CN102756430A - Explosive cutting device for brittle material - Google Patents
Explosive cutting device for brittle material Download PDFInfo
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- CN102756430A CN102756430A CN2011101087066A CN201110108706A CN102756430A CN 102756430 A CN102756430 A CN 102756430A CN 2011101087066 A CN2011101087066 A CN 2011101087066A CN 201110108706 A CN201110108706 A CN 201110108706A CN 102756430 A CN102756430 A CN 102756430A
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- cutting
- explosive
- brittle material
- fragile material
- triangle wire
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Abstract
The invention discloses an explosive cutting device for a brittle material. The device is used for cutting the material by the aid of a detonation driving principle and the characteristics of high notch sensitivity and low impact strength of the brittle material. Firstly, a triangular wire is driven to move at a high speed by means of explosive detonation, the tip of the triangular wire collides with the surface of the brittle material and forms a notch, and secondly, the notch is impacted by detonation waves, so that the brittle material is cracked and slabbed along the notch until breaking. The device can be made into a small-sized cutting cord for curve cutting, and can also be made into a large-sized linear cutter for linear cutting. An energy concentration liner is omitted, and the device is high in cutting capacity, low in manufacturing cost and capable of rapidly cutting the brittle material.
Description
Technical field
The invention belongs to a kind of blast processing unit (plant), particularly a kind of blast cutter sweep that is used for the fly-cutting fragile material.
Background technology
Fragile material is meant under external force and only produces the material that very little distortion promptly destroys fracture, thinks correspondingly with plastic material, and generally just percentage elongation is called plastic material greater than 5% material, and percentage elongation is called fragile material less than 5% material.Fragile material is of a great variety, accounts for the over half of current material, like glass, lucite, high silica phenolic resins, carbide alloy, graphite, pottery, rock, concrete, cast iron ..., all be fragile material.Compare with plastic material, fragile material has following characteristics: 1) resistance to compression tension not, promptly the tensile strength of fragile material is much smaller than compression strength.2) not shock resistance of anti-static load, promptly the impact strength of fragile material is much smaller than quasistatic intensity.3) stress is concentrated sensitivity, though so material is all used stress concentration effect, the fragile material counter stress is concentrated more responsive, has high notch sensitivity.4) hardness is high, and fragile material generally all has higher hardness.
Because the hardness of fragile material is high, be difficult to it is carried out cutting processing, the cutting technique of fragile material mainly contains at present: water jet cutting, diamond blade cutting, cut, plasma cutting.Though these cutting techniques have higher cutting accuracy, cutting speed is slow, and efficient is low, and all needs special equipment, complicated operation, and cutting cost is high.
Adopt the blast cutting technique can realize the fly-cutting of fragile material.What existing blast cutting technique adopted all is the cumulative principle, and promptly at the outside filling of the metal liner that has groove explosive, the cavity liner that crushes behind the explosive detonation makes energy accumulating form the high speed metal jet, utilizes metal jet cutting at last.Like patent of invention ZL200710012257 (plane-cabin energy-collected cutting apparatus) employing is the lead-antimony alloy cavity liner that has 80 ° of subtended angles; What utility model ZL95242267 (jet cutter) adopted is the metal liner of annular; What utility model ZL200820221979 (blast cutting valve) adopted also is the metal liner of annular, and what adopt is taper, hemispherical, tubaeform metal liner to utility model ZL200820109132 (broken wall flexible linear shaped charge).More than have the blast cutter sweep of cumulative cavity liner, the intensity of its metal jet is extremely low, can be approximated to be fluid, only is fit to the cutting plastic material, but for the higher fragile material of hardness, the breach that metal jet forms is shallow, and cutting power is relatively poor.The cavity liner material is generally fine copper or metal in addition, complex structure, and material cost and processing cost are high.
Summary of the invention
The object of the present invention is to provide a kind of fragile material to be had strong cutting power, and the blast cutter sweep that can carry out fly-cutting.
The technical solution that realizes the object of the invention is: a kind of blast cutter sweep that is used for fragile material; Comprise explosive, steel triangle wire, plastic channel and rubber groove; Steel triangle wire pointed end is installed in the plastic channel; Explosive is tiled in the upper surface of steel triangle wire, and the explosive height is concordant with the plastic channel upper edge; Open Side Down for rubber groove, and the outer wall of its inwall and plastic channel is used glue, with explosive and the sealing of steel triangle wire.
The present invention compared with prior art; Its remarkable advantage: (1) has replaced the cumulative cavity liner with the steel triangle wire, and under the situation of identical explosive charge, the steel triangle wire can form darker breach; Therefore can cut thicker fragile material open, make this blast cutter sweep have stronger cutting power.(2) replace the cumulative cavity liner of fine copper or metal with the steel triangle wire, reduced material cost and processing cost.(3) the explosive cross sectional shape is a rectangle, does not need the cumulative groove, has reduced the difficulty of processing and the processing cost of explosive mould.
Description of drawings
Accompanying drawing is a kind of sectional view that is used for the blast cutter sweep of fragile material of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
In conjunction with accompanying drawing, the present invention is a kind of blast cutter sweep that is used for the fly-cutting fragile material, is made up of explosive 1, steel triangle wire 2, plastic channel 3 and rubber groove 4.Steel triangle wire 2 pointed end are installed in the plastic channel 3, and explosive 1 is tiled in the upper surface of steel triangle wire 2, and explosive 1 height is concordant with plastic channel 3 upper edges.Open Side Down for rubber groove 4, and the outer wall of its inwall and plastic channel 3 is used glue, with explosive 1 and 2 sealings of steel triangle wire.
During use; Open Side Down sticks on brittle material surface with rubber groove 4, and the explosive 1 rear drive steel triangle wire 2 that detonates moves downward, and steel triangle wire 2 is cut the plastic channel 3 of very thin thickness open; The high-speed impact fragile material also forms breach on its surface; Detonation wave impacts on breach then, and fragile material cracks expansion and slabbing, finally ruptures.
Explosive is the solid explosive with higher explosion velocity, like flexible explosive, plastic explosive or cemented explosive.The steel triangle wire requires to have higher hardness, can be stainless steel or ordinary carbon steel.Plastic channel requires can be polyvinyl chloride, polyethylene or MPS for medium hardness and easy extruded that rubber groove requires to have medium hardness and good shock resistance, can be isoprene rubber or fluorubber.
The present invention has utilized the high notch sensitivity of detonation driven principle and fragile material, the characteristics of low impact strength to cut.At first explosive detonation drives the flight of steel triangle wire, the most advanced and sophisticated high-speed impact fragile material of steel triangle wire, and form darker breach in its surface, because fragile material has high notch sensitivity, so the darker fragile material of breach ruptures more easily.Detonation wave is with high speed and compression shock breach subsequently; Because the impact strength of fragile material is very low; Therefore can form crackle and expansion rapidly along breach; Simultaneously shock wave forms slabbing behind the free-surface reflection of fragile material, and final fragile material is expanded and the form of slabbing ruptures with crackle under the double action of notch sensitivity and shock loading.Explosive and steel triangle wire are installed in the plastic channel, and wrap up with rubber groove the outside, and the height that can change rubber groove is adjusted the height of burst (the most advanced and sophisticated distance to brittle material surface of steel triangle wire), thus the stroke speed of adjustment steel triangle wire.In addition, rubber groove can also absorb shock wave, can play the effect of protection, reduces the destruction of detonation to surrounding environment.This blast cutter sweep can be made undersized flexible linear shaped charge and carry out curvilinear cut, also can make large-sized linear cutter and carry out straight cuts.
Below in conjunction with specific embodiment the present invention is done further explain.
Embodiment 1
Arrange the blast cutting of carrying out poly (methyl methacrylate) plate by accompanying drawing.The length of poly (methyl methacrylate) plate is 400mm, and width is 200mm, and thickness is 20mm.Explosive is for being the flexible explosive of main component with the HMX, and density is 1.5g/cm
3, explosion velocity is 7000m/s, the cross-sectional width of explosive is 2mm, highly is 2mm.Steel triangle wire material is 304 stainless steels, bottom side length 2mm, and high 1.5mm, the height of burst is 2mm.The polyvinyl chloride plastic trough sidewalls is thick to be 0.5mm, and the isoprene rubber cell wall is thick to be 10mm.Behind the explosive initiation, the steel triangle wire cuts into two along its length with poly (methyl methacrylate) plate, and otch is neat, cuts consuming time less than 1ms.
Embodiment 2
Arrange the blast cutting of carrying out marble slab by accompanying drawing.The length of marble slab is 400mm, and width is 200mm, and thickness is 30mm.Explosive uses with the plastic explosive of hexogen as main component, and density is 1.65g/cm
3, explosion velocity is 8000m/s, the cross-sectional width of explosive is 3mm, highly is 3mm.Steel triangle wire material is 201 stainless steels, bottom side length 3mm, and high 2mm, the height of burst is 2mm.The vinyon cell wall is thick to be 0.5mm, and the fluorubber cell wall is thick to be 10mm.Behind the explosive initiation, the steel triangle wire cuts into two along its length with marble slab, and otch is neat, cuts consuming time less than 1ms.
Embodiment 3
Arrange the blast cutting of carrying out cast iron plate by accompanying drawing.The length of cast iron plate is 1500mm, and width is 500mm, and thickness is 300mm.Explosive uses with the cemented explosive of hexogen as main component, and density is 1.65g/cm
3, explosion velocity is 8300m/s, the cross-sectional width of explosive is 20mm, highly is 20mm.Steel triangle wire material is No. 45 carbon steel, bottom side length 20mm, and high 20mm, the height of burst is 4mm.The modified polystyrene plastic cell wall is thick to be 2mm, and the isoprene rubber cell wall is thick to be 30mm.Behind the explosive initiation, the steel triangle wire cuts into two along its length with cast iron plate, and otch is neat, cuts consuming time less than 1ms.
Embodiment 4
Arrange the blast cutting of carrying out concrete slab by accompanying drawing.The length of concrete slab is 600mm, and width is 300mm, and thickness is 200mm.Explosive uses with the flexible explosive of HMX as main component, and density is 1.65g/cm
3, explosion velocity is 7500m/s, the cross-sectional width of explosive is 20mm, highly is 20mm.Steel triangle wire material is 310 stainless steels, bottom side length 20mm, and high 20mm, the height of burst is 5mm.The polyvinyl chloride plastic trough sidewalls is thick to be 1mm, and the fluorubber cell wall is thick to be 20mm.Behind the explosive initiation, the steel triangle wire cuts into two along its length with concrete slab, and otch is neat, cuts consuming time less than 1ms.
Other fragile materials also can be realized fly-cutting according to the method described above.
Claims (4)
1. blast cutter sweep that is used for fragile material; It is characterized in that: comprise explosive (1), steel triangle wire (2), plastic channel (3) and rubber groove (4); Steel triangle wire (2) pointed end is installed in the plastic channel (3); Explosive (1) is tiled in the upper surface of steel triangle wire (2), and explosive (1) height is concordant with plastic channel (3) upper edge; Open Side Down for rubber groove (4), and the outer wall of its inwall and plastic channel (3) is used glue, with explosive (1) and steel triangle wire (2) sealing.
2. a kind of blast cutter sweep that is used for fragile material according to claim 1 is characterized in that: steel triangle wire (2) is stainless steel or ordinary carbon steel.
3. a kind of blast cutter sweep that is used for fragile material according to claim 1 is characterized in that: plastic channel (3) is for being polyvinyl chloride, polyethylene or MPS.
4. a kind of blast cutter sweep that is used for fragile material according to claim 1 is characterized in that: rubber groove (4) is isoprene rubber or fluorubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110108706.6A CN102756430B (en) | 2011-04-28 | 2011-04-28 | Explosive cutting device for brittle material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110108706.6A CN102756430B (en) | 2011-04-28 | 2011-04-28 | Explosive cutting device for brittle material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102756430A true CN102756430A (en) | 2012-10-31 |
| CN102756430B CN102756430B (en) | 2014-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110108706.6A Expired - Fee Related CN102756430B (en) | 2011-04-28 | 2011-04-28 | Explosive cutting device for brittle material |
Country Status (1)
| Country | Link |
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| CN (1) | CN102756430B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111923397A (en) * | 2020-08-07 | 2020-11-13 | 重庆工程职业技术学院 | Printing module and device for printing and processing cutting cable through 3D |
| CN112238177A (en) * | 2020-10-16 | 2021-01-19 | 安徽理工大学 | Energy-gathered cutting device with variable explosion height |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1275721A (en) * | 1961-06-08 | 1972-05-24 | Mine Safety Appliances Co | Signal flare and mine-anchor line cutter utilizing the same |
| US5936184A (en) * | 1997-11-21 | 1999-08-10 | Tracor Aerospace, Inc. | Devices and methods for clearance of mines or ordnance |
| US20050011395A1 (en) * | 2003-05-27 | 2005-01-20 | Surface Treatment Technologies, Inc. | Reactive shaped charges and thermal spray methods of making same |
| CN101234428A (en) * | 2008-03-06 | 2008-08-06 | 张路青 | Flat plate exploder capable of improving velocity of flyer |
| CN101520291A (en) * | 2009-03-23 | 2009-09-02 | 赵东平 | Underwater explosive perforation bullet |
| EP2159533A2 (en) * | 2008-08-25 | 2010-03-03 | Ensign-Bickford Aerospace & Defense Company | Explosive cutting charge |
| CN201769289U (en) * | 2010-08-05 | 2011-03-23 | 南通通立电机磁瓦有限公司 | Magnetic tile cutter |
-
2011
- 2011-04-28 CN CN201110108706.6A patent/CN102756430B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1275721A (en) * | 1961-06-08 | 1972-05-24 | Mine Safety Appliances Co | Signal flare and mine-anchor line cutter utilizing the same |
| US5936184A (en) * | 1997-11-21 | 1999-08-10 | Tracor Aerospace, Inc. | Devices and methods for clearance of mines or ordnance |
| US20050011395A1 (en) * | 2003-05-27 | 2005-01-20 | Surface Treatment Technologies, Inc. | Reactive shaped charges and thermal spray methods of making same |
| CN101234428A (en) * | 2008-03-06 | 2008-08-06 | 张路青 | Flat plate exploder capable of improving velocity of flyer |
| EP2159533A2 (en) * | 2008-08-25 | 2010-03-03 | Ensign-Bickford Aerospace & Defense Company | Explosive cutting charge |
| CN101520291A (en) * | 2009-03-23 | 2009-09-02 | 赵东平 | Underwater explosive perforation bullet |
| CN201769289U (en) * | 2010-08-05 | 2011-03-23 | 南通通立电机磁瓦有限公司 | Magnetic tile cutter |
Non-Patent Citations (1)
| Title |
|---|
| 袁宝慧 等: "聚酯类工程塑料的***精确切割", 《火***学报》, vol. 26, no. 3, 31 August 2003 (2003-08-31), pages 70 - 72 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111923397A (en) * | 2020-08-07 | 2020-11-13 | 重庆工程职业技术学院 | Printing module and device for printing and processing cutting cable through 3D |
| CN112238177A (en) * | 2020-10-16 | 2021-01-19 | 安徽理工大学 | Energy-gathered cutting device with variable explosion height |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102756430B (en) | 2014-11-12 |
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Granted publication date: 20141112 Termination date: 20160428 |