CN108672865A - A kind of silk screen method for welding - Google Patents
A kind of silk screen method for welding Download PDFInfo
- Publication number
- CN108672865A CN108672865A CN201810337448.0A CN201810337448A CN108672865A CN 108672865 A CN108672865 A CN 108672865A CN 201810337448 A CN201810337448 A CN 201810337448A CN 108672865 A CN108672865 A CN 108672865A
- Authority
- CN
- China
- Prior art keywords
- silk screen
- silver
- structural member
- silk
- welding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
Abstract
The invention discloses a kind of silk screen method for welding, and the present invention is first in silk screen electroplate, using coating silver as solder.In brazing process, coating silver is filled into the weld seam of silk screen, it is demonstrated experimentally that the method contact area that treated between silk screen and structural member reaches 90% or more through the invention, all screen mesh are not blocked.Weld metal intensity between silk screen/structural member is more than the intensity of silk screen base material.
Description
Technical field
The present invention relates to infrared detector technical fields, more particularly to a kind of silk screen method for welding.
Background technology
J-T refrigeration type infrared detectors have a wide range of applications on various airborne, carrier-borne and land-based missiles, are guided missiles
The core component for tracking target, is equivalent to " eyes " of guided missile.Detector is supplied in the preparation stage gas cylinder of guided missile, is made
Infrared detector quickly reach its operating temperature, can work normally.After MISSILE LAUNCHING, infrared detector is needed not have
In the case of air source or seldom air source, the normal operating conditions of one section of cool-storage time is continued to meet wanting for tactics index
It asks.The length of cool-storage time largely decides that guided missile keeps track target capability, when extending infrared detector cold-storage
Between for improve guided missile system combat performance have very great help.
On this basis, it such as needs to promote infrared detector cool-storage time, one of the methods is install inside detector
Cold-storage device makes the liquid nitrogen generated by J-T refrigerators be attached in cold-storage device, and detector cold head position is enable to survive more
Cold.Simultaneously as detector starts the limitation of time, what the thermal capacitance of cold-storage device will be as possible is small.This requires cold-storages to fill
That sets that weight will be as possible is light, and heat conductivility is higher as possible.
Current techniques means can realize the basic connection of silk screen/structural member.Main connection method has welding, bonding, leads to
Cross the modes such as structural member fixation.But in the connection type of existing silk screen and structural member, the connection of silk screen and structural member is reliable
All there are some problems in property, for example, Binding scheme：Due to silk screen operating temperature in 80K hereinafter, using bonding mode will be big
The big reliability for reducing silk screen/structural member connection, while adhesive glue is difficult to control in technical process, it may appear that clogging
Phenomenon.Welding scheme：The contact area of silk screen/structural member is less than after 40%, solder fusing the balling under its surface tension effects,
It is point contact to block contact of the mesh seriously, between silk screen/structural member.And structural member fixed solution can increase detector entirety
Thermal mass, silk screen/contact structure area are less than 20%.
That is, the reliability that silk screen is connect with structural member in the prior art needs to be further increased.
Invention content
The present invention provides a kind of silk screen method for welding, and insecure ask is connect with structural member to solve prior art silk screen
Topic.
The present invention provides a kind of silk screen method for welding, this method includes：According to silk screen electroplate, thickness of coating
The mesh number of the silk screen is calculated；Structural member and the silk screen are brazed.
Further, in silk screen electroplate, thickness of coating is to be calculated according to the mesh number of the silk screen, specific to wrap
It includes：The model that silk screen is established according to the mesh number of the silk screen fills the silver content of the silk screen weld seam according to model estimation, and
Silver is uniformly plated on the silk screen by the silver content obtained according to estimation.
Further, the model that silk screen is established according to the mesh number of the silk screen fills the silk according to model estimation
The silver content of net weld seam, and silver is uniformly plated on the silk screen by the silver content obtained according to estimation, is specifically included：According to the silk screen
Mesh number establish the model of silk screen, fill the silver content of the silk screen weld seam according to model estimation, and by the silver content of compared estimate
The silver of more predetermined quantities is uniformly plated on the silk screen.
Further, the meshcount is more than 50 mesh.
Further, the structural member include it is following in it is one or more：Cold head, cold bench.
The present invention has the beneficial effect that：
The present invention passes through in silk screen electroplate, wherein thickness of coating is to be calculated according to the mesh number of the silk screen, so
Structural member and the silk screen are brazed afterwards, in brazing process, after silver coating fusing, the gold of the melting on silk net metal silk
Commissure can be flow under gravity and capillarity by belonging to silver, to fill the gap of silk screen.To improve silk screen well
The reliability being connect with structural member.
Description of the drawings
Fig. 1 is the screen knitting structural schematic diagram of the embodiment of the present invention；
Fig. 2 be the embodiment of the present invention welding after the completion of the micro- sem observations of 20X；
Fig. 3 be the embodiment of the present invention welding after the completion of the micro- sem observations of 50X.
Specific implementation mode
In order to solve the problems, such as that the reliability that prior art silk screen is connect with structural member is low, the present invention provides a kind of silk screens
Method for welding, the present invention pass through in silk screen electroplate, wherein and thickness of coating is to be calculated according to the mesh number of the silk screen,
Then structural member and the silk screen are brazed, in brazing process, after silver coating fusing, melting on silk net metal silk
Metallic silver can flow to commissure under gravity and capillarity, to fill the gap of silk screen.To improve silk well
The reliability that net is connect with structural member.Below in conjunction with attached drawing and embodiment, the present invention will be described in further detail.It should
Understand, the specific embodiments described herein are merely illustrative of the present invention, does not limit the present invention.
An embodiment of the present invention provides a kind of silk screen method for welding, this method includes：
In silk screen electroplate, thickness of coating is to be calculated according to the mesh number of the silk screen；
Structural member and the silk screen are brazed.
That is, the embodiment of the present invention passes through in silk screen electroplate, wherein thickness of coating is according to the silk screen
Mesh number is calculated, and is then brazed structural member and the silk screen, in brazing process, after silver coating fusing, and silk screen gold
The molten metal silver belonged on silk can flow to commissure under gravity and capillarity, to fill the gap of silk screen.To
Improve the reliability that silk screen is connect with structural member well.
When it is implemented, in the embodiment of the present invention, in silk screen electroplate, thickness of coating is the mesh number according to the silk screen
It is calculated, specifically includes：
The model that silk screen is established according to the mesh number of the silk screen fills the silver of the silk screen weld seam according to model estimation
Amount, and silver is uniformly plated on the silk screen by the silver content obtained according to estimation.
Specifically, the embodiment of the present invention is that the model of silk screen is established according to the mesh number of the silk screen, according to the model
The silver content of the silk screen weld seam is filled in estimation, and the silver of the more tentation datas of the silver content of compared estimate is uniformly plated on the silk screen.
In the specific implementation, above-mentioned predetermined quantity, example can be arranged in those skilled in the art according to actual needs
Such as, the embodiment of the present invention be with estimate the 1.2 of silver content times come to silk screen carry out it is silver-plated.
The embodiment of the present invention is estimated by the weld seam silver consuming amount to silk screen, and on the basis of estimation, is added a certain amount of
Silver so that all weld seams can be filled.
When it is implemented, silk screen described in the embodiment of the present invention is the silk screen more than 50 mesh.
It should be noted that structural member described in the embodiment of the present invention include it is following in it is one or more：Cold head, cold bench.
When it is implemented, corresponding structural member can be arranged in those skilled in the art as needed, the present invention does not limit this specifically
It is fixed.
The embodiment of the present invention carries out the welding of structural member/silk screen by using the method for soldering.In silk screen electroplate,
Thickness of coating is calculated according to meshcount.Using coating silver as solder.On the one hand, silver coating is equal in the distribution of silk screen surface
It is even and good with silk screen weldability, be not in a large amount of silver convergence balling phenomenon after coating fusing.On the other hand, due to silk
Net gross area is silver-plated, and having silver coating at the back side of silk net metal silk and side exists, and in welding, the part silver coating is molten
After change, the molten metal silver on silk net metal silk can flow to commissure under gravity and capillarity, to fill attached drawing
The gap of position 1 in 1.
After the completion of welding, observation experiment part is as shown in attached drawing 2 and Fig. 3 under the microscope：Through the invention at the method
The contact area between silk screen and structural member after reason reaches 90% or more, and all screen mesh are not blocked.Silk screen/structure
Weld metal intensity between part is more than the intensity of silk screen base material.
Detailed explanation and illustration will be carried out to method of the present invention by a specific example below：
1) design of welding jig (the different different types of fixtures of profile arrangement).
Welding fixture has substrate hold-down function, and silk screen can be made to combine closely with workpiece to be welded.
2) welding condition is formulated and is implemented.
Welding condition is formulated：
Welding equipment：Vacuum brazing furnace (uses other types of welding method, in this patent scope)；
Welding parameter：Welding parameter is determined according to selected Coating composition.
Welding fixture：Compressing fixture.
Soldering part：(part of other types of material is such as constitutional detail plating nickel on surface：Ceramic material, high score will pass through this
Method welds silk screen, in this patent protection category；Structural member is using other coating, in this patent protection category).Copper
Matter silk screen electroplate (uses the silk screen of other materials, in this patent protection category；Electroplating surface other materials can realize weldering
Function is expected, in this patent protection category).
Pre-welding treatment：Degreasing of parts degreasing cleaning to be welded.
Welding procedure is implemented：
Part to be welded is packed into brazing tooling, is then charged into vacuum brazing furnace and is welded.After the completion of soldering,
Microscopically observation, solder fusing is abundant, no accumulation.
On the whole, the method contact area that treated between silk screen and structural member reaches 90% through the invention
More than, all screen mesh are not blocked.Weld metal intensity between silk screen/structural member is more than the intensity of silk screen base material.
Although being example purpose, the preferred embodiment of the present invention is had been disclosed for, those skilled in the art will recognize
Various improvement, increase and substitution are also possible, and therefore, the scope of the present invention should be not limited to the above embodiments.
Claims (5)
1. a kind of silk screen method for welding, which is characterized in that including：
In silk screen electroplate, thickness of coating is to be calculated according to the mesh number of the silk screen；
Structural member and the silk screen are brazed.
2. according to the method described in claim 1, it is characterized in that, in silk screen electroplate, thickness of coating is according to the silk
The mesh number of net is calculated, and specifically includes：
The model that silk screen is established according to the mesh number of the silk screen fills the silver content of the silk screen weld seam according to model estimation,
And silver is uniformly plated on the silk screen by the silver content obtained according to estimation.
3. according to the method described in claim 2, it is characterized in that, establishing the model of silk screen, root according to the mesh number of the silk screen
The silver content of the silk screen weld seam is filled according to model estimation, and silver is uniformly plated to the silk screen by the silver content obtained according to estimation
On, it specifically includes：
The model that silk screen is established according to the mesh number of the silk screen fills the silver content of the silk screen weld seam according to model estimation,
And the silver of the more predetermined quantities of the silver content of compared estimate is uniformly plated on the silk screen.
4. according to the method described in any one of claim 1-3, which is characterized in that
The meshcount is more than 50 mesh.
5. according to the method described in any one of claim 1-3, which is characterized in that
The structural member include it is following in it is one or more：Cold head, cold bench.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810337448.0A CN108672865A (en) | 2018-04-16 | 2018-04-16 | A kind of silk screen method for welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810337448.0A CN108672865A (en) | 2018-04-16 | 2018-04-16 | A kind of silk screen method for welding |
Publications (1)
| Publication Number | Publication Date |
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| CN108672865A true CN108672865A (en) | 2018-10-19 |
Family
ID=63799983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810337448.0A Pending CN108672865A (en) | 2018-04-16 | 2018-04-16 | A kind of silk screen method for welding |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110523898A (en) * | 2019-08-16 | 2019-12-03 | 西安飞机工业（集团）有限责任公司 | A kind of wire mesh edge bonding method |
| CN112276477A (en) * | 2019-07-26 | 2021-01-29 | 中国科学院理化技术研究所 | Preparation method of wire mesh heat regenerator |
Citations (7)
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| US4040159A (en) * | 1975-10-29 | 1977-08-09 | General Electric Company | Method of manufacture of cooled airfoil-shaped bucket |
| CN102684435A (en) * | 2011-03-11 | 2012-09-19 | 发那科株式会社 | Squirrel-cage rotor of induction motor and production method thereof wherein end ring is brazed with bar |
| US20120328419A1 (en) * | 2011-06-27 | 2012-12-27 | Riggi Jr Vincent T | Brazed Turbine Seal |
| CN104227164A (en) * | 2013-06-14 | 2014-12-24 | 富瑞精密组件（昆山）有限公司 | Heat pipe and manufacturing method thereof |
| CN206356685U (en) * | 2016-12-30 | 2017-07-28 | 深圳市晟达真空钎焊技术有限公司 | The metal contact reaction brazing structure of superfine pipe |
| CN107252942A (en) * | 2017-07-17 | 2017-10-17 | 中国科学技术大学 | A kind of metal surface forms the processing technology of micro-nano multi-level composite construction |
| CN107511549A (en) * | 2017-09-04 | 2017-12-26 | 中国电子科技集团公司第十研究所 | A kind of compound cold bench and its manufacture method |
-
2018
- 2018-04-16 CN CN201810337448.0A patent/CN108672865A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4040159A (en) * | 1975-10-29 | 1977-08-09 | General Electric Company | Method of manufacture of cooled airfoil-shaped bucket |
| CN102684435A (en) * | 2011-03-11 | 2012-09-19 | 发那科株式会社 | Squirrel-cage rotor of induction motor and production method thereof wherein end ring is brazed with bar |
| US20120328419A1 (en) * | 2011-06-27 | 2012-12-27 | Riggi Jr Vincent T | Brazed Turbine Seal |
| CN104227164A (en) * | 2013-06-14 | 2014-12-24 | 富瑞精密组件（昆山）有限公司 | Heat pipe and manufacturing method thereof |
| CN206356685U (en) * | 2016-12-30 | 2017-07-28 | 深圳市晟达真空钎焊技术有限公司 | The metal contact reaction brazing structure of superfine pipe |
| CN107252942A (en) * | 2017-07-17 | 2017-10-17 | 中国科学技术大学 | A kind of metal surface forms the processing technology of micro-nano multi-level composite construction |
| CN107511549A (en) * | 2017-09-04 | 2017-12-26 | 中国电子科技集团公司第十研究所 | A kind of compound cold bench and its manufacture method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112276477A (en) * | 2019-07-26 | 2021-01-29 | 中国科学院理化技术研究所 | Preparation method of wire mesh heat regenerator |
| CN110523898A (en) * | 2019-08-16 | 2019-12-03 | 西安飞机工业（集团）有限责任公司 | A kind of wire mesh edge bonding method |
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Application publication date: 20181019 |