CN113566026A - Metal composite pipe and manufacturing method thereof - Google Patents
Metal composite pipe and manufacturing method thereof Download PDFInfo
- Publication number
- CN113566026A CN113566026A CN202110458222.8A CN202110458222A CN113566026A CN 113566026 A CN113566026 A CN 113566026A CN 202110458222 A CN202110458222 A CN 202110458222A CN 113566026 A CN113566026 A CN 113566026A
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- Prior art keywords
- tube
- metal composite
- composite tube
- base material
- manufacturing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/02—Rigid pipes of metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Arc Welding In General (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Laminated Bodies (AREA)
Abstract
The invention provides a metal composite tube and a manufacturing method thereof, wherein the metal composite tube comprises a base material tube and a surfacing layer, wherein: the weld overlay is made by overlaying a nickel-based, stainless steel, or cobalt-based material on a substrate tube made of carbon steel, alloy steel, or stainless steel using GMAW or LBW welding methods, and polishing the weld overlay using mechanical methods. The manufacturing method is not restricted by a production die, can be used for small-batch production, and has the advantages of relatively simple process, stable quality, high precision, metallurgical bonding of the multilayer and the base material, higher shear strength than that of the prior art and high production efficiency.
Description
Technical Field
The invention relates to the technical field of welding, in particular to a metal composite pipe and a manufacturing method thereof.
Background
The metal composite pipe is widely applied to the industrial fields of oil fields, chemical industry, electric power and the like. The commonly used manufacturing process of the metal composite pipe at present comprises a metallurgical fusion compounding method, an explosion forming method and a nesting forming compounding method. The metal composite pipe manufactured by the metallurgical fusion composite method has stable product quality, but because the process is complex, the quantity of the metal smelted in each furnace is large, and when customers demand special specifications or order quantity is small, the manufacturing cost is high or even the manufacturing cannot be realized; the metal composite pipe manufactured by the explosion forming method has unstable product quality, very complex production process and difficult accurate control; the metal composite pipe manufactured by the nesting forming method has the advantages that the base material and the multiple layers are only mechanically combined, and the application range is small.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a metal composite tube and a method for manufacturing the same, in which a build-up layer is welded to an outer surface of a base material tube and polished, so that the composite tube has a relatively simple manufacturing process, stable quality, high precision, and is capable of performing small-scale production, thereby improving production efficiency.
The embodiment of the invention adopts the technical scheme that:
in one aspect, an embodiment of the present invention provides a metal composite tube, including a substrate tube and a weld overlay, where the weld overlay is welded on an outer surface of the substrate tube, and a contact surface between the substrate tube and the weld overlay is a rough surface.
Compared with the traditional metal composite pipe, the surfacing welding method has the advantages that the surfacing layer is welded on the outer surface of the base material pipe, the surfacing is an economical and rapid process method for modifying the surface of the material, and the material with certain performance is overlaid on the surface of the part by using the welding method so as to improve the wear-resisting, heat-resisting, corrosion-resisting and other aspects of the part.
Further, the surfacing layer is made of nickel-based, stainless steel or cobalt-based materials.
Further, the thickness of the weld overlay is 0.5 to 5 mm.
Further, the thickness of the tube wall of the base material tube is 2.5-100 mm.
Further, the substrate tube is made of carbon steel, alloy steel, stainless steel, or a nickel-based material.
In another aspect, a method of making a metal composite tube for use in a metal composite tube, the metal composite tube comprising a substrate tube and a weld overlay, the method comprising:
overlaying the overlaying layer on the outer surface of the base material tube;
and polishing the overlaying layer.
Compared with the traditional metal composite tube, in the embodiment of the invention, the surfacing layer is built on the outer surface of the base material tube, the surfacing layer is various in materials, thickness and specification, is not restricted by a production die, can be produced in small batches, and has relatively simple process, stable quality, high precision, metallurgical bonding of the composite layer and the base material, higher shearing strength than that of the prior art and high production efficiency; in addition, the surfacing layer is polished, and compared with an unpolished surfacing pipe, the composite pipe has a smoother and smoother appearance and is not easy to accumulate ash and slag.
Further, a nickel-based, stainless steel, or cobalt-based material is deposited on the outer surface of the base pipe using a GMAW (Gas metal arc Welding) or LBW (Laser Beam Welding) method.
Further, the overlay layer is polished by using a mechanical polishing method.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic view of a metal composite tube according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
fig. 3 is a flow chart of the method for manufacturing the metal composite pipe according to the embodiment of the invention.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
The embodiments of the present invention will be further explained with reference to the drawings.
As shown in fig. 1, fig. 1 is a schematic view of a metal composite pipe according to an embodiment of the present invention.
Referring to fig. 1, in one aspect, an embodiment of the present invention provides a metal composite tube, which includes a substrate tube 100 and a weld overlay 110, wherein the weld overlay 110 is welded on an outer surface of the substrate tube 100, and in an embodiment, a contact surface between the substrate tube 100 and the weld overlay 110 is a rough surface.
Compared with the traditional metal composite pipe, the surfacing layer 110 is welded on the outer surface of the base material pipe 100 in the embodiment of the invention, and the surfacing is an economical and rapid process method for material surface modification.
In one embodiment of the present invention, the overlay layer 110 is made of stainless steel, nickel-based or cobalt-based material, and the stainless steel has a certain capability of acid-base corrosion resistance and a certain capability of wear resistance; the nickel-based alloy has good comprehensive performance, good acid and alkali corrosion resistance, higher strength at high temperature and certain oxidation and corrosion resistance; cobalt-based alloys can be classified into cobalt-based wear-resistant alloys, cobalt-based high-temperature-resistant alloys, and cobalt-based wear-resistant and aqueous solution corrosion-resistant alloys. In general, cobalt-based alloys have both wear resistance and high temperature resistance or wear resistance and corrosion resistance, and some working conditions may require high temperature resistance, wear resistance and corrosion resistance.
As shown in fig. 2, fig. 2 is a sectional view of fig. 1.
Referring to fig. 2, in one embodiment of the present invention, the thickness of the weld overlay 110 is 0.5 to 5 mm.
In one embodiment of the invention, the substrate tube has a wall thickness of 2.5 to 100 mm.
In one embodiment of the invention, the substrate tube 100 is made of carbon steel, alloy steel, stainless steel, or a nickel-based material.
Carbon steel and alloy steel pipes are commonly used for heating surface pipes with the inner wall temperature of a boiler being less than or equal to 460 ℃ or 560 ℃, such as 20G and 15CrMoG, and have the characteristics of low price, good weldability and better cold and hot forming performance, but the carbon steel and alloy steel pipes have poor corrosion resistance and wear resistance and are easy to be thinned and lose efficacy in the use process; the stainless steel tube is commonly used for a heating surface tube with the wall temperature of less than or equal to 670 ℃ in a boiler, such as 07Cr19Ni10, has the characteristics of certain acid-base salt corrosion resistance and wear resistance, good weldability and better cold and hot forming performance, but has higher price and still has the risk of thinning failure in a high-temperature corrosion environment; the nickel-based material pipe has good corrosion resistance, but is high in price, so that the nickel-based material pipe is generally designed to be used only by thin-wall pipes, and the nickel-based material pipe is easy to be thinned.
As shown in fig. 3, fig. 3 is a flow chart of manufacturing a metal composite pipe according to an embodiment of the present invention.
Referring to fig. 3, in another aspect, a method of making a metal composite tube for use in a metal composite tube, the metal composite tube comprising a substrate tube 100 and a weld overlay 110, the method comprising:
s100, overlaying a surfacing layer 110 on the outer surface of the base material tube 100;
s200, polishing the overlaying layer 110.
Compared with the traditional metal composite tube, in the embodiment of the invention, the surfacing layer 110 is overlaid on the outer surface of the substrate tube 100, the surfacing layer 110 is various in materials, thickness and specification, is not restricted by production dies, can be produced in small batches, and has the advantages of relatively simple process, stable quality, high precision, metallurgical bonding of the composite layer and the substrate, higher shear strength than that of the prior art and high production efficiency; in addition, the surfacing layer 110 is polished, and compared with an unpolished surfacing pipe, the composite pipe has a smoother and smoother appearance and is not easy to accumulate ash and slag.
In one embodiment of the invention, a nickel-based, stainless steel, or cobalt-based material is deposited on the outer surface of the substrate tube 100 using GMAW and LBW processes.
In one embodiment of the present invention, the weld overlay 110 is polished using a mechanical polishing process.
While the preferred embodiments and basic principles of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the embodiments, but is intended to cover various modifications, equivalents and alternatives falling within the scope of the invention as claimed.
Claims (8)
1. The metal composite tube is characterized by comprising a base material tube and a surfacing layer, wherein the surfacing layer is welded on the outer surface of the base material tube.
2. The metal composite tube of claim 1, wherein: the surfacing layer is made of nickel-based, stainless steel or cobalt-based materials.
3. The metal composite tube of claim 1, wherein: the thickness of the surfacing layer is 0.5 to 5 mm.
4. The metal composite tube of claim 1, wherein: the thickness of the tube wall of the substrate tube is 2.5-100 mm.
5. The metal composite tube of claim 1, wherein: the substrate tube is made of carbon steel, alloy steel, stainless steel or a nickel-based material.
6. A method of making a metal composite tube for use in a metal composite tube, the metal composite tube comprising a substrate tube and a weld overlay, the method comprising:
overlaying the overlaying layer on the outer surface of the base material tube;
and polishing the overlaying layer.
7. A method of making a metal composite tube according to claim 6, said weld overlay being deposited on the exterior surface of said substrate tube, wherein: a nickel-based, stainless steel, or cobalt-based material is deposited on the substrate tube exterior surface using GMAW or LBW methods.
8. The method of fabricating a metal composite tube according to claim 6, polishing said weld overlay, wherein: and polishing the overlaying layer by using a mechanical polishing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2021/093114 WO2022088648A1 (en) | 2020-10-29 | 2021-05-11 | Metal composite pipe and manufacturing method therefor |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020111807151 | 2020-10-29 | ||
| CN202011180715.1A CN112303344A (en) | 2020-10-29 | 2020-10-29 | Metal composite pipe and manufacturing method thereof |
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| CN113566026A true CN113566026A (en) | 2021-10-29 |
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| CN202011180715.1A Pending CN112303344A (en) | 2020-10-29 | 2020-10-29 | Metal composite pipe and manufacturing method thereof |
| CN202110458222.8A Pending CN113566026A (en) | 2020-10-29 | 2021-04-27 | Metal composite pipe and manufacturing method thereof |
| CN202111242840.5A Pending CN113864537A (en) | 2020-10-29 | 2021-10-25 | Preparation method and application of composite pipe |
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| CN202011180715.1A Pending CN112303344A (en) | 2020-10-29 | 2020-10-29 | Metal composite pipe and manufacturing method thereof |
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| CN202111242840.5A Pending CN113864537A (en) | 2020-10-29 | 2021-10-25 | Preparation method and application of composite pipe |
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| WO (1) | WO2022088648A1 (en) |
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| CN112303344A (en) * | 2020-10-29 | 2021-02-02 | 广东博盈特焊技术股份有限公司 | Metal composite pipe and manufacturing method thereof |
| CN114414176B (en) * | 2022-03-30 | 2022-06-03 | 风凯换热器制造(常州)有限公司 | Processing method and leakage detection method for double-layer conveying pipeline |
| CN115679041B (en) * | 2022-11-02 | 2024-01-19 | 包头钢铁（集团）有限责任公司 | Rapid smelting method of low-carbon aluminum-free deoxidized low-sulfur steel |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN112303344A (en) | 2021-02-02 |
| CN113864537A (en) | 2021-12-31 |
| WO2022088648A1 (en) | 2022-05-05 |
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