CN103506821A - Production method of low-stress copper steel compound welded pipe - Google Patents
Production method of low-stress copper steel compound welded pipe Download PDFInfo
- Publication number
- CN103506821A CN103506821A CN201210216697.7A CN201210216697A CN103506821A CN 103506821 A CN103506821 A CN 103506821A CN 201210216697 A CN201210216697 A CN 201210216697A CN 103506821 A CN103506821 A CN 103506821A
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- Prior art keywords
- copper
- composite
- production method
- low stress
- steel
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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
- B21C37/08—Making tubes with welded or soldered seams
Abstract
The invention discloses a pipe fitting used for a heat exchanger, and particularly relates to a production method of a low-stress copper steel compound welded pipe. The pipe fitting produced through the method and used for the heat exchanger comprise copper layers (2) and a steel layer (3), wherein the steel layer (3) is arranged between the two copper layers (2), and padding copper solder (1) is welded to mutually contacting positions of two sides of the pipe formed by bending the copper layers (2) and the steel layer (3) by utilizing low stress. The production method of the low-stress copper steel compound welded pipe has the advantages that more than 80% of a heat conduction effect of copper and 100% of a corrosion resistance effect are achieved with about 50% of the price of copper, the corrosion resistance effect is good, the mechanical property of the copper layers at welding joints can be consistent with that of other positions by adopting the low-stress copper welding rods for welding, the mechanical performance is good, and the low-stress copper steel compound welded pipe has the tenacity and strength of steel.
Description
Technical field
The present invention relates to a kind of pipe fitting for heat exchanger, relate in particular to a kind of production method of low stress copper steel composite welded pipe.
Background technology
In the prior art, the pipe fitting for heat exchanger on the equipment such as refrigerating and heating device, refrigerator and air conditioner or domestic water engineering is all generally to adopt copper pipe.
(1) copper pipe heat conduction, corrosion-resistant, etc. various aspects of performance good, durable in use and hygiene and health, but cost is high, the day by day shortage of copper resource;
(2) with straight carbon steel pipe, substitute perishable;
(3) copper facing steel pipe cost is low, but copper plate is too thin, and copper layer easily comes off, and current production technology there is no method, and to tube wall, plating is coated with, and therefore can not fundamentally solve inner wall anti-corrosive problem.And there is environmental pollution problem in plating production process.
Summary of the invention
The object of the present invention is to provide a kind of production method of low stress copper steel composite welded pipe, with expectation, can to solve the existing copper pipe cost for heat exchanger on the equipment such as refrigerating and heating device, refrigerator and air conditioner or domestic water engineering too high, the weak and problem that easily causes environmental pollution of anti-corrosion capability.
For addressing the above problem, the technical solution used in the present invention is:
A production method for low stress copper steel composite welded pipe, its production method is as follows:
Choose thinner copper layer and steel layer as raw material;
The composite surface of copper layer and steel layer is polished and steel layer is arranged between copper layer and carries out composite rolling, form composite band;
Composite band after composite rolling is annealed;
Composite band is carried out to finish rolling, surfacing, straightening control template;
Composite band is sheared out to width and the weight needing;
Composite band is squeezed into tubulose, and the place of being in contact with one another, both sides after becoming tubulose is carried out to low stress welding with filling spelter solder.
For making the present invention play better technique effect:
Further technical scheme is can carry out finish rolling to the thickness of composite band after above-mentioned annealing operation.
Further technical scheme is above-mentioned the thickness of composite band to be carried out it being annealed after finish rolling again, then carries out smooth, straightening and control template.
Further technical scheme is that above-mentioned annealing is temperature diffusion and the soft annealing of 500 ℃ to 1000 ℃.
Further technical scheme is in above-mentioned annealing process, and can make at the holding stage of 500 ℃ to 1000 ℃ composite carry out metallurgical junction merging at faying face becomes firmly composite board of combination.
Further technical scheme is can flatten and polishing the inside and outside surface of pipe after above-mentioned low stress welding sequence.
When further technical scheme is above-mentioned low stress welding, welding temperature is between 700 ℃ to 1100 ℃.
Further technical scheme is above-mentionedly before composite rolling, with cleaning machine, copper layer and steel layer surface to be cleaned.
The beneficial effect that adopts technique scheme to produce is: the copper bed thickness of a kind of low stress copper steel composite welded pipe that the present invention produces and even, copper content accounts for 10%～20%, with the price of copper price 50% left and right, reaches the heat-conducting effect of 80% above copper and 100% anticorrosion effect; Anticorrosion ability is good, adopts the welding of low stress copper arc welding electrode, can make commissure copper layer all consistent with other positions with mechanical performance; Satisfactory mechanical property, possesses toughness and the intensity of steel, so be specially adapted to need the pipeline engineering of corrosion-and high-temp-resistant and high-intensity performance requirement.
Accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment of production method of a kind of low stress copper steel of the present invention composite welded pipe.
The specific embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Fig. 1 shows an embodiment of the production method of a kind of low stress copper steel of the present invention composite welded pipe: a kind of production method of low stress copper steel composite welded pipe, and its production method is as follows:
Choose thinner copper layer 2 and steel layer 3 as raw material;
The composite surface of copper layer 2 and steel layer 3 is polished and steel layer is arranged between copper layer and carries out composite rolling, form composite band;
Composite band after composite rolling is annealed;
Composite band is carried out to finish rolling, surfacing, straightening control template;
Composite band is sheared out to width and the weight needing;
Composite band is squeezed into tubulose, and the place of being in contact with one another, both sides after becoming tubulose is carried out to low stress welding with filling spelter solder 1.
Another embodiment of a kind of production method of low stress copper steel composite welded pipe according to the present invention, can carry out finish rolling to the thickness of composite band after annealing operation.According to the present invention, an a kind of preferred embodiment of production method of low stress copper steel composite welded pipe, carries out it being annealed after finish rolling to the thickness of composite band again, then carries out smooth, straightening and control template.
Another embodiment of a kind of production method of low stress copper steel composite welded pipe according to the present invention, annealing is temperature diffusion and the soft annealing of 500 ℃ to 1000 ℃.
Another embodiment of a kind of production method of low stress copper steel composite welded pipe according to the present invention, in annealing process, can make at the holding stage of 500 ℃ to 1000 ℃ composite carry out metallurgical junction merging at faying face becomes firmly composite board of combination.
Another embodiment of a kind of production method of low stress copper steel composite welded pipe according to the present invention, can flatten and polishing the inside and outside surface of pipe after low stress welding sequence.
Another embodiment of a kind of production method of low stress copper steel composite welded pipe according to the present invention, during low stress welding, welding temperature is between 700 ℃ to 1100 ℃.
Another embodiment of a kind of production method of low stress copper steel composite welded pipe according to the present invention cleaned copper layer 2 and steel layer 3 surface with cleaning machine before composite rolling.
Another embodiment of a kind of production method of low stress copper steel composite welded pipe according to the present invention, after the operation of the various embodiments described above completes, can stack and pack finished product welded tube with unloading rack.
" embodiment " that spoken of in this manual, " another embodiment ", " embodiment ", " preferred embodiment " etc., the specific features, structure or the feature that refer in conjunction with this embodiment description are included at least one embodiment of the application's generality description.In description, a plurality of local appearance statement of the same race is not necessarily to refer to same embodiment.Furthermore, while describing a specific features, structure or feature in conjunction with arbitrary embodiment, what advocate is in conjunction with other embodiment, to realize this feature, structure or feature also to fall within the scope of the invention.
Although with reference to a plurality of explanatory embodiment of the present invention, invention has been described here, but, should be appreciated that, those skilled in the art can design a lot of other modification and embodiments, and these are revised and within embodiment will drop on the disclosed principle scope and spirit of the application.More particularly, in the scope of, accompanying drawing open in the application and claim, can carry out multiple modification and improvement to the building block of subject combination layout and/or layout.Except modification that building block and/or layout are carried out with improving, to those skilled in the art, other purposes will be also obvious.
Claims (7)
1. a production method for low stress copper steel composite welded pipe, is characterized in that production method is as follows:
Choose thinner copper layer (2) and steel layer (3) as raw material;
The composite surface of copper layer (2) and steel layer (3) is polished and steel layer is arranged between copper layer and carries out composite rolling, form composite band;
Composite band after composite rolling is annealed;
Composite band is carried out to finish rolling, surfacing, straightening control template;
Composite band is sheared out to width and the weight needing;
Composite band is squeezed into tubulose, and the place of being in contact with one another, both sides after becoming tubulose is carried out to low stress welding with filling spelter solder (1).
2. the production method of a kind of low stress copper steel composite welded pipe according to claim 1, is characterized in that: after described annealing operation, can carry out finish rolling to the thickness of composite band.
3. the production method of a kind of low stress copper steel composite welded pipe according to claim 2, is characterized in that: described the thickness of composite band is carried out it being annealed after finish rolling again, then carry out smooth, straightening and control template.
4. according to the production method of a kind of low stress copper steel composite welded pipe described in claim 1 or 3, it is characterized in that: described annealing is temperature diffusion and the soft annealing of 500 ℃ to 1000 ℃.
5. according to the production method of a kind of low stress copper steel composite welded pipe described in claim 1 or 3, it is characterized in that: after described low stress welding sequence, can flatten and polishing the inside and outside surface of pipe.
6. according to the production method of a kind of low stress copper steel composite welded pipe described in claim 1 or 3, it is characterized in that: during described low stress welding, welding temperature is between 700 ℃ to 1100 ℃.
7. according to the production method of a kind of low stress copper steel composite welded pipe described in claim 1 or 3, it is characterized in that: before composite rolling, with cleaning machine, copper layer (2) and steel layer (3) surface are cleaned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210216697.7A CN103506821A (en) | 2012-06-28 | 2012-06-28 | Production method of low-stress copper steel compound welded pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210216697.7A CN103506821A (en) | 2012-06-28 | 2012-06-28 | Production method of low-stress copper steel compound welded pipe |
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| Publication Number | Publication Date |
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| CN103506821A true CN103506821A (en) | 2014-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210216697.7A Pending CN103506821A (en) | 2012-06-28 | 2012-06-28 | Production method of low-stress copper steel compound welded pipe |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104085146A (en) * | 2014-06-05 | 2014-10-08 | 宁波宇能复合铜带有限公司 | Method for employing copper-steel composite board to prevent adhesion corrosion of marine organisms and preparation method for copper-steel composite board |
| CN107053772A (en) * | 2017-05-08 | 2017-08-18 | 张呈太 | A kind of carton corrugation processing Corrugator roller |
| CN107838221A (en) * | 2017-11-07 | 2018-03-27 | 浙江义腾特种钢管有限公司 | A kind of steel tube seamless handling process |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2828960A1 (en) * | 1978-06-28 | 1980-01-03 | Mecano Bundy Gmbh | METHOD AND SYSTEM FOR THE PRODUCTION OF MULTIPLE PIPES |
| CN1037201A (en) * | 1988-04-26 | 1989-11-15 | 哈尔滨冶金研究所 | Copper-clad-steel bimetallic tube and manufacture method thereof |
| US5163602A (en) * | 1990-02-03 | 1992-11-17 | Usui Kokusai Sangyo Kaisha-Ltd. | Multi-walled steel pipe, a method of making the same and a metal strip for use in making the same |
| CN101885136A (en) * | 2010-06-25 | 2010-11-17 | 无锡天龙钢管有限公司 | Production process of special steel pipe for air-conditioning compressor casing |
| CN102107233A (en) * | 2010-12-23 | 2011-06-29 | 江苏其元集团有限公司 | Method for manufacturing steel/copper composite welded pipe |
| CN102107232A (en) * | 2010-12-23 | 2011-06-29 | 江苏其元集团有限公司 | Method for manufacturing steel-copper composite welded tube |
-
2012
- 2012-06-28 CN CN201210216697.7A patent/CN103506821A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2828960A1 (en) * | 1978-06-28 | 1980-01-03 | Mecano Bundy Gmbh | METHOD AND SYSTEM FOR THE PRODUCTION OF MULTIPLE PIPES |
| CN1037201A (en) * | 1988-04-26 | 1989-11-15 | 哈尔滨冶金研究所 | Copper-clad-steel bimetallic tube and manufacture method thereof |
| US5163602A (en) * | 1990-02-03 | 1992-11-17 | Usui Kokusai Sangyo Kaisha-Ltd. | Multi-walled steel pipe, a method of making the same and a metal strip for use in making the same |
| CN101885136A (en) * | 2010-06-25 | 2010-11-17 | 无锡天龙钢管有限公司 | Production process of special steel pipe for air-conditioning compressor casing |
| CN102107233A (en) * | 2010-12-23 | 2011-06-29 | 江苏其元集团有限公司 | Method for manufacturing steel/copper composite welded pipe |
| CN102107232A (en) * | 2010-12-23 | 2011-06-29 | 江苏其元集团有限公司 | Method for manufacturing steel-copper composite welded tube |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104085146A (en) * | 2014-06-05 | 2014-10-08 | 宁波宇能复合铜带有限公司 | Method for employing copper-steel composite board to prevent adhesion corrosion of marine organisms and preparation method for copper-steel composite board |
| CN107053772A (en) * | 2017-05-08 | 2017-08-18 | 张呈太 | A kind of carton corrugation processing Corrugator roller |
| CN107838221A (en) * | 2017-11-07 | 2018-03-27 | 浙江义腾特种钢管有限公司 | A kind of steel tube seamless handling process |
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Application publication date: 20140115 |
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