CN214684741U - Structure for realizing laser sealing welding of different welding surfaces of silicon-aluminum pipe shell - Google Patents
Structure for realizing laser sealing welding of different welding surfaces of silicon-aluminum pipe shell Download PDFInfo
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- CN214684741U CN214684741U CN202120365880.8U CN202120365880U CN214684741U CN 214684741 U CN214684741 U CN 214684741U CN 202120365880 U CN202120365880 U CN 202120365880U CN 214684741 U CN214684741 U CN 214684741U
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Abstract
The utility model discloses a realize structure of different face of weld of silicon-aluminium tube shell laser seal welding, include: silicon-aluminum tube shell and apron, the silicon-aluminum tube shell includes the face of weld, the stress groove, the step of face of weld and apron overlap joint, the periphery of silicon-aluminum tube shell structure sets up the different reservation limit of width, silicon-aluminum tube shell structure still sets up horizontally step, set up the stress groove between reservation limit and step, the stress groove exceeds reservation limit and step and possesses and set for the width, the position that the stress groove exceeds the step forms the face of weld, welding area when the face of weld of silicon-aluminum tube shell structure is laser seal welding, the stress buffering when the stress groove of silicon-aluminum tube shell is used for seal welding in-process tube deformation, the face of weld is used for the location when the apron seal welding with the step of apron overlap joint. The utility model discloses a realize that the different face of weld of silicon-aluminium tube shell laser seal processing is simple, easily realize to seal quality uniformity can obtain guaranteeing.
Description
Technical Field
The utility model relates to a shell packaging structure, specifically relate to a realize different face of weld's of aluminous shell laser seal welding structure, belong to packaging structure part technical field.
Background
With the development of microwave hybrid integrated circuits toward "miniaturization, lightweight, multifunction, and high reliability", LTCC substrates have been widely used as substrates capable of incorporating components. However, due to the ceramic characteristics of the LTCC substrate, the LTCC substrate has a small thermal expansion coefficient, and needs to be matched with a tube case with a matched thermal expansion coefficient, and the tube case should have a good thermal conductivity. The silicon-aluminum alloy is used as an artificially synthesized composite material with aluminum as a matrix and silicon as a reinforcement, has the advantages of easiness in processing, high heat conductivity, high strength, low density and the like, and is better suitable for serving as a tube shell of an LTCC substrate. Meanwhile, in the design process of miniaturization of the microwave hybrid integrated circuit, a large number of bare chips are used, and the bare chips need to be packaged in order to ensure the long-term reliability of the microwave hybrid integrated circuit. The laser sealing welding has the advantages of local heating, narrow welding line, controllable atmosphere in the cavity and the like, and is the most common method for the air-tight packaging of the prior silicon-aluminum pipe shell.
The laser sealing and welding process of the silicon-aluminum alloy is researched by Wangsong et al in research on laser sealing and welding process of silicon-aluminum alloy for microwave components, and the laser sealing and welding process of the silicon-aluminum alloy is researched by Xucep et al in research on laser airtight welding of silicon-aluminum alloy for electronic packaging, and the laser sealing and welding process is provided for preventing the generation of welding thermal cracks on the surface of a tube shell in the sealing and welding process, the structure of the welding surface of the tube shell is optimized, and the distance between the center of a welding line and the edge of the tube shell is controlled to be 0.8 mm. However, this design poses a great difficulty in designing the connector mounting structure and the mounting angle of the microwave module. In order to ensure the strength of the structural design of the installation angle of the silicon-aluminum alloy pipe shell and the design of the installation structure of the connector and simultaneously avoid the generation of thermal cracks in the sealing and welding process, a new sealing and welding structure is urgently needed to be provided.
Disclosure of Invention
In order to solve the problem, the utility model discloses a realize the structure of the different face of weld of silicon-aluminium tube shell laser seal welding, this technical scheme's silicon-aluminium structure processing is simple, easily realize, and the welding seam quality after the seal welding is accomplished is guaranteed.
In order to achieve the above purpose, the technical solution of the present invention is as follows:
the utility model provides a realize structure of different welding faces of silicon-aluminum tube shell laser seal welding, silicon-aluminum tube shell and apron, the silicon-aluminum tube shell includes welding face, stress groove, welding face and step, the periphery of silicon-aluminum tube shell structure sets up the different reservation limit of width, silicon-aluminum tube shell structure still sets up the horizontally step the reservation limit with set up the stress groove between the step, the stress groove exceeds reservation limit and step and possesses the settlement width, the position that the stress groove exceeds the step forms the welding face, welding face when silicon-aluminum tube shell structure is laser seal welding is regional, the stress groove of silicon-aluminum tube shell is used for the stress buffering when the tube deformation of seal welding in-process, the location when welding face and the step of apron overlap joint are used for the apron seal welding.
Further, the silicon-aluminum pipe shell material is Al50Si, and the cover plate material is Al27 Si.
Further, the silicon-aluminum pipe shell further comprises a mounting hole, and the mounting hole is formed in the side, with the wider width, of the reserved side.
Further, the width of the step is not less than 0.8 mm.
Further, the width of the stress groove is equal to the width of a narrow side in the reserved side of the silicon-aluminum tube shell.
Further, the length and width of the cover plate are not more than 80 x 80cm, and the thickness of the cover plate is not less than 0.5 mm.
Further, the thickness of the stress groove is not less than that of the cover plate.
The utility model discloses the beneficial technological effect who gains: 1) the scheme is simple to process and easy to realize. By arranging the optimized structure of the stress groove and the step, the seal welding quality consistency of the optimized silicon-aluminum tube shell can be ensured; 2) the leakage rate of the silicon-aluminum tube shell sealed and welded by the scheme meets 2.03 multiplied by 10 required by 112 condition C of GJB 360B process-2Pa·cm3(ii) a requirement of/s; 3) by the structure designed by the utility model, the installation angle of the pipe shell and the connector are easier to design, and the reliability problems of installation cracking and the like caused by the brittleness of the silicon-aluminum material can be avoided; 4) the scheme has lower cost in the processing process and is beneficial to further popularization.
Drawings
FIG. 1 is an assembly connection diagram for implementing laser sealing and welding of different welding surface structures of a silicon-aluminum shell provided by an embodiment;
FIG. 2 is an enlarged view of assembly and connection for achieving different welding surface structures of the silicon-aluminum shell laser seal welding provided by the embodiment;
fig. 3 is a schematic diagram of a pipe shell for implementing laser sealing of different welding surface structures of a silicon-aluminum pipe shell according to the embodiment.
FIG. 4 is a schematic view of a welded joint after different welding surface structures are sealed and welded by the laser of the silicon-aluminum shell provided by the embodiment;
in the figure: 1. a silicon-aluminum pipe shell; 2. the surface is provided with a welding surface; 3. a stress slot; 4. mounting holes; 5. a cover plate; 6. welding seams; 7. a step; 8. the width of the stress slot; 9. step width; 10. narrow sides of the silicon aluminum housing; 11. the width of the narrow side of the silicon-aluminum shell; 12. the wide side of the silicon-aluminum shell; 13. the thickness of the stress slot.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings and embodiments, which are to be understood as illustrative only and not limiting the scope of the invention.
Example 1: referring to fig. 1-3, the utility model relates to an assembly connection schematic diagram and a tube schematic diagram of the structure of realizing the different welding faces of silicon-aluminum tube shell laser seal welding, as shown in the figure, include: the structure comprises a silicon-aluminum tube shell 1 and a cover plate 5, wherein the silicon-aluminum tube shell 1 comprises a welding surface 2, a stress groove 3 and a step 7 at the lap joint of the welding surface 2 and the cover plate 5, reserved edges with different widths are arranged on the periphery of the structure of the silicon-aluminum tube shell, and the reserved edges comprise a narrow edge 10 of a silicon-aluminum shell, a narrow edge width 11 of the silicon-aluminum shell and a wide edge 12 of the silicon-aluminum shell as shown in the figure; the structure of the silicon-aluminum tube shell 1 is further provided with a horizontal step 7, a stress groove 3 is formed between the reserved edge and the step 7, the stress groove 3 is higher than the reserved edge and the step 7 and has a set width, a welding surface 2 is formed at the position, higher than the step 7, of the stress groove 3, the silicon-aluminum tube shell 1 is used for laser sealing, the welding surface 2 of the silicon-aluminum tube shell structure 1 is a welding area during laser sealing, the stress groove 3 of the silicon-aluminum tube shell is used for stress buffering during tube deformation in the sealing process, and the welding surface 2 and the step 7 at the lap joint of the cover plate 5 are used for positioning during sealing of the cover plate 5. The distances from the welding seam centers of the welding surfaces 2 to the edges of the tube shell are different, so that the design of a mounting angle and a connector during the design of the tube shell is facilitated.
In this embodiment, the shell material of the silicon-aluminum pipe shell 1 is Al50Si, which is suitable for matching with the thermal expansion coefficient of the ceramic substrate and the GaAs single piece in the microwave component, and the cover plate 5 is made of Al27Si, which has more metal phases and better plastic deformation capability for counteracting the thermal stress during the sealing and welding process.
The step width 9 is not less than 0.8mm, and laser breakdown is prevented from reaching the inside of the tube shell in the sealing and welding process. The width 8 of the stress groove is equal to the width 11 of the narrow side in the reserved side of the silicon-aluminum tube shell 1, and the width does not exceed 1 mm. The thickness 13 of the stress groove 3 is not less than that of the cover plate 5, so that stress buffering is facilitated when the pipe shell deforms in the sealing and welding process. In the embodiment, the length and the width of the cover plate 5 in the silicon-aluminum pipe shell 1 are not more than 80 multiplied by 80cm, the thickness of the cover plate 5 is not less than 0.5mm, and the cover plate 5 is prevented from generating large mechanical stress to a welding seam due to deformation.
Example 2: on the basis of embodiment 1, the structure for realizing laser sealing welding of different welding surfaces of the silicon-aluminum tube shell provided by the embodiment further comprises a mounting hole 4, and the mounting hole is formed in the side, with a wider width, of the reserved side. The mounting hole 4 is used for interconnection of the silicon-aluminum pipe shell and other products.
The structure firstly adopts an ultrasonic cleaning machine to clean the silicon-aluminum tube shell before laser sealing during welding, then adopts a laser seal welding system to bake and seal the silicon-aluminum tube shell in vacuum, and utilizes a pressure tool to fix the spot welding front cover plate and the tube shell. The schematic view of the sealed weld 6 is shown in fig. 4.
The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by the arbitrary combination of the above technical features. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered as the protection scope of the present invention.
Claims (7)
1. The utility model provides a realize structure of different welding faces of silicon-aluminum pipe shell laser seal welding which characterized in that includes: the pipe comprises a silicon-aluminum pipe shell and a cover plate, wherein the silicon-aluminum pipe shell comprises a welding surface, a stress groove, a welding surface and a step, the periphery of the silicon-aluminum pipe shell is provided with a reserved edge with different widths, the silicon-aluminum pipe shell is further provided with a horizontal step, the reserved edge is provided with the stress groove between the steps, the stress groove is higher than the reserved edge and the steps and is provided with a set width, the welding surface is formed at the position where the stress groove is higher than the step, the welding surface of the silicon-aluminum pipe shell is a welding area when laser seal welding is carried out, the stress groove of the silicon-aluminum pipe shell is used for stress buffering when the pipe deforms in the seal welding process, and the step at the lap joint of the welding surface and the cover plate is used for positioning when the cover plate seal welding is carried out.
2. The structure for realizing laser sealing of different welding surfaces of the silicon-aluminum pipe shell as claimed in claim 1, wherein the material of the silicon-aluminum pipe shell is Al50Si, and the material of the cover plate is Al27 Si.
3. The structure for realizing laser sealing and welding of different welding surfaces of the silicon-aluminum tube shell as claimed in claim 1, wherein the silicon-aluminum tube shell further comprises a mounting hole, and the mounting hole is arranged on the side with wider width in the reserved side.
4. The structure for realizing laser sealing and welding of different welding surfaces of a silicon-aluminum tube shell as claimed in claim 1, wherein the width of the step is not less than 0.8 mm.
5. The structure for realizing laser sealing and welding of different welding surfaces of the silicon-aluminum tube shell as claimed in claim 1, wherein the width of the stress groove is equal to the width of the narrow edge in the reserved edge of the silicon-aluminum tube shell.
6. The structure for realizing laser sealing of different welding surfaces of a silicon-aluminum shell according to claim 1, wherein the length and the width of the cover plate are not more than 80 x 80cm, and the thickness of the cover plate is not less than 0.5 mm.
7. The structure for realizing laser sealing and welding of different welding surfaces of the silicon-aluminum shell pipe is characterized in that the thickness of the stress groove is not less than that of the cover plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120365880.8U CN214684741U (en) | 2021-02-09 | 2021-02-09 | Structure for realizing laser sealing welding of different welding surfaces of silicon-aluminum pipe shell |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120365880.8U CN214684741U (en) | 2021-02-09 | 2021-02-09 | Structure for realizing laser sealing welding of different welding surfaces of silicon-aluminum pipe shell |
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| CN214684741U true CN214684741U (en) | 2021-11-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114843227A (en) * | 2022-03-25 | 2022-08-02 | 中国电子科技集团公司第二十九研究所 | Microwave part multi-material mixed sealing structure and process design method |
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2021
- 2021-02-09 CN CN202120365880.8U patent/CN214684741U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114843227A (en) * | 2022-03-25 | 2022-08-02 | 中国电子科技集团公司第二十九研究所 | Microwave part multi-material mixed sealing structure and process design method |
| CN114843227B (en) * | 2022-03-25 | 2024-02-02 | 中国电子科技集团公司第二十九研究所 | Multi-material mixed sealing structure of microwave component and process design method |
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