CN107721780A - Powdery explosive density regulator for explosive cladding and preparation method thereof - Google Patents

Abstract

The present invention discloses a density regulator for powdered explosives for explosive compounding, which is composed of one or more of the following mutually matching materials in parts by weight: 500-950 parts of perlite, 10-400 parts of carbon powder, 50-300 parts of aluminum powder, and 30-200 parts of talcum powder. The raw materials selected for the density regulator are all hydrophobic substances, which can effectively improve the flowability of explosives and greatly improve the moisture-proof performance of explosives. The present invention also discloses a preparation method for the density regulator for powdered explosives for explosive compounding, wherein one or more of perlite, carbon powder, aluminum powder, and talcum powder are put into a mixer by weight, and the mixture is mixed for 30-60 minutes before being packed into a bag. The process is simple, and the density regulator prepared by the method has stable quality, and can be used for adjusting the density, detonation velocity, and flowability of modified ammonium nitrate oil explosives and porous granular ammonium nitrate oil explosives.

Description

A powdery explosive density regulator for explosive compounding and its preparation method

technical field

The invention belongs to the field of metal composite material production technology, and relates to a powdery explosive for explosive compounding, in particular to a powdery explosive density regulator for explosive compounding, and to a preparation method for the powdery explosive density regulator for explosive compounding.

Background technique

In recent years, with the rapid development of my country's aerospace, shipbuilding heavy industry and automobiles, the demand for material performance in practical applications is also increasing. Layered metal composite materials are two or more metal materials , combined in a certain arrangement and compounded by a certain processing technology, and has excellent properties of various materials. The processing methods of layered metal composite materials mainly include explosive cladding method, rolling method, diffusion welding method, explosion + rolling cladding method, etc. Explosive cladding method has gained a lot of attention due to its simple operation process, low equipment investment and good composite effect. Recognized by experts, scholars and market customers. The preparation of layered metal composites by explosive compounding has special requirements on the performance of explosives, and low-detonation-velocity explosives with low density and low detonation velocity are generally used. In practical applications, adding wood flour and NaCl is generally used to reduce the density and detonation velocity of explosives, but this method will greatly reduce the moisture-proof performance of explosives.

Contents of the invention

The present invention solves the deficiencies of the prior art, provides a powdery explosive density regulator for explosive compounding, and solves the problem of low moisture-proof performance of powdery explosives for metal composite materials prepared by the existing explosive compounding method. The density regulator is selected from The raw materials are all hydrophobic substances, which can effectively improve the fluidity of explosives and greatly improve the moisture-proof performance of explosives.

The present invention also provides a preparation method of a powdery explosive density regulator for explosive compounding. The process method is simple, and the quality of the density regulator prepared by the method is stable, and can be used for modifying the density of ammonium oil explosives, porous granular ammonium oil explosives, Detonation velocity and fluidity adjustment.

The technical solution adopted in the present invention is: a powdery explosive density regulator for explosive compounding, the density regulator is composed of one or more intercombinations of perlite, carbon powder, aluminum powder and talcum powder.

Preferably, the density modifier is composed of one or more of the following intercomplexes in parts by weight: 500-950 parts of perlite, 10-400 parts of carbon powder, 50-300 parts of aluminum powder, and 30-200 parts of talc powder .

Preferably, the perlite is hydrophobic porous perlite with a particle size of 4-100 mesh.

Preferably, the carbon powder is crushed from industrial anthracite coal, and its particle size is 4-200 mesh.

Preferably, the particle size of the aluminum powder is 20-200 mesh.

Further preferably, the particle size of the talc powder is 4-200 mesh

Another technical scheme of the present invention is a preparation method of a powdery explosive density regulator for explosive compounding, in which one or more of perlite, carbon powder, aluminum powder, and talcum powder are put into a mixer by weight, Turn on the machine and mix for 30-60 minutes, then put it into a bag.

Compared with the prior art, the present invention has the beneficial effects of convenient material collection, simple process, stable quality and low cost, and can be used for density, detonation velocity and fluidity adjustment of modified ammonium oil explosives and porous granular ammonium oil explosives. The density regulator can effectively reduce the density and detonation velocity of explosives, and improve the fluidity of powdered explosives.

detailed description

The present invention will be described in detail below in combination with specific embodiments.

A powdered explosive density regulator for explosive compounding, the density regulator is composed of one or more intercombinants of perlite, carbon powder, aluminum powder and talcum powder.

Further, the density modifier is composed of one or more of the following intercomplexes in parts by weight: 500-950 parts of perlite, 10-400 parts of carbon powder, 50-300 parts of aluminum powder, and 30-200 parts of talc powder .

Further, the density regulator is composed of one or more of the following intercomplexes in parts by weight, 600-850 parts of perlite, 120-300 parts of carbon powder, 100-200 parts of aluminum powder, 60-150 parts of talc powder share.

Among them, the perlite is hydrophobic porous perlite, preferably with a particle size of 4-100 mesh. The carbon powder is produced by crushing industrial anthracite coal, preferably with a particle size of 4-200 mesh. The particle size of the aluminum powder is 20-200 mesh. Talc powder preferably has a particle size of 4-200 mesh.

A method for preparing a powdery explosive density regulator for explosive compounding. One or more of perlite, carbon powder, aluminum powder, and talc powder are put into a mixer by weight, and mixed for 30 to 60 minutes after starting the machine. Just in the bag.

Example 1

Weigh 40Kg of 20-mesh perlite, 5Kg of 50-mesh carbon powder, 2Kg of 100-mesh aluminum powder, and 3Kg of 80-mesh talc powder, put them into a mixer and mix them for 45 minutes, and take out the mixed density regulator. Prepare 470Kg modified ammonium oil explosives, add 30Kg of the above-mentioned density regulator in the mixing process, take the explosives after fully mixing, the bulk density of the explosives is 0.53g/cm3, the average detonation velocity is 1997m/s, and the intensity is 9.5mm .

Example 2

Weigh 40Kg of 50-mesh perlite, 5Kg of 80-mesh carbon powder, 2Kg of 120-mesh aluminum powder, and 3Kg of 100-mesh talc powder, put them into the mixer and mix them for 50 minutes, and take out the mixed density regulator. Prepare 480Kg modified ammonium oil explosives, add 20Kg of the above-mentioned density regulator in the mixing process, take the explosives after fully mixing, the bulk density of the explosives is 0.61g/cm3, the average detonation velocity is 2352m/s, and the intensity is 11.2mm .

Example 3

Weigh 40Kg of 70-mesh perlite, 3Kg of 100-mesh carbon powder, 2Kg of 150-mesh aluminum powder, and 5Kg of 200-mesh talc powder, put them into a mixer and mix them for 60 minutes, and take out the mixed density regulator. Prepare 470Kg of modified ammonium oil explosives, add 30Kg of the above-mentioned density regulator in the mixing process, take the explosives after fully mixing, record the bulk density of explosives as 0.55g/cm3, the detonation velocity is 1914m/s, and the intensity is 9.3mm.

The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, so all equivalent changes made with the contents of the claims of the present invention should be included within the scope of the claims of the present invention .

Claims (7)

1. a kind of Explosion composite powder type explosive density adjuster, it is characterised in that the density adjuster is by perlite, carbon One or more interworking things composition in powder, aluminium powder, talcum powder.

2. a kind of Explosion composite powder type explosive density adjuster as claimed in claim 1, it is characterised in that the density is adjusted Section agent is made up of one or more interworking things of following parts by weight, 500~950 parts of perlite, 10~400 parts of carbon dust, aluminium powder 50 ~300 parts, 30~200 parts of talcum powder.

A kind of 3. Explosion composite powder type explosive density adjuster as claimed in claim 2, it is characterised in that the perlite For hydrophobicity expanded perlite, its granular size is 4~100 mesh.

4. a kind of Explosion composite powder type explosive density adjuster as claimed in claim 3, it is characterised in that the carbon dust is Industrial anthracitic coal is broken to be formed, and its granular size is 4~200 mesh.

A kind of 5. Explosion composite powder type explosive density adjuster as claimed in claim 4, it is characterised in that the aluminium powder Grain size is 20~200 mesh.

A kind of 6. Explosion composite powder type explosive density adjuster as claimed in claim 5, it is characterised in that the talcum powder Granular size be 4~200 mesh.

7. a kind of preparation method of the powder type explosive density adjuster of the Explosion composite as described in claim 1 to 6, its feature exist In, put into one or more in perlite, carbon dust, aluminium powder, talcum powder by weight in batch mixer, start mixing 30~ It is fitted into after 60Min in bag.