CN113333936A - Method for preparing explosive cladding tube under local vacuum environment by using water pressure - Google Patents
Method for preparing explosive cladding tube under local vacuum environment by using water pressure Download PDFInfo
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- CN113333936A CN113333936A CN202110690296.4A CN202110690296A CN113333936A CN 113333936 A CN113333936 A CN 113333936A CN 202110690296 A CN202110690296 A CN 202110690296A CN 113333936 A CN113333936 A CN 113333936A
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- pipe
- compounded
- environment
- composited
- explosion
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- 239000002360 explosive Substances 0.000 title claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000005253 cladding Methods 0.000 title claims abstract description 11
- 238000004880 explosion Methods 0.000 claims abstract description 30
- 238000003466 welding Methods 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 238000005474 detonation Methods 0.000 claims abstract description 7
- 238000002360 preparation method Methods 0.000 claims abstract description 6
- 239000002131 composite material Substances 0.000 claims description 18
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000002679 ablation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- 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
- B23K20/085—Explosive welding for tubes, e.g. plugging
-
- 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
- B23K20/14—Preventing or minimising gas access, or using protective gases or vacuum during welding
-
- 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
- B23K20/24—Preliminary treatment
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention provides a method for preparing an explosive cladding tube under a partial vacuum environment by using water pressure, which comprises the following steps: coaxially arranging a pipe 1 to be compounded, a pipe 2 to be compounded, a small-size PVC pipe 3-1 and a large-size PVC pipe 3-2 from inside to outside, and filling explosives and detonators between the PVC pipe 3-1 and the PVC pipe 3-2 to form an explosion device; sealing and vacuumizing two ends of a gap between the pipe 1 to be compounded and the pipe 2 to be compounded by using a sealing strip, and constructing a vacuum gap environment; filling water among the pipe 2 to be compounded, the explosion device and the pipe 3 to be compounded to construct a water environment; and welding and combining the pipes to be composited by the detonation explosion device to obtain the high-quality explosion composited pipe. The method for preparing the explosive cladding tube under the local vacuum environment by using the water pressure effectively avoids the phenomenon that the bonding interface of the cladding tube is melted in a large area in the traditional preparation method; the problem that the traditional method can not process thin-wall pipes is solved; the size of the pipe to be compounded is more freely selected.
Description
Technical Field
The invention belongs to the field of explosive welding, and relates to a method for preparing an explosive cladding tube under a local vacuum environment by using water pressure.
Background
The bimetal composite pipe is a high-quality composite material widely applied to the fields of aerospace, petrochemical industry, mineral refining and the like, integrates the advantages of high strength, good ductility, strong corrosion resistance and the like, and ensures that the physical and chemical properties of the original metal material are unchanged. Explosive welding utilizes high pressure generated by explosive explosion to metallurgically bond a plurality of metals, and is a common solid welding process for producing bimetal composite materials. The explosion welding is applied in large scale in the manufacturing industry, and is characterized by relatively low production cost and capability of manufacturing bimetal and even multi-metal composite materials with a plurality of wide purposes,
explosive welding has advantages that traditional metal processing methods such as hot rolling, cold welding, etc. do not have. However, in the conventional explosion welding, the air layer in the gap is difficult to be discharged completely in time in the explosion welding process, which not only reduces the bonding quality of the materials to be welded, but also makes it more likely that the base layer and the clad layer cannot be bonded completely.
In addition, in the traditional explosion welding, the explosive is directly attached to the pipe to be composited, so that the surface of the composite material is often ablated and damaged by high temperature generated by explosion of the explosive, the product quality is influenced, and serious secondary pollution such as dust, noise and the like is brought. The medicine distributing mode is low in operability, and the sizes of the pipe and the bar to be compounded can not be adjusted in time according to actual conditions in the production process.
Disclosure of Invention
The invention provides a method for preparing an explosive composite tube under a local vacuum environment by using water pressure, and aims to reduce the surface burning damage of the composite tube caused by direct contact of an explosive and a tube to be composited and solve the influence of air in a gap on the explosive welding production of the composite tube. The method obviously increases the strength of the bonding interface of the explosion composite tube, avoids large-area melting of the bonding interface of the composite tube due to untimely air discharge in the gap, and effectively improves the operability in the production process.
The technical scheme adopted by the invention is a method for preparing an explosive cladding tube under a partial vacuum environment by utilizing water pressure, and the method comprises the following steps:
1) coaxially arranging a pipe 1 to be compounded, a pipe 2 to be compounded, a small-size PVC pipe 3-1 and a large-size PVC pipe 3-2 from inside to outside, and filling explosives and detonators between the PVC pipe 3-1 and the PVC pipe 3-2 to form an explosion device 3;
2) sealing and vacuumizing two ends of a gap between the pipe 1 to be compounded and the pipe 2 to be compounded by using a sealing strip, and constructing a vacuum gap environment 4;
3) and filling water between the pipe 2 to be composited and the explosion device to construct a water environment 5.
4) And welding and combining the pipes to be composited by the detonation explosion device to obtain the high-quality explosion composited pipe.
In the traditional method for preparing the explosion composite pipe, more explosives are arranged to be directly attached to a material to be composite, and an air layer in a gap of the composite material is basically not treated. This not only seriously affects the surface quality of the produced explosion cladding pipe, but also may melt in large area on the bonding interface during the detonation process, reducing the bonding strength of the explosion cladding pipe. The invention provides a method for preparing an explosive composite tube under a local vacuum environment by using water pressure, on one hand, two ends of a gap between a tube 1 to be composited and a tube 2 to be composited are sealed and vacuumized by using a sealing strip, and the problem of fusion of a bonding surface of the composite tube caused by the fact that an air layer in the gap is not completely exhausted is avoided; on the other hand, an incompressible water environment is arranged on the surfaces of the explosion device and the pipe 2 to be composited, so that the surface ablation of the composite pipe caused by the direct contact of the explosive and the pipe wall is avoided. In the actual production process, the size change of the pipe to be compounded can be realized by adjusting the thickness of the water environment, the operability is higher, the selection of the explosive detonation velocity is more free, the operation is popular and easy to understand, and the preparation method is simple.
Drawings
FIG. 1 is a two-dimensional structure diagram of the present invention, including the arrangement of the pipe to be composited, the vacuum environment, the explosive device, and the water environment;
FIG. 2 is a three-dimensional block diagram of the present invention
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings.
The method for preparing the explosive cladding tube in the partial vacuum environment by using the water pressure is provided by combining the accompanying drawings, and comprises the following steps:
1) coaxially arranging a pipe 1 to be compounded, a pipe 2 to be compounded, a small-size PVC pipe 3-1 and a large-size PVC pipe 3-2 from inside to outside, and filling explosives and detonators between the PVC pipe 3-1 and the PVC pipe 3-2 to form an explosion device 3;
2) sealing and vacuumizing two ends of a gap between the pipe 1 to be compounded and the pipe 2 to be compounded by using a sealing strip, and constructing a vacuum gap environment 4;
3) and filling water between the pipe 2 to be composited and the explosion device to construct a water environment 5.
4) And welding and combining the pipes to be composited by the detonation explosion device to obtain the high-quality explosion composited pipe.
Compared with the prior art, the invention has the following advantages:
1) the invention sets the gap between the pipes to be compounded into a vacuum environment, so that the explosive is not only limited to selecting the detonation velocity as low as possible, but also has higher selectivity.
2) According to the invention, the water environment is set between the explosion device and the outer wall of the pipe, so that the thin-walled pipe which is difficult to process by traditional explosion welding can be processed with high quality, and the risk of ablation damage caused by high temperature in the production of the composite material is fully reduced.
3) The vacuum environment gap introduced by the invention avoids large-area melting of the joint surface of the pipe caused by the adiabatic compression of air which is not completely discharged in the gap, effectively solves the problem of insufficient discharge of gap gas which is difficult to overcome by the traditional explosive welding, and simultaneously enhances the joint strength of the bimetal explosive composite pipe.
4) The invention can realize the adjustment of the size of the pipe to be compounded by changing the thickness of the water environment, and has convenient and quick operation and higher operability.
Claims (6)
1. A method for preparing an explosive cladding tube in a partial vacuum environment by using water pressure is characterized by comprising the following steps:
1) coaxially arranging a pipe 1 to be compounded, a pipe 2 to be compounded, a small-size PVC pipe 3-1 and a large-size PVC pipe 3-2 from inside to outside, and filling explosives and detonators between the PVC pipe 3-1 and the PVC pipe 3-2 to form an explosion device 3;
2) sealing and vacuumizing two ends of a gap between the pipe 1 to be compounded and the pipe 2 to be compounded by using a sealing strip, and constructing a vacuum gap environment 4;
3) and filling water between the pipe 2 to be composited and the explosion device to construct a water environment 5.
4) And welding and combining the pipes to be composited by the detonation explosion device to obtain the high-quality explosion composited pipe.
2. The preparation method according to claim 1, wherein the wall thickness of the pipe to be compounded is 4.5-16 mm; the wall thickness of the pipe 2 to be compounded is 0.5-8 mm.
3. The preparation method according to claim 1, characterized in that a water environment exists between the explosive device 3 and the pipe 2 and 4 to be composited; and two ends of a gap between the first pipe 1 to be compounded and the second pipe 2 to be compounded are sealed by sealing strips and vacuumized to form a vacuum gap environment.
4. The preparation method according to claim 3, wherein the thickness of the water environment can be set arbitrarily according to the actual requirement of the size of the pipe to be composited.
5. The preparation method according to claim 3, wherein the thickness of the vacuum gap environment is 0.6-2 times of that of the pipe to be compounded.
6. The method of claim 1, wherein the explosive device is comprised of a pvc pipe, a detonator, an explosive composite; the wall thickness of the explosion device is 5-27 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110690296.4A CN113333936A (en) | 2021-06-22 | 2021-06-22 | Method for preparing explosive cladding tube under local vacuum environment by using water pressure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110690296.4A CN113333936A (en) | 2021-06-22 | 2021-06-22 | Method for preparing explosive cladding tube under local vacuum environment by using water pressure |
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|---|---|
| CN113333936A true CN113333936A (en) | 2021-09-03 |
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| CN202110690296.4A Pending CN113333936A (en) | 2021-06-22 | 2021-06-22 | Method for preparing explosive cladding tube under local vacuum environment by using water pressure |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113618224A (en) * | 2021-09-06 | 2021-11-09 | 安徽理工大学 | Preparation method of efficient explosion composite pipe rod based on water pressure in local vacuum environment |
| CN114160950A (en) * | 2022-01-04 | 2022-03-11 | 安徽理工大学 | Method for preparing efficient explosion cladding pipe based on water pressure in local vacuum environment |
| CN114378419A (en) * | 2022-03-01 | 2022-04-22 | 安徽理工大学 | Efficient preparation method of explosion cladding tube in vacuum environment |
| CN114473172A (en) * | 2021-12-27 | 2022-05-13 | 安徽理工大学 | Method for preparing explosion composite pipe based on water pressure implosion method under local vacuum environment |
| CN114589389A (en) * | 2022-03-08 | 2022-06-07 | 中国人民解放军陆军装甲兵学院 | High wave impedance self-restraint explosion welding method and device for dissimilar metal composite pipe |
Citations (7)
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|---|---|---|---|---|
| FR1510704A (en) * | 1966-02-10 | 1968-01-19 | Du Pont | Explosive lining method of a metal tube with another metal tube |
| DE4030389C1 (en) * | 1990-09-26 | 1992-01-16 | Heinrich Dr. Moresnet Be Hampel | Composite material tube - mfd. by winding metal foil on steel core and joining outermost or innermost layers explosively |
| CN202780221U (en) * | 2012-05-14 | 2013-03-13 | 宝鸡市汇鑫金属复合材料有限公司 | Titanium copper composite tube outer bag explosive welding device |
| US20130087240A1 (en) * | 2009-10-30 | 2013-04-11 | Synex-Tube B.V. | Explosive Cladding Of At Least Two Metal Pipes Arranged Within Each Other |
| CN108372357A (en) * | 2018-02-26 | 2018-08-07 | 中国科学技术大学 | A kind of preparation method of the explosion clad pipe of high-energy utilization rate |
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2021
- 2021-06-22 CN CN202110690296.4A patent/CN113333936A/en active Pending
Patent Citations (8)
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| DE4030389C1 (en) * | 1990-09-26 | 1992-01-16 | Heinrich Dr. Moresnet Be Hampel | Composite material tube - mfd. by winding metal foil on steel core and joining outermost or innermost layers explosively |
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Non-Patent Citations (1)
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113618224A (en) * | 2021-09-06 | 2021-11-09 | 安徽理工大学 | Preparation method of efficient explosion composite pipe rod based on water pressure in local vacuum environment |
| CN114473172A (en) * | 2021-12-27 | 2022-05-13 | 安徽理工大学 | Method for preparing explosion composite pipe based on water pressure implosion method under local vacuum environment |
| CN114160950A (en) * | 2022-01-04 | 2022-03-11 | 安徽理工大学 | Method for preparing efficient explosion cladding pipe based on water pressure in local vacuum environment |
| CN114378419A (en) * | 2022-03-01 | 2022-04-22 | 安徽理工大学 | Efficient preparation method of explosion cladding tube in vacuum environment |
| CN114589389A (en) * | 2022-03-08 | 2022-06-07 | 中国人民解放军陆军装甲兵学院 | High wave impedance self-restraint explosion welding method and device for dissimilar metal composite pipe |
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