CN105013921B - A kind of magnetic pulse formation processing method of inner liner bimetal composite - Google Patents
A kind of magnetic pulse formation processing method of inner liner bimetal composite Download PDFInfo
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Abstract
A kind of magnetic pulse formation processing method of inner liner bimetal composite.The present invention relates to the magnetic pulse formation processing method of composite bimetal pipe processing method, more particularly to a kind of inner liner bimetal composite.The invention aims to solve the method for existing magnetic pulse formation composite bimetal pipe can not shape major diameter pipe it is compound the problem of.Method：First, the surface cleaning processing of pipe to be composite；2nd, the positioning of pipe to be composite and clamping；3rd, sub-step one is combined to process；4th, subsequently compound sub-step processing；5th, the processing of composite bimetal pipe.The manufacturing process of the present invention is the mechanical bond that inner and outer pipes are realized using the expanding bulging mode of light-wall pipe, and manufacturing process is simple, and combined strength bination is above the combined strength bination (about 0.2MPa) with like product up to 0.5MPa~13MPa compared with similar products.The manufacturing process of the present invention is applied to the preparation of inside bearing strip composite bimetal pipe.
Description
Technical field
The present invention relates to composite bimetal pipe processing method, more particularly to a kind of magnetic field impulse of inner liner bimetal composite into
Shape processing method.
Background technology
Multiple tube is also known as bimetal tube, also referred to as cage walls, and it is made up of the metal pipe material of two kinds of unlike materials, tube layer
Between realized by certain deformation or interconnection technique and combine closely and form integral laminar composite.With single metal tube phase
Than composite bimetal pipe has played the advantage of two kinds of metals, and it not only has required high intensity, while also having well
The premium properties such as anticorrosion, wear-resistant, so as to reach the purpose of " making the best use of everything ".
In recent years, both at home and abroad in feed-line of water-supply line, oil field, the feed-line in gas field and chemical enterprise etc. especially
It is that on the pipeline for convey Korrosionsmedium, large-scale popularization uses inner liner bimetal composite material.Inner liner bimetal composite is led to
Appropriate Combined Machining Technology is crossed by the anti-corrosive alloy material (such as stainless steel, aluminium alloy) of relatively thin wall thickness with having higher machine
The carbon steel base tube of tool intensity is complex as a whole, and both ensure that the corrosion resistant requirement of pipe material inner wall, has been greatly reduced again corrosion-resistant
The consumption of alloy material, can meet the requirement of different working conditions, extend the service life of pipe fitting, thus with well comprehensive
Economic benefit is closed, there is the very strong market competitiveness.
Different according to inner liner bimetal composite interface fine structure, processing and manufacturing inner liner bimetal composite is big both at home and abroad
Cause can be divided into following two major class：One class is metallurgical compound, includes centrifugal casting, welding cladding, multi-blank extruding and explodes
It is compound；It is another kind of to be combined for machinery, such as spinning, mechanical pull, hydro-joining.Metallurgical compound technology need to use special equipment,
Complex procedures, the control to composite quality requires high.If without special working condition requirement (such as hot environment), using machinery
With reference to liner bimetallic compound can meet use requirement.The interlayer combined strength bination of mechanical bond type inner liner bimetal composite
Size is an important technology index for judging inner liner bimetal composite performance.Due to liner corrosion resisting alloy pipe and base tube
All the time there is the effect of residual contact stress in contact surface, thus can improve the overall mechanical performance of inner liner bimetal composite.
However, the interlayer combined strength bination that the mechanical complex method preparation inner liner bimetal composite used at present reaches is generally relatively low.This
Outside, when carrying out multiple tube processing using modes such as mechanical pull, spinning, due to being Mechanical Contact, forming tool is inevitable
Tube surfaces can be produced with a certain degree of damage, it is compound to liner bimetallic that prepared multiple tube can not meet some industries
The requirement of the performance, precision of pipe；And when using fluid power load mode processing inner liner bimetal composite, then exist and equipment is sealed
It is required that the problems such as height, low production efficiency.The deficiency of existing manufacture inner liner bimetal composite, is limited interior to a certain extent
The popularization and application of composite bimetal pipe in the industry are served as a contrast, hence it is imperative that exploitation NEW TYPE OF COMPOSITE process technology.
Electro-magnetic forming is a kind of Metal Forming technology of the eighties of last century rise sixties, because it has workpiece deformation speed
The advantage such as rate is fast, efficiency high, composite quality are good, is applied to the connection and assembling of pipe fitting (or sheet material), it has also become Yi Zhongqian
The huge dissimilar metal of power is combined and welding method.But the capacity usage ratio of electro-magnetic forming equipment is relatively low, at present also far from full
The need for sufficient large-sized structural parts, therefore, electromagnetism interconnection technique is only applied in terms of dissimilar metal pipe fitting joint connection at present.
It is existing Application No. 201210239093.4, entitled《The magnetic pulse formation device of composite bimetal pipe and
Method》, it discloses a kind of method of utilization magnetic pulse formation composite bimetal pipe, and specifically discloses the magnetic by collecting chinaware
Inside and outside pipe to be composite is formed line of force circle, and outsourcing has been reached this process employs the undergauge of thin-walled outer tube plastic deformation
Prepared by the magnetic pulse formation for covering type composite bimetal pipe, however, this method is limited to the general principle that necking deformation occurs for outer tube
And the geometry of collection chinaware, it is only applicable to the preparation of outer cladding type bimetal tube, it is impossible to shapes inside bearing strip bimetallic and is combined
Pipe.
The content of the invention
Large diameter pipe can not be shaped the invention aims to the method for solving existing magnetic pulse formation composite bimetal pipe
Base it is compound the problem of, and provide a kind of magnetic pulse formation processing method of inner liner bimetal composite.
A kind of magnetic pulse formation processing method of inner liner bimetal composite of the present invention is carried out according to the following steps：
First, the surface cleaning processing of pipe to be composite：With inner surface and to be composite liner of the acetone to outer tube to be composite
The outer surface of pipe is cleared up, and to remove the pollutant of outer pipe internal surface to be composite and liner tube outer surface to be composite, is obtained
The internal lining pipe to be composite after outer tube to be composite and cleaning after cleaning；
2nd, the positioning of pipe to be composite and clamping：Outer tube to be composite after the cleaning first obtained with alcohol wipe step one
Inner surface and cleaning after internal lining pipe to be composite outer surface, then outer tube to be composite and internal lining pipe to be composite are put with one heart
Put, fill the tube wall gap at outer tube to be composite and internal lining pipe two ends to be composite with insulating materials sleeve pipe with ensure outer tube to be composite and
Internal lining pipe to be composite is coaxial, the pipe to be composite after being positioned, the pipe to be composite for then inserting form-wound coil after positioning,
Form-wound coil is fixed on workbench again, positioning and the clamping of pipe to be composite is completed；
3rd, sub-step one is combined to process：Setting discharge voltage is 10kV, and the first of pipe to be composite is realized by form-wound coil
Combined shaping processing is walked, the pipe to be composite after the processing of first step combined shaping is obtained；
4th, subsequently compound sub-step processing：Keep form-wound coil constant in the position of workbench, first that step 3 is obtained
Pipe to be composite after step combined shaping processing is moved in the way of gradual feeding along the axially opposing form-wound coil of form-wound coil
Dynamic, the amount of feeding is the 50% of form-wound coil operation interval effective length, the not deformed area of pipe to be composite is entered form-wound coil
Operation interval, setting discharge voltage is 10kV, implements subsequently compound sub-step processing；
5th, the processing of composite bimetal pipe：The operation of repeat step four, until the bimetallic of length needed for obtaining is combined
Pipe；
Outer tube to be composite described in step one is carbon steel pipe；
Internal lining pipe to be composite described in step one is aluminium-alloy pipe；
The effective length of form-wound coil operation interval described in step 2 is 115mm；
The amount of feeding described in step 4 is 57.5mm.
Beneficial effects of the present invention
Operation principle：Electromagnetic forming machine discharges the pulse current for vibrating and decaying by actuating coil, and electric current is in coil week
Enclose excitation pulse high-intensity magnetic field and then pipe surface is produced induced-current, it can be seen from Lenz's law, the magnetic line of force is constrained on pipe
In gap between base and coil.Due to the magnetic line of force have expansion characteristic, tube blank inner wall by the huge magnetic field force of amplitude (see
Fig. 1), the magnetic field force driving inner tube occur plastic deformation and high-speed motion, inner tube in ligament always be accelerated until with it is outer
Pipe collides, and is closely linked with outer tube, so that compound between realizing tube layer, manufacturing process of the invention is to utilize
The expanding bulging mode of light-wall pipe realizes the mechanical bond of inner and outer pipes, and manufacturing process of the invention is multiple suitable for inside bearing strip bimetallic
Close the preparation of pipe.
Compared with other existing techniques, the beneficial effect that magnetic pulse formation process technology proposed by the present invention is reached
Have：
1st, it is a kind of green manufacture technology, process is without ecological pollution；
2nd, manufacturing process is simple, and machining energy is easy to accurate control, high in machining efficiency, workable；
3rd, impulsive force reduces the friction effect of forming process without putting on pipe by power transmission medium, and liner is closed
Golden tubing does not result in the destruction and influence of anti-corrosion layer performance；
4th, combined strength bination, up to 0.5MPa~13MPa, is above the combined strength bination with like product compared with similar products
(about 0.2MPa).Performance is more stable reliable, can be to combined strength bination in the range of product standard according to the requirement of performance
Size makees appropriate adjustment, meets the different demands of client.
Brief description of the drawings
Fig. 1 is a kind of magnetic pulse formation processing method initial stressed schematic diagram of inner liner bimetal composite of the present invention；
Wherein 1 is internal lining pipe, and 2 be form-wound coil, and 3 be outer tube, and 4 be electromagnetic force, and 5 be electromagnetic forming machine；
Fig. 2 added Principle of Process figure for a kind of magnetic pulse formation processing method of inner liner bimetal composite of the present invention；
Wherein 1 is internal lining pipe, and 2 be form-wound coil, and 3 be outer tube, and 4 be electromagnetic force, and 5 be electromagnetic forming machine, and 6 be pipe feeding side to be composite
To.
Embodiment
Embodiment one：A kind of magnetic pulse formation processing method of inner liner bimetal composite of present embodiment is pressed
Following steps are carried out：
First, the surface cleaning processing of pipe to be composite：With inner surface and to be composite liner of the acetone to outer tube to be composite
The outer surface of pipe is cleared up, and to remove the pollutant of outer pipe internal surface to be composite and liner tube outer surface to be composite, is obtained
The internal lining pipe to be composite after outer tube to be composite and cleaning after cleaning；
2nd, the positioning of pipe to be composite and clamping：Outer tube to be composite after the cleaning first obtained with alcohol wipe step one
Inner surface and cleaning after internal lining pipe to be composite outer surface, then outer tube to be composite and internal lining pipe to be composite are put with one heart
Put, fill the tube wall gap at outer tube to be composite and internal lining pipe two ends to be composite with insulating materials sleeve pipe with ensure outer tube to be composite and
Internal lining pipe to be composite is coaxial, the pipe to be composite after being positioned, the pipe to be composite for then inserting form-wound coil after positioning,
Form-wound coil is fixed on workbench again, positioning and the clamping of pipe to be composite is completed；
3rd, sub-step one is combined to process：Setting discharge voltage is 9.5kV~12kV, and pipe to be composite is realized by form-wound coil
The first step combined shaping processing of base, obtains the pipe to be composite after the processing of first step combined shaping；
4th, subsequently compound sub-step processing：Keep form-wound coil constant in the position of workbench, first that step 3 is obtained
Pipe to be composite after step combined shaping processing is moved in the way of gradual feeding along the axially opposing form-wound coil of form-wound coil
Dynamic, the amount of feeding is the 50% of form-wound coil operation interval effective length, the not deformed area of pipe to be composite is entered form-wound coil
Operation interval, setting discharge voltage is 9.5kV~12kV, implements subsequently compound sub-step processing；
5th, the processing of composite bimetal pipe：The operation of repeat step four, until the bimetallic of length needed for obtaining is combined
Pipe.
Operation principle：Electromagnetic forming machine discharges the pulse current for vibrating and decaying by actuating coil, and electric current is in coil week
Enclose excitation pulse high-intensity magnetic field and then pipe surface is produced induced-current, it can be seen from Lenz's law, the magnetic line of force is constrained on pipe
In gap between base and coil.Due to the magnetic line of force have expansion characteristic, tube blank inner wall by the huge magnetic field force of amplitude (see
Fig. 1), the magnetic field force driving inner tube occur plastic deformation and high-speed motion, inner tube in ligament always be accelerated until with it is outer
Pipe collides, and is closely linked with outer tube, so that compound between realizing tube layer, manufacturing process of the invention is to utilize
The expanding bulging mode of light-wall pipe realizes the mechanical bond of inner and outer pipes, and manufacturing process of the invention is multiple suitable for inside bearing strip bimetallic
Close the preparation of pipe.
Compared with other existing techniques, the beneficial effect that the magnetic pulse formation process technology that present embodiment is proposed is reached
Fruit has：
1st, it is a kind of green manufacture technology, process is without ecological pollution；
2nd, manufacturing process is simple, and machining energy is easy to accurate control, high in machining efficiency, workable；
3rd, impulsive force reduces the friction effect of forming process without putting on pipe by power transmission medium, and liner is closed
Golden tubing does not result in the destruction and influence of anti-corrosion layer performance；
4th, combined strength bination, up to 0.5MPa~13MPa, is above the combined strength bination with like product compared with similar products
(about 0.2MPa).Performance is more stable reliable, can be to combined strength bination in the range of product standard according to the requirement of performance
Size makees appropriate adjustment, meets the different demands of client.
Embodiment two：Present embodiment from unlike embodiment one：Treating described in step one is multiple
Conjunction outer tube is carbon steel pipe.Other steps and parameter are identical with embodiment one.
Embodiment three：Present embodiment from unlike embodiment one or two：Described in step one
Internal lining pipe to be composite is aluminum pipe.Other steps and parameter are identical with embodiment one or two.
Embodiment four：Unlike one of present embodiment and embodiment one to three：Institute in step one
The acetone purity stated is 99.9%.Other steps and parameter are identical with one of embodiment one to three.
Embodiment five：Unlike one of present embodiment and embodiment one to four：Institute in step 2
The insulating materials sleeve pipe stated is nylon sleeve.Other steps and parameter are identical with one of embodiment one to four.
Embodiment six：Unlike one of present embodiment and embodiment one to five：Institute in step 2
The form-wound coil stated is by square-section copper conductor coiling.Other steps and parameter are identical with one of embodiment one to five.
Embodiment seven：Unlike one of present embodiment and embodiment one to six：Institute in step 2
The common circle of coiling 10~30 of copper conductor on the form-wound coil stated.One of other steps and parameter and embodiment one to six phase
Together.
Embodiment eight：Unlike one of present embodiment and embodiment one to seven：Institute in step 2
The common circle of coiling 23 of copper conductor on the form-wound coil stated.Other steps and parameter are identical with one of embodiment one to seven.
Embodiment nine：Unlike one of present embodiment and embodiment one to eight：Institute in step 3
The setting discharge voltage stated is 10kV.Other steps and parameter are identical with one of embodiment one to eight.
Embodiment ten：Unlike one of present embodiment and embodiment one to nine：Institute in step 4
The setting discharge voltage stated is 10kV.Other steps and parameter are identical with one of embodiment one to nine.
Beneficial effects of the present invention are verified with tests below
Experiment one, a kind of magnetic pulse formation processing method of inner liner bimetal composite are carried out according to the following steps：
First, the surface cleaning processing of pipe to be composite：With inner surface and to be composite liner of the acetone to outer tube to be composite
The outer surface of pipe is cleared up, and to remove the pollutant of outer pipe internal surface to be composite and liner tube outer surface to be composite, is obtained
The internal lining pipe to be composite after outer tube to be composite and cleaning after cleaning；
2nd, the positioning of pipe to be composite and clamping：Outer tube to be composite after the cleaning first obtained with alcohol wipe step one
Inner surface and cleaning after internal lining pipe to be composite outer surface, then outer tube to be composite and internal lining pipe to be composite are put with one heart
Put, fill the tube wall gap at outer tube to be composite and internal lining pipe two ends to be composite with nylon sleeve to ensure outer tube to be composite and treat multiple
Close internal lining pipe coaxial, the pipe to be composite after being positioned, the pipe to be composite for then inserting form-wound coil after positioning, then will
Form-wound coil is fixed on workbench, completes positioning and the clamping of pipe to be composite；
3rd, sub-step one is combined to process：Setting discharge voltage is 10kV, and the first of pipe to be composite is realized by form-wound coil
Combined shaping processing is walked, the pipe to be composite after the processing of first step combined shaping is obtained；
4th, subsequently compound sub-step processing：Keep form-wound coil constant in the position of workbench, first that step 3 is obtained
Pipe to be composite after step combined shaping processing is moved in the way of gradual feeding along the axially opposing form-wound coil of form-wound coil
Dynamic, the amount of feeding is the 50% of form-wound coil operation interval effective length, the not deformed area of pipe to be composite is entered form-wound coil
Operation interval, setting discharge voltage is 10kV, implements subsequently compound sub-step processing；
5th, the processing of composite bimetal pipe：The operation of repeat step four, until the bimetallic of length needed for obtaining is combined
Pipe.
Outer tube to be composite described in step one is 20# steel.
Internal lining pipe to be composite described in step one is 3A21 aluminium-alloy pipes.
Acetone purity described in step one is 99.9%.
Form-wound coil described in step 2 by 3mm × 5mm square-section copper conductor coiling.
The common circle of coiling 23 of copper conductor on form-wound coil described in step 2.
The effective length of form-wound coil operation interval described in step 2 is 115mm.
The amount of feeding described in step 4 is 57.5mm.
Claims (6)
1. a kind of a kind of magnetic pulse formation processing method of inner liner bimetal composite, it is characterised in that inner liner bimetal composite
Magnetic pulse formation processing method carry out according to the following steps：
First, the surface cleaning processing of pipe to be composite：With acetone to the inner surface of outer tube to be composite and internal lining pipe to be composite
Outer surface is cleared up, and to remove the pollutant of outer pipe internal surface to be composite and liner tube outer surface to be composite, is cleared up
Outer tube to be composite afterwards and the internal lining pipe to be composite after cleaning；
2nd, the positioning of pipe to be composite and clamping：In outer tube to be composite after the cleaning first obtained with alcohol wipe step one
The outer surface of internal lining pipe to be composite behind surface and cleaning, then places outer tube to be composite and internal lining pipe to be composite with one heart, uses
Insulating materials sleeve pipe fills the tube wall gap at outer tube to be composite and internal lining pipe two ends to be composite to ensure outer tube to be composite and treat multiple
Close internal lining pipe coaxial, the pipe to be composite after being positioned, the pipe to be composite for then inserting form-wound coil after positioning, then will
Form-wound coil is fixed on workbench, completes positioning and the clamping of pipe to be composite；
3rd, sub-step one is combined to process：Setting discharge voltage is 10kV, and the first step for realizing pipe to be composite by form-wound coil is answered
Forming is closed, the pipe to be composite after the processing of first step combined shaping is obtained；
4th, subsequently compound sub-step processing：Keep form-wound coil constant in the position of workbench, the first step that step 3 is obtained is answered
Close the pipe to be composite after forming to move along the axially opposing form-wound coil of form-wound coil in the way of gradual feeding, enter
It is the 50% of form-wound coil operation interval effective length to amount, the not deformed area of pipe to be composite is entered the workspace of form-wound coil
Between, setting discharge voltage is 10kV, implements subsequently compound sub-step processing；
5th, the processing of composite bimetal pipe：The operation of repeat step four, until the composite bimetal pipe of length needed for obtaining；
Outer tube to be composite described in step one is carbon steel pipe；
Internal lining pipe to be composite described in step one is aluminium-alloy pipe；
The effective length of form-wound coil operation interval described in step 2 is 115mm；
The amount of feeding described in step 4 is 57.5mm.
2. a kind of magnetic pulse formation processing method of inner liner bimetal composite according to claim 1, it is characterised in that
Acetone purity described in step one is 99.9%.
3. a kind of magnetic pulse formation processing method of inner liner bimetal composite according to claim 1, it is characterised in that
Insulating materials sleeve pipe described in step 2 is nylon sleeve.
4. a kind of magnetic pulse formation processing method of inner liner bimetal composite according to claim 1, it is characterised in that
Form-wound coil described in step 2 is by square-section copper conductor coiling.
5. a kind of magnetic pulse formation processing method of inner liner bimetal composite according to claim 1, it is characterised in that
The common circle of coiling 10~30 of copper conductor on form-wound coil described in step 2.
6. a kind of magnetic pulse formation processing method of inner liner bimetal composite according to claim 1, it is characterised in that
The common circle of coiling 23 of copper conductor on form-wound coil described in step 2.
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| CN106694681B (en) * | 2017-03-06 | 2019-03-05 | 华中科技大学 | A kind of electromagnetic forming device and method of metal tube |
| CN107096989B (en) * | 2017-06-05 | 2023-02-07 | 三峡大学 | Bidirectional loading type pipe fitting electromagnetic welding method and device |
| CN107900507A (en) * | 2017-11-14 | 2018-04-13 | 哈尔滨工业大学 | The pulse current prosthetic device and method of micro-crack in a kind of metal tube |
| CN112872161B (en) * | 2021-01-11 | 2022-09-02 | 中国工程物理研究院机械制造工艺研究所 | Electromagnetic forming method of steel-lead composite pipe |
| CN113814309B (en) * | 2021-09-23 | 2022-06-17 | 重庆大学 | Magnetic pulse forming device suitable for high-strength thick pipe fitting |
| CN113664360B (en) * | 2021-10-22 | 2022-02-08 | 湖南大学 | Magnetic pulse connecting device and method for double-layer circular tube and eddy current damper |
| CN114226537B (en) * | 2021-12-15 | 2024-05-17 | 哈尔滨工业大学 | Progressive magnetic pulse forming method and device for thin-wall metal annular shell |
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| JP2989033B2 (en) * | 1991-05-30 | 1999-12-13 | 昭和アルミニウム株式会社 | Electromagnetic joining method between aluminum materials having tubular joints |
| EP0868233B1 (en) * | 1995-12-20 | 2002-04-17 | Pulsar Welding Ltd | Electromagnetic joining or welding of metal objects |
| US7181846B2 (en) * | 2004-07-08 | 2007-02-27 | Torque-Traction Technologies, Inc. | Method of manufacturing a combined driveshaft tube and yoke assembly |
| CN102744310B (en) * | 2012-07-11 | 2014-10-08 | 哈尔滨工业大学 | Magnetic pulse forming device and method of bimetal composite pipe |
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