CN109821925A - A kind of production technology of composite pipe - Google Patents
A kind of production technology of composite pipe Download PDFInfo
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- CN109821925A CN109821925A CN201910085269.7A CN201910085269A CN109821925A CN 109821925 A CN109821925 A CN 109821925A CN 201910085269 A CN201910085269 A CN 201910085269A CN 109821925 A CN109821925 A CN 109821925A
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Abstract
The invention discloses a kind of production technologies of composite pipe, belong to composite pipe production field, a kind of production technology of composite pipe, increase the intensity of outer skeleton aluminum pipe by adding copper layer between extraneous framework aluminum pipe and liner PE pipe, increase the intensity and impact resistance of aluminum alloy lining plastic composite pipe, again by handling the inside and outside wall frosted of the inner wall of outer skeleton aluminum pipe and transition zone copper pipe, outer skeleton aluminum pipe inner wall and transition zone copper pipe inside and outside wall is set to become coarse, make between outer skeleton aluminum pipe and transition zone copper pipe and transition zone copper pipe and liner PE pipe compound becomes easy, after swaging, composite pipe generates, and the stiffener rings of PE pipe surface will increase the Compound Degree between PE pipe and transition zone copper pipe, PE is managed to be not readily separated between transition zone copper pipe, it finally again will be after the surface polishing of outer skeleton aluminum pipe, It is reoxidized, continuous dense oxidation film is generated, the corrosion resistance of composite pipe is increased.
Description
Technical field
The present invention relates to composite pipe production fields, more specifically to a kind of production technology of composite pipe.
Background technique
Composite pipe is the tubing based on metal and thermoplastic composite construction, lining plastic polypropylene, polyethylene
Or the molding of the nonmetallic materials such as external welding crosslinked polyethylene, have the advantages that metal pipe material and non-metal pipe.
Composite pipe is actually that two or more different tubing is forged using the method (cold rolling is swaged) of physics
It makes together, and the composite pipe at manufacture often has the advantages that possessed by two or more tubing of script,
Such as aluminum alloy lining plastic composite pipe, aluminum alloy lining plastic composite pipe outer tube is aluminium-alloy pipe, and inner tube is thermoplastic pipes, and outer layer aluminium closes
Gold not only plays resistance oxygen, more important is playing structural bearing, suitable for life hot water pipe, be divided into cold and hot point with it is cold
Heat is universal.
However the metal that aluminium is partially soft as a kind of quality, in addition to be partially added to the intensity of aluminum alloy of the rare metals such as titanium compared with
It is high outer, it is relatively low for the hardness and strength of aluminium alloy are universal, and the aluminium alloy cost for being added to the rare metals such as titanium is higher,
Often apply in the high leading-edge field such as aerospace, and the people be difficult to consume the addition to involve great expense in daily life it is dilute
There is the aluminium alloy pipe of metal.
Existing aluminum alloy lining plastic composite pipe satisfactorily can complete specified task under the working environment of design, but work as
Aluminum alloy lining plastic composite pipe is multiple to aluminium alloy lining plastic when encountering special circumstances, such as by biggish external carbuncle or water hammer factor
When the inner tube or outer tube for closing pipe cause biggish impact, since the aluminium-alloy pipe intensity and hardness of outer layer are lower, it is unable to complete guarantor
The protecting the plastic tube of inner city of the task, causes aluminum alloy lining plastic composite pipe to be broken, and aluminum alloy lining plastic composite pipe is caused to convey
Liquid or gas leakage, influence the normal use of aluminum alloy lining plastic composite pipe.
Summary of the invention
1. technical problems to be solved
Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a kind of production technology of composite pipe,
The resistance to compression impact resistance of enhancing aluminum alloy lining plastic composite pipe outer layer aluminium alloy may be implemented in it, is not easy outer layer aluminium-alloy pipe
Biggish deformation occurs under the action of ambient pressure even to rupture, the protective capability of outer layer aluminium alloy is significantly increased.
2. technical solution
To solve the above problems, the present invention adopts the following technical scheme that.
A kind of production technology of composite pipe, including following preparation process:
S1, tube forming manufacture aluminum pipe, copper pipe and the PE pipe of design diameter, and wherein aluminum pipe and copper pipe are using continuously
Formula Tube Rolling Train is manufactured, and PE pipe is produced by the way of cold drawing cold-drawn；
S2, frosted processing, carry out frosted processing for the inside and outside wall of the aluminum pipe inner wall and copper pipe that have manufactured respectively, make aluminum pipe
The inside and outside wall of inner wall and copper pipe becomes more coarse surface；
Aluminum pipe, copper pipe and PE pipe by frosted processing is put into ultrasonic cleaning pond by S3, ultrasonic cleaning together,
It is respectively washed the impurity adhered on the inside and outside wall of aluminum pipe, copper pipe and PE pipe, the inside and outside wall of aluminum pipe, copper pipe and PE pipe is made to keep clean
Only；
PE pipe is inserted in copper pipe by S4, casing, then copper pipe and PE pipe are inserted in aluminum pipe together, then is inserted into PE pipe
Liner bar, while aluminum pipe and liner bar being fixed；
S5, swage, aluminum pipe, copper pipe and PE pipe swaged using swager, make aluminum pipe and copper pipe is compound and copper pipe and
PE pipe is compound, makes to form the more close tubing of connection between aluminum pipe, copper pipe and PE pipe；
S6, surface polishing will be processed by shot blasting, by the oxide layer of aluminum tube surfaces by the outer wall surface for the aluminum pipe swaged
After polishing off, then aluminum tube surfaces are polished smooth；
Composite pipe Jing Guo surface polishing is put into low-temperature oxidation furnace, is passed through oxygen, makes aluminum pipe table by S7, oxidation processes
Face oxidation, forms fine and close oxidation film；
S8, package insulating layer pass through nylon in the foam-rubber cushion of the outside of aluminum pipe package heat preservation between insulating layer and aluminum pipe
Note is fixedly connected；
The aluminum alloy lining plastic composite pipe for having wrapped up insulating layer is carried out packing and binding, then aluminium alloy is served as a contrast by S9, packing and binding
Plastic composite is transported to stores keeping or directly factory transport.
The resistance to compression impact resistance that enhancing aluminum alloy lining plastic composite pipe outer layer aluminium alloy may be implemented, makes outer layer aluminium-alloy pipe
It is not easy that biggish deformation even rupture occurs under the action of ambient pressure, the protective capability of outer layer aluminium alloy is significantly increased.
Further, in the S1 tube forming, what the internal diameter of aluminum pipe and the outer diameter of copper pipe matched, the outer diameter of PE pipe
Facilitate the subsequent casing work of staff less than the internal diameter of copper pipe.
Further, sand-blast can be used in frosted processing in the S2 frosted processing or shot-peening method is handled, sand-blast
It can use special sandblasting with shot-peening method or blasting machinery realized, the working strength of staff is greatly lowered, improves mill
The working efficiency of sand.
Further, in the S3 ultrasonic cleaning, after ultrasonic cleaning, by what is taken out in ultrasonic cleaning pond
Aluminum pipe, copper pipe and the drying of PE pipe, make the inside and outside wall of aluminum pipe, copper pipe and PE pipe keep dried and clean, aluminum pipe, copper pipe and PE pipe are made to exist
During being swaged, aluminum pipe and copper pipe, the contact surface between copper pipe and PE pipe are less prone to moisture or other impurities, make
Aluminum pipe and copper pipe are not easy to corrode.
Further, in the S4 casing, the length of the aluminum pipe need to be longer than copper pipe, make after swaging, aluminum pipe can
Completely to wrap copper pipe, aluminum pipe is allow more comprehensively to protect copper pipe, copper pipe is made to be not easy directly to contact with outside air,
Make copper pipe be not easy to corrode, is not easy to influence the intensity of copper pipe.
Further, in the S4 casing, the liner bar is divided into PE pipe liner bar, in aluminium-alloy pipe from left to right
Serve as a contrast bar and liner bar interconnecting piece, and the internal diameter of the outer diameter of PE pipe internal lining pipe and PE pipe matches, the outer diameter of aluminium alloy lining bar
Match with the outer diameter of PE pipe, the aluminum pipe after liner bar interconnecting piece and compacting matches, and internal lining pipe, liner bar is in aluminum pipe, copper pipe
It is not easy directly to be swaged during being swaged with PE pipe to hammer be collapsed into shape, is not easy to generate excessive waste product in rotary swaging process.
Further, during the S5 swages, two can be repeated to aluminum pipe, copper pipe and PE pipe to swaging three times, passed through
It repeatedly swages and shaping is carried out to aluminum pipe, copper pipe and PE pipe, aluminum pipe, copper pipe and PE pipe is made to reach design requirement.
Further, in the S7 oxidation processes, the temperature of low-temperature oxidation furnace in normal work is 100 degrees Celsius of left sides
The right side, and low-temperature oxidation furnace air need to maintain the circulation of air, and need continuously to be filled with oxygen into low-temperature oxidation furnace, make aluminium
Fine and close oxidation film is formed on the outer wall of pipe, protects aluminum pipe, aluminum pipe is made to be not easy to corrode in the environment.
Further, the surface of the PE pipe is connected with multiturn stiffener rings, and the stiffener rings are dug far from one end of PE pipe
There is chamfering, the stiffener rings of the surface connection of the PE pipe can increase the intensity of PE pipe, and chamfering is dug in stiffener rings, Ke Yi
Copper pipe is easy to fit on the surface of PE pipe during aluminum pipe, copper pipe and PE pipe are swaged, copper pipe and PE pipe it is compound during
It causes stiffener rings to crumble, influences normal use effect fruit of stiffener rings
Further, the stiffener rings select high-intensitive steel alloy, and the intensity of stiffener rings and hardness are much larger than copper
Pipe, makes aluminum pipe, copper pipe and PE pipe during swaging, stiffener rings are not easy to be damaged by copper pipe, and stiffener rings is made to be easy to keep enhancing
Function, and after swaging process, stiffener rings can make to be not readily separated between aluminum pipe and copper pipe.
3. beneficial effect
Compared with the prior art, the present invention has the advantages that
(1) the resistance to compression impact resistance of enhancing aluminum alloy lining plastic composite pipe outer layer aluminium alloy may be implemented in this programme, makes outer
Layer aluminium-alloy pipe is not easy that biggish deformation even rupture occurs under the action of ambient pressure, and the guarantor of outer layer aluminium alloy is significantly increased
Shield ability.
(2) in S1 tube forming, what the internal diameter of aluminum pipe and the outer diameter of copper pipe matched, the outer diameter of PE pipe is less than copper pipe
Internal diameter facilitates the subsequent casing work of staff.
(3) sand-blast can be used in frosted processing in S2 frosted processing or shot-peening method is handled, sand-blast and shot-peening method
It can use special sandblasting or blasting machinery realized, the working strength of staff is greatly lowered, improves the work of frosted
Efficiency.
(4) in S3 ultrasonic cleaning, after ultrasonic cleaning, the aluminum pipe, the copper that will be taken out in ultrasonic cleaning pond
Pipe and the drying of PE pipe, make the inside and outside wall of aluminum pipe, copper pipe and PE pipe keep dried and clean, are revolving aluminum pipe, copper pipe and PE pipe
During forging, aluminum pipe and copper pipe, the contact surface between copper pipe and PE pipe are less prone to moisture or other impurities, make aluminum pipe and copper
Pipe is not easy to corrode.
(5) in S4 casing, the length of aluminum pipe need to be longer than copper pipe, make after swaging, and aluminum pipe can be wrapped up completely
Firmly copper pipe allows aluminum pipe more comprehensively to protect copper pipe, makes copper pipe be not easy directly to contact with outside air, keeps copper pipe not easy rusting
Erosion, is not easy to influence the intensity of copper pipe.
(6) in S4 casing, liner bar is divided into PE pipe liner bar, aluminium-alloy pipe liner bar and liner bar from left to right
Interconnecting piece, and the internal diameter of the outer diameter of PE pipe internal lining pipe and PE pipe matches, the outer diameter of aluminium alloy lining bar and the outer diameter of PE pipe
Match, the aluminum pipe after liner bar interconnecting piece and compacting matches, and internal lining pipe, liner bar is revolved in aluminum pipe, copper pipe and PE pipe
It is not easy directly to be swaged during forging to hammer be collapsed into shape, is not easy to generate excessive waste product in rotary swaging process.
(7) in S5 swages, two can be repeated to aluminum pipe, copper pipe and PE pipe to swaging three times, by repeatedly swaging
Shaping is carried out to aluminum pipe, copper pipe and PE pipe, aluminum pipe, copper pipe and PE pipe is made to reach design requirement.
(8) in S7 oxidation processes, the temperature of low-temperature oxidation furnace in normal work is 100 degrees centigrades, and low temperature
Oxidation furnace air need to maintain the circulation of air, and need continuously to be filled with oxygen into low-temperature oxidation furnace, make the outer wall of aluminum pipe
It is upper to form fine and close oxidation film, aluminum pipe is protected, aluminum pipe is made to be not easy to corrode in the environment.
(9) surface of PE pipe is connected with multiturn stiffener rings, and stiffener rings are dug far from one end of PE pipe chamfering, the table of PE pipe
The stiffener rings of face connection can increase the intensity of PE pipe, and chamfering is dug in stiffener rings, can swage in aluminum pipe, copper pipe and PE pipe
During copper pipe be easy to fit on the surface of PE pipe, copper pipe and PE pipe it is compound during cause stiffener rings to crumble, influence
Normal use effect fruit of stiffener rings.
(10) stiffener rings select high-intensitive steel alloy, and the intensity of stiffener rings and hardness are much larger than copper pipe, make aluminum pipe,
During swaging, stiffener rings are not easy to be damaged by copper pipe for copper pipe and PE pipe, the function of making stiffener rings be easy to keep enhancing, and
After process of swaging, stiffener rings can make to be not readily separated between aluminum pipe and copper pipe.
Detailed description of the invention
Fig. 1 is technical process block diagram of the invention；
Fig. 2 is the front section view at hammer of swaging in rotary swaging process of the present invention；
Fig. 3 is the front view of PE pipe of the invention.
Figure label explanation:
1 aluminum pipe, 2 copper pipes, 3PE pipe, semi-finals ring, 5 liner bars, 6 are swaged hammer.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention；Technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description；Obviously；Described embodiments are only a part of the embodiments of the present invention；Instead of all the embodiments, it is based on
Embodiment in the present invention；It is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment；It shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the instruction such as term " on ", "lower", "inner", "outside", " top/bottom end "
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention and simplification retouch
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,
Therefore it is not considered as limiting the invention.In addition, term " first ", " second " are used for description purposes only, and cannot understand
For indication or suggestion relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation " " is set
Be equipped with ", " be arranged/connect ", " connection " etc., shall be understood in a broad sense, such as " connection ", may be a fixed connection, be also possible to removable
Connection is unloaded, or is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be in
Between medium be indirectly connected, can be the connection inside two elements.It for the ordinary skill in the art, can be specific
Situation understands the concrete meaning of above-mentioned term in the present invention.
Embodiment 1:
Referring to FIG. 1-2, include following preparation process:
S1, tube forming manufacture the aluminum pipe 1, copper pipe 2 and PE pipe 3 of design diameter, and wherein aluminum pipe 1 and copper pipe 2 utilize
Mandrel mill group is manufactured, and PE pipe 3 is produced by the way of cold drawing cold-drawn, wherein the internal diameter of aluminum pipe 1 and copper pipe 2
What outer diameter matched, the internal diameter that the outer diameter of PE pipe 3 is less than copper pipe 2 facilitates the subsequent casing work of staff；
S2, frosted processing, carry out frosted processing for the inside and outside wall of 1 inner wall of aluminum pipe and copper pipe 2 that have manufactured respectively, make aluminum pipe
1 inner wall and the inside and outside wall of copper pipe 2 become more coarse surface, and rough surface is conducive to carry out between aluminum pipe 1 and copper pipe 2
It is compound, and sand-blast can be used for frosted processing or shot-peening method is handled, sand-blast and shot-peening method can use special sandblasting
Or blasting machinery is realized, the working strength of staff is greatly lowered, improves the working efficiency of frosted,
S3, ultrasonic cleaning will be put into together ultrasonic cleaning pond by aluminum pipe 1, copper pipe 2 and the PE pipe 3 of frosted processing
It is interior, it is respectively washed the impurity adhered on the inside and outside wall of aluminum pipe 1, copper pipe 2 and PE pipe 3, makes the inside and outside of aluminum pipe 1, copper pipe 2 and PE pipe 3
Wall keeps clean, after ultrasonic cleaning, the aluminum pipe 1, copper pipe 2 and PE pipe 3 that take out in ultrasonic cleaning pond is dried, made
The inside and outside wall of aluminum pipe 1, copper pipe 2 and PE pipe 3 keeps dried and clean, makes aluminum pipe 1, copper pipe 2 and PE pipe 3 in the process swaged
In, aluminum pipe 1 and copper pipe 2, the contact surface between copper pipe 2 and PE pipe 3 are less prone to moisture or other impurities, make aluminum pipe 1 and copper pipe 2
It is not easy to corrode；
PE pipe 3 is inserted in copper pipe 2 by S4, casing, then copper pipe 2 and PE pipe 3 are inserted in together in aluminum pipe 1, then to PE pipe 3
Interior insertion liner bar 5, at the same aluminum pipe 1 and liner bar 5 is fixed；
S5, swage, aluminum pipe 1, copper pipe 2 and PE pipe 3 swaged using swager, make aluminum pipe 1 and copper pipe 2 it is compound and
Copper pipe 2 and PE pipe 3 is compound, makes to form the more close tubing of connection between aluminum pipe 1, copper pipe 2 and PE pipe 3, the length of aluminum pipe 1 needs
It is longer than copper pipe 2, makes after swaging, aluminum pipe 1 can completely wraps copper pipe 2, protect aluminum pipe 1 more comprehensively
Copper pipe 2 is protected, makes copper pipe 2 be not easy directly to contact with outside air, copper pipe 2 is made to be not easy to corrode, be not easy to influence the intensity of copper pipe 2, it is interior
Lining bar 5 is divided into PE pipe liner bar, aluminium-alloy pipe liner bar and liner bar interconnecting piece from left to right, and PE pipe internal lining pipe
What the internal diameter of outer diameter and PE pipe 3 matched, the outer diameter of the outer diameter and PE pipe 3 of aluminium alloy lining bar matches, liner bar interconnecting piece
Match with the aluminum pipe 1 after compacting, internal lining pipe, liner bar 5 is not easy during aluminum pipe 1, copper pipe 2 and PE pipe 3 are swaged
It is directly swaged and hammers 6 be collapseds into shape, be not easy to generate excessive waste product in rotary swaging process, while can be to aluminium during swaging
Pipe 1, copper pipe 2 and PE pipe 3 repeat two to swaging three times, by repeatedly swage aluminum pipe 1, copper pipe 2 and PE pipe 3 are carried out it is whole
Shape makes aluminum pipe 1, copper pipe 2 and PE pipe 3 reach design requirement；
S6, surface polishing will be processed by shot blasting, by the oxygen on 1 surface of aluminum pipe by the outer wall surface for the aluminum pipe 1 swaged
Change after layer polishes off, then 1 surface of aluminum pipe is polished smooth；
Composite pipe Jing Guo surface polishing is put into low-temperature oxidation furnace, is passed through oxygen by S7, oxidation processes, makes 1 table of aluminum pipe
Face oxidation, forms fine and close oxidation film, and the temperature of low-temperature oxidation furnace in normal work is 100 degrees centigrades, and cryogenic oxygen
Changing furnace air need to maintain the circulation of air, and need continuously to be filled with oxygen into low-temperature oxidation furnace, on the outer wall for making aluminum pipe 1
Fine and close oxidation film is formed, aluminum pipe 1 is protected, aluminum pipe 1 is made to be not easy to corrode in the environment；
S8, package insulating layer pass through between insulating layer and aluminum pipe 1 in the foam-rubber cushion of the outside of aluminum pipe 1 package heat preservation
Nylon note is fixedly connected；
The aluminum alloy lining plastic composite pipe for having wrapped up insulating layer is carried out packing and binding, then aluminium alloy is served as a contrast by S9, packing and binding
Plastic composite is transported to stores keeping or directly factory transport.
The surface of PE pipe 3 is connected with multiturn stiffener rings 4, and stiffener rings 4 are dug far from one end of PE pipe 3 chamfering, PE pipe 3
The stiffener rings 4 of surface connection can increase the intensity of PE pipe 3, and chamfering is dug in stiffener rings 4, can be in aluminum pipe 1,2 and of copper pipe
Copper pipe 2 is easy to fit on the surface of PE pipe 3 during PE pipe 3 is swaged, copper pipe 2 and PE pipe 3 it is compound during cause it is strong
Change ring 4 to crumble, influence normal use effect of stiffener rings 4, stiffener rings 4 select high-intensitive steel alloy, and the intensity of stiffener rings 4
It is much larger than copper pipe 2 with hardness, makes aluminum pipe 1, copper pipe 2 and PE pipe 3 during swaging, stiffener rings 4 are not easy to be damaged by copper pipe 2
It is bad, so that stiffener rings 4 is easy to keep the function of enhancing, and after swaging process, stiffener rings 4 can make aluminum pipe 1 and copper pipe 2 it
Between be not readily separated.
The resistance to compression impact resistance of enhancing aluminum alloy lining plastic composite pipe outer layer aluminium alloy may be implemented in the present invention, makes outer layer aluminium
Compo pipe is not easy that biggish deformation even rupture occurs under the action of ambient pressure, and the protection energy of outer layer aluminium alloy is significantly increased
Power.
In the actual production of composite pipe, staff is respectively produced aluminum pipe 1, copper pipe 2 and PE pipe 3 first, simultaneously
The inside and outside wall of inner wall and copper pipe 2 to aluminum pipe 1 carries out frosted processing, improves the roughness of aluminum pipe 1 and 2 surface of copper pipe, reduces aluminium
The aluminum pipe 1 handled by frosted and copper pipe 2 are put into togerther super by the compound difficulty between pipe 1 and copper pipe 2 together with PE pipe 3 later
In sound wave service sink, ultrasonic cleaning is carried out, the impurity of aluminum pipe 1,3 surface of copper pipe 2 and PE pipe is removed, makes aluminum pipe 1 and copper pipe 2 not
The contact of Yi Yingyu impurity occurs electrochemical reaction and leads to 2 Accelerated corrosion of aluminum pipe 1 and copper pipe, will take out out of ultrasonic cleaning pond
Aluminum pipe 1, after copper pipe 2 and PE pipe 3 dry, PE pipe 3 is inserted in copper pipe 2, then copper pipe 2 and PE pipe 3 are inserted in aluminum pipe 1, and
Liner bar 5 is inserted into PE pipe 3, and liner bar 5 and aluminum pipe 1 is fixed, by aluminum pipe 1, copper pipe 2 and PE pipe 3 together with liner bar 5 one
It rises in feeding swager and is repeatedly swaged, until it is completely compound between aluminum pipe 1 and copper pipe 2 and copper pipe 2 and PE pipe 3, it will be compound
Aluminum pipe 1, copper pipe 2 and the PE pipe 3 of completion take out out of swager, and the outer wall of aluminum pipe 1 is processed by shot blasting, remove aluminum pipe 1
Surface adhesion part and unsound oxidation film, then aluminum pipe 1, copper pipe 2 and PE pipe 3 are rapidly feeding in low-temperature oxidation furnace, to aluminium
The outer wall of pipe 1 is aoxidized, and the continuous dense oxidation film of the Surface Creation of aluminum pipe 1 is made, and increases the corrosion resistance of aluminum pipe 1, finally
The aluminum pipe 1 of the continuous dense oxidation film of Surface Creation is taken out from low-temperature oxidation furnace together with copper pipe 2 and PE pipe 3, and in aluminum pipe 1
Outer wall on superscribe the foam-rubber cushion of heat preservation, be not easy aluminum pipe 1, copper pipe 2 and PE pipe 3 because of aluminum pipe 1 in lower temperature work
Excessive shrinkage occurs with copper pipe 2 and causes PE pipe 3 impaired, while foam-rubber cushion can also transported in aluminum pipe 1, copper pipe 2 and PE pipe 3
The dense oxidation film that 1 Surface Creation of aluminum pipe is protected during storage, make the dense oxidation film on 1 surface of aluminum pipe be not easy to be scratched by
Damage, is not easy to influence the protecting effect of dense oxidation film.
It is described above；It is merely preferred embodiments of the present invention；But scope of protection of the present invention is not limited thereto；
Anyone skilled in the art is in the technical scope disclosed by the present invention；According to the technique and scheme of the present invention and its
It improves design and is subject to equivalent substitution or change；It should be covered by the scope of protection of the present invention.
Claims (10)
1. a kind of production technology of composite pipe, it is characterised in that: including following preparation process:
S1, tube forming manufacture aluminum pipe (1), copper pipe (2) and the PE pipe (3) of design diameter, wherein aluminum pipe (1) and copper pipe
(2) it is manufactured using mandrel mill group, and PE pipe (3) is produced by the way of cold drawing cold-drawn；
S2, frosted processing, carry out frosted processing for the inside and outside wall of the aluminum pipe manufactured (1) inner wall and copper pipe (2) respectively, make aluminum pipe
(1) inside and outside wall of inner wall and copper pipe (2) becomes more coarse surface；
S3, ultrasonic cleaning will be put into together ultrasonic cleaning by aluminum pipe (1), copper pipe (2) and the PE pipe (3) of frosted processing
In pond, be respectively washed the impurity that adheres on the inside and outside wall of aluminum pipe (1), copper pipe (2) and PE pipe (3), make aluminum pipe (1), copper pipe (2) and
The inside and outside wall that PE manages (3) keeps clean；
PE pipe (3) is inserted in copper pipe (2) by S4, casing, then copper pipe (2) and PE pipe (3) are inserted in together in aluminum pipe (1), then to
PE is managed in (3) and is inserted into liner bar (5), while aluminum pipe (1) and liner bar (5) is fixed；
S5, it swages, aluminum pipe (1), copper pipe (2) and PE pipe (3) is swaged using swager, keep aluminum pipe (1) and copper pipe (2) multiple
Conjunction and copper pipe (2) and PE pipe (3) are compound, make to form the more close pipe of connection between aluminum pipe (1), copper pipe (2) and PE pipe (3)
Material；
S6, surface polishing will be processed by shot blasting, by the oxidation on aluminum pipe (1) surface by the outer wall surface for the aluminum pipe (1) swaged
After layer polishes off, then aluminum pipe (1) surface polished smooth；
Composite pipe Jing Guo surface polishing is put into low-temperature oxidation furnace, is passed through oxygen by S7, oxidation processes, makes aluminum pipe (1) surface
Oxidation forms fine and close oxidation film；
S8, package insulating layer pass through Buddhist nun between insulating layer and aluminum pipe (1) in the foam-rubber cushion of the outside of aluminum pipe (1) package heat preservation
Imperial note is fixedly connected；
The aluminum alloy lining plastic composite pipe for having wrapped up insulating layer is carried out packing and binding, then aluminium alloy lining plastic is answered by S9, packing and binding
Pipe is closed to transport to stores keeping or directly factory transport.
2. a kind of production technology of composite pipe according to claim 1, it is characterised in that: in the S1 tube forming,
What the internal diameter of aluminum pipe (1) and the outer diameter of copper pipe (2) matched, the outer diameter that PE manages (3) is less than the internal diameter of copper pipe (2).
3. a kind of production technology of composite pipe according to claim 1, it is characterised in that: ground in the S2 frosted processing
Sand-blast can be used for sand processing or shot-peening method is handled.
4. a kind of production technology of composite pipe according to claim 1, it is characterised in that: the S3 ultrasonic cleaning
In, after ultrasonic cleaning, the aluminum pipe (1) taken out in ultrasonic cleaning pond, copper pipe (2) and PE pipe (3) are dried.
5. a kind of production technology of composite pipe according to claim 1, it is characterised in that: described in the S4 casing
The length of aluminum pipe (1) need to be longer than copper pipe (2), make after swaging, and aluminum pipe (1) can completely wrap copper pipe (2).
6. a kind of production technology of composite pipe according to claim 1, it is characterised in that: described in the S4 casing
Liner bar (5) is divided into PE pipe liner bar, aluminium-alloy pipe liner bar and liner bar interconnecting piece, and PE pipe internal lining pipe from left to right
Outer diameter and the internal diameter of PE pipe (3) match, the outer diameter that the outer diameter and PE of aluminium alloy lining bar manage (3) matches, liner bar
Aluminum pipe (1) after interconnecting piece and compacting matches.
7. a kind of production technology of composite pipe according to claim 1, it is characterised in that:, can be with during the S5 swages
Two are repeated to swaging three times to aluminum pipe (1), copper pipe (2) and PE pipe (3).
8. a kind of production technology of composite pipe according to claim 1, it is characterised in that: in the S7 oxidation processes,
The temperature of low-temperature oxidation furnace in normal work is 100 degrees centigrades, and low-temperature oxidation furnace air need to keep air stream
It is logical, and oxygen needs continuously to be filled with oxygen into low-temperature oxidation furnace.
9. a kind of production technology of composite pipe according to claim 1, it is characterised in that: the surface of the PE pipe (3)
It is connected with multiturn stiffener rings (4), the stiffener rings (4) are dug far from one end of PE pipe (3) chamfering.
10. according to claim 1 or a kind of production technology of composite pipe described in 9, it is characterised in that: the stiffener rings (4)
High-intensitive steel alloy is selected, and the intensity of stiffener rings (4) and hardness are much larger than copper pipe (2).
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| CN201910085269.7A CN109821925A (en) | 2019-01-29 | 2019-01-29 | A kind of production technology of composite pipe |
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| CN201910085269.7A CN109821925A (en) | 2019-01-29 | 2019-01-29 | A kind of production technology of composite pipe |
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| CN109821925A true CN109821925A (en) | 2019-05-31 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111531967A (en) * | 2020-05-14 | 2020-08-14 | 深圳市博新美纳米科技有限公司 | Nano antibacterial PE-RT water supply pipe and preparation process |
| CN113414364A (en) * | 2021-06-21 | 2021-09-21 | 山西昌达盛精密铸造有限公司 | Solid-state double-metal inner wall wear-resistant material conveying circular pipe and preparation method thereof |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| GB897635A (en) * | 1960-01-30 | 1962-05-30 | Howell & Company Ltd | Manufacture of composite metal tubes |
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| CN113414364A (en) * | 2021-06-21 | 2021-09-21 | 山西昌达盛精密铸造有限公司 | Solid-state double-metal inner wall wear-resistant material conveying circular pipe and preparation method thereof |
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Application publication date: 20190531 |