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Special explosive for explosively welding noble metal composite material and preparation thereof

A composite material, explosive welding technology, applied in explosives and other directions, can solve the problems of bonding interface melting, low composite rate and interface bonding strength of precious metal composite materials, and can not meet the requirements of use, etc., to achieve high interface bonding rate and bonding strength, The effect of simple manufacturing method and low cost of raw materials

Active Publication Date: 2009-04-22
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the statistics of the sound velocity of commonly used metal materials, in explosive welding, the detonation velocity of explosives generally used should be 2000-3000m / s. Explosive welding of precious metal composite materials such as alloys often causes large-area melting of the bonding interface, resulting in low recombination rate and interface bonding strength of precious metal composite materials, which cannot meet the requirements of use

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  • Special explosive for explosively welding noble metal composite material and preparation thereof
  • Special explosive for explosively welding noble metal composite material and preparation thereof

Examples

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Effect test

Embodiment 1

[0017] Taking industrial production of 1000kg precious metal composite explosive welding special explosive as an example, the selected components and mass ratio are: ammonium nitrate 75%, composite oil phase 3.5%, wood flour 3.5%, salt 15%, 60 mesh hollow glass microspheres 3.0 %, wherein the composition and mass ratio of the composite oil phase are: 30% diesel oil, 30% 32# common machine oil, and 40% paraffin. According to the above-mentioned components and formula, the implementation steps are: the first step: take 750kg ammonium nitrate and carry out expansion treatment to obtain expanded ammonium nitrate; the second step: take 10.5kg diesel oil, 10.5kg machine oil and 14kg paraffin heating Become composite oil phase; the 3rd step: take by weighing 35kg wood flour, 150kg salt, 30kg hollow glass microspheres and the first step and the expanded ammonium nitrate that the second step makes and composite oil phase mix in wheel mill; The fourth step: cool the material prepared in...

Embodiment 2

[0019] Taking the industrial production of 1000kg precious metal composite material explosion welding special explosive as an example, the selected components and mass ratio are: ammonium nitrate 64%, composite oil phase 2%, wood flour 2.5%, salt 30%, 80 mesh hollow glass microspheres 1.5 %, wherein the composition and mass ratio of the composite oil phase are: 50% diesel oil, 20% 46# common machine oil, and 30% paraffin. According to the above components and formula, the implementation steps are: first step: weigh 640kg of ammonium nitrate and carry out expansion treatment to obtain expanded ammonium nitrate; second step: weigh 10kg of diesel oil, 4kg of machine oil and 6kg of paraffin and heat to make a compound Oil phase; the third step: take by weighing 25kg wood flour, 300kg salt, 15kg hollow glass microspheres and the first step and the second step made expanded ammonium nitrate and composite oil phase are mixed in the wheel mill; the fourth Step 1: Cool the material pre...

Embodiment 3

[0021] Taking the industrial production of 1000kg precious metal composite material explosion welding special explosive as an example, the selected components and mass ratio are: ammonium nitrate 70%, composite oil phase 2.5%, wood powder 3.0%, salt 22%, 80 mesh hollow glass microspheres 2.5% %, wherein the composition and mass ratio of the composite oil phase are: 35% of diesel oil, 15% of 68# common machine oil, and 50% of paraffin wax. According to the above components and formula, the implementation steps are: the first step: take 700kg ammonium nitrate and carry out expansion treatment to obtain expanded ammonium nitrate; the second step: take 8.75kg diesel oil, 3.75kg machine oil and 12.5kg paraffin wax heating, Composite oil phase is made; the third step: take 30kg of wood powder, 220kg of salt, 25kg of hollow glass microspheres and the first and second steps of the obtained expanded ammonium nitrate and composite oil phase and mix them in the wheel mill Uniformity; the...

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Abstract

The invention discloses a detonator which is specially used for explosive welding and has a cladding layer made of copper, copper alloy, aluminum, aluminum alloy, titanium, titanium alloy and other noble metal composite materials and a manufacturing method thereof. The detonator comprises the following compositions in mass portion: 64 to 75 percent of ammonium nitrate, 2 to 3.5 percent of composite oil phase, 2.5 to 3.5 percent of wood powder, 15 to 30 percent of salt and 1.5 to 3.0 percent of hollow glass microsphere. Firstly, the ammonium nitrate is subjected to swelling treatment; secondly, swelled ammonium nitrate in a wheel mill is mixed with the composite oil phase, the wood powder, the salt and the hollow glass microsphere; and finally, a material is discharged at the temperature of 40 DEG C below zero to obtain the product. The detonator does not contain a composition of TNT, stable explosive performance, low cost for the raw materials and simple manufacturing method, and is suitable for industrialized production; and an interface of the noble metal composite material for explosive welding has high bonding rate and bonding strength.

Description

technical field [0001] The present invention relates to an explosive and a manufacturing method thereof, in particular to a special explosive for explosive welding of precious metal composite materials such as copper and copper alloy, aluminum and aluminum alloy, titanium and titanium alloy and the like and a manufacturing method thereof. Background technique [0002] Explosive welding is a metal processing method that uses explosives as the energy source, and under the action of explosive explosive loads, the clad metal collides with the base metal at high speed and is firmly connected together. As the energy source of explosive welding, the performance of explosives affects the quality of explosive welding, expressed in P H ,P 1 ,P 2 Represent the densities of the detonation product C-J surface, doubler material and substrate material respectively; C H 、C 1 、C 2 Represent the sound velocity propagating in the C—J surface of the detonation product, the cladding materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B31/28
Inventor 岳宗洪辛宝邓光平
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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