CN213845059U - Three-layer composite structure for preparing electrical contact material - Google Patents
Three-layer composite structure for preparing electrical contact material Download PDFInfo
- Publication number
- CN213845059U CN213845059U CN202022580968.XU CN202022580968U CN213845059U CN 213845059 U CN213845059 U CN 213845059U CN 202022580968 U CN202022580968 U CN 202022580968U CN 213845059 U CN213845059 U CN 213845059U
- Authority
- CN
- China
- Prior art keywords
- alloy layer
- layer
- copper alloy
- electrical contact
- composite structure
- 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.)
- Active
Links
Images
Landscapes
- Contacts (AREA)
Abstract
The utility model discloses a three-layer composite structure for preparing electrical contact material, including silver alloy layer, copper alloy layer and brazing filler metal layer, the brazing filler metal layer is fixed to be set up on the one end terminal surface of copper alloy layer, has seted up flutedly on the other end terminal surface of copper alloy layer, and silver alloy layer fills the setting and is in the recess. Adopt above-mentioned structure, the utility model discloses a set up the recess on the other end terminal surface on the copper alloy layer to make the silver alloy layer fill the setting in the recess, thereby make silver alloy layer and copper alloy layer combine more firmly reliable, and effectively solved the problem that the edge fracture easily appears on the silver alloy layer in composite process.
Description
Technical Field
The utility model relates to an alloy material technical field, concretely relates to three-layer composite structure for preparing electrical contact material.
Background
At present, the electrical contact industry is gradually moving to the way of saving silver, environmental protection, electrical apparatus manufacturer is guaranteeing under the prerequisite of product quality, often adopt the scheme that the silver alloy contact was replaced to the copper alloy contact, but the copper alloy electrical contact oxidation resistance is poor, contact surface can form the oxide film after depositing for a long time, in addition in the use, can release a large amount of heats when electrical apparatus circular telegram, this also can cause the electrical contact surface to be heated the oxidation and generate the oxide film, thereby lead to the contact resistance increase, influence the electric conductivity and the heat conductivility of product, the temperature rise greatly increased of electrical apparatus, and then can accelerate the inefficacy of electrical components and parts, cause its life to shorten. Therefore, the applicant previously filed a three-layer composite electrical contact material composed of a silver alloy layer, a copper alloy layer and a solder layer, which is filed under the application number of 201610488039.1, and through the combination of the silver alloy layer and the copper alloy layer, the purpose of saving silver is achieved, and the oxidation in the storage process can be effectively prevented and the oxidation degree of the electrical contact in the power-on process of an electrical appliance can be reduced. In addition, by adding the brazing filler metal layer, the welding efficiency can be effectively improved. However, in practical application, the reliability of the three-layer material after being compounded still needs to be improved, especially for the silver alloy layer, which is easy to have the problem of edge cracking during compounding.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art, the utility model provides a compound firm more reliable and can effectively avoid the three-layer composite structure who is used for preparing electrical contact material of silver alloy layer edge fracture.
In order to achieve the above object, the utility model provides a three-layer composite structure for preparing electrical contact material, including silver alloy layer, copper alloy layer and brazing filler metal layer, the brazing filler metal layer is fixed to be set up on the one end terminal surface of copper alloy layer, has seted up the recess on the other end terminal surface of copper alloy layer, and silver alloy layer fills the setting and is in the recess.
The utility model has the advantages that: adopt above-mentioned structure, the utility model discloses a set up the recess on the other end terminal surface on the copper alloy layer to make the silver alloy layer fill the setting in the recess, thereby make silver alloy layer and copper alloy layer combine more firmly reliable, and effectively solved the problem that the edge fracture easily appears on the silver alloy layer in composite process.
The utility model discloses can further set up to the arc structure sunken to the middle part is set to the bottom surface of recess. The arrangement effectively enlarges the contact area of the silver alloy layer and the copper alloy layer, thereby improving the bonding strength, the electric conductivity and the heat conductivity of the composite material.
The utility model discloses still can further set up to form between recess lateral wall and the bottom surface and be connected through the convex arc angle to both sides. The radius of the arc angle is not less than 0.05 mm. By arranging the arc angles protruding towards the two sides, the arc angles can be filled after the silver alloy layer is pressed in a compounding manner, so that the limit of filling the silver alloy layer in the groove of the copper alloy layer is further formed, and the copper alloy layer and the silver alloy layer are combined more stably.
The utility model can be further provided with netted concave veins on the end surface of the copper alloy layer connected with the brazing filler metal layer. This arrangement also allows the solder layer to form a more secure connection with the copper alloy layer.
The utility model discloses still can further set up to the thickness on silver alloy layer be 0.05mm ~3.0mm, the thickness on copper alloy layer is 0.5mm ~8.0mm, and the thickness on brazing filler metal layer is 0.05mm ~0.90 mm. The selection of the range can control the silver content in a better range, generally 5-30%, on the premise of ensuring the performance of the contact material, so as to achieve the purpose of saving silver.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a cross-sectional view of a copper alloy layer according to the present invention;
FIG. 3 is a schematic view of a structure of a mesh-like embossment on a copper alloy layer.
Detailed Description
As shown in fig. 1, 2 and 3, a three-layer composite structure for preparing an electrical contact material is provided, which comprises a silver alloy layer 1, a copper alloy layer 2 and a solder layer 3, wherein the solder layer 3 is fixedly arranged on one end face of the copper alloy layer 2, a groove 4 is arranged on the other end face of the copper alloy layer 2, and the silver alloy layer 1 is filled in the groove 4.
Adopt above-mentioned structure, the utility model discloses a set up recess 4 on copper alloy layer 2's other end terminal surface to make silver alloy layer 1 fill the setting in the recess 4, thereby make silver alloy layer 1 and copper alloy layer 2 combine more firmly reliable, and effectively solved the problem that edge fracture easily appears in composite in-process silver alloy layer 1.
The utility model discloses can further set up to the bottom surface 41 of recess 4 sets to the arc structure sunken to the middle part. The arrangement effectively enlarges the contact area of the silver alloy layer 1 and the copper alloy layer 2, thereby improving the bonding strength, the electric conductivity and the heat conductivity of the composite material.
The utility model can be further arranged to form connection between the groove side wall 42 and the bottom surface 41 through the arc angle 43 protruding towards both sides. The radius of the arc angle 43 is not less than 0.05 mm. By arranging the arc angles 43 protruding towards the two sides, the arc angles 43 can be filled after the silver alloy layer 1 is compositely pressed, so that the limit of filling the silver alloy layer 1 in the copper alloy layer groove 4 is further formed, and the copper alloy layer 2 and the silver alloy layer 1 are combined more stably.
The utility model can be further provided with a reticular concave grain 5 distributed on the end face of the copper alloy layer 2 connected with the brazing filler metal layer 3. This arrangement also enables the solder layer 3 to form a more secure connection with the copper alloy layer 2.
The utility model discloses still can further set up to silver alloy layer 1's thickness be 0.05mm ~3.0mm, copper alloy layer 2's thickness is 0.5mm ~8.0mm, and brazing filler metal layer 3's thickness is 0.05mm ~0.90 mm. The selection of the range can control the silver content in a better range, generally 5-30%, on the premise of ensuring the performance of the contact material, so as to achieve the purpose of saving silver.
Claims (6)
1. A three-layer composite structure for preparing an electrical contact material comprises a silver alloy layer, a copper alloy layer and a solder layer, wherein the solder layer is fixedly arranged on one end face of the copper alloy layer, and the three-layer composite structure is characterized in that: and a groove is formed in the end face of the other end of the copper alloy layer, and the silver alloy layer is filled in the groove.
2. A three-layer composite structure for making an electrical contact material as claimed in claim 1, wherein: the bottom surface of the groove is set into an arc-shaped structure which is sunken towards the middle part.
3. A three-layer composite structure for making an electrical contact material as claimed in claim 2, wherein: the side wall of the groove is connected with the bottom surface through arc angles protruding towards two sides.
4. A three-layer composite structure for making an electrical contact material according to claim 3, wherein: the radius of the arc angle is not less than 0.05 mm.
5. A three-layer composite structure for the preparation of an electrical contact material according to claim 1 or 2 or 3 or 4, characterized in that: the end face of the end where the copper alloy layer is connected with the brazing filler metal layer is distributed with reticular concave grains.
6. A three-layer composite structure for the preparation of an electrical contact material according to claim 1 or 2 or 3 or 4, characterized in that: the thickness of the silver alloy layer is 0.05 mm-3.0 mm, the thickness of the copper alloy layer is 0.5 mm-8.0 mm, and the thickness of the brazing filler metal layer is 0.05 mm-0.90 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022580968.XU CN213845059U (en) | 2020-11-10 | 2020-11-10 | Three-layer composite structure for preparing electrical contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022580968.XU CN213845059U (en) | 2020-11-10 | 2020-11-10 | Three-layer composite structure for preparing electrical contact material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213845059U true CN213845059U (en) | 2021-07-30 |
Family
ID=77014909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022580968.XU Active CN213845059U (en) | 2020-11-10 | 2020-11-10 | Three-layer composite structure for preparing electrical contact material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213845059U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114227064A (en) * | 2021-12-27 | 2022-03-25 | 浙江亚通焊材有限公司 | Silver-copper-titanium active solder laminated composite strip and preparation method thereof |
| CN114464473A (en) * | 2022-01-08 | 2022-05-10 | 浙江福达合金材料科技有限公司 | High-reliability rivet type electric contact, forming equipment and forming method |
-
2020
- 2020-11-10 CN CN202022580968.XU patent/CN213845059U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114227064A (en) * | 2021-12-27 | 2022-03-25 | 浙江亚通焊材有限公司 | Silver-copper-titanium active solder laminated composite strip and preparation method thereof |
| CN114227064B (en) * | 2021-12-27 | 2022-10-04 | 浙江亚通焊材有限公司 | Silver-copper-titanium active solder laminated composite strip and preparation method thereof |
| CN114464473A (en) * | 2022-01-08 | 2022-05-10 | 浙江福达合金材料科技有限公司 | High-reliability rivet type electric contact, forming equipment and forming method |
| CN114464473B (en) * | 2022-01-08 | 2023-08-01 | 浙江福达合金材料科技有限公司 | High-reliability rivet type electric contact, forming equipment and forming method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213845059U (en) | Three-layer composite structure for preparing electrical contact material | |
| CN105234544A (en) | Resistance spot welding electrode and manufacturing method thereof | |
| CN102097200A (en) | Core column component of winding type pasted electronic element and manufacturing method thereof | |
| TWI761795B (en) | Coil component and its manufacturing method | |
| JP2012185985A (en) | Electric wire with terminal fitting, and method for manufacturing electric wire with terminal fitting | |
| CN106342011B (en) | The welding method of a kind of stranded copper wire wire harness and silver foil | |
| WO2013183160A1 (en) | Power line with terminal metal fitting and method for fabrication of power line with terminal metal fitting | |
| CN114094286A (en) | Preparation method of non-welding conductive connection battery cell and battery cell | |
| CN201369426Y (en) | Connection terminal | |
| JP5017582B2 (en) | Capacitor lead wire | |
| CN218499296U (en) | Polyimide heating sheet | |
| CN203774291U (en) | Metal connecting piece and power semiconductor module | |
| TW200305176A (en) | Solid electrolytic capacitor and method for producing the same | |
| CN112712950A (en) | Power resistor and preparation method thereof | |
| CN108428687B (en) | Graphene metal bonding pad and preparation method thereof | |
| CN201000920Y (en) | Welding press type water-cooled cable | |
| CN112216504A (en) | Manufacturing method of inductance device and inductance device | |
| CN201425893Y (en) | Ceramic capacitor | |
| CN210379233U (en) | Button battery with tin wires and tin soldering wires | |
| CN216850243U (en) | Lithium ion battery tab and current collector connection structure | |
| CN211670063U (en) | Forming structure of surface-mounted inductor | |
| CN103779305A (en) | Metal connecting piece and power semiconductor module | |
| CN102615369A (en) | Method for manufacturing tri-metal composite rivet contact | |
| CN218849279U (en) | Welded structure and welded structure of capacitor spare part | |
| JPH0132353Y2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |