Powdery emulsion explosive for explosive welding

A technology of powdery emulsion explosives and explosive welding, which is applied in the fields of explosives, explosive composite components, explosive processing equipment, etc., can solve the problems that clay and sensitizers cannot be fully fused and blasting is not guaranteed, and achieve adjustable detonation velocity and easy mixing uniform effect

Inactive Publication Date: 2022-06-14
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it can meet the requirements of detonation velocity very well, it needs to be mixed with clay once when making emulsified matrix. It cannot guarantee that the clay and sensitizer can fully integrate with each component during the second mixing, which may cause explosion rejection.

Method used

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  • Powdery emulsion explosive for explosive welding
  • Powdery emulsion explosive for explosive welding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0028] St1: Preparation of water phase: add raw material water (8%) and sodium nitrate (7%) into the water phase proportioning tank, stir well under pressure and heating conditions, and then pass the crushed ammonium nitrate (79%) through the transport The hopper is added to the water-phase proportioning tank according to the preset ratio, and after it is completely dissolved, the temperature is kept at 100-110 °C for backup, or it is put into the water-phase storage tank for pressurization and insulation for backup.

[0029] St2: Preparation of oil phase: Paraffin (3%) emulsifier T-152 (2%) light diesel oil (1%) is mixed and added to the oil phase blending tank, under heating conditions, wait for all to melt and reach 90-100 ℃ When the mixture is mixed, it can be put into a mixer to mix evenly for later use, or put into an oil phase storage tank for later use.

[0030] St3: Forming an emulsified matrix: the water phase and the oil phase are respectively filtered by suction an...

Embodiment example 2

[0033] St1: Preparation of water phase: add raw material water (8%) and sodium nitrate (7%) into the water phase proportioning tank, stir well under pressure and heating conditions, and then pass the crushed ammonium nitrate (79%) through the transport The hopper is added to the water-phase proportioning tank according to the preset ratio, and after it is completely dissolved, the temperature is kept at 100-110 °C for backup, or it is put into the water-phase storage tank for pressurization and insulation for backup.

[0034] St2: Preparation of oil phase: Paraffin (3%) emulsifier T-152 (2%) light diesel oil (1%) is mixed and added to the oil phase blending tank, under heating conditions, wait for all to melt and reach 90-100 ℃ When the mixture is mixed, it can be put into a mixer to mix evenly for later use, or put into an oil phase storage tank for later use.

[0035] St3: Forming an emulsified matrix: the water phase and the oil phase are respectively filtered by suction an...

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Abstract

The invention relates to a novel low-detonation-velocity powdery emulsion explosive for explosive welding, and belongs to the field of industrial explosives. The emulsion explosive is a powdery emulsion explosive formed by mixing a pre-prepared emulsion matrix with powder such as iron powder or titanium hydride powder. The mass fraction of the emulsion matrix is 90%-80%, the mass fraction of the powder forming agents such as titanium hydride powder and iron powder is 10%-20%, the emulsion matrix is composed of a water phase and an oil phase, the water phase is composed of ammonium nitrate, sodium nitrate and water, and the oil phase is composed of light diesel oil, T-152 and paraffin. And after the two phases are prepared, pouring the water phase into the oil phase within 30 seconds, mixing, and shearing at the stirring speed of 1200 r / min for two minutes to prepare the emulsion matrix. The emulsion matrix is cemented before use, and when in use, the emulsion matrix and the prepared powder are directly and uniformly mixed and fully stirred into powder, and then the emulsion matrix can be put into use. Meanwhile, an enterprise can adjust the proportion and dosage of the powder according to the requirements of different explosive welding materials, so that the low-detonation-velocity emulsion explosive for explosive welding with different detonation velocities is prepared.

Description

technical field [0001] The invention relates to a method for synthesizing a novel powdery emulsion explosive, which can be fully stirred and mixed with a prepared emulsion matrix and a powder-forming agent, and in particular relates to a preparation method of a powdery emulsion explosive with low detonation velocity for explosive welding. Background technique [0002] Explosive welding is a special metal welding processing method, also known as explosive synthesis, which is a cross-border subject combining explosion, material and processing technology. At the moment when the explosive is detonated, the generated detonation wave is transmitted to the cladding plate, causing the cladding plate to impact the substrate at high speed, the two metals collide at high speed at the interface, and a high pressure is generated at the contact surface, forming a metal jet on the surface and removing the metal on the surface Membrane, an explosive processing technology that produces a sol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B31/28C06D5/10C06B21/00
CPCC06B31/285C06B21/0008C06D5/10
Inventor 李子涵王浩王瑞蒋八运李世周朱守军
Owner ANHUI UNIV OF SCI & TECH
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