sympathetic detonation is more than or equal to 4 cm, and the compound rate reaches to 100 percent through explosive compound test and ultrasonic flaw detectionafter explosion of different metal stainless steel and carbon steel, copper and copper alloy as well as titanium and titanium alloy.

Description

technical field [0001] The invention relates to an explosive and a manufacturing method thereof, in particular to a special explosive for explosive welding and a manufacturing method thereof. 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] Due to the special requirements of explosive welding technology, the detonation velocity of the explosive used for explosive welding must be controlled within the range of 1300m / s to 2800m / s in order to achieve bette...

Claims

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Application Information

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IPC IPC(8): C06B31/28C06B21/00
CPCC06B21/00C06B31/285
Inventor 颜建议叶志文苏明阳陈协成邓芳利连清滨
Owner FUJIAN HAIXIA TECH
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