CN107088589A - A kind of preparation method of radiating tube - Google Patents
A kind of preparation method of radiating tube Download PDFInfo
- Publication number
- CN107088589A CN107088589A CN201710395034.9A CN201710395034A CN107088589A CN 107088589 A CN107088589 A CN 107088589A CN 201710395034 A CN201710395034 A CN 201710395034A CN 107088589 A CN107088589 A CN 107088589A
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- Prior art keywords
- radiating tube
- preparation
- reduction factor
- core
- tube according
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Classifications
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The present invention relates to the preparation method of a radiating tube, belong to technical field of automobile parts, it is mainly characterized by re-compacted into pancake seamless radiating tube after the seamless base pipe of aluminum is subtracted into thickness through drawing tube reducing, its technique is compared with existing roll bending welding procedure, simplify the processing technology of radiating tube, the seamless radiating tube of processing completely solves existing radiating tube weld corrosion leakage problem, improve the durability of radiating tube, roll bending welding procedure that need not be complicated is equipped, reduce production cost, the present invention realizes radiating tube no-welding-seam corrosion leakage, be conducive to improving the quality of radiator and increase the service life.
Description
Technical field
The present invention relates to automobile technical field, and in particular to a kind of preparation method of radiating tube.
Background technology
The manufacture method of existing a variety of radiating tubes based on welding, these methods are related to following technical process：Sheet metal strip
Roll forming, to form passage；Apply fluxing agent to the opening tube surface of roll forming；Welding, during weld heating,
Fluxing agent is cleaned to metal surface, so that the welding material of melting flows into pipe joint, sealed weld seam is formed after cooling.
One key factor of influence radiator service life is with radiating inside pipe wall corrosion resistance and thus caused leakage, once occur
Leakage, radiator is failure.The reparation of radiator leak is extremely difficult, even more so especially for aluminium radiator.
The content of the invention
It is an object of the invention to provide a kind of preparation method of radiating tube, existing radiating tube is solved by using sheet metal strip
The process that roll forming is welded again brought because the corrosion resistance of weld seam is poor compared with matrix material, it is easy to formed in commissure
Corrode the wretched insufficiency of leakage.No-welding-seam corrosion leakage is realized, the quality of radiator is improved with profit and increased the service life.
The purpose of the present invention is achieved through the following technical solutions, a kind of preparation method of radiating tube, described method
For the seamless base pipe of aluminum is subtracted into thickness through drawbench drawing tube reducing successively；Pipe after drawing is processed is pressed on unit is flattened
Pancake；To flat tube fixed length cutting.
Drawbench drawing is processed for cold-drawn, and drawing is using fixed core, or uses floating core die.
Aluminum is seamless, and base pipe is aluminum or aluminum alloy base pipe.
The external diameter reduction factor and wall thickness reduction factor that the drawing tube reducing subtracts thickness successively decrease by passage.
The span that tube reducing subtracts the external diameter reduction factor of thickness is 0.9~1.3；The span of wall thickness reduction factor is
1.0~1.4.
The present invention is re-compacted into pancake seamless radiating tube, its technique after the seamless base pipe of aluminum is subtracted into thickness through drawing tube reducing
Compared with roll bending-welding procedure, simplify the processing technology of radiating tube, the seamless radiating tube of processing completely solves existing radiating
Pipe weld corrosion leakage problem, improves the durability of radiating tube, it is not necessary to complicated roll bending-welding procedure equipment, reduces
Production cost, the present invention realizes the corrosion leakage of radiating tube no-welding-seam, and the quality and extension for being conducive to improving radiator use the longevity
Life.
Embodiment
The present invention is further illustrated in conjunction with the embodiments, and a kind of preparation method of radiating tube is successively by the seamless base Guan Jingla of aluminum
Drawing machine drawing tube reducing subtracts thickness；Pipe after drawing is processed is pressed into pancake on unit is flattened；To flat tube fixed length cutting.
Drawbench drawing is processed for cold-drawn, and drawing speed is 500~1000m/s.
Drawing is using fixed core, or uses floating core die.
Aluminum is seamless, and base pipe is aluminum or aluminum alloy base pipe.
The external diameter reduction factor and wall thickness reduction factor that the drawing tube reducing subtracts thickness successively decrease by passage.
The span that drawing tube reducing subtracts the external diameter reduction factor of thickness is 0.9~1.3；The value model of wall thickness reduction factor
Enclose for 1.0~1.4.
The external diameter reduction factor and wall thickness reduction factor of first, last drawing passes can take respectively average external diameter reduction factor and
The bound of average wall thickness reduction factor.
The semi-cone angle of cavity plate and core is 8~14 ° in drawbench, and cavity plate sizing bandwidth is 2~6mm, core calibrating strap
Width is 6~15mm, and the surface roughness of cavity plate and core working portion should be less than 0.2 μm.
The method of the invention is that the seamless base pipe of aluminum is subtracted into thickness through drawbench drawing tube reducing successively；After drawing is processed
Pipe compacting on unit is flattened is in pancake；To flat tube fixed length cutting.Aluminum seamless circular pipe is subtracted with drawbench
Footpath subtracts thick drawing processing, can be using fixed core print drawing or floating core print drawing.Base length of tube scope is 2000~3000mm.
Being designed with mould for pipe drawing is carried out with the material for subtracting thick amount and pipe according to specific sizing reduction.Include drawing road with mould design
Secondary and cavity plate and core design.The key designed with mould is to determine external diameter reduction factor and wall thickness reduction factor.External diameter decrement system
Number is the forward and backward ratio of every time drawing of pipe external diameter in drawing；Wall thickness reduction factor is every time drawing of pipe wall thickness in drawing
Pull out forward and backward ratio.
External diameter reduction factor and wall thickness reduction factor successively decrease by passage.
For aluminum pipe, the span of mean outside diameter reduction factor is 0.9~1.3；The value of average wall thickness reduction factor
Scope is 1.0~1.4.
In drawing process, appropriate lubricant should be coated on cavity plate and core, is rubbed and its to drawing process with reducing
Adverse effect.
Concrete technology, carries out the seamless pipe drawing of automobile radiators aluminum and is designed with mould, it is first determined cavity plate and core first
Working portion original dimension.
Secondly, computer simulation is carried out to each drawing passes using plasticity finite element method, according to analog result, drawn each
The working portion size of the external diameter reduction factor and wall thickness reduction factor and cavity plate and core that pull out passage is adjusted, until simulation
As a result show that drawing process is normal.Thereby determine that the working portion size of cavity plate and core.
Then, the working portion size according to cavity plate and core, design, making cavity plate and core, the table of its working portion
Surface roughness should be less than 0.2 μm.Drawing processing is carried out on drawbench, and drawing speed is 500~1000m/s.Before drawing, to recessed
Mould and core coating lubricant.
The pipe for pulling to given size is carried out crimping onto specified altitude on unit is flattened.Finally, by after flattening
Long aluminum pipe fixed length cutting, is cut into the automobile radiators seamless pipe of specific length.
Claims (8)
1. a kind of preparation method of radiating tube, it is characterised in that：The seamless base pipe of aluminum is subtracted into thickness through drawbench drawing tube reducing successively；
Pipe after drawing is processed is pressed into pancake on unit is flattened；To flat tube fixed length cutting.
2. the preparation method of radiating tube according to claim 1, it is characterised in that：Drawbench drawing is processed for cold-drawn, is drawn
Speed is pulled out for 500~1000m/s.
3. the preparation method of radiating tube according to claim 1 or 2, it is characterised in that：Drawing is using fixed core, or adopts
Use floating core die.
4. the preparation method of radiating tube according to claim 1, it is characterised in that：Aluminum is seamless, and base pipe is aluminum or aluminum alloy
Base pipe.
5. the preparation method of radiating tube according to claim 1, it is characterised in that：The external diameter that the drawing tube reducing subtracts thickness subtracts
Contracting coefficient and wall thickness reduction factor successively decrease by passage.
6. the preparation method of radiating tube according to claim 1 or 5, it is characterised in that：The external diameter that drawing tube reducing subtracts thickness subtracts
The span of contracting coefficient is 0.9~1.3；The span of wall thickness reduction factor is 1.0~1.4.
7. the preparation method of radiating tube according to claim 1 or 5, it is characterised in that：The external diameter of first, last drawing passes subtracts
Contracting coefficient and wall thickness reduction factor can take the bound of average external diameter reduction factor and average wall thickness reduction factor respectively.
8. the preparation method of radiating tube according to claim 1, it is characterised in that：The half cone of cavity plate and core in drawbench
Angle is 8~14 °, and cavity plate sizing bandwidth is 2~6mm, and core sizing bandwidth is 6~15mm, cavity plate and core working portion
Surface roughness should be less than 0.2 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710395034.9A CN107088589A (en) | 2017-05-30 | 2017-05-30 | A kind of preparation method of radiating tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710395034.9A CN107088589A (en) | 2017-05-30 | 2017-05-30 | A kind of preparation method of radiating tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107088589A true CN107088589A (en) | 2017-08-25 |
Family
ID=59640417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710395034.9A Pending CN107088589A (en) | 2017-05-30 | 2017-05-30 | A kind of preparation method of radiating tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107088589A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109848242A (en) * | 2018-11-27 | 2019-06-07 | 上海新行不锈钢管有限公司 | A kind of nuclear power station separator seamless finned tube manufacturing process of TP439 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09295089A (en) * | 1996-05-09 | 1997-11-18 | Furukawa Electric Co Ltd:The | Thin and flat tube for heat exchanger |
| CN101214610A (en) * | 2007-12-26 | 2008-07-09 | 扬州嘉和散热器有限公司 | Method for producing aluminium heat radiation tube in automobile heat radiator |
| CN102128077A (en) * | 2011-04-14 | 2011-07-20 | 无锡优萌汽车部件制造有限公司 | Aluminum finned water tank of water-cooled engine |
| CN102313475A (en) * | 2011-08-19 | 2012-01-11 | 奇瑞汽车股份有限公司 | Heat-radiating tube and manufacturing method thereof |
| CN102747255A (en) * | 2012-07-30 | 2012-10-24 | 亚太轻合金(南通)科技有限公司 | Aluminum alloy internal thread pipe for radiating pipe and production process thereof |
| CN103769831A (en) * | 2014-01-15 | 2014-05-07 | 江西理工大学 | Production process of aluminum high-efficiency heat transfer pipe |
| CN104416333A (en) * | 2013-09-03 | 2015-03-18 | 扬州东安管件有限公司 | Process for manufacturing steel seamless tees |
-
2017
- 2017-05-30 CN CN201710395034.9A patent/CN107088589A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09295089A (en) * | 1996-05-09 | 1997-11-18 | Furukawa Electric Co Ltd:The | Thin and flat tube for heat exchanger |
| CN101214610A (en) * | 2007-12-26 | 2008-07-09 | 扬州嘉和散热器有限公司 | Method for producing aluminium heat radiation tube in automobile heat radiator |
| CN102128077A (en) * | 2011-04-14 | 2011-07-20 | 无锡优萌汽车部件制造有限公司 | Aluminum finned water tank of water-cooled engine |
| CN102313475A (en) * | 2011-08-19 | 2012-01-11 | 奇瑞汽车股份有限公司 | Heat-radiating tube and manufacturing method thereof |
| CN102747255A (en) * | 2012-07-30 | 2012-10-24 | 亚太轻合金(南通)科技有限公司 | Aluminum alloy internal thread pipe for radiating pipe and production process thereof |
| CN104416333A (en) * | 2013-09-03 | 2015-03-18 | 扬州东安管件有限公司 | Process for manufacturing steel seamless tees |
| CN103769831A (en) * | 2014-01-15 | 2014-05-07 | 江西理工大学 | Production process of aluminum high-efficiency heat transfer pipe |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109848242A (en) * | 2018-11-27 | 2019-06-07 | 上海新行不锈钢管有限公司 | A kind of nuclear power station separator seamless finned tube manufacturing process of TP439 |
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Application publication date: 20170825 |
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