CN105689911A - Brazing seam structure and electronic expansion valve welding method - Google Patents
Brazing seam structure and electronic expansion valve welding method Download PDFInfo
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- CN105689911A CN105689911A CN201410706604.8A CN201410706604A CN105689911A CN 105689911 A CN105689911 A CN 105689911A CN 201410706604 A CN201410706604 A CN 201410706604A CN 105689911 A CN105689911 A CN 105689911A
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- brazing
- sleeve pipe
- brazing surface
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- valve body
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Abstract
The present invention discloses a brazing seam structure and belongs to the field of welding. By adopting the brazing seam structure, the problem that the compactness of brazing seams declines in the prior art is solved. According to the technical scheme, a first weldment is provided with a first brazing surface. A second weldment is provided with a second brazing surface. The first brazing surface and the second brazing surface are connected to form a brazing gap with a V-shaped cross section. The brazing gap is filled with brazing filler metal to form a brazing seam with a V-shaped cross section. The vertex of the V shape is the position where the first brazing surface and the second brazing surface are connected. In addition, the invention further provides an electronic expansion valve welding method for forming the brazing seam structure. The Brazing seam structure and the electronic expansion valve welding method are mainly used for brazing between parts.
Description
Technical field
The present invention relates to soldering, particularly a kind of brazed seam structure and form the electric expansion valve welding method of this brazed seam structure。
Background technology
Soldering is to adopt to make solder than the low-melting metal material of weldment, by weldment and solder heat to higher than solder fusing point, lower than weldment fusion temperature, utilizes liquid solder moistening weldment, fills weld gap the method being connected weldment with weldment phase counterdiffusion realization。Brazing deformation is little, brazed seam smooth and beautiful appearance, it is suitable for welding precision, weldment that is complicated and that be made up of different materials, but the intensity of soldered fitting is relatively low, thermostability is poor, the requirement of joint clearance of brazing is higher, generally require between 0.01～0.1 millimeter, during soldering, liquid solder to go to fill up formation brazed seam along joint clearance of brazing flowing, owing to joint clearance of brazing is only small, such as capillary tube, so being referred to as capillary flow, existing joint clearance of brazing unreasonable structure, cause that capillary flow ability is less, solder cannot fill up joint clearance of brazing, there will be the problems such as pore, the compactness making brazed seam declines。
Summary of the invention
The purpose that the present invention to reach just is to provide a kind of brazed seam structure, improves the compactness of brazed seam, it is ensured that brazed seam quality。
In order to achieve the above object, the present invention adopts the following technical scheme that a kind of brazed seam structure, first weldment has the first brazing surface, second weldment has the second brazing surface, described first brazing surface and the second brazing surface connect and form the joint clearance of brazing that cross section is V-arrangement, solder forms the brazed seam that cross section is V-arrangement in joint clearance of brazing, the position that the summit of V-arrangement i.e. the first brazing surface and the second brazing surface connect。
Further, described first brazing surface and the second brazing surface are plane。
Further, described first brazing surface is plane, and the second brazing surface is convex globoidal。
Further, described first brazing surface is convex globoidal, and the second brazing surface is plane。
It addition, the present invention also provides for a kind of electric expansion valve welding method, comprise the following steps:
S1) providing valve body, sleeve pipe and spacer, arrange the first brazing surface, arrange the second brazing surface on sleeve pipe on valve body, sleeve pipe and valve body being assembled up so that forming cross section between the first brazing surface and the second brazing surface is the joint clearance of brazing of V-arrangement；
S2) valve body, sleeve pipe, spacer are carried out pre-determined bit welding, make three be fixed together；
S3) valve body being fixed together, sleeve pipe, spacer are carried out soldering and fix, and realize being tightly connected of valve body and sleeve pipe, between the first brazing surface and the second brazing surface, form above-mentioned brazed seam structure。
Further, described valve body outer circumference surface is provided with ladder section, ladder section has positioning table terrace, the rear end of described sleeve pipe is provided with installing hole, ladder section is inserted in sleeve pipe through installing hole, and the rear end of sleeve pipe is against on positioning table terrace, and described first brazing surface is positioning table terrace, described second brazing surface is the rear end face of sleeve pipe, and the edge at edge and positioning table terrace that the rear end face of sleeve pipe is positioned at installing hole connects。
Further, described positioning table terrace is plane, and the rear end face of sleeve pipe is positioned at the edge convex rear end face making sleeve pipe backward of installing hole and forms the conical surface or convex annular cambered surface。
Further, the interior edge of described positioning table terrace makes positioning table terrace form the conical surface or convex annular cambered surface to lordosis, and the rear end face of sleeve pipe is plane。
Further, described spacer pre-determined bit is welded on the rear end face of sleeve pipe。
Further, described spacer pre-determined bit is welded on the outer circumference surface of valve body。
After adopting technique scheme, present invention have the advantage that and form the brazed seam structure that cross section is V-arrangement, due to the gap from the summit of V-arrangement cross section to opening everywhere not etc., and the first brazing surface and the second brazing surface connect and can form the joint clearance of brazing of V-arrangement cross section, the inner making joint clearance of brazing has capillarity, form adsorption effect, work as brazing flux, solder is when entering brazed seam, can first fill the inner that joint clearance of brazing is less, namely fill to the summit of V-arrangement cross section, then elapse to outer end, joint clearance of brazing gradually, the gas in joint clearance of brazing can not only be got rid of better, impurity etc., and can also effectively eliminate the little encirclement phenomenon that liquid solder occurs when filling, can at utmost improve the compactness of brazed seam, ensure brazed seam quality；And in electric expansion valve welding method, form above-mentioned brazed seam structure, it is possible to make valve body and sleeve pipe Welding Structure more stable reliably, and sealing property is also farthest ensured。
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described:
Fig. 1 is the schematic diagram of the embodiment of the present invention one；
Fig. 2 is the schematic diagram after the embodiment of the present invention one work changes；
Fig. 3 is the schematic diagram of the embodiment of the present invention two；
Fig. 4 is I place enlarged drawing in Fig. 3；
Fig. 5 is the schematic diagram of the embodiment of the present invention three；
Fig. 6 is II place enlarged drawing in Fig. 5。
Detailed description of the invention
Embodiment one:
The present embodiment provides a kind of brazed seam structure, as shown in Figure 1, first weldment A has the first brazing surface A1, second weldment B has the second brazing surface B1, first brazing surface A1 and the second brazing surface B1 connects and forms the joint clearance of brazing C that cross section is V-arrangement, it is the brazed seam of V-arrangement that solder forms cross section in the C of joint clearance of brazing, the position that the summit of V-arrangement i.e. the first brazing surface A1 and the second brazing surface B1 connects。The present invention is by being designed the brazing surface structure forming brazed seam, form the brazed seam structure on not etc. gap (from the summit of V-arrangement cross section to the gap of opening everywhere not etc.), comparison crucially the first brazing surface A1 and the second brazing surface B1 connects and can form the summit of V-arrangement cross section, the inner making joint clearance of brazing C has capillarity, form adsorption effect, allow and work as brazing flux, solder is when entering joint clearance of brazing C, can first fill the less the inner of joint clearance of brazing C, namely fill to the summit of V-arrangement cross section, then elapse to C outer end, joint clearance of brazing gradually, the gas in the C of joint clearance of brazing can not only be got rid of better, impurity etc., and can also effectively eliminate the little encirclement phenomenon that liquid solder occurs when filling, can at utmost improve the compactness of brazed seam, ensure brazed seam quality。
In the present embodiment, the first brazing surface A1 and the second brazing surface B1 is plane。In addition, it is also possible to as in figure 2 it is shown, the first brazing surface A1 is plane, the second brazing surface B1 is convex globoidal, the joint clearance of brazing C in the gap such as or not equally possible formation between the two, thus forming the brazed seam that cross section is V-arrangement。Or, the first brazing surface A1 is convex globoidal, and the second brazing surface B1 is plane, it is also possible to form the joint clearance of brazing C in the gap such as not, thus forming the brazed seam that cross section is V-arrangement。
Embodiment two:
The present embodiment provides a kind of electric expansion valve welding method, comprises the following steps:
S1) valve body 1, sleeve pipe 2 and spacer 3 are provided, valve body 1 arranges the first brazing surface A1, sleeve pipe 2 arranges the second brazing surface B1, sleeve pipe 2 and valve body 1 is assembled up so that forming the joint clearance of brazing C that cross section is V-arrangement between the first brazing surface A1 and the second brazing surface B1；
S2) valve body 1, sleeve pipe 2, spacer 3 are carried out pre-determined bit welding, make three be fixed together；
S3) valve body 1 being fixed together, sleeve pipe 2, spacer 3 are carried out soldering and fix, and realize being tightly connected of valve body 1 and sleeve pipe 2, between the first brazing surface A1 and the second brazing surface B1, form the brazed seam structure described in embodiment one。
As shown in Figures 3 and 4, in the present embodiment, valve body 1 outer circumference surface is provided with ladder section, ladder section has positioning table terrace 11, and the rear end of described sleeve pipe 2 is provided with installing hole 21, and ladder section is inserted in sleeve pipe 2 through installing hole 21, the rear end of sleeve pipe 2 is against on positioning table terrace 11, described first brazing surface A1 is positioning table terrace 11, and described second brazing surface B1 is the rear end face of sleeve pipe 2, and the edge at edge and positioning table terrace 11 that the rear end face of sleeve pipe 2 is positioned at installing hole 21 connects。Positioning table terrace 11 is plane, and the rear end face of sleeve pipe is positioned at the edge convex rear end face making sleeve pipe 2 backward of installing hole 21 and forms convex annular cambered surface。The convex annular cambered surface being stamped and formed out as the second brazing surface B1 can be passed through in the rear end of sleeve pipe 2, in addition it is also possible to using the rear end of sleeve pipe 2 by being stamped and formed out the conical surface as the second brazing surface B1。
The rear end face of positioning table terrace 11 and sleeve pipe 2 forms the joint clearance of brazing C that cross section is V-arrangement, from the summit of V-arrangement cross section to the gap of opening everywhere not etc., first brazing surface A1 and the second brazing surface B1 connects and can form the summit of V-arrangement cross section, the inner making joint clearance of brazing C has capillarity, form adsorption effect, allow and work as brazing flux, solder is when entering joint clearance of brazing C, can first fill the less the inner of joint clearance of brazing C, namely fill to the summit of V-arrangement cross section, then elapse to C outer end, joint clearance of brazing gradually, the gas in the C of joint clearance of brazing can not only be got rid of better, impurity etc., and can also effectively eliminate the little encirclement phenomenon that liquid solder occurs when filling, can at utmost improve the compactness of brazed seam, ensure brazed seam quality, therefore valve body 1 is more stable reliably with sleeve pipe 2 Welding Structure, and sealing property is also farthest ensured。
In the present embodiment, spacer 3 pre-determined bit is welded on the rear end face of sleeve pipe 2。In addition spacer 3 pre-determined bit can also be welded on the outer circumference surface of valve body 1。Or by valve body 1, sleeve pipe 2, spacer 3 all carry out pre-determined bit welding between any two。
Embodiment three:
In addition, the present embodiment and embodiment two have a little difference in the brazed seam configuration aspects formed, as it can be seen in figures 5 and 6, the interior edge of positioning table terrace 11 makes, to lordosis, the conical surface i.e. the first brazing surface A1 that positioning table terrace 11 formed, the rear end face of sleeve pipe 2 i.e. the second brazing surface B1, and the second brazing surface B1 is plane。Additionally, positioning table terrace 11 can also form convex annular cambered surface。
The present embodiment has same effect with embodiment two, the rear end face of positioning table terrace 11 and sleeve pipe 2 forms the joint clearance of brazing C that cross section is V-arrangement, from the summit of V-arrangement cross section to the gap of opening everywhere not etc., first brazing surface A1 and the second brazing surface B1 connects and can form the summit of V-arrangement cross section, the inner making joint clearance of brazing C has capillarity, form adsorption effect, allow and work as brazing flux, solder is when entering joint clearance of brazing C, can first fill the less the inner of joint clearance of brazing C, namely fill to the summit of V-arrangement cross section, then elapse to C outer end, joint clearance of brazing gradually, the gas in the C of joint clearance of brazing can not only be got rid of better, impurity etc., and can also effectively eliminate the little encirclement phenomenon that liquid solder occurs when filling, can at utmost improve the compactness of brazed seam, ensure brazed seam quality, therefore valve body 1 is more stable reliably with sleeve pipe 2 Welding Structure, and sealing property is also farthest ensured。
In the present embodiment, spacer 3 pre-determined bit is welded on the rear end face of sleeve pipe 2。Spacer 3 pre-determined bit can certainly be welded on the outer circumference surface of valve body 1。Or by valve body 1, sleeve pipe 2, spacer 3 all carry out pre-determined bit welding between any two。
In above-described embodiment, the soldering between spacer 3 and valve body 1, sleeve pipe 2 can also form above-mentioned brazed seam structure, increases the reliability of welding。Except above preferred embodiment, the present invention also has other embodiment, and those skilled in the art can be variously modified according to the present invention and deform, and without departing from the spirit of the present invention, all should belong to scope defined in claims of the present invention。
Claims (10)
1. a brazed seam structure, first weldment has the first brazing surface, second weldment has the second brazing surface, it is characterized in that: described first brazing surface and the second brazing surface connect and form the joint clearance of brazing that cross section is V-arrangement, solder forms the brazed seam that cross section is V-arrangement in joint clearance of brazing, the position that the summit of V-arrangement i.e. the first brazing surface and the second brazing surface connect。
2. brazed seam structure according to claim 1, it is characterised in that: described first brazing surface and the second brazing surface are plane。
3. brazed seam structure according to claim 1, it is characterised in that: described first brazing surface is plane, and the second brazing surface is convex globoidal。
4. brazed seam structure according to claim 1, it is characterised in that: described first brazing surface is convex globoidal, and the second brazing surface is plane。
5. an electric expansion valve welding method, it is characterised in that comprise the following steps:
S1) providing valve body, sleeve pipe and spacer, arrange the first brazing surface, arrange the second brazing surface on sleeve pipe on valve body, sleeve pipe and valve body being assembled up so that forming cross section between the first brazing surface and the second brazing surface is the joint clearance of brazing of V-arrangement；
S2) valve body, sleeve pipe, spacer are carried out pre-determined bit welding, make three be fixed together；
S3) valve body being fixed together, sleeve pipe, spacer are carried out soldering and fix, and realize being tightly connected of valve body and sleeve pipe, between the first brazing surface and the second brazing surface, form the brazed seam structure described in claims 1。
6. electric expansion valve welding method according to claim 5, it is characterized in that: described valve body outer circumference surface is provided with ladder section, ladder section has positioning table terrace, the rear end of described sleeve pipe is provided with installing hole, ladder section is inserted in sleeve pipe through installing hole, and the rear end of sleeve pipe is against on positioning table terrace, and described first brazing surface is positioning table terrace, described second brazing surface is the rear end face of sleeve pipe, and the edge at edge and positioning table terrace that the rear end face of sleeve pipe is positioned at installing hole connects。
7. electric expansion valve welding method according to claim 6, it is characterised in that: described positioning table terrace is plane, and the rear end face of sleeve pipe is positioned at the edge convex rear end face making sleeve pipe backward of installing hole and forms the conical surface or convex annular cambered surface。
8. electric expansion valve welding method according to claim 6, it is characterised in that: the interior edge of described positioning table terrace makes positioning table terrace form the conical surface or convex annular cambered surface to lordosis, and the rear end face of sleeve pipe is plane。
9. the electric expansion valve welding method according to claim 6 or 7 or 8, it is characterised in that: described spacer pre-determined bit is welded on the rear end face of sleeve pipe。
10. the electric expansion valve welding method according to claim 6 or 7 or 8, it is characterised in that: described spacer pre-determined bit is welded on the outer circumference surface of valve body。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410706604.8A CN105689911A (en) | 2014-11-27 | 2014-11-27 | Brazing seam structure and electronic expansion valve welding method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410706604.8A CN105689911A (en) | 2014-11-27 | 2014-11-27 | Brazing seam structure and electronic expansion valve welding method |
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| CN105689911A true CN105689911A (en) | 2016-06-22 |
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| CN201410706604.8A Pending CN105689911A (en) | 2014-11-27 | 2014-11-27 | Brazing seam structure and electronic expansion valve welding method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110369819A (en) * | 2018-04-12 | 2019-10-25 | 浙江三花智能控制股份有限公司 | A kind of electric expansion valve |
| CN113510327A (en) * | 2021-06-23 | 2021-10-19 | 上海空间推进研究所 | Dissimilar material brazing gap control method and system |
| CN114905107A (en) * | 2022-07-13 | 2022-08-16 | 中机智能装备创新研究院(宁波)有限公司 | Brazing joint for promoting solder rheology and gas overflow, brazing method and device |
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| CN102267014A (en) * | 2011-07-12 | 2011-12-07 | 浙江盾安禾田金属有限公司 | Electronic expansion valve and manufacturing method thereof |
| CN103174860A (en) * | 2011-12-22 | 2013-06-26 | 浙江三花股份有限公司 | Fixing structure of connecting tube and valve seat |
| CN203810998U (en) * | 2014-02-12 | 2014-09-03 | 李嘉豪 | Improved edge sealing structure for temperature equalizing plate |
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| CN1788904A (en) * | 2005-12-19 | 2006-06-21 | 西北工业大学 | Conducting bar brazing method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110369819A (en) * | 2018-04-12 | 2019-10-25 | 浙江三花智能控制股份有限公司 | A kind of electric expansion valve |
| CN113510327A (en) * | 2021-06-23 | 2021-10-19 | 上海空间推进研究所 | Dissimilar material brazing gap control method and system |
| CN114905107A (en) * | 2022-07-13 | 2022-08-16 | 中机智能装备创新研究院(宁波)有限公司 | Brazing joint for promoting solder rheology and gas overflow, brazing method and device |
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