CN103846537B - The welding method of different kinds of metal tubes - Google Patents
The welding method of different kinds of metal tubes Download PDFInfo
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- CN103846537B CN103846537B CN201410116993.9A CN201410116993A CN103846537B CN 103846537 B CN103846537 B CN 103846537B CN 201410116993 A CN201410116993 A CN 201410116993A CN 103846537 B CN103846537 B CN 103846537B
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- metal tube
- plug
- welded joint
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- 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
- B23K11/10—Spot welding; Stitch welding
- B23K11/105—Stitch welding
Abstract
The welding method of a kind of different kinds of metal tubes, in welding process, utilizes plug promote and fix metal tube, applies pressure from inside metal tube to weld seam, makes welded connection more tight, improves welding quality。While utilizing plug, welding machine electric power twice is to different electrifying electrodes, realize twice welding in a weld job process, will not by welded together to plug and inner wall of metal tube, and two welded joint are formed in the junction of metal tube, the motlten metal joint portion that welded joint is namely formed due to welding, improve the sectional area of welded joint on metal tube connecting portion, improve the intensity of metal tube junction, make metal tube junction can bear bigger intraductal pressure, also improve compactness and the sealing of junction。
Description
Technical field
The present invention relates to a kind of solder technology, specifically, be the operational approach of a kind of dissimilar metal sealing of tube。
Background technology
Along with the development of modern industry, parts are had higher requirement, such as many-sided performances such as creep rupture strength, low-temperature flexibility, hardness and wearability, magnetic, electrical and thermal conductivity, corrosion resistances。And in most cases, a kind of material possibly cannot meet the requirement of over-all properties, even if or can meet, but material price is expensive, it is impossible to use in a large number in engineering。Thus, in order to meet user demand, reducing cost simultaneously, give full play to the performance advantage of different materials, it is more and more that welding dissimilar materials uses。
At refrigerating field, current more employing copper aluminium welding tubing, adopt this welding dissimilar materials tubing, the respective advantage performance of copper aluminum bi-material can be played on the one hand, also have relatively low cost simultaneously。Meanwhile, adopt the welding of different metal materials tubing also to have significantly high requirement for its compactness, otherwise can the refrigeration of strong influence refrigeration system, in welding procedure, therefore have very high requirement。
In the Patents technology of current different kinds of metal tubes resistance welding, " adapter for air conditioning chamber's internal-external machine and preparation method thereof " (application number: 200710107379.6) and " a kind of Cu-Al connecting pipe with hard sleeve and preparation method thereof " (application number: 200710145755.0), the two patented technology is all the method for plug-in type welding, and utilizes plug to improve welding quality。
But find in actual production process, when carrying out metal tube resistance welding according to above two method, the welded joint only forming a thinner thickness on the contact surface of two metal tubes connects two metal tubes, the intensity of connecting portion is still not enough, the High Voltage in pipe, compactness and sealing cannot be born still limited。
Summary of the invention
The present invention is directed to the resistance welding utilizing current metal tube solder technology to carry out metal tube, welded joint is less, metal tube connecting portion intensity is still not enough, the High Voltage in pipe cannot be born, compactness and sealing be the problem such as limited still, devises the welding method of a kind of new metal tube welding。
The welding method of the different kinds of metal tubes of the present invention, comprise the following steps: two sections of different kinds of metal tubes are separately fixed in fixing tool and Mobile tool, metal tube in Mobile tool does shell nosing treatment, and preset in this metal tube it being fixed in auxiliary mould conductive plug, fixing tool, Mobile tool and auxiliary mould all can as electrodes；Apply the thrust of horizontal direction, plug is made to promote the metal tube in Mobile tool to move to the metal tube in fixing tool, when the metal pipe joint of mobile status contacts the metal tube of stationary state, connect welding machine electric power, it is energized to fixing tool and the Mobile tool as electrode, moving process adjusts the parameters such as the electric current of welding machine electric power output, voltage, utilize resistance principle of heating, the contact area of two sections of different kinds of metal tubes and periphery start heating, and metal tube temperature in the axial direction is rapidly increased to molten condition；The metal tube of mobile status constantly advances to the metal tube of stationary state is internal, the mouth making the metal tube of mobile status enters in the metal tube of stationary state, the contact surface of two metal tubes is formed first time welded joint, fixing tool and Mobile tool power-off；The thrust of horizontal direction continues to press on the plug on auxiliary mould subsequently, plug is made to withstand on the inner wall of metal tube doing shell nosing treatment, welding machine electric power turns to the plug into fixing tool and auxiliary mould to be energized, galvanization adjusts the parameters such as the electric current of welding machine electric power output, voltage, the contact area and the periphery that make the metal tube of two sections of xenogenesis start heating, metal tube temperature in the axial direction is rapidly increased to molten condition, first time welded joint be partially formed second time welded joint。
Preferably, the position of second time welded joint is corresponding with the final position of plug。
Preferably, the thickness of second time welded joint is more than the thickness of first time welded joint。
The invention has the beneficial effects as follows: in welding process, utilize plug promote and fix metal tube, apply pressure from inside metal tube to weld seam, make welded connection more tight, improve welding quality。While utilizing plug, welding machine electric power twice is to different electrifying electrodes, realize twice welding in a weld job process, will not by welded together to plug and inner wall of metal tube, and two welded joint are formed in the junction of metal tube, the motlten metal joint portion that welded joint is namely formed due to welding, improve the sectional area of welded joint on metal tube connecting portion, improve the intensity of metal tube junction, make metal tube junction can bear bigger intraductal pressure, also improve compactness and the sealing of junction。Second time welded joint forms the outside in metal tube junction, and the thickness of second time welded joint is more than the thickness of first time welded joint, further improve the sealing property of metal tube junction, significantly more efficient can prevent the leakage of liquid in pipe。
Accompanying drawing explanation
Accompanying drawing 1 is the generalized section welding front frock and pipe fitting of the specific embodiment of the invention；
Accompanying drawing 2 be the specific embodiment of the invention first time welding after the generalized section of frock and pipe fitting；
Accompanying drawing 3 is the partial enlarged drawing of part A in Fig. 2；
Accompanying drawing 4 be the specific embodiment of the invention second time welding after the generalized section of frock and pipe fitting；
Accompanying drawing 5 is the partial enlarged drawing of part B in Fig. 4。
Detailed description of the invention
If Fig. 1 is to shown in 5, the welding method of the metal tube of the xenogenesis of the present invention, carry out according to following steps:
Two sections of different kinds of metal tubes 1 and 3 are separately fixed in fixing tool 2 and Mobile tool 4, metal tube 3 in Mobile tool 4 does shell nosing treatment, and preset in this metal tube 3 it being fixed in auxiliary mould 5 conductive plug 6, fixing tool 2, Mobile tool 4 and auxiliary mould 5 all can as electrodes。
Apply the thrust of horizontal direction, plug 6 is made to promote the metal tube 3 in Mobile tool 4 to move to the metal tube 1 in fixing tool 2, when the metal tube 3 of mobile status touches the metal tube 1 of stationary state, connect welding machine electric power, it is energized to fixing tool 2 and the Mobile tool 4 as electrode, moving process adjusts the parameters such as the electric current of welding machine electric power output, voltage, utilize resistance principle of heating, the contact area of two sections of different kinds of metal tubes 1 and 3 and periphery start heating, and metal tube temperature in the axial direction is rapidly increased to molten condition。
The metal tube 3 of mobile status constantly advances to the metal tube 1 of stationary state is internal, the mouth making the metal tube 3 of mobile status enters in the metal tube 1 of stationary state, as shown in Figure 3, the contact surface of two metal tubes is formed first time welded joint 7, fixing tool 2 and Mobile tool 4 power-off。
The thrust of horizontal direction continues to press on the plug 6 on auxiliary mould subsequently, plug 6 is made to withstand on the inner wall of metal tube doing shell nosing treatment, welding machine electric power turns to the plug into fixing tool 2 and auxiliary mould 5 to be energized, galvanization adjusts the parameters such as the electric current of welding machine electric power output, voltage, as shown in Figure 5, the contact area and the periphery that make the metal tube of two sections of xenogenesis start heating, metal tube temperature in the axial direction is rapidly increased to molten condition, first time welded joint be partially formed second time welded joint 8。
The final position that the position of the second time welded joint 8 formed pushes in metal tube with plug is corresponding, and the thickness of second time welded joint 8 is more than the thickness of first time welded joint 7。
Owing to plug 6 conducts electricity, when welding machine electric power is energized to the plug 6 on fixing tool 2 and auxiliary mould 5, plug 6 is made to be energized to the position that the metal tube 3 in Mobile tool 4 contacts with plug 6, make in this position and fixing tool 2 contact area between the corresponding part of metal tube 1 due to resistance principle of heating, form second time welded joint 8。
Embodiment 1:
When carrying out copper aluminium welding, aluminum pipe 1 and copper pipe 3 are separately fixed in fixing tool 2 and Mobile tool 4, copper pipe 3 in Mobile tool 4 does shell nosing treatment, and preset in this copper pipe 3 it being fixed in auxiliary mould 5 conductive plug 6, fixing tool 2, Mobile tool 4 and auxiliary mould 5 all can as electrodes。
Apply the thrust of horizontal direction, plug 6 is made to promote the copper pipe 3 in Mobile tool 4 to move to the aluminum pipe 1 in fixing tool 2, when the copper pipe 3 of mobile status touches the aluminum pipe 1 of stationary state, connect welding machine electric power, it is energized to fixing tool 2 and the Mobile tool 4 as electrode, moving process adjusts the parameters such as the electric current of welding machine electric power output, voltage, utilize resistance principle of heating, the contact area of aluminum pipe 1 and copper pipe 3 and periphery start heating, and metal tube temperature in the axial direction is rapidly increased to molten condition。
The copper pipe 3 of mobile status constantly advances to the aluminum pipe 1 of stationary state is internal, the mouth making the copper pipe 3 of mobile status enters in the aluminum pipe 1 of stationary state, as it is shown on figure 3, form first time welded joint 7, fixing tool 2 and Mobile tool 4 power-off on the contact surface of two metal tubes。
The thrust of horizontal direction continues to press on the plug 6 on auxiliary mould subsequently, plug 6 is made to withstand on copper pipe 3 inwall doing shell nosing treatment, welding machine electric power turns to the plug into fixing tool 2 and auxiliary mould 5 to be energized, galvanization adjusts the parameters such as the electric current of welding machine electric power output, voltage, as shown in Figure 5, the contact area and the periphery that make aluminum pipe 1 and copper pipe 3 start heating, metal tube temperature in the axial direction is rapidly increased to molten condition, first time welded joint 7 be partially formed second time welded joint 8。
Embodiment 2:
When carrying out copper steel welding, copper pipe 1 and steel pipe 3 are separately fixed in fixing tool 2 and Mobile tool 4, steel pipe 3 in Mobile tool 4 does shell nosing treatment, and preset in this steel pipe 3 it being fixed in auxiliary mould 5 conductive plug 6, fixing tool 2, Mobile tool 4 and auxiliary mould 5 all can as electrodes。
Apply the thrust of horizontal direction, plug 6 is made to promote the steel pipe 3 in Mobile tool 4 to move to the copper pipe 1 in fixing tool 2, when the steel pipe 3 of mobile status touches the copper pipe 1 of stationary state, connect welding machine electric power, it is energized to fixing tool 2 and the Mobile tool 4 as electrode, moving process adjusts the parameters such as the electric current of welding machine electric power output, voltage, utilize resistance principle of heating, the contact area of copper pipe 1 and steel pipe 3 and periphery start heating, and metal tube temperature in the axial direction is rapidly increased to molten condition。
The steel pipe 3 of mobile status constantly advances to the copper pipe 1 of stationary state is internal, the mouth making the steel pipe 3 of mobile status enters in the copper pipe 1 of stationary state, as it is shown on figure 3, form first time welded joint 7, fixing tool 2 and Mobile tool 4 power-off on the contact surface of two metal tubes。
The thrust of horizontal direction continues to press on the plug 6 on auxiliary mould subsequently, plug 6 is made to withstand on steel pipe 3 inwall doing shell nosing treatment, welding machine electric power turns to the plug into fixing tool 2 and auxiliary mould 5 to be energized, galvanization adjusts the parameters such as the electric current of welding machine electric power output, voltage, as shown in Figure 5, the contact area and the periphery that make aluminum pipe 1 and steel pipe 3 start heating, metal tube temperature in the axial direction is rapidly increased to molten condition, first time welded joint 7 be partially formed second time welded joint 8。
Embodiment 3:
When carrying out the welding of steel aluminum, aluminum pipe 1 and steel pipe 3 are separately fixed in fixing tool 2 and Mobile tool 4, steel pipe 3 in Mobile tool 4 does shell nosing treatment, and preset in this steel pipe 3 it being fixed in auxiliary mould 5 conductive plug 6, fixing tool 2, Mobile tool 4 and auxiliary mould 5 all can as electrodes。
Apply the thrust of horizontal direction, plug 6 is made to promote the steel pipe 3 in Mobile tool 4 to move to the aluminum pipe 1 in fixing tool 2, when the steel pipe 3 of mobile status touches the aluminum pipe 1 of stationary state, connect welding machine electric power, it is energized to fixing tool 2 and the Mobile tool 4 as electrode, moving process adjusts the parameters such as the electric current of welding machine electric power output, voltage, utilize resistance principle of heating, the contact area of aluminum pipe 1 and steel pipe 3 and periphery start heating, and metal tube temperature in the axial direction is rapidly increased to molten condition。
The steel pipe 3 of mobile status constantly advances to the aluminum pipe 1 of stationary state is internal, the mouth making the steel pipe 3 of mobile status enters in the aluminum pipe 1 of stationary state, as it is shown on figure 3, form first time welded joint 7, fixing tool 2 and Mobile tool 4 power-off on the contact surface of two metal tubes。
The thrust of horizontal direction continues to press on the plug 6 on auxiliary mould subsequently, plug 6 is made to withstand on steel pipe 3 inwall doing shell nosing treatment, welding machine electric power turns to the plug into fixing tool 2 and auxiliary mould 5 to be energized, galvanization adjusts the parameters such as the electric current of welding machine electric power output, voltage, as shown in Figure 5, the contact area and the periphery that make aluminum pipe 1 and steel pipe 3 start heating, metal tube temperature in the axial direction is rapidly increased to molten condition, first time welded joint 7 be partially formed second time welded joint 8。
Claims (3)
1. the welding method of a different kinds of metal tubes, it is characterized in that, comprise the following steps: two sections of different kinds of metal tubes are separately fixed in fixing tool and Mobile tool, metal tube in Mobile tool does shell nosing treatment, and preset in this metal tube it being fixed in auxiliary mould conductive plug, fixing tool, Mobile tool and auxiliary mould all can as electrodes；Apply the thrust of horizontal direction, plug is made to promote the metal tube in Mobile tool to move to the metal tube in fixing tool, when the metal pipe joint of mobile status contacts the metal tube of stationary state, connect welding machine electric power, it is energized to fixing tool and the Mobile tool as electrode, moving process adjusts the parameter of welding machine electric power output, utilizes resistance principle of heating, the contact area of two sections of different kinds of metal tubes and periphery start heating, and metal tube temperature in the axial direction is rapidly increased to molten condition；The metal tube of mobile status constantly advances to the metal tube of stationary state is internal, the mouth making the metal tube of mobile status enters in the metal tube of stationary state, the contact surface of two metal tubes is formed first time welded joint, fixing tool and Mobile tool power-off；The thrust of horizontal direction continues to press on the plug on auxiliary mould subsequently, plug is made to withstand on the inner wall of metal tube doing shell nosing treatment, welding machine electric power turns to the plug into fixing tool and auxiliary mould to be energized, galvanization adjusts the parameter of welding machine electric power output, the contact area and the periphery that make the metal tube of two sections of xenogenesis start heating, metal tube temperature in the axial direction is rapidly increased to molten condition, first time welded joint be partially formed second time welded joint。
2. the welding method of metal tube according to claim 1, it is characterised in that the position of second time welded joint is corresponding with the final position of plug。
3. the welding method of metal tube according to claim 1, it is characterised in that the thickness of second time welded joint is more than the thickness of first time welded joint。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410116993.9A CN103846537B (en) | 2014-03-26 | 2014-03-26 | The welding method of different kinds of metal tubes |
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| CN201410116993.9A CN103846537B (en) | 2014-03-26 | 2014-03-26 | The welding method of different kinds of metal tubes |
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| CN103846537A CN103846537A (en) | 2014-06-11 |
| CN103846537B true CN103846537B (en) | 2016-06-22 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10421148B2 (en) * | 2016-04-25 | 2019-09-24 | GM Global Technology Operations LLC | External heat assisted welding of dissimilar metal workpieces |
| CN106425067A (en) * | 2016-10-14 | 2017-02-22 | 合肥太通制冷科技有限公司 | Resistance butt welding machine die provided with core rod |
| KR101825939B1 (en) * | 2017-05-29 | 2018-02-08 | 지세원 | Metal pipe connection and connection method with different materials |
| CN108436241B (en) * | 2018-02-11 | 2020-08-14 | 佛山市智晓科技服务有限公司 | Resistance welding method |
| CN112496513B (en) * | 2020-11-30 | 2022-04-01 | 芜湖欧宝机电有限公司 | Welding method for welding compressor pipe fitting |
| CN113441566B (en) * | 2021-06-29 | 2022-11-22 | 东莞市中一合金科技有限公司 | Preparation process of copper-tin composite material |
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| CN1959171A (en) * | 2006-09-20 | 2007-05-09 | 左铁军 | Welded joint of thin wall copper aluminum pipe with no eutectic structure, and preparation method |
| CN101077548A (en) * | 2006-05-25 | 2007-11-28 | 珠海格力电器股份有限公司 | Copper aluminum composite pipeline, processing equipment and its processing method |
| CN102528255A (en) * | 2010-12-31 | 2012-07-04 | 左铁军 | V-shaped face copper and aluminium welding processing technique and welding connector used for power cables |
| CN102672326A (en) * | 2011-03-15 | 2012-09-19 | 左铁军 | Method for manufacturing copper-aluminum welded joint of capillary tube and copper end sleeved aluminum capillary tube |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20090078682A1 (en) * | 2007-09-24 | 2009-03-26 | Eric Feng | Insertion type resistance welding method for welding copper and aluminum tubing |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101077548A (en) * | 2006-05-25 | 2007-11-28 | 珠海格力电器股份有限公司 | Copper aluminum composite pipeline, processing equipment and its processing method |
| CN1959171A (en) * | 2006-09-20 | 2007-05-09 | 左铁军 | Welded joint of thin wall copper aluminum pipe with no eutectic structure, and preparation method |
| CN102528255A (en) * | 2010-12-31 | 2012-07-04 | 左铁军 | V-shaped face copper and aluminium welding processing technique and welding connector used for power cables |
| CN102672326A (en) * | 2011-03-15 | 2012-09-19 | 左铁军 | Method for manufacturing copper-aluminum welded joint of capillary tube and copper end sleeved aluminum capillary tube |
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