CN108080436A - A kind of production method of new-type compound aluminum tube - Google Patents
A kind of production method of new-type compound aluminum tube Download PDFInfo
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- CN108080436A CN108080436A CN201711111047.5A CN201711111047A CN108080436A CN 108080436 A CN108080436 A CN 108080436A CN 201711111047 A CN201711111047 A CN 201711111047A CN 108080436 A CN108080436 A CN 108080436A
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- pipe
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- core pipe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
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- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
- Extrusion Of Metal (AREA)
Abstract
The invention discloses a kind of production method of new-type compound aluminum tube, the 1st steps：Outer multiple tube, interior multiple tube and core pipe are squeezed out respectively using horizontal type hot extrusion machine；2nd step：Inner wall, the inside and outside wall of core pipe and the outer wall of interior multiple tube of the outer multiple tube are handled with physical method, makes its surface roughness 0.025 μm small, surface smoothness is less than 0.02 μm；And outer multiple tube is sleeved on outside core pipe, interior multiple tube is inserted into core pipe；3rd step：Cold-drawn is carried out to the nested composite pipe finished in the 2nd step, forms it into composite billet pipe；4th step：The composite billet pipe is heated to close to molten condition；5th step：It is sent to heating the composite billet pipe finished in the 4th step to Pilger pipe mill progress hot rolling；6th step：It reuses Pilger pipe mill and carries out cold rolling；7th step：To cold-drawn and the heat treatment again of composite billet pipe.The compound aluminum tube produced using this method is seamless compound aluminum tube, leakage, problems of crack when thoroughly avoiding in the presence of welding gap.
Description
Technical field
The present invention relates to machinery field more particularly to a kind of production methods of new-type compound aluminum tube.
Background technology
Compound aluminum tube refers to the aluminium of outer layer or internal layer and the inconsistent aluminium alloy pipe of material of aluminium core.It is this at present
The processing method of Al-alloy tubing is：The strip of composite bed is made using method hot rolling technology, then with tuber strip
Tubulose is rolled into, is finally welded using high-frequency welder.There are one for the compound aluminum tube that such conventional method manufactures
High-frequency welding gap.Due to this weld seam because welding is formed, the main body of internal organizational structure and hot rolling formation has apparent area
Not.During actual production use, commissure is easily revealed, cracking.Its salt spray resistance ability is also apparent insufficient.Therefore, it is necessary to
A kind of production method of new-type compound aluminum tube is to solve the above problems.
The content of the invention
In view of the defects existing in the prior art, a kind of new-type clad aluminum that can produce welding gap of offer of the invention
The production method of pipe, technology contents are：A kind of production method of new-type compound aluminum tube, comprises the following steps, the 1st step：It uses
Horizontal type hot extrusion machine squeezes out outer multiple tube, interior multiple tube and core pipe respectively；2nd step：The outer multiple tube is handled with physical method
Inner wall, the inside and outside wall of core pipe and the outer wall of interior multiple tube, make its surface roughness 0.025 μm small, surface smoothness is less than
0.02μm；And outer multiple tube is sleeved on outside core pipe, interior multiple tube is inserted into core pipe；3rd step：To nested complete in the 2nd step
Complete composite pipe carries out cold-drawn, forms it into composite billet pipe；4th step：The composite billet pipe is heated to close to molten condition；
5th step：It is sent to heating the composite billet pipe finished in the 4th step to Pilger pipe mill progress hot rolling；6th step：Reuse Pilger
Milling train carries out cold rolling；7th step：To cold-drawn and the heat treatment again of composite billet pipe.
1st step squeezes out outer multiple tube, interior multiple tube and core pipe using horizontal type hot extrusion machine, squeezes out seamless outer compound
Pipe, interior multiple tube and core pipe.2nd step handles the inner wall of the outer multiple tube, the inside and outside wall of core pipe (3) and interior with physical method
The outer wall of multiple tube (2) makes its surface roughness small by 0.025μm, surface smoothness is less than 0.02μm；Beneficial to outer multiple tube, core pipe
It is nested successively with interior multiple tube.3rd step, hard-drawn technique act on nested composite pipe, and composite pipe is made to be processed up to satisfaction
The shape and mechanical property of demand.The composite billet pipe is heated to close to molten condition by the 4th step, in heating process, molecule
Warm-up movement kinetic energy increase, cause crystalline fracture, composite billet pipe is converted by crystalline state close to liquid condition, possesses partially liq
Physical property.5th step carries out Pilger hot rolling, metal plastic height during hot rolling, deformation resistance, greatly reduces metal change
The energy expenditure of shape.Hot rolling can improve the process industrial art performance of metal and alloy, i.e., crush the coarse grain of as-cast condition, show
Crack healing, reduces or eliminates casting flaw, as-cast structure is changed into Deformation structure, the processing performance of alloy is improved, makes
Outer multiple tube, core pipe and the realization of interior multiple tube is obtained to combine closely；6th step carries out Pilger cold rolling so that structure between tubing tissue
Closely.7th step, with reference to cold-drawn, heat treatment so that compound aluminum tube reaches specification, correction Production deviations.
Further, outer multiple tube, interior multiple tube and tube core are welded by the horizontal type hot extrusion machine using forward extrusion
It closes pipe or reverse extrusion seamless pipe squeezes out.Section bar outflow direction is identical with squeezing the axis direction of motion during extruding metal, is known as forward direction
Extruding or abbreviation forward extrusion；Section bar outflow direction is with squeezing the axis direction of motion on the contrary, referred to as reverse extrusion or letter during extruding metal
Claim backward extrusion.Forward extrusion technical maturity, conveniently；Extruding force is small needed for reverse extrusion, and energy consumption reduces.Both of which is suitable for this
Invention, meets the extruding requirement of seamless outer multiple tube, core pipe and interior multiple tube.
Further, the outer multiple tube and/or interior multiple tube material are 4,7 or 9 series alloys；Core pipe material is
1st, 3 or 6 series alloys；The outer a diameter of 12-200mm of multiple tube, wall thickness 1.2-35mm；A diameter of 12-200mm of core pipe,
Wall thickness is 12-80mm；The adjacent outer multiple tube and diameter difference of core pipe, adjacent core pipe and interior multiple tube diameter difference exist
Between 0.05mm-20mm；Outer compound thickness of pipe wall and core pipe wall thickness numeric ratio, interior compound thickness of pipe wall and sandwich layer thickness of pipe wall numeric ratio are equal
Between 3%-20%.
Further, the physical method in the 2nd step includes metallic brush polishing, the plane milling of spherical surface milling machine or polishing machine throwing
Light.The method may be such that the surface roughness of outer multiple tube, interior multiple tube and core pipe is less than 0.025, and surface smoothness is small
In 0.02.
Further, the length of composite billet pipe is 1-30 meters in the 3rd step.
Further, in the 4th step, the method for heating includes sensing heating, flame heating or heat transfer heating, adds
Hot temperature is 400-650 degree.Three kinds of heating means are relatively simple, quick and easily controllable, as preferred.And it heats
Temperature is the temperature close to melting chosen according to the difference of selected alloy material.
Further, in the 5th step, during using Pilger hot rolling, interior punching stick in the Pilger pipe mill and
The work of press undergauge takes the smearing heat-insulated lubricating film of nano-graphene, plays the role of heat-insulated lubrication, prevents viscous aluminium.Deflection
5%-60% is arranged to, road number is arranged to 1-9 times.The setting of deflection and road number, sets according to the difference of alloy material
It puts.
Further, in the 6th step, when being cold-pressed using Pilger pipe mill, in the Pilger pipe mill
Interior punching stick and the work of press undergauge take the smearing heat-insulated lubricating film of nano-graphene；Play the role of heat-insulated lubrication, prevent
Viscous aluminium.Deflection is arranged to 5%-70%, and road number is arranged to 1-9 times.The setting of deflection and road number, according to alloy material
Difference and set.
Further, the hard-drawn technique in the 7th step includes disk drawing or stretches, according to alloy property and finished product requirement
Cold-drawn passage is 1-6 times by state, between every time section working modulus 5%-60%；Likewise, according to alloy property and into
Heat treatment in 7th step described in product claimed condition includes sensing heating or annealing furnace, and temperature range is 150-450 degree.
Further, the outer multiple tube, core pipe are light pipe, spiral teeth inner thread or straight-tooth riffled tube.Light pipe
Advantage is nested simplicity；The advantages of spiral teeth inner thread or straight-tooth riffled tube, is consolidating between outer multiple tube and core pipe
It is fixed, displacement will not be generated.
Advantageous effect：A kind of production method of new-type compound aluminum tube of the present invention, is produced compound using this method
Aluminum pipe is seamless compound aluminum tube, leakage, problems of crack when thoroughly avoiding in the presence of welding gap；Use heat treatment, hot rolling
With the kinds of processes such as cold rolling so that the compound aluminum tube produced has stronger temperature tolerance, processing performance and punching performance.
Description of the drawings
Fig. 1 is a kind of structure diagram of new-type compound aluminum tube of the present invention.
Specific implementation method
In the following with reference to the drawings and specific embodiments, the present invention is furture elucidated, it should be understood that these embodiments are merely to illustrate
It the present invention rather than limits the scope of the invention, after the present invention has been read, those skilled in the art are to of the invention each
The modification of kind equivalent form falls within the application scope as defined in the appended claims.
As shown in Figure 1, for the new-type compound aluminum tube produced using the present invention, production method is：1st step：It uses
Horizontal type hot extrusion machine squeezes out outer multiple tube, interior multiple tube and core pipe respectively；2nd step：It is handled with physical method in outer multiple tube
The outer wall of wall, the inside and outside wall of core pipe and interior multiple tube makes its surface roughness 0.025 μm small, and surface smoothness is less than 0.02 μm；
And outer multiple tube is sleeved on outside core pipe, interior multiple tube is inserted into core pipe；3rd step：To the nested composite pipe finished in the 2nd step
Cold-drawn is carried out, forms it into composite billet pipe；4th step：Composite billet pipe is heated to close to molten condition；5th step：To in the 4th step
The composite billet pipe finished is heated to send to Pilger pipe mill progress hot rolling；6th step：It reuses Pilger pipe mill and carries out cold rolling；7th
Step：To cold-drawn and the heat treatment again of composite billet pipe.
1st step squeezes out outer multiple tube, interior multiple tube and core pipe using horizontal type hot extrusion machine, squeezes out seamless outer compound
Pipe, interior multiple tube and core pipe.2nd step handles inner wall, the inside and outside wall of core pipe 3 and the interior multiple tube 2 of outer multiple tube with physical method
Outer wall, make its surface roughness small by 0.025μm, surface smoothness is less than 0.02μm；Such smooth degree is beneficial to outer compound
Pipe, core pipe are nested successively with interior multiple tube.3rd step, hard-drawn technique act on nested composite pipe, make composite pipe up to completely
The shape and mechanical property of sufficient process requirements.Composite billet pipe is heated to close to molten condition by the 4th step, in heating process, point
The kinetic energy increase of the warm-up movement of son, causes crystalline fracture, composite billet pipe is converted by crystalline state close to liquid condition, possesses part liquid
The physical property of body.5th step carries out Pilger hot rolling, and metal plastic height during hot rolling, deformation resistance greatly reduces metal
The energy expenditure of deformation.Hot rolling can improve the process industrial art performance of metal and alloy, i.e., crush the coarse grain of as-cast condition,
Significant crack healing, reduces or eliminates casting flaw, and as-cast structure is changed into Deformation structure, improves the processing performance of alloy,
So that outer multiple tube, core pipe and the realization of interior multiple tube are combined closely；6th step carries out Pilger cold rolling so that tied between tubing tissue
Structure is close.7th step with reference to hard-drawn technique and heat treatment so that compound aluminum tube reaches specification, corrects Production deviations.
Outer multiple tube, interior multiple tube and tube core by horizontal type hot extrusion machine using forward extrusion welded tube or reverse extrusion without
Slit-tube squeezes out.Section bar outflow direction is identical with squeezing the axis direction of motion during extruding metal, is known as forward extrusion or abbreviation forward extrusion；
Section bar outflow direction is with squeezing the axis direction of motion on the contrary, referred to as reverse extrusion or abbreviation backward extrusion during extruding metal.Forward extrusion
Technical maturity, conveniently；Extruding force is small needed for reverse extrusion, and energy consumption reduces.Both of which is suitable for the present invention, meets seamless outer multiple
Close the extruding requirement of pipe, core pipe and interior multiple tube.
Outer multiple tube and/or interior multiple tube material are 4,7 or 9 series alloys；Core pipe material is closed for 1,3 or 6 series aluminums
Gold；The outer a diameter of 12-200mm of multiple tube, wall thickness 1.2-35mm；A diameter of 12-200mm of core pipe, wall thickness 12-80mm；
The adjacent outer multiple tube and diameter difference of core pipe, adjacent core pipe and interior multiple tube diameter difference are between 0.05mm-20mm；Outside
Compound thickness of pipe wall and core pipe wall thickness numeric ratio, interior compound thickness of pipe wall and sandwich layer thickness of pipe wall numeric ratio are between 3%-20%.
Outer multiple tube (1), core pipe (3) are light pipe, spiral teeth inner thread or straight-tooth riffled tube.The advantages of light pipe, is embedding
Set is easy；The advantages of spiral teeth inner thread or straight-tooth riffled tube, is the fixation between outer multiple tube (1) and core pipe (3), no
Displacement can be generated.
Physical method in 2nd step includes metallic brush polishing, the plane milling of spherical surface milling machine or polishing machine polishing.Method may be such that
The surface roughness of outer multiple tube, interior multiple tube and core pipe is less than 0.025, and surface smoothness is less than 0.02.
The length of composite billet pipe is 1-30 meters in 3rd step.
In 4th step, the method for heating includes sensing heating, flame heating or heat transfer heating, heating temperature 400-650
Degree.Three kinds of heating means it is relatively simple, quick and easily controllable, as preferred.And heating temperature, it is according to selected conjunction
The difference of golden material is come the temperature close to melting chosen.
In 5th step, during using Pilger hot rolling, interior punching stick and the work of press undergauge in Pilger pipe mill take and apply
The heat-insulated lubricating film of nano-graphene is smeared, plays the role of heat-insulated lubrication, prevents viscous aluminium.Deflection is arranged to 5%-60%, passage
Number is arranged to 1-9 times.The setting of deflection and road number, is set according to the difference of alloy material.
In 6th step, when being cold-pressed using Pilger pipe mill, interior punching stick and press undergauge work in Pilger pipe mill
Take the smearing heat-insulated lubricating film of nano-graphene；Play the role of heat-insulated lubrication, prevent viscous aluminium.Deflection is arranged to 5%-
70%, road number is arranged to 1-9 times.The setting of deflection and road number, is set according to the difference of alloy material.
Hard-drawn technique in 7th step includes disk and draws or stretch, according to alloy property and finished product claimed condition, by cold-drawn passage
For 1-6 times, between every time section working modulus 5%-60%；Likewise, according to the 7th step of alloy property and finished product claimed condition
In heat treatment include sensing heating or annealing furnace, temperature range be 150-450 degree.
A kind of production method of new-type compound aluminum tube of the present invention, the compound aluminum tube produced using this method are seamless
Compound aluminum tube, leakage, problems of crack when thoroughly avoiding in the presence of welding gap；It is more using heat treatment, hot rolling and cold rolling etc.
Kind technique so that the compound aluminum tube produced has stronger temperature tolerance, processing performance and punching performance.
Claims (10)
1. a kind of production method of new-type compound aluminum tube, it is characterised in that comprise the following steps：
1st step：Outer multiple tube (1), interior multiple tube (2) and core pipe (3) are squeezed out respectively using horizontal type hot extrusion machine；
2nd step：The outer of the inner wall of the outer multiple tube, the inside and outside wall of core pipe (3) and interior multiple tube (2) is handled with physical method
Wall makes its surface roughness small by 0.025μm, surface smoothness is less than 0.02μm；And outer multiple tube (1) is sleeved on core pipe (3) outside,
It will be in interior multiple tube (2) insertion core pipe (3)；
3rd step：Cold-drawn is carried out to the nested composite pipe finished in the 2nd step, forms it into composite billet pipe；
4th step：The composite billet pipe is heated to close to molten condition；
5th step：It is sent to heating the composite billet pipe finished in the 4th step to Pilger pipe mill progress hot rolling；
6th step：It reuses Pilger pipe mill and carries out cold rolling；
7th step：To cold-drawn and the heat treatment again of composite billet pipe.
2. the production method of new-type compound aluminum tube according to claim 1, it is characterised in that：In 1st step, horizontal heat
The pressing method of extruder is forward extrusion welded tube or reverse extrusion seamless pipe.
3. the production method of new-type compound aluminum tube according to claim 1, it is characterised in that：The outer multiple tube (1) and/
Or interior multiple tube (2) material is 4,7 or 9 series alloys；Core pipe (3) material is 1,3 or 6 series alloys；Outer multiple tube (1)
A diameter of 12-200mm, wall thickness 1.2-35mm；A diameter of 12-200mm of core pipe (3), wall thickness 12-80mm；Adjacent is outer
The diameter difference of multiple tube (1) and core pipe (3), adjacent core pipe (3) and interior multiple tube (2) diameter difference 0.05mm-20mm it
Between；Outer multiple tube (1) wall thickness exists with core pipe (3) wall thickness numeric ratio, interior multiple tube (2) wall thickness and sandwich layer thickness of pipe wall numeric ratio
Between 3%-20%.
4. the production method of new-type compound aluminum tube according to claim 1, it is characterised in that：Physics in 2nd step
Method includes metallic brush polishing, the plane milling of spherical surface milling machine or polishing machine polishing.
5. the production method of new-type compound aluminum tube according to claim 1, it is characterised in that：Composite billet in 3rd step
The length of pipe is 1-30 meters.
6. the production method of new-type compound aluminum tube according to claim 1, it is characterised in that：In 4th step, heating
Method includes sensing heating, flame heating or heat transfer heating, and heating temperature is 400-650 degree.
7. the production method of new-type compound aluminum tube according to claim 1, it is characterised in that：In 5th step, skin is used
During erg hot rolling, interior punching stick and the work of press undergauge in the Pilger pipe mill take the smearing heat-insulated profit of nano-graphene
Synovial membrane；Deflection is arranged to 5%-60%, and road number is arranged to 1-9 times.
8. the production method of new-type compound aluminum tube according to claim 1, it is characterised in that：In 6th step, skin is used
When erg milling train is cold-pressed, interior punching stick and the work of press undergauge in the Pilger pipe mill take smearing nanometer stone
The black heat-insulated lubricating film of alkene；Deflection is arranged to 5%-70%, and road number is arranged to 1-9 times.
9. the production method of new-type compound aluminum tube according to claim 1, it is characterised in that：Cold-drawn in 7th step
Technology includes disk and draws or stretch, and cold-drawn passage is 1-6 times, between every time section working modulus 5%-60%；In 7th step
Heat treatment include sensing heating or annealing furnace, temperature range be 150-450 degree.
10. the production method of new-type compound aluminum tube according to claim 1, it is characterised in that：The outer multiple tube (1),
Core pipe (3) is light pipe, spiral teeth inner thread or straight-tooth riffled tube.
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| CN201711111047.5A CN108080436A (en) | 2017-11-13 | 2017-11-13 | A kind of production method of new-type compound aluminum tube |
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| CN201711111047.5A CN108080436A (en) | 2017-11-13 | 2017-11-13 | A kind of production method of new-type compound aluminum tube |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108746243A (en) * | 2018-06-12 | 2018-11-06 | 江苏银环精密钢管有限公司 | A kind of manufacturing method of same steel grade two-layer compound seamless pipe |
| CN109174993A (en) * | 2018-06-27 | 2019-01-11 | 浙江海亮新材料有限公司 | A kind of processing method of part dual alloy composite aluminum profile |
| CN112742891A (en) * | 2020-12-16 | 2021-05-04 | 湖南华耀百奥医疗科技有限公司 | Preparation method of medical degradable zinc-based composite pipe |
| CN113477712A (en) * | 2021-07-30 | 2021-10-08 | 安徽工业大学 | Preparation process of multilayer metal composite belt |
| CN114952205A (en) * | 2022-07-13 | 2022-08-30 | 扬州瑞斯乐复合金属材料有限公司 | Production method of microchannel flow-collecting aluminum pipe |
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| CN112742891A (en) * | 2020-12-16 | 2021-05-04 | 湖南华耀百奥医疗科技有限公司 | Preparation method of medical degradable zinc-based composite pipe |
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| CN113477712B (en) * | 2021-07-30 | 2023-12-05 | 安徽工业大学 | Preparation process of multilayer metal composite belt |
| CN114952205A (en) * | 2022-07-13 | 2022-08-30 | 扬州瑞斯乐复合金属材料有限公司 | Production method of microchannel flow-collecting aluminum pipe |
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