CN103433323A - Production method of internal thread aluminum pipe - Google Patents
Production method of internal thread aluminum pipe Download PDFInfo
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- CN103433323A CN103433323A CN2013103359666A CN201310335966A CN103433323A CN 103433323 A CN103433323 A CN 103433323A CN 2013103359666 A CN2013103359666 A CN 2013103359666A CN 201310335966 A CN201310335966 A CN 201310335966A CN 103433323 A CN103433323 A CN 103433323A
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- aluminum pipe
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Abstract
The invention discloses a production method of an internal thread aluminum pipe, which comprises the following steps of: a, conducting tooth pressure treatment on an aluminum tape to form grooves in the aluminum tape, b, conducting forming treatment on the aluminum tape after the tooth pressure treatment to form an internal thread pipe blank, and c, welding gaps of the pipe blank, and conducting a reshaping and heat treatment procedure to form the finished internal thread aluminum pipe. The method is high in precision and high in efficiency, saves energy and electricity, and is high in yield and intelligence, and low in labor cost: the tooth heights of the internal thread aluminum pipe produced by the new technology are greater than those in the original technology (the heights can reach 0.25-0.3mm for the new technology, and are 0.15-0.18mm for the original technology), so that a refrigerant can form a turbulence effect in the internal thread aluminum pipe; the production speed is 40m/min, while the maximum production speed can only reach 20m/min in the original technology; energy can be saved by 15% in comparison to domestic similar equipment; a production line is automatically controlled; errors caused by human factors are reduced; the labor cost can be lowered; and the total cost is saved by 25%.
Description
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Technical field
The invention belongs to the aluminum pipe production technical field, relate in particular to the production method of internal thread aluminium pipe.
Background technology
Due to the good heat conductive performance, copper is always as the heat converter structure material.Along with the material technology progress, in heat exchanger, aluminium is day by day ripe for copper technology.With copper, compare, the aluminium reserves are abundant, and price is 1/4 of copper valency, and density is 1/3 of copper, and same constructed of aluminium is saved cost more than 50% than steel structure.There is obvious economic worth in aluminium for copper.The aluminium riffled tube is as the high-end product of alloy aluminum pipe, and inwall has groove and groove with helical angle, utilizes the aluminum pipe inner wall layer of internal layer to contact heat absorption with cold-producing medium, and outer field aluminum pipe is as the heat radiation purpose.Compare the aluminium alloy light pipe of copper riffled tube and low side, the aluminium riffled tube utilizes inner wall trench to increase heat exchange area, has improved greatly heat exchange efficiency, than the heat exchange efficiency of alloy aluminum light pipe product, exceeds 5%.And can greatly improve the tubing pressure withstanding degree with the groove of helical angle, and very strong anti-leakage ability and anti-vibration fatigue rupture intensity are arranged, use safer.
The existing aluminium riffled tube of producing all adopts the aluminum pipe light pipe to aluminum pipe inside, to press the method for tooth to produce the aluminium riffled tube through internal thread forming machine.This kind of technology exists the riffled tube shaping speed slow, inefficiency, and internal thread low precision, forming internal threads apparatus expensive simultaneously, the problem such as the tubing lumber recovery is low.。
Summary of the invention
Goal of the invention: for the problem and shortage of above-mentioned existing existence, the purpose of this invention is to provide a kind of production method of internal thread aluminium pipe, the method production efficiency is high, aluminum pipe internal thread precision is high and the internal thread tooth depth that can process is larger; Prior art has energy saving relatively simultaneously, and lumber recovery is high, low cost and other advantages.
Technical scheme: for achieving the above object, the present invention by the following technical solutions: a kind of production method of internal thread aluminium pipe comprises the following steps: a, adopt aluminium strip to be pressed tooth to process, form groove on aluminium strip; B, the aluminium strip after pressing tooth to process carry out forming processes, form the internal thread pipe; C, then place, the gap of pipe is welded, finally by crossing shaping and heat treatment step, obtained the internal thread aluminium pipe finished product.
Such scheme is improved, after in step c, welding adopts the high-frequency induction butt welding machine to be welded, also to carry out micro-processing to inside weld by technique, concrete steps are to utilize the modification bar of top band scraper slowly to screw in aluminum pipe, and the crator residual to the inside weld of aluminum pipe inner surface struck off modification.
Beneficial effect: compared with prior art, the present invention has the following advantages: precision is high: pressing tooth machine precision is 0.01mm; Tube forming precision 0.01mm in Suppression of High-frequency Welding Devices, the soldering angle precision is ± 0.2 °; New technology aluminium riffled tube, than original technique tooth height high (new technology can reach 0.25-0.3mm, original 0.15-0.18mm), is conducive to cold-producing medium and forms turbulence effect in the aluminium riffled tube; Efficiency is high: 40 m/mins of speeds of production, and original technology is the highest can only reach 20 m/mins; Energy saving: compare domestic same device energy conservation 15%; High yield, high intelligence, low cost of labor: production line automation is controlled, and reduces the error that human factor causes, and can reduce cost of labor; Totle drilling cost saves 25%.
The specific embodiment
Below, with specific embodiment, further illustrate the present invention.Should understand these embodiment and only for the present invention is described, is not used in and limits the scope of the invention, after having read the present invention, those skilled in the art all fall within the application's claims limited range to the modification of the various equivalent form of values of the present invention.
The internal thread aluminium pipe that the production specification of take is Φ 7.0 X 0.50+0.18-48Z (diameter 7mm, thickness 0.5mm, 18 ° of ditch angle of groove inclinations, 48 teeth, tooth depth 0.18mm) is example, introduces in detail the processing method of internal thread aluminium pipe of the present invention:
Raw material adopts the 3003 type aluminum alloy strips that thickness is 0.5mm, and aluminium strip width 22mm is at first extruded with 18 ° of inclinations angle, the groove of tooth depth 0.18mm by high-precision pressure tooth machine on aluminium strip.Press the pressure tooth mould of tooth machine that corresponding tooth depth, the number of teeth and helical angle are arranged, the aluminium riffled tube of production different model needs to change different moulds.
Aluminium strip after tooth enters the HFI welding production line, aluminium strip is originally arranged through shaped device volume place internal thread pipe, then welds weld seam through HFI welding.Finally carry out the crator processing, concrete steps are by a modification bar, this modification masthead end is provided with scraper, by this modification bar, slowly screw in pipe, and the gap between control scraper and internal thread is in technological requirement, in the process screwed in again, the crator at internal surface weld place is struck off processing, guarantees that throat depth is consistent with tooth depth.Then pipe, by 3 groups of barrel rolls and 3 groups of edger rolls, is aligned and sizing.Welding is annealed online to pipe later, becomes annealing tubes soft state to be convenient to rolling.By finishing machine (also being called rewinding machine), carry out finishing and flaw detection to product, rolling.Finally utilize well formula annealing furnace to carry out annealing in process, with the cleaning agent inside and outside scavenging duct and lubricating oil.
Claims (2)
1. the production method of an internal thread aluminium pipe is characterized in that comprising the following steps:
A, employing aluminium strip are pressed tooth to process, and form groove on aluminium strip;
B, the aluminium strip after pressing tooth to process carry out forming processes, form the internal thread pipe;
C, then place, the gap of pipe is welded, finally by crossing shaping and heat treatment step, obtained the internal thread aluminium pipe finished product.
2. the production method of internal thread aluminium pipe according to claim 1, it is characterized in that: after in step c, welding adopts the high-frequency induction butt welding machine to be welded, also to carry out micro-processing to inside weld by technique, concrete steps are to utilize the modification bar of top band scraper slowly to screw in aluminum pipe, and the crator residual to the inside weld of aluminum pipe inner surface struck off modification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103359666A CN103433323A (en) | 2013-08-05 | 2013-08-05 | Production method of internal thread aluminum pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103359666A CN103433323A (en) | 2013-08-05 | 2013-08-05 | Production method of internal thread aluminum pipe |
Publications (1)
| Publication Number | Publication Date |
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| CN103433323A true CN103433323A (en) | 2013-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2013103359666A Pending CN103433323A (en) | 2013-08-05 | 2013-08-05 | Production method of internal thread aluminum pipe |
Country Status (1)
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| CN (1) | CN103433323A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103769831A (en) * | 2014-01-15 | 2014-05-07 | 江西理工大学 | Production process of aluminum high-efficiency heat transfer pipe |
| CN104101246A (en) * | 2014-06-26 | 2014-10-15 | 江苏天潭科技材料有限公司 | Heat exchange inner thread pipe and production method thereof |
| CN107614136A (en) * | 2015-05-28 | 2018-01-19 | 三菱铝株式会社 | The manufacture device of the pipe of manufacture method and inner surface with helicla flute of pipe of the inner surface with helicla flute |
| CN112222219A (en) * | 2019-06-30 | 2021-01-15 | 合肥太通制冷科技有限公司 | Process for forming internal thread metal tube by welding method |
Citations (5)
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|---|---|---|---|---|
| CN2136093Y (en) * | 1992-08-28 | 1993-06-16 | 谢祖琴 | Hand electric scraper |
| CN1148523A (en) * | 1995-04-26 | 1997-04-30 | 阿尔卡泰尔电缆公司 | Method for making internal channelled tube for heat-exchanging device |
| CN1165287A (en) * | 1995-10-19 | 1997-11-19 | 三菱伸铜株式会社 | Heat transfer tube having grooved inner surface and production method therefor |
| US6026892A (en) * | 1996-09-13 | 2000-02-22 | Poongsan Corporation | Heat transfer tube with cross-grooved inner surface and manufacturing method thereof |
| US20030111215A1 (en) * | 2000-08-25 | 2003-06-19 | Christoph Walther | Internally finned heat transfer tube with staggered fins of varying height |
-
2013
- 2013-08-05 CN CN2013103359666A patent/CN103433323A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2136093Y (en) * | 1992-08-28 | 1993-06-16 | 谢祖琴 | Hand electric scraper |
| CN1148523A (en) * | 1995-04-26 | 1997-04-30 | 阿尔卡泰尔电缆公司 | Method for making internal channelled tube for heat-exchanging device |
| CN1165287A (en) * | 1995-10-19 | 1997-11-19 | 三菱伸铜株式会社 | Heat transfer tube having grooved inner surface and production method therefor |
| US6026892A (en) * | 1996-09-13 | 2000-02-22 | Poongsan Corporation | Heat transfer tube with cross-grooved inner surface and manufacturing method thereof |
| US20030111215A1 (en) * | 2000-08-25 | 2003-06-19 | Christoph Walther | Internally finned heat transfer tube with staggered fins of varying height |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103769831A (en) * | 2014-01-15 | 2014-05-07 | 江西理工大学 | Production process of aluminum high-efficiency heat transfer pipe |
| CN104101246A (en) * | 2014-06-26 | 2014-10-15 | 江苏天潭科技材料有限公司 | Heat exchange inner thread pipe and production method thereof |
| CN107614136A (en) * | 2015-05-28 | 2018-01-19 | 三菱铝株式会社 | The manufacture device of the pipe of manufacture method and inner surface with helicla flute of pipe of the inner surface with helicla flute |
| US10232421B2 (en) | 2015-05-28 | 2019-03-19 | Mitsubishi Alumnium Co., Ltd. | Method of producing inner spiral grooved tube and apparatus for producing inner spiral grooved tube |
| CN107614136B (en) * | 2015-05-28 | 2019-05-14 | 三菱铝株式会社 | The manufacturing device of the pipe of manufacturing method and inner surface with helicla flute of pipe of the inner surface with helicla flute |
| US11052443B2 (en) | 2015-05-28 | 2021-07-06 | Mitsubishi Aluminum Co., Ltd. | Method of producing inner spiral grooved tube and apparatus for producing inner spiral grooved tube |
| CN112222219A (en) * | 2019-06-30 | 2021-01-15 | 合肥太通制冷科技有限公司 | Process for forming internal thread metal tube by welding method |
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| ASS | Succession or assignment of patent right |
Owner name: JIANGSU LILONG ELECTRIC TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: JIANGSU TIANTAN TECHNOLOGY MATERIAL CO., LTD. Effective date: 20140108 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Effective date of registration: 20140108 Address after: 213300 Jiangsu Province, Changzhou City, Liyang Economic Development Zone Industrial Park Road No. 5 A Applicant after: Jiangsu Lilong Electrical Technology Co. Ltd. Address before: 213300 Jiangsu Province, Changzhou City, Liyang Economic Development Zone Industrial Park Road No. 5 A Applicant before: Jiangsu TIANTAN Tech-Material Co., Ltd. |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20131211 |