CN107200670B - A kind of low blasting speed emulsion and its application - Google Patents
A kind of low blasting speed emulsion and its application Download PDFInfo
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- CN107200670B CN107200670B CN201710476936.5A CN201710476936A CN107200670B CN 107200670 B CN107200670 B CN 107200670B CN 201710476936 A CN201710476936 A CN 201710476936A CN 107200670 B CN107200670 B CN 107200670B
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B31/00—Compositions containing an inorganic nitrogen-oxygen salt
- C06B31/28—Compositions containing an inorganic nitrogen-oxygen salt the salt being ammonium nitrate
- C06B31/285—Compositions containing an inorganic nitrogen-oxygen salt the salt being ammonium nitrate with fuel oil, e.g. ANFO-compositions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/06—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of high energy impulses, e.g. magnetic energy
- B23K20/08—Explosive welding
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B23/00—Compositions characterised by non-explosive or non-thermic constituents
- C06B23/006—Stabilisers (e.g. thermal stabilisers)
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B23/00—Compositions characterised by non-explosive or non-thermic constituents
- C06B23/007—Ballistic modifiers, burning rate catalysts, burning rate depressing agents, e.g. for gas generating
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B31/00—Compositions containing an inorganic nitrogen-oxygen salt
- C06B31/28—Compositions containing an inorganic nitrogen-oxygen salt the salt being ammonium nitrate
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- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention belongs to commercial explosive technical fields, and the present invention provides a kind of low blasting speed emulsions comprising basic emulsion and clay；The mass percent of the basis emulsion is greater than 70% and is less than or equal to 95%；The mass percent of the clay is more than or equal to 5% and less than 30%；The basis emulsion is sensitized obtaining by emulsified bases through sensitizer；The main component of the clay includes the oxide of silica and aluminium.Also, the present invention also provides the application of low blasting speed emulsion described above in metallic explosive welding.The present invention is to provide a kind of cheap novel low blasting speed emulsions, it can be used for explosive welding different metal material, be conducive to enterprise according to oneself needing to adjust emulsion explosion velocity, brisance, be also beneficial to reduce the price of Explosion composite special dynamite, reduce the pollution to environment to the full extent.
Description
Technical field
The invention belongs to commercial explosive technical field more particularly to a kind of low blasting speed emulsion and its applications, can be used for
Explosive welding between different metal material, and in particular to the formula of low-cost explosive designs and preparation process.
Background technique
Explosion welding technique is to make plied timber high speed by the detonation process of energetic material using energetic material as the energy
Base material is collided, realizes the metallurgical bonding between various metals.
In existing process for producing composite material, Explosion composite has many advantages, such as efficient, reliable, economical.But in order to make
Plied timber has sufficiently high speed, and traditional explosion cladding process often requires that biggish explosive payload, caused direct
The result is that plied timber easily forms damage in recombination process, while bond strength is reduced.This traditional method exists
The disadvantages of energetic material capacity usage ratio is low, environmental pollution is serious.Based on this, the explosion velocity of explosive that explosive welding uses must be controlled
In the range of 2000~2800m/s, it can just obtain preferably combine effect in this way.And common civil explosive explosion velocity generally exists
3500~5000m/s, therefore, the explosion velocity for reducing blasting explosive for explosion welding have practical significance.
Commercial explosive is also known as civil explosive, is constituted according to oxygen balance principle quick-fried based on oxidant and fuel agent
Fried property mixture.The commercial explosive kind primarily now used has three classes: nitrolite, ammonium nitrate-fuel oil mixture and emulsion.And it is normal
Low explosive is commonly divided into two kinds: one is simple substance high explosives to add diluent, and high explosive used is TNT, black rope
The military explosives such as gold.These high explosives danger of production process are high, at high cost, while it can generate largely have in use
Harmful detonation product pollutes environment.Another kind is that diluent is added in bulking ammonium nitrate explosive or modified ammonium nitrate-fuel oil explosive, is such as added
The particles such as hollow glass micro-ball, perlite, wood powder are to reduce explosion velocity；But it there are brisance, power are low, detonation property is difficult to
The disadvantages of meeting explosive welding requirement.
Emulsion is the Typical Representative of water-based explosive, and compared with nitrolite, ammonium nitrate-fuel oil mixture, it has excellent water resistant
Property, it is almost non-hygroscopic, prevented from caking the features such as.The component of emulsion has: oxidant, fuel agent, emulsifier, sensitizer and hair
The Water-In-Oil that infusion (or density-controlling agent), stabilizer etc., usually aqueous oxidizing agent solution and oils are formed through emulsification
The blasting agent of gel, or the creaminess, glue and the solid that are mixed again with other additives etc..Emulsion is extensive
Applied to various civil blasts work in, wherein there is the emulsion of the minor diameter low blasting speed for photoface exploision.
Application No. is 200910026379.2 (Publication No. CN 101537570A, publication date are September in 2009 23)
A kind of special low explosive formula technique for explosive welding is disclosed in Chinese patent literature, is using emulsion
For main material, and the substances such as 20%~25% industrial table salt, 5% perlite, 7% saw powder being added, explosion velocity of explosive is about 2000~
2500m/s.Have in its limitation, such as foregoing invention formula for the formula design of low explosive at present and has used 20%
~25% industrial table salt has very important influence to environment after long-time service.
Summary of the invention
In view of this, the application provides a kind of low blasting speed emulsion and its application, novel emulsion provided by the invention is fried
Medical instrument has compared with low blasting speed, can be used for explosive welding between different metal material, and its is at low cost, moreover it is possible to reduction pair to the full extent
The pollution of environment.
The present invention provides a kind of low blasting speed emulsion comprising basic emulsion and clay；
The mass percent of the basis emulsion is greater than 70% and is less than or equal to 95%；
The mass percent of the clay is more than or equal to 5% and less than 30%；
The basis emulsion is sensitized obtaining by emulsified bases through sensitizer；
The main component of the clay includes the oxide of silica and aluminium.
Preferably, the emulsified bases includes ammonium nitrate, compound oil phase material, water and emulsifier.
Preferably, the sensitizer is selected from one of hollow glass microballoon, expanded perlite and sodium nitrite or a variety of.
Preferably, the basic emulsion includes the raw material of following mass fraction: 82%~90% ammonium nitrate；1%
~5% compound oil phase material；5%~12% water；1%~3% emulsifier；3%~4% sensitizer.
Preferably, the density of the basic emulsion is 0.85~1.35g/m3, explosion velocity 2815~5500m/s it
Between.
Preferably, the clay includes the ingredient of following mass fraction: 43%~55% silica；20%~25%
Aluminum oxide；1%~3.5% di-iron trioxide.
Preferably, the density of the clay is 0.9~1.2g/m3, aqueous to be not higher than 0.5wt%.
The present invention also provides the application of low blasting speed emulsion as described above in metallic explosive welding.
Compared with prior art, on the basis of modified emulsifying explosive provided by the invention has emulsion on the market,
Premised on guaranteeing that performance is stablized, using clay as regulator, explosion velocity, brisance is adjusted, to conveniently and efficiently adjust quick-fried
Hong performance.Basic emulsion in inventive formulation is high compared to ammonium nitrate-fuel oil mixture power, low-order detonation welding prepared therefrom
Explosive property is stablized, and meets the requirement of explosive welding explosive brisance 8~11mm, explosion velocity 2000-2800m/s, to ensure explosion
Welding effect.The unselected clay of appropriate (5wt%~30wt%), the main component packet of the clay is added in the present invention in explosive
The oxide for including silica and aluminium can reduce the detonation parameters such as explosion velocity, the brisance of explosive, while also function to the work of flame arrest
With, but not explosive is made to miss-fire.
Also, in the present invention, on the one hand due to being mixed with the unselected clay of 5wt%~30wt% in formula, more
Inexpensively, under the premise of meeting performance requirement, the ingredient of the basic emulsion in formula is reduced, to improve sexual valence
Than.On the other hand, unselected clay has the diluent of secondary pollution, such as gutter oil, industrial table salt instead of all multipair environment, quick-fried
Unselected clay components regression is naturally, without any additional environmental pollution after fried.
To sum up, the present invention can obtain low blasting speed emulsion, can be used for explosive welding different metal material, be conducive to enterprise
According to oneself needing to adjust emulsion explosion velocity, brisance, it is also beneficial to reduce the price, utmostly of Explosion composite special dynamite
Pollution of the upper reduction to environment.
Detailed description of the invention
Fig. 1 is the SEM photograph of unsifted unselected clay in embodiment 1；
Fig. 2 is the SEM photograph for the unselected clay being sieved in embodiment 1；
Fig. 3 is the XRD material phase analysis figure of unselected clay in embodiment 1；
Fig. 4 is the SEM photograph of low blasting speed emulsion in embodiment 1；
Fig. 5 is the explosive welding result of control group 2 in embodiment 1；
Fig. 6 is in embodiment 3 using the combination interface backscattered electron phase of the explosive welding of low blasting speed emulsion；
Fig. 7 is the propagation test result for the composite explosives that clay additional amount is different in embodiment 4.
Specific embodiment
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Art personnel every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
The present invention provides a kind of low blasting speed emulsions comprising basic emulsion and clay；
The mass percent of the basis emulsion is greater than 70% and is less than or equal to 95%；
The mass percent of the clay is more than or equal to 5% and less than 30%；
The basis emulsion is sensitized obtaining by emulsified bases through sensitizer；
The main component of the clay includes the oxide of silica and aluminium.
Novel emulsion explosive provided by the invention has compared with low blasting speed, can be used for explosive welding between different metal material, and
And its is at low cost, pollution is small.
By weight, explosive provided by the invention includes the basic emulsion of 70wt%~95wt%, or is emulsification
Explosive raw material；Wherein, 70% this end is free of endpoint value, i.e., the mass percent of the described basic emulsion is greater than 70% and is less than
Equal to 95%, preferably 72%~90%, more preferably 75%~85%.In an embodiment of the present invention, the basis emulsification
The density of explosive can be 0.85g/m3~1.35g/m3, preferably 1.10g/m3~1.25g/m3.In an embodiment of the present invention,
The explosion velocity of the basis emulsion can be adjusted between 2815~5500m/s；Corresponding brisance can be between 7.8~20.1mm
It adjusts.
Compared to ammonium nitrate-fuel oil mixture, the basic emulsion power in inventive formulation is high, low-order detonation weldering prepared therefrom
It connects explosive property to stablize, meets the requirement of explosive welding explosive brisance 8~11mm, explosion velocity 2000-2800m/s, to ensure quick-fried
Fried welding effect.In addition, composite explosives of the present invention are highly-safe, water-resistance is strong, and index amplitude of variation is smaller before the deadline.
The present invention is not particularly limited the source of the basic emulsion, and it is fried to can be existing emulsification in the market
Medicine usually is sensitized obtaining by emulsified bases through sensitizer.The emulsified bases does not have explosion property, is sensitized through sensitizer
Just there is explosivity afterwards.In some embodiments of the invention, the emulsified bases includes ammonium nitrate, compound oil phase material, water
And emulsifier；It can make by oneself, oxidant and combustible are such as mixed into using emulsifying manner by uniform latex, it can also be by market
On buy.The embodiment of the present invention preferably uses commercially available emulsified bases, from a wealth of sources, price rather moderate.Of the invention
In embodiment, the density of the emulsified bases can be 1.10~1.50g/m3.In some embodiments of the invention, the emulsification
After matrix sensitization, i.e., the explosion velocity of basic emulsion can be adjusted between 2815~5500m/s；Corresponding brisance can 7.8~
It is adjusted between 20.1mm.
After emulsified bases in the embodiment of the present invention by buying on the market, then it is sensitized through sensitizer and that basis emulsification is made is fried
Medicine.In some embodiments of the invention, by weight percent, the emulsified bases include 82%~90% ammonium nitrate, 1%
~5% compound oil phase material, 5%~12% water and 1%~3% emulsifier.Wherein, the compound oil phase material can be with
It is one of suitable oil product of the viscositys such as diesel oil, heavy oil, machine oil, white oil, vaseline, paraffin or a variety of；Its content can
Think 2~5%.The emulsifier can be one of dehydrating sorbitol monooleate, xylitol monoleate or a variety of
Mixed acid ester is also possible to polyisobutene succinimide class macromolecule emulsifier etc..In addition, the content of the water can be 10
~12%.
The present invention uses colloid emulsion, and sensitizer is used to play the role of " hot spot ", can be through physical sensitization
Or basic emulsion product is directly prepared into after chemical sensitization.In an embodiment of the present invention, the sensitizer is selected from hollow glass
One of glass microballoon, expanded perlite and sodium nitrite are a variety of.In a preferred embodiment of the invention, the basis emulsification
Explosive includes the raw material of following mass fraction: 82%~90% ammonium nitrate；1%~5% compound oil phase material；5%~
12% water；1%~3% emulsifier；3%~4% sensitizer.
In the present invention, the low blasting speed emulsion includes the unselected clay of 5wt%~30wt%, or is clay；
Wherein, 30% this end is free of endpoint value, i.e., the mass percent of the described clay is more than or equal to 5% and less than 30%, preferably
10%~28%, more preferably 15%~25%.In an embodiment of the present invention, the cheap novel low blasting speed emulsification is fried
Medicine is mainly made of following raw materials according by weight: basic emulsion 70wt% (being free of endpoint 70%)~95wt%；It is general
Logical clay 5wt%~30wt% (being free of endpoint 30%).
Suitable unselected clay is added in the present invention in explosive, and the main component of the clay includes silica and aluminium
Oxide can reduce the detonation parameters such as explosion velocity, the brisance of explosive, while also function to the effect of flame arrest, but not make explosive
It miss-fires.Also, in the present invention, on the one hand meeting performance due to being mixed with the unselected clay of 5wt%~30wt% in formula
Under the premise of it is required that, the ingredient of the basic emulsion in formula is reduced.On the other hand, unselected clay is instead of all multipair
Environment has the diluent of secondary pollution, such as gutter oil, industrial table salt, and unselected clay components regression is not naturally, appoint after explosion
What additional environmental pollution.Therefore, the cost performance of New Explosives of the present invention is high, and product pollution is small after frying.
In addition, the present invention can conveniently and efficiently adjust detonation property: in unselected clay incorporation not higher than before 30wt%
It puts, by changing the ratio of unselected clay and sensitizer, can be obtained the composite explosives of different explosive, brisance.
The present invention is using clay as regulator, and alternatively referred to as diluent belongs to inert additwe.The clay is also referred to as glutinous
Soil, main component include the oxide of silica and aluminium.The present invention does not have special limit to the type of the clay and source
System, using unselected clay.In some embodiments of the invention, by mass percentage, the clay is mainly by following
Ingredient is constituted: 43%~55% silica；20%~25% aluminum oxide；1%~3.5% di-iron trioxide.
Above-described embodiment is using typical unselected clay ingredient；Since it is mixed phase, the component kind of different regions unselected clay
Class is slightly different than regular meeting, but does not influence its use.
The embodiment of the present invention is preferably crossed 30 meshes before using clay, removes usual impurities.In implementation of the invention
In example, the clay after sieving can be dried to moisture not higher than 0.5wt%.In some embodiments of the invention, viscous after drying
The density of soil can be 0.9~1.2g/m3；It is aqueous to be not higher than 0.5wt%.Specifically, the embodiment of the present invention can be according to the following steps
Obtain the clay:
(1) unselected clay is rejected into obvious stone, rubble, then mixes Yu Shuizhong according to mass ratio 1:10~15, stirs into
2~3 days are stood after mud；
(2) water surface impurity is removed, takes out the clay after water-bed sufficiently sedimentation, drying for standby after removing water.
The present invention adds suitable inert substance unselected clay in explosive preparation process, mixes up to described low quick-fried
Fast emulsion.Specifically, the embodiment of the present invention also provides the preparation method of above-mentioned cheap novel low blasting speed emulsion,
The following steps are included:
Raw material is weighed respectively according to following mass percent: basic emulsion 70%~95%；Unselected clay 5%~
30%；
Basic emulsion is placed in 60~80 DEG C of temperature of insulating box, heat preservation is taken out after 8 minutes~12 minutes, by upper
Ratio incorporation unselected clay is stated to package spare after mixing to get to the low blasting speed emulsion that can be used for explosive welding.
Correspondingly, the application the present invention also provides low blasting speed emulsion as described above in metallic explosive welding.
In an embodiment of the present invention, the low blasting speed emulsion can be applied to the quick-fried of general steel plate and stainless steel plate
Fried welding, aluminium sheet and explosive welding, copper sheet and the explosive welding of stainless steel plate of stainless steel plate etc.；In this regard, the present invention is without spy
Different limitation.
In some embodiments of the invention, the condition of explosive welding includes: paving drug thickness degree 10mm, height of burst 5.0mm.At this
In other embodiments of invention, the condition of explosive welding includes: paving drug thickness degree 10mm, height of burst 8.0mm.
The explosion welding explosive with low explosion velocity that the embodiment of the present invention is prepared has stable performance, and density can be 0.85
~1.20g/m3.The brisance of low blasting speed emulsion of the present invention can be 8~11mm, and explosion velocity can be 2000-2800m/s, energy
Meet the technical requirements of explosive welding, ensures explosive welding effect.
Also, low blasting speed emulsion of the present invention basic non-environmental-pollution after fried, and it is cheap, it is easy to raw
It produces, is conducive to promote and apply.
For a further understanding of the application, to low blasting speed emulsion provided by the present application and its answered below with reference to embodiment
With being specifically described.
In following embodiment, used emulsified bases is with ammonium nitrate: 82~90, composite oil phase by buying on the market
Material: 2~5, water: 10~12, emulsifier: 1~3 (quality, %) composition is mixed oxidant and combustible using emulsifying manner
At uniform latex, (density is 1.10~1.50g/m3), basic emulsification is directly prepared into after physical sensitization, chemical sensitization respectively
Explosive product.
Embodiment 1
Explosive welding low blasting speed commercial explosive of the invention is prepared as follows:
(1) unselected clay is rejected into obvious stone, rubble, then mixes Yu Shuizhong according to mass ratio 1:12, stirs into mud
Stand 2~3 days afterwards；
(2) water surface impurity is removed, the clay after water-bed sufficiently sedimentation is taken out after removing water, crosses 30 meshes, then be dried to water
Divide and is not higher than 0.5wt%, it is spare.
Wherein, it is analyzed by scanning electron microscope (SEM), the pattern of unsifted unselected clay is referring to Fig. 1, and the left side is in Fig. 1
SEM photograph under 100 μm of usual impurities, the right are the SEM photograph under 200 μm of unsifted unselected clay.That has been sieved is common
Referring to fig. 2, Fig. 2 is the SEM photograph for the unselected clay being sieved in embodiment 1 to the pattern of clay.
X-ray diffraction (XRD) material phase analysis is carried out to unselected clay, as a result as shown in figure 3, the clay includes 43%
~55% silica；20%~25% aluminum oxide；1%~3.5% di-iron trioxide.Also, after drying
The density of clay is 0.9~1.2g/m3。
(3) basic emulsion (in this specification prepared by method, by hollow glass microballoon physical sensitization) 85kg is taken, is placed in
In 70 DEG C of insulating box, heat preservation is taken out after ten minutes, and the clay 15kg after incorporation is dry is uniformly mixed and is used for get the present invention
The low blasting speed emulsion (being denoted as experimental group) of explosive welding；Its density 1.16g/m3, explosion velocity 2650m/s, brisance 10.7mm, symbol
Close the special dimension that explosive welding etc. requires low blasting speed.Referring to fig. 4, Fig. 4 is in embodiment 1 to the pattern of gained composite explosives
The SEM photograph of low blasting speed emulsion, wherein visible clay and rounded glass microsphere.
By experimental group explosive application in the experiment of general steel plate-stainless steel plate explosive welding, paving drug thickness degree 10mm,
In the case where height of burst 8.0mm, two plate composite effects are good, observe that typical waveform combines after cutting sample.
Control group 1: by the above-mentioned basic emulsion (hollow glass microballoon physical sensitization) of 70kg and the above-mentioned drying of 30kg
Clay afterwards is mixed to prepare；The composite explosives miss-fire.
The above-mentioned basic emulsion (hollow glass microballoon physical sensitization) of control group 2:100kg；Its density 1.21g/m3, quick-fried
Speed is 5000m/s, brisance 19.6mm, does not meet the special dimension that explosive welding etc. requires low blasting speed.Above-mentioned Explosion composite
Under the experiment condition of plate, sample is cut after fried and observes between metal there is apparent diffusion layer, as shown in figure 5, being explosive charge energy mistake
Caused by height.
Specific performance comparison result is referring to table 1:
The results of property of 1 embodiment of table, 1 gained low blasting speed emulsion
Embodiment 2
Explosive welding low blasting speed commercial explosive of the invention is prepared as follows:
Basic emulsion (in this specification prepared by method, by expanded perlite physical sensitization) 80kg is taken, is placed in 70 DEG C
Insulating box in, heat preservation is taken out after ten minutes, and clay (with embodiment 1) 20kg after incorporation is dry is uniformly mixed to get this hair
The bright low blasting speed emulsion (being denoted as experimental group) for explosive welding；Its density is 1.10g/m3, explosion velocity 2450m/s, brisance
9.7mm meets the special dimension that explosive welding etc. requires low blasting speed.By experimental group explosive application in aluminium sheet-stainless steel plate
Explosive welding experiment in, in the case where spreading drug thickness degree 10mm, height of burst 5.0mm, two plate composite effects are good, see after cutting sample
Typical waveform is observed to combine.
Control group 1: after the above-mentioned basic emulsion (expanded perlite physical sensitization) of 70kg and the above-mentioned drying of 30kg
Clay be mixed to prepare；The composite explosives miss-fire.
(in this specification prepared by method, quick by expanded perlite physics for the above-mentioned basic emulsion of control group 2:100kg
Change)；Its density 1.31g/m3, explosion velocity 4500m/s, brisance 17.8mm do not meet explosive welding etc. and require low blasting speed
Special dimension.Under the experiment condition of above-mentioned explosive clad plate, compound plate (aluminium sheet) is flicked from substrate (stainless steel plate), is that explosive is quick-fried
Caused by fried energy is excessively high, reflection rarefaction wave is too strong.
Specific performance comparison result is referring to table 2:
The results of property of 2 embodiment of table, 2 gained low blasting speed emulsion
Embodiment 3
Explosive welding low blasting speed commercial explosive of the invention is prepared as follows:
Basic emulsion (in this specification prepared by method, by sodium nitrite chemical sensitization) 75kg is taken, is placed in 70 DEG C
In insulating box, heat preservation is taken out after ten minutes, and clay (with embodiment 1) 25kg after incorporation is dry is uniformly mixed to get the present invention
For explosive welding low blasting speed emulsion (being denoted as experimental group)；Its density 1.08g/m3, explosion velocity 2300m/s, brisance 8.0mm,
Meet the special dimension that explosive welding etc. requires low blasting speed.In experiment applied to copper sheet-stainless steel plate explosive welding,
In the case where spreading drug thickness degree 10mm, height of burst 5.0mm, two plate composite effects are good, observe that typical waveform combines after cutting sample,
As shown in fig. 6, Fig. 6 is in embodiment 3 using the combination interface backscattered electron phase of the explosive welding of low blasting speed emulsion.
Control group 1: after the above-mentioned basic emulsion (sodium nitrite chemical sensitization) of 70kg and the above-mentioned drying of 30kg
Clay is mixed to prepare；The composite explosives miss-fire.
The above-mentioned basic emulsion of control group 2:100kg (in this specification prepared by method, by sodium nitrite chemical sensitization)；
Its density 1.23g/m3, explosion velocity 5500m/s, brisance 20.1mm do not meet explosive welding etc. and require the special of low blasting speed
Field.Under the experiment condition of above-mentioned explosive clad plate, compound plate (copper sheet) is flicked from substrate (stainless steel plate), is explosive charge energy
It is too strong caused to measure excessively high, reflection rarefaction wave.
Specific performance comparison result is referring to table 3:
The results of property of 3 embodiment of table, 3 gained low blasting speed emulsion
Embodiment 4
Basic emulsion (in this specification prepared by method, by hollow glass microballoon physical sensitization) in Example 1,
It being placed in 70 DEG C of insulating box, heat preservation is taken out after ten minutes, the clay (with embodiment 1) after mixing different amounts of drying respectively,
It is uniformly mixed, respectively obtains composite explosives；Wherein, the additional amount of the clay is respectively 10%, 20%, 30%.
Propagation test, experimental method specifically: by the PVC of outer diameter 25mm, wall thickness 1mm are carried out to the composite explosives respectively
Plastic tube is cut into 100mm long, chooses 3.After the normal transparent tape seal of described PVC plastic pipe one end, other end difference
Densely it is packed into the novel emulsion explosive that unselected clay doping ratio is 10%, 20%, 30%.Adhesive tape sealing end underlay one
Block is with a thickness of the general steel plate of 1.0mm thickness, and the other end detonates after being inserted into detonator, whether to puncture the general steel plate of bottom as mark
Standard judges its whether stable propagation of explosion.Such as puncture bottom steel plate, the average diameter perforated is recorded together.Detailed results
Referring to Fig. 7, Fig. 7 is the propagation test result for the composite explosives that clay additional amount is different in embodiment 4.From figure 7 it can be seen that
Under the premise of unselected clay incorporation is not higher than 30wt%, composite explosives explosion transfer performance of the present invention is preferable；Incorporation is 30%
Composite explosives miss-fire.
As seen from the above embodiment, on the basis of composite explosives provided by the invention have emulsion on the market, benefit
It uses clay as regulator, explosion velocity, brisance is adjusted, to conveniently and efficiently adjust detonation property, and performance is stablized, and is easy to raw
It produces, can ensure explosive welding effect.Meanwhile the low blasting speed emulsion has cost performance is high, and fried rear product pollution is small etc.
Feature.
The above description of the embodiment is only used to help understand the method for the present invention and its core ideas.It should be pointed out that pair
For those skilled in the art, without departing from the principle of the present invention, the present invention can also be carried out
Some improvements and modifications, these improvements and modifications also fall within the scope of protection of the claims of the present invention.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (4)
1. a kind of low blasting speed emulsion, which is characterized in that including basic emulsion and clay；
The mass percent of the basis emulsion is greater than 70% and is less than or equal to 95%；
The mass percent of the clay is more than or equal to 5% and is less than or equal to 25%；
The basis emulsion is sensitized obtaining by emulsified bases through sensitizer；
The main component of the clay includes the oxide of silica and aluminium；The density of the clay is 0.9~1.2g/m3, contain
Water is not higher than 0.5wt%；The clay was the clay that 30 meshes remove usual impurities；
The emulsified bases includes ammonium nitrate, compound oil phase material, water and emulsifier；It is micro- that the sensitizer is selected from hollow glass
One of ball, expanded perlite and sodium nitrite are a variety of；
The basis emulsion includes the raw material of following mass fraction: 82%~90% ammonium nitrate；1%~5% it is compound
Oil phase material；5%~12% water；1%~3% emulsifier；3%~4% sensitizer.
2. low blasting speed emulsion according to claim 1, which is characterized in that it is described basis emulsion density be
0.85~1.35g/m3, explosion velocity is between 2815~5500m/s.
3. low blasting speed emulsion according to claim 1, which is characterized in that the clay includes following mass fraction
Ingredient: 43%~55% silica；20%~25% aluminum oxide；1%~3.5% di-iron trioxide.
4. application of the low blasting speed emulsion according to any one of claims 1 to 3 in metallic explosive welding.
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| CN108372357B (en) * | 2018-02-26 | 2020-08-28 | 中国科学技术大学 | Preparation method of explosive cladding tube with high energy utilization rate |
| CN108467328A (en) * | 2018-04-02 | 2018-08-31 | 安徽理工大学 | A kind of rollable blasting explosive for explosion welding |
| CN110937964A (en) * | 2019-12-25 | 2020-03-31 | 四川金雅科技有限公司 | Composite oil phase for mixed emulsion explosive and preparation method thereof |
| CN111908987A (en) * | 2020-07-31 | 2020-11-10 | 宜兴市阳生化工有限公司 | Low-detonation-velocity small-diameter powdery emulsion explosive |
| CN113860976A (en) * | 2021-11-24 | 2021-12-31 | 安徽理工大学 | Preparation method of hollow polymer microsphere sensitized emulsion explosive for explosive welding |
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| CN101537570A (en) * | 2009-04-22 | 2009-09-23 | 南京润邦金属复合材料有限公司 | Explosion-welding/rolling copper-aluminum compound conductive bar |
| CN104761418A (en) * | 2015-04-07 | 2015-07-08 | 宏大矿业有限公司 | Low-detonation-velocity explosive for explosive welding and preparation method thereof |
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| CN101537570A (en) * | 2009-04-22 | 2009-09-23 | 南京润邦金属复合材料有限公司 | Explosion-welding/rolling copper-aluminum compound conductive bar |
| CN104761418A (en) * | 2015-04-07 | 2015-07-08 | 宏大矿业有限公司 | Low-detonation-velocity explosive for explosive welding and preparation method thereof |
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