CN105583541B - A kind of two devices match somebody with somebody tube welding process - Google Patents
A kind of two devices match somebody with somebody tube welding process Download PDFInfo
- Publication number
- CN105583541B CN105583541B CN201610050267.0A CN201610050267A CN105583541B CN 105583541 B CN105583541 B CN 105583541B CN 201610050267 A CN201610050267 A CN 201610050267A CN 105583541 B CN105583541 B CN 105583541B
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- Prior art keywords
- copper pipe
- solder
- welding
- somebody
- welding process
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Classifications
-
- 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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Arc Welding In General (AREA)
Abstract
Match somebody with somebody tube welding process the invention discloses a kind of two device, comprise the following steps：First copper pipe and the second copper pipe are surface-treated, the second copper pipe is coaxially inserted in the first copper pipe；Under nitrogen atmosphere protection; welded using the low first kind solder of silver content; solder flux position be from the second copper pipe End to the first copper pipe End extension L1 stop; welded using the high Equations of The Second Kind solder of silver content; welding position be from the welding terminal of first kind solder to the first copper pipe End extension L2 stop; after the completion of welding, the natural cooling under nitrogen atmosphere protection.The welding procedure can improve the welding quality of weld, so as to improve the reliability of pipe arrangement welding, two device pipe arrangements of the copper pipe aluminum fin being specifically for use in air-conditioning parts, it is possible to decrease the risk of refrigerant leakage, reach the purpose of environmental protection.
Description
Technical field
The present invention relates to a kind of welding procedure, and in particular to a kind of welding procedure of two devices pipe arrangement.
Background technology
As the improvement of people's living standards, existing for inhabitation, the comfort level travelled requirement all more and more highers, thus people
Comfortableness and stability when by bus for on-board air conditioner are all paid special attention to, and the air-conditioning use environment of bus is compared to common
Car air-conditioning, domestic air conditioning use environment it is more severe, two device pipe arrangements of copper pipe aluminum fin are leakages in pipe-line system
One of rate highest position, in consideration of it, how to improve the reliability of the device pipe arrangement weld of automobile air conditioning system two, is prevented because at pipe arrangement
It is the big problem of urgently to be resolved hurrily one to leak refrigerant influence comfort of passenger, influence atmospheric environment.
The content of the invention
To solve the deficiencies in the prior art, it is an object of the invention to provide a kind of welding procedure of two devices pipe arrangement, to carry
The reliability of high weld.
In order to realize above-mentioned target, the present invention is adopted the following technical scheme that：
A kind of two devices match somebody with somebody tube welding process, comprise the following steps：
S1, the first copper pipe and the second copper pipe are surface-treated, the second copper pipe is coaxially inserted in the first copper pipe, is inserted in
Depth is h；
S2, under nitrogen atmosphere protection, welded using the low first kind solder of silver content, welding position is from second
Copper pipe End, which is risen to the first copper pipe End extension L1, to be stopped, according to the requirement of the weld strength of different tube diameters copper pipe, L1 length controls
Scope processed is：5mm≤L1≤10mm；
S3, under nitrogen atmosphere protection, welded using the high Equations of The Second Kind solder of silver content, welding position is from first
The welding terminal of class solder, which is risen to the first copper pipe End extension L2, to be stopped, according to the requirement of the weld strength of different tube diameters copper pipe,
L2 length control ranges are：3mm≤L2≤6mm；
After the completion of S4, welding, the natural cooling under nitrogen atmosphere protection.
Preferably, foregoing first kind solder is the strip silver-bearing copper phosphorus welding rod that silver-colored weight/mass percentage composition is 5%, by increasing capacitance it is possible to increase
The structural strength of pipe arrangement welding position.
It is highly preferred that the strip silver-bearing copper phosphorus welding rod that it is 15% that foregoing Equations of The Second Kind solder, which is silver-colored weight/mass percentage composition, Neng Gouti
The fracture toughness of high pipe arrangement welding position.
Specifically, 0.6≤L2/L1≤0.8, and (L1+L2) ＞ h, such structure design ensure that pipe arrangement weld part
Position ensure it is rigid on the basis of, the certain toughness of local increase improves the reliability and security of whole welding position.
More specifically, carrying out soldering and sealing to the welding destination county of foregoing Equations of The Second Kind solder, solder is formed with the first copper pipe End
Soldering and sealing angle be α, α is preferably 135 °, and welding terminal periphery is smooth, to increase the steadiness and sealing of soldering and sealing mouthful, is protected
Demonstrate,prove soldering and sealing root through welding, ensure welding quality and bonding strength.
The present invention is advantageous in that：In the welding procedure of the present invention, for different welding positions, difference is employed
The solder of physical and chemical properties, the low first kind solder of silver content can increase the rigidity of welding position, silver content it is high
Two class solders can then improve the toughness of welding position, so as to ensure the reliability of pipe arrangement weld, it is to avoid the turnover of two device core bodys, peace
Be filled with and vehicle driving conditions in the vibration that produces weld is damaged, so as to reduce the leakage of refrigerant in two device core bodys
Risk, improves the reliability and security of operation of air conditioner, it is ensured that automobile air conditioning system uses safe and pollution-free；Moreover, welding is completed
The natural cooling under nitrogen atmosphere protection, can avoid cooling procedure from having undesirable effect the intensity of welding position afterwards.
Brief description of the drawings
Fig. 1 is that a kind of two device of the present invention matches somebody with somebody the welded condition schematic diagram of tube welding process；
The implication of reference in figure：1st, the first copper pipe；2nd, the second copper pipe；3rd, welding rod；L1, the first solder length；L2,
Two solder length；H, it is inserted in depth；α, soldering and sealing angle.
Embodiment
Make specific introduce to the present invention below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1, two devices of the invention can be applied to air-conditioning with tube welding process, comprise the following steps：
S1, the first copper pipe 1 and the second copper pipe 2 are surface-treated, the second copper pipe 2 are coaxially inserted in the first copper pipe 1,
Depth is inserted in for h；
S2, nitrogen atmosphere protection under, it is low using silver content（For Equations of The Second Kind solder）First kind solder enter
Row welding, welding position is stops from the end of the second copper pipe 2 to the end of the first copper pipe 1 extension L1, according to different tube diameters copper pipe
Weld strength requirement, L1 length control ranges are：5mm≤L1≤10mm；
S3, under nitrogen atmosphere protection, welded using the high Equations of The Second Kind solder of silver content, welding position is from first
The welding terminal of class solder, which is risen to the end of the first copper pipe 1 extension L2, to be stopped, according to the requirement of the weld strength of different tube diameters copper pipe,
L2 length control ranges are：3mm≤L2≤6mm；
After the completion of S4, welding, the natural cooling under nitrogen atmosphere protection.
In the present embodiment, the strip silver-bearing copper phosphorus welding rod 3 that first kind solder is 5% from silver-colored weight/mass percentage composition, the weldering
Bar 3 has excellent processing performance, it is easy to gap is filled up, so as to improve weld strength；Equations of The Second Kind solder selects silver amount percentage
Content is 15% strip silver-bearing copper phosphorus welding rod 3, and the welding rod 3 has excellent processing performance, and fusing point is low, wetability is good, easily
In filling up gap, intensity is high, plasticity is good, and auxiliary welding can also be played a part of by adding phosphorus, and Equations of The Second Kind solder can improve welding
The toughness at position, so as to be further ensured that the reliability of pipe arrangement weld.
Specifically, 0.6≤L2/L1≤0.8, and (L1+L2) ＞ h, L1 welding sections are based on rigidity, L2 welding sections compare L1
Welding section, silver-colored weight/mass percentage composition generates change, therefore improves welding toughness.In actual process, we can be according to copper pipe
Two sections of solders length L1 and L2 are adjusted flexibly in caliber, the difference of solder, and are not limited to above-mentioned proportion requirement.
It should be strongly noted that the welding destination county in Equations of The Second Kind solder should carry out soldering and sealing processing, as shown in figure 1, the
The soldering and sealing angle that two class solders and the end of the first copper pipe 1 are formed is that α is 135 °, and welding terminal periphery is smooth.So, seal
The possible angle of weldering adds the steadiness of soldering opening, and smooth welding terminal ensure that soldering opening root through welding, ensure welding
Quality and bonding strength.
To sum up, the present invention can adjust L1 and L2 sizes according to the difference of copper pipe caliber, solder, by selecting silver content not
With the solder position different to two device pipe arrangements weld, reach to welding position rigidity and toughness while the requirement having concurrently,
Improve the stability and reliability of welding, it is to avoid product in use, to weld part bit loss hinder by jerk, causes interior
The leakage of portion's refrigerant, it is ensured that using for air-conditioning is safe.
The basic principles, principal features and advantages of the present invention have been shown and described above.The technical staff of the industry should
Understand, the invention is not limited in any way for above-described embodiment, it is all to be obtained by the way of equivalent substitution or equivalent transformation
Technical scheme, all falls within protection scope of the present invention.
Claims (7)
1. a kind of two device matches somebody with somebody tube welding process, it is characterised in that comprise the following steps：
S1, the first copper pipe and the second copper pipe are surface-treated, the second copper pipe is coaxially inserted in the first copper pipe, depth is inserted in
For h；
S2, nitrogen atmosphere protection under, welded using first kind solder, welding position for from the second copper pipe End to
First copper pipe End extension L1 stops, 5mm≤L1≤10mm；
S3, under nitrogen atmosphere protection, welded using Equations of The Second Kind solder, welding position is from the welding of first kind solder end
Light to the first copper pipe End extension L2 and stop, 3mm≤L2≤6mm；
After the completion of S4, welding, the natural cooling under nitrogen atmosphere protection；
The silver content of the first kind solder is less than the silver content of Equations of The Second Kind solder.
2. a kind of two device according to claim 1 matches somebody with somebody tube welding process, it is characterised in that the first kind solder is：Silver
Weight/mass percentage composition is 5% silver-bearing copper phosphorus welding rod.
3. a kind of two device according to claim 1 matches somebody with somebody tube welding process, it is characterised in that the Equations of The Second Kind solder is：Silver
Weight/mass percentage composition is 15% silver-bearing copper phosphorus welding rod.
4. a kind of two device according to claim 1 matches somebody with somebody tube welding process, it is characterised in that 0.6≤L2/L1≤0.8, and
(L1+L2) ＞ h.
5. a kind of two device according to claim 1 matches somebody with somebody tube welding process, it is characterised in that the first kind solder and second
Class solder is strip solder.
6. a kind of two device according to claim any one of 1-5 matches somebody with somebody tube welding process, it is characterised in that to the Equations of The Second Kind
The welding destination county of solder carries out soldering and sealing, and the soldering and sealing angle that Equations of The Second Kind solder and the first copper pipe End are formed is α, and welds terminal
Periphery is smooth.
7. a kind of two device according to claim 6 matches somebody with somebody tube welding process, it is characterised in that the soldering and sealing angle [alpha] is 135 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610050267.0A CN105583541B (en) | 2016-01-26 | 2016-01-26 | A kind of two devices match somebody with somebody tube welding process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610050267.0A CN105583541B (en) | 2016-01-26 | 2016-01-26 | A kind of two devices match somebody with somebody tube welding process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105583541A CN105583541A (en) | 2016-05-18 |
| CN105583541B true CN105583541B (en) | 2017-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610050267.0A Active CN105583541B (en) | 2016-01-26 | 2016-01-26 | A kind of two devices match somebody with somebody tube welding process |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107781541B (en) * | 2016-08-24 | 2019-12-03 | 浙江三花智能控制股份有限公司 | A kind of tube assembly |
| CN111644774A (en) * | 2020-06-08 | 2020-09-11 | 二重集团（镇江）重型装备厂有限责任公司 | Pipe fitting welding structure and process |
| CN112658421A (en) * | 2020-12-14 | 2021-04-16 | 湖南开益制冷设备有限公司 | Welding method and welding assembly for refrigeration copper pipe |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL9200155A (en) * | 1992-01-28 | 1993-08-16 | Perfecta Chemie Bv | METHOD FOR BRAZING TUBES. |
| GB2411457B (en) * | 2004-02-27 | 2006-01-18 | Kenmore Uk Ltd | Cooling apparatus |
| JP5310714B2 (en) * | 2010-12-28 | 2013-10-09 | ダイキン工業株式会社 | Metal tube joining structure and heat exchanger |
| CN102128323B (en) * | 2011-03-01 | 2012-07-18 | Tcl空调器(中山)有限公司 | Connection structure of copper-aluminum composite pipe and copper pipe and welding method thereof |
| CN104625287A (en) * | 2013-11-08 | 2015-05-20 | 青岛宏泰铜业有限公司 | Copper pipe braze welding technology |
| US9863559B2 (en) * | 2013-12-11 | 2018-01-09 | Faurecia Emissions Control Technologies, Usa, Llc | Thin wall welding |
| CN104439591A (en) * | 2014-12-03 | 2015-03-25 | 嵊州市新起点焊接科技有限公司 | Connecting component for copper and stainless steel and welding method of connecting component |
| CN204913086U (en) * | 2015-08-03 | 2015-12-30 | 广东五星太阳能股份有限公司 | Three expand copper brazing interface to taking over |
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| CN105583541A (en) | 2016-05-18 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 210039, No. 1-2, long Zang Avenue, Yuhuatai District, Jiangsu, Nanjing Applicant after: Nanjing West hundred passenger car air conditioning Limited by Share Ltd. Address before: 210039, No. 1-2, long Zang Avenue, Yuhuatai District, Jiangsu, Nanjing Applicant before: NANJING SPANCOLD AUTOMOBILE AIR CONDITIONING CO.,LTD. |
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| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230321 Address after: No. 1-2, longzang Avenue, Yuhuatai District, Nanjing, Jiangsu 210039 Patentee after: Nanjing Xibaike New Energy Technology Co.,Ltd. Address before: No. 1-2, longzang Avenue, Yuhuatai District, Nanjing, Jiangsu 210039 Patentee before: Nanjing West hundred passenger car air conditioning Limited by Share Ltd. |