Low explosion velocity explosive for explosive welding

Abstract

The invention relates to a low explosion velocity explosive for explosive welding, which comprises the following components by weight percentage: 70-85 percent of No. 2 rock ammonium nitrate explosive, 10-25 percent of NaCl and 5-15 percent of water, and the components are uniformly mixed and prepared on the site. According to the low explosion velocity explosive, the explosion velocity of a common explosive is decreased, the use amount and the cost of a composite explosive for explosion are lowered; the low explosion velocity explosive overcomes the defects of over high explosion velocity and high probability of damaging the composite material low in the fusing point when the No. 2 rock ammonium nitrate explosive is directly used; explosives at different explosion velocities can be prepared according to different requirements of different materials on the explosion velocities on the site, and the technique is simple.

Description

technical field [0001] The invention relates to an explosive, in particular to a low-detonation-velocity explosive for explosive welding and a preparation method thereof. Background technique [0002] Explosive welding technology (used to be called explosive composite) uses explosives as the energy source, and through the detonation effect of explosives, one material (layer) collides with another material (base layer) at high speed to realize the metallurgical bonding of the two metals, and the bonding area appears as Corrugated metallurgical bond. According to experience summary and scientific analysis, the detonation velocity of explosives used for explosive welding must be controlled within the range of 1500m / s-2800m / s to ensure the quality of explosive welding. The commonly used civil explosives have a detonation velocity of 2800m / s-6500m / s, so it is required to reduce the detonation velocity of explosives for explosive welding. At present, the methods for reducing the...

AI Technical Summary

Problems solved by technology

The explosives prepared by the first two methods have high sensitivity, are unsafe, high in cost, and are prone to environmental pollution; the explosives prepared by the third method have poor stability and are prone to unstable detonation velocity; the explosives prepared by the fourth method are expensive , The process is complicated, and the explosion speed cannot be adjusted on site