CN116144987A - Corrosion-resistant condenser header and preparation method thereof - Google Patents
Corrosion-resistant condenser header and preparation method thereof Download PDFInfo
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- CN116144987A CN116144987A CN202211674779.6A CN202211674779A CN116144987A CN 116144987 A CN116144987 A CN 116144987A CN 202211674779 A CN202211674779 A CN 202211674779A CN 116144987 A CN116144987 A CN 116144987A
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- 238000005260 corrosion Methods 0.000 title claims abstract description 21
- 230000007797 corrosion Effects 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title description 4
- 238000003466 welding Methods 0.000 claims abstract description 61
- 239000011162 core material Substances 0.000 claims abstract description 34
- 239000000463 material Substances 0.000 claims abstract description 30
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 19
- 239000000956 alloy Substances 0.000 claims abstract description 19
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 18
- 239000012535 impurity Substances 0.000 claims abstract description 18
- 229910052742 iron Inorganic materials 0.000 claims abstract description 14
- 229910052802 copper Inorganic materials 0.000 claims abstract description 12
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 8
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 8
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 6
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 229910052706 scandium Inorganic materials 0.000 claims abstract description 6
- 230000004907 flux Effects 0.000 claims description 11
- 238000005476 soldering Methods 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 6
- 238000005219 brazing Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000000306 component Substances 0.000 description 9
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000012266 salt solution Substances 0.000 description 2
- 229910052727 yttrium Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/04—Condensers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/002—Resistance welding; Severing by resistance heating specially adapted for particular articles or work
- B23K11/008—Manufacturing of metallic grids or mats by spot welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
- B23K33/004—Filling of continuous seams
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
- F28F9/262—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators
- F28F9/268—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators by permanent joints, e.g. by welding
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The invention discloses a corrosion-resistant condenser header, which comprises a core material, and an outer skin material and an inner skin material which cover the core material; the alloy composition of the core material is as follows: less than or equal to 0.2 weight percent of Si, less than or equal to 0.5 weight percent of Fe, less than or equal to 0.05 weight percent of Cu,1 to 1.5 weight percent of Mn, less than or equal to 0.1 weight percent of Zn,0.05 to 0.2 weight percent of Ti, less than or equal to 0.1 weight percent of La, less than or equal to 0.1 weight percent of Ce, and the balance of aluminum and unavoidable impurities; the alloy components of the outer skin material are as follows: 7.2-10wt% of Si, less than or equal to 1wt% of Fe,0.7-1.5wt% of Zn, less than or equal to 0.1wt% of Ce, less than or equal to 0.1wt% of Y, and the balance of aluminum and unavoidable impurities; the alloy components of the inner skin material are as follows: 4.5 to 5.5 weight percent of Si, less than or equal to 1 weight percent of Fe,0.5 to 1.0 weight percent of Cu, less than or equal to 0.1 weight percent of Sc, and the balance of aluminum and unavoidable impurities. The condenser header pipe is provided with a welding seam structure at a welding position, the welding seam structure comprises a welding end A and a welding end B, and an included angle c is arranged between the welding end A and the welding end B. The invention effectively avoids the problems of air holes and unstable welding in the welding seam, and simultaneously improves the welding strength and corrosion resistance of the condenser by optimizing the material of the header pipe.
Description
Technical Field
The invention relates to the technical field of automobile air conditioner condensers, in particular to a corrosion-resistant condenser header and a preparation method thereof.
Background
The header is a core component of the parallel flow condenser, and is welded and connected with the ends of the flat tubes to form an internal passage of the refrigerant circulation; the header is also welded to the condenser bracket, the welded locations are subjected to external forces during the fixing of the condenser, and the condenser is located outside the front end of the vehicle, which requires higher strength and corrosion resistance from the header itself and from the various welded locations of the header.
The 3-series aluminum alloy core materials such as 3003 and 4-series aluminum alloy skin materials such as 4343 of the common rolled header plates can have the problems of more air holes, insufficient melting of a surface coating, unstable welding and the like in the lap joint of rolling welding seams and other welding seams; the weld site is difficult to cope with long-term salt solution corrosion under complex conditions. Especially in coastal areas and in winter areas where snow-melting agents are used in large quantities, salt solution corrosion is very likely to occur. With the occurrence of corrosion, the strength and the air tightness of the welded position are reduced.
Disclosure of Invention
The invention aims to provide a corrosion-resistant condenser header and a preparation method thereof, wherein a welding seam structure is favorable for flux flow and header surface cladding melting, and meanwhile, alloy components of a 3-series core material and a 4-series cladding material are optimized, so that the welding strength and corrosion resistance of a header rolling welding seam and other welding positions are improved.
To achieve the above object, the present application proposes a corrosion-resistant condenser header including a core material, and an outer skin material and an inner skin material covering the core material; the alloy composition of the core material is as follows: less than or equal to 0.2 weight percent of Si, less than or equal to 0.5 weight percent of Fe, less than or equal to 0.05 weight percent of Cu,1 to 1.5 weight percent of Mn, less than or equal to 0.1 weight percent of Zn,0.05 to 0.2 weight percent of Ti, less than or equal to 0.1 weight percent of La, less than or equal to 0.1 weight percent of Ce, and the balance of aluminum and unavoidable impurities; the alloy components of the outer skin material are as follows: 7.2-10wt% of Si, less than or equal to 1wt% of Fe,0.7-1.5wt% of Zn, less than or equal to 0.1wt% of Ce, less than or equal to 0.1wt% of Y, and the balance of aluminum and unavoidable impurities; the alloy components of the inner skin material are as follows: 4.5 to 5.5 weight percent of Si, less than or equal to 1 weight percent of Fe,0.5 to 1.0 weight percent of Cu, less than or equal to 0.1 weight percent of Sc, and the balance of aluminum and unavoidable impurities.
Further, the condenser header pipe is provided with a welding seam structure at a welding position, the welding seam structure comprises a welding end A and a welding end B, and an included angle c is arranged between the welding end A and the welding end B.
Furthermore, the inclined surface of the welding end B is covered on the inclined surface of the welding end A, and a gap is formed between the two inclined surfaces.
Further, the condenser header ensures that the gap opening is upward when being welded in the furnace.
The invention also provides a method for preparing the corrosion-resistant condenser core body, which comprises the following steps:
step 1: determining the upward direction of the condenser core body during furnace welding;
step 2: assembling a header, flat tubes, fins, pipelines and a bracket to form a condenser core body, and ensuring that the opening direction of a welding line included angle c of the header is upward when entering a furnace for welding;
step 3: spraying a soldering flux on the assembled condenser core body, wherein the soldering flux flows into a header welding seam included angle c;
step 4: the condenser core body is put into a furnace for brazing, and the soldering flux remaining in the included angle c of the welding line of the header can promote the melting of the skin material of the header at the temperature of 590-600 ℃, so that the welding end A and the welding end B are welded together.
Compared with the prior art, the technical scheme adopted by the invention has the advantages that: the invention provides a structure which is favorable for the soldering flux to be reserved on the surface of the header, promotes the melting of the skin material of the header, effectively avoids the problems of air holes and unstable welding in welding seams, and simultaneously improves the welding strength and corrosion resistance of the condenser by the optimized header material.
Drawings
FIG. 1 is a schematic view of a condenser header of the present invention;
FIG. 2 is a schematic view of a weld structure according to the present invention;
FIG. 3 is a schematic view of the structure of the condenser header of the present invention when it is in the furnace;
FIG. 4 is a schematic view of a condenser core structure according to the present invention;
FIG. 5 is a schematic view of the welded portion of the flat tube and header of the present invention;
FIG. 6 is a schematic view of the welded portion of the bracket and header of the present invention;
FIG. 7 is a schematic view of the welded portion of the pipe and header of the present invention.
The serial numbers in the figures illustrate: 1. a skin material; 2. a core material; 3. an inner skin material; 4. a header; 5. a bracket; 6. a fin; 7. a pipeline; 8. flat tube.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the application, i.e., the embodiments described are merely some, but not all, of the embodiments of the application.
Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to be within the scope of the present application.
The experimental methods used in the following examples are conventional methods unless otherwise specified.
Example 1
As shown in fig. 1, the present application provides a corrosion-resistant condenser header, specifically comprising a core material, and an outer skin material and an inner skin material covering the core material; the alloy composition of the core material is as follows: 0.2wt% Si,0.5wt% Fe,0.05wt% Cu,1% Mn,0.1wt% Zn,0.05wt% Ti,0.1wt% La,0.1wt% Ce, the balance being aluminum and unavoidable impurities; the alloy components of the outer skin material are as follows: 10wt% of Si, less than or equal to 1wt% of Fe,0.7wt% of Zn,0.1wt% of Ce,0.1wt% of Y, and the balance of aluminum and unavoidable impurities; the alloy components of the inner skin material are as follows: 5.5wt% Si,1wt% Fe,0.5wt% Cu,0.1wt% Sc, the balance being aluminum and unavoidable impurities.
As shown in fig. 2, the condenser header has a weld structure at the welding position, the weld structure includes a welding end a and a welding end B, an acute angle a is formed at the outer side of the welding end a, an acute angle B is formed at the inner side of the welding end B, the inclined surface of the welding end B covers the inclined surface of the welding end a, and a gap is formed between the two inclined surfaces, namely an angle c.
As shown in fig. 3, the condenser header is welded in the furnace to ensure that the slit opening is upward.
As shown in fig. 4, the present invention further provides a method for preparing a corrosion-resistant condenser core, comprising:
step 1: determining the upward direction of the condenser core body during furnace welding;
step 2: assembling a header, flat tubes, fins, pipelines and a bracket to form a condenser core body, and ensuring that the opening direction of a welding line included angle c of the header is upward when entering a furnace for welding;
step 3: spraying a soldering flux on the assembled condenser core body, wherein the soldering flux flows into a header welding seam included angle c;
step 4: the condenser core body is put into a furnace for brazing, and the soldering flux remaining in the included angle c of the welding line of the header can promote the melting of the skin material of the header at the temperature of 590-600 ℃, so that the welding end A and the welding end B are welded together.
Example 2
The difference from example 1 is that: the alloy composition of the core material is as follows: 0.15wt% Si,0.4wt% Fe,0.03wt% Cu,1.5wt% Mn,0.08wt% Zn,0.2wt% Ti,0.09wt% La,0.07wt% Ce, the balance being aluminum and unavoidable impurities; the alloy components of the outer skin material are as follows: 7.2wt% Si,0.95wt% Fe,1.5wt% Zn,0.09wt% Ce,0.08wt% Y, the balance being aluminum and unavoidable impurities; the alloy components of the inner skin material are as follows: 4.5wt% Si,0.98 wt% Fe,1.0wt% Cu,0.06wt% Sc, the balance being aluminum and unavoidable impurities.
Example 3
The difference from examples 1 and 2 is that: the alloy composition of the core material is as follows: 0.18wt% Si,0.48wt% Fe,0.04wt% Cu,1.2wt% Mn,0.07wt% Zn,0.1wt% Ti,0.06wt% La,0.05wt% Ce, the balance being aluminum and unavoidable impurities; the alloy components of the outer skin material are as follows: 9wt% Si,0.8wt% Fe,1wt% Zn,0.07wt% Ce,0.09wt% Y, the balance being aluminum and unavoidable impurities; the alloy components of the inner skin material are as follows: 5wt% Si,0.8wt% Fe,0.8wt% Cu,0.07wt% Sc, the balance being aluminum and unavoidable impurities.
5-7, respectively showing welding positions of the header, the flat pipe, the bracket and the pipeline, disassembling the brazed condenser core, making resin blocks at the welding positions of the header and each part, observing that the welding seams have no cracks, and the surface air holes, pores and inclusion ratio is less than 20%.
The foregoing descriptions of specific exemplary embodiments of the present invention are presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application to thereby enable one skilled in the art to make and utilize the invention in various exemplary embodiments and with various modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (5)
1. A corrosion resistant condenser header comprising a core material, and an outer skin material and an inner skin material covering the core material; the alloy composition of the core material is as follows: less than or equal to 0.2 weight percent of Si, less than or equal to 0.5 weight percent of Fe, less than or equal to 0.05 weight percent of Cu,1 to 1.5 weight percent of Mn, less than or equal to 0.1 weight percent of Zn,0.05 to 0.2 weight percent of Ti, less than or equal to 0.1 weight percent of La, less than or equal to 0.1 weight percent of Ce, and the balance of aluminum and unavoidable impurities; the alloy components of the outer skin material are as follows: 7.2-10wt% of Si, less than or equal to 1wt% of Fe,0.7-1.5wt% of Zn, less than or equal to 0.1wt% of Ce, less than or equal to 0.1wt% of Y, and the balance of aluminum and unavoidable impurities; the alloy components of the inner skin material are as follows: 4.5 to 5.5 weight percent of Si, less than or equal to 1 weight percent of Fe,0.5 to 1.0 weight percent of Cu, less than or equal to 0.1 weight percent of Sc, and the balance of aluminum and unavoidable impurities.
2. A corrosion resistant condenser header according to claim 1, wherein the condenser header has a weld configuration at the weld site, said weld configuration comprising weld end a and weld end B, said weld end a and weld end B being provided with an included angle c therebetween.
3. A corrosion resistant condenser header according to claim 3 wherein said weld end B inclined surface overlies said weld end a inclined surface with a gap therebetween.
4. A corrosion resistant condenser header according to claim 3 wherein the condenser header is furnace welded with the slit opening facing upwardly.
5. A method of making a corrosion resistant condenser core comprising:
step 1: determining the upward direction of the condenser core body during furnace welding, and ensuring the upward opening direction of the welding line included angle c of the header pipe;
step 2: assembling a header, flat tubes, fins, pipelines and a bracket to form a condenser core body, and ensuring that the opening direction of a welding line included angle c of the header is upward when entering a furnace for welding;
step 3: spraying a soldering flux on the assembled condenser core body, wherein the soldering flux flows into a header welding seam included angle c;
step 4: the condenser core body is put into a furnace for brazing, and the soldering flux remaining in the included angle c of the welding line of the header can promote the melting of the skin material of the header at the temperature of 590-600 ℃, so that the welding end A and the welding end B are welded together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211674779.6A CN116144987A (en) | 2022-12-26 | 2022-12-26 | Corrosion-resistant condenser header and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211674779.6A CN116144987A (en) | 2022-12-26 | 2022-12-26 | Corrosion-resistant condenser header and preparation method thereof |
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| CN116144987A true CN116144987A (en) | 2023-05-23 |
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| CN202211674779.6A Pending CN116144987A (en) | 2022-12-26 | 2022-12-26 | Corrosion-resistant condenser header and preparation method thereof |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1033449A (en) * | 1987-09-21 | 1989-06-21 | 冶金工业部钢铁研究总院 | Single layer soldering pipe and manufacture method thereof |
| CN101927588A (en) * | 2010-08-26 | 2010-12-29 | 南通恒秀铝热传输材料有限公司 | Novel compound brazed aluminum alloy material for heat exchanger of automobile |
| JP2011195890A (en) * | 2010-03-19 | 2011-10-06 | Sumitomo Light Metal Ind Ltd | Clad material of high-strength aluminum alloy excellent in brazability for heat exchanger |
| CN103158291A (en) * | 2011-12-14 | 2013-06-19 | 昭和电工株式会社 | Clad material |
| CN103343264A (en) * | 2013-07-15 | 2013-10-09 | 南通恒秀铝热传输材料有限公司 | Brazing type aluminum alloy material for household air conditioner and preparation method thereof |
| CN205021035U (en) * | 2015-09-30 | 2016-02-10 | 浙江三花股份有限公司 | Weld ring |
| CN107002184A (en) * | 2014-11-21 | 2017-08-01 | 株式会社Uacj | Aluminum alloy clad sheet for heat exchangers |
| CN113337759A (en) * | 2021-05-31 | 2021-09-03 | 上海华峰铝业股份有限公司 | Aluminum alloy composite tube sheet material for heat exchanger and skin material thereof |
-
2022
- 2022-12-26 CN CN202211674779.6A patent/CN116144987A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1033449A (en) * | 1987-09-21 | 1989-06-21 | 冶金工业部钢铁研究总院 | Single layer soldering pipe and manufacture method thereof |
| JP2011195890A (en) * | 2010-03-19 | 2011-10-06 | Sumitomo Light Metal Ind Ltd | Clad material of high-strength aluminum alloy excellent in brazability for heat exchanger |
| CN101927588A (en) * | 2010-08-26 | 2010-12-29 | 南通恒秀铝热传输材料有限公司 | Novel compound brazed aluminum alloy material for heat exchanger of automobile |
| CN103158291A (en) * | 2011-12-14 | 2013-06-19 | 昭和电工株式会社 | Clad material |
| CN103343264A (en) * | 2013-07-15 | 2013-10-09 | 南通恒秀铝热传输材料有限公司 | Brazing type aluminum alloy material for household air conditioner and preparation method thereof |
| CN107002184A (en) * | 2014-11-21 | 2017-08-01 | 株式会社Uacj | Aluminum alloy clad sheet for heat exchangers |
| CN205021035U (en) * | 2015-09-30 | 2016-02-10 | 浙江三花股份有限公司 | Weld ring |
| CN113337759A (en) * | 2021-05-31 | 2021-09-03 | 上海华峰铝业股份有限公司 | Aluminum alloy composite tube sheet material for heat exchanger and skin material thereof |
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