CN217086160U - Tin whisker-proof tin-plating copper-clad steel wire - Google Patents
Tin whisker-proof tin-plating copper-clad steel wire Download PDFInfo
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- CN217086160U CN217086160U CN202123052435.5U CN202123052435U CN217086160U CN 217086160 U CN217086160 U CN 217086160U CN 202123052435 U CN202123052435 U CN 202123052435U CN 217086160 U CN217086160 U CN 217086160U
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Abstract
The utility model belongs to the technical field of the covering steel wire, a tin whisker prevention tin-plated copper clad steel wire is disclosed, including setting up the steel core line at the inlayer, the outer cladding of steel core line has the copper layer, the outer cladding of copper layer has the tin coating, the copper layer with be provided with cobalt nickel alloy cladding material between the tin coating, there is outer antioxidation layer outside the outer cladding of tin coating, the thickness of cobalt nickel alloy cladding material is 5-15 mu m. This scheme is through setting up the barrier layer that constitutes by cobalt nickel alloy cladding material between copper layer and tin coating, can prevent that the copper atom from spreading to the tin coating of outside to prevent the tin palpus, cobalt nickel alloy cladding material still makes the package copper wire more corrosion-resistant, high temperature resistant and intensity high in addition, and through outer antioxidation coating, has further increased package copper wire's oxidation resistance, increase of service life greatly.
Description
Technical Field
The utility model relates to a copper-clad wire technical field, more specifically say, relate to prevent tin palpus tin-plating copper clad steel wire.
Background
The tinned copper clad steel wire is a 'CP' wire which is commonly said, in recent years, with the continuous rising of the price of nonferrous metals on the market, the prices of pure copper and pure aluminum products are rapidly increased, and a new product tinned copper clad steel wire is produced. The steel wire is a 'renewal' product of a pure copper wire and generally comprises a soft state (A), a hard state (H) and two types, and the common tinned copper clad steel wire has the problems of poor oxidation resistance, low strength, high price and easy generation of tin whiskers.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model aims to provide a prevent that tin must tin-plating copper clad steel wire.
In order to solve the above problems, the utility model adopts the following technical proposal.
The tin whisker prevention tinned copper clad steel wire comprises a steel core wire arranged on an inner layer, wherein a copper layer is coated outside the steel core wire, a tinned layer is coated outside the copper layer, a cobalt-nickel alloy coating is arranged between the copper layer and the tinned layer, an outer oxidation resisting layer is coated outside the tinned layer, and the thickness of the cobalt-nickel alloy coating is 5-15 mu m.
As a further description of the above technical solution: the inner periphery and the outer periphery of the cobalt-nickel alloy plating layer are integrally formed with a circle of convex parts, the copper layer and the tin plating layer are integrally formed with concave parts tightly matched with the convex parts, and the copper layer and the cobalt-nickel alloy plating layer, the cobalt-nickel alloy plating layer and the tin plating layer are tightly connected with the convex parts and the concave parts corresponding to the copper layer and the cobalt-nickel alloy plating layer.
As a further description of the above technical solution: the steel core wire is a low-carbon steel core wire.
As a further description of the above technical solution: the thickness of the copper layer is 8-10 um.
As a further description of the above technical solution: the thickness of the tin coating is 6-10um
As a further description of the above technical solution: the convex parts on the inner periphery and the outer periphery of the cobalt-nickel alloy coating are arranged in a staggered mode, and are trapezoidal.
Compared with the prior art, the utility model has the advantages of:
the scheme is that the blocking layer formed by the cobalt-nickel alloy coating is arranged between the copper layer and the tin coating, so that the outward tin coating diffusion of copper atoms can be prevented, tin whiskers are prevented, the cobalt-nickel alloy coating enables the clad steel wire to be more corrosion-resistant, high-temperature-resistant and high in strength, the oxidation resistance of the clad steel wire is further improved through the outer oxidation resistant layer, and the service life is greatly prolonged.
The protruding portions arranged on the inner periphery and the outer periphery of the cobalt-nickel alloy coating and the recessed portions corresponding to the protruding portions enable the copper layer and the tin-plated layer to be connected with the cobalt-nickel alloy coating more tightly, meanwhile, the trapezoidal protruding portions arranged in a staggered mode can play a stronger supporting role, and the steel-clad wire is guaranteed to have better strength, not prone to fracture and long in service life.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
The reference numbers in the figures illustrate:
1. a steel core wire; 2. a copper layer; 3. plating a tin layer; 4. a cobalt-nickel alloy plating layer; 5. an outer oxidation resistant layer; 6. a rising part; 7. a recessed portion.
Detailed Description
The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention;
referring to fig. 1, the tin whisker resistant tin-plated copper-clad steel wire comprises a steel core wire 1 arranged at an inner layer, wherein a copper layer 2 is coated outside the steel core wire 1, a tin plating layer 3 is plated outside the copper layer 2, a cobalt-nickel alloy plating layer 4 is arranged between the copper layer 2 and the tin plating layer 3, an outer oxidation resistant layer 5 is coated outside the tin plating layer 3, and the thickness of the cobalt-nickel alloy plating layer 4 is 5-15 μm.
Further, the equal integrated into one piece in interior week and the periphery of cobalt nickel alloy cladding material 4 has round bellying 6, homogeneous body shaping has the depressed part 7 with the tight complex of bellying 6 on copper layer 2 and tin coating 3, copper layer 2 and cobalt nickel alloy cladding material 4, cobalt nickel alloy cladding material 4 and tin coating 3 are through the bellying 6 and the depressed part 7 zonulae occludens rather than corresponding, through setting up at the bellying 6 of the interior week and the periphery of cobalt nickel alloy cladding material 4 and the depressed part 7 that corresponds with bellying 6, make copper layer 2, tin coating 3 is connected inseparabler with cobalt nickel alloy cladding material.
Wherein, the 6 dislocation sets of bellying of interior week and periphery on the cobalt nickel alloy cladding material 4, and bellying 6 is trapezoidal, and trapezoidal and dislocation set's bellying 6 can play stronger supporting role, guarantees that this covering steel wire has better intensity, difficult fracture.
In addition, the steel core wire 1 is a low-carbon steel core wire, the thickness of the copper layer 2 is 8-10um, and the thickness of the tin coating layer 3 is 6-10 um.
In summary, the following steps: the invention has good conductivity, the cobalt-nickel alloy plating layer 4 is arranged between the copper layer 2 and the tin plating layer 3 and matched with the trapezoidal convex part 6 and the trapezoidal concave part 7, so that copper atoms can be prevented from diffusing to the tin plating layer 3 at the outer side, the corrosion resistance and the oxidation resistance are stronger, and the service life of the material can be greatly prolonged.
The above description is only the preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by replacing or changing the technical solution and the improvement concept of the present invention with equivalents and modifications within the technical scope of the present invention.
Claims (6)
1. Prevent tin palpus tin-plating copper clad steel wire, its characterized in that: the steel core wire comprises a steel core wire (1) arranged on an inner layer, wherein a copper layer (2) is coated outside the steel core wire (1), a tin coating (3) is plated outside the copper layer (2), a cobalt-nickel alloy coating (4) is arranged between the copper layer (2) and the tin coating (3), an outer oxidation resisting layer (5) is coated outside the tin coating (3), and the thickness of the cobalt-nickel alloy coating (4) is 5-15 mu m.
2. The tin whisker resistant tin-plated copper-clad steel wire as recited in claim 1, wherein: the equal integrated into one piece in interior week and the periphery of cobalt nickel alloy cladding material (4) has round bellying (6), homogeneous body shaping has on copper layer (2) and tin coating (3) and closely cooperates depressed part (7) with bellying (6), copper layer (2) and cobalt nickel alloy cladding material (4), cobalt nickel alloy cladding material (4) and tin coating (3) are through bellying (6) and depressed part (7) zonulae occludens rather than corresponding.
3. The tin whisker resistant tin-plated copper-clad steel wire as recited in claim 1, wherein: the steel core wire (1) is a low-carbon steel core wire.
4. The tin whisker resistant tin-plated copper-clad steel wire as recited in claim 1, wherein: the thickness of the copper layer (2) is 8-10 um.
5. The tin whisker resistant tin-plated copper-clad steel wire as recited in claim 1, wherein: the thickness of the tin coating (3) is 6-10 um.
6. The tin whisker resistant tin-plated copper-clad steel wire as recited in claim 2, wherein: the upper inner periphery and the outer periphery of the cobalt-nickel alloy coating (4) are provided with the protrusions (6) in a staggered mode, and the protrusions (6) are trapezoidal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123052435.5U CN217086160U (en) | 2021-12-07 | 2021-12-07 | Tin whisker-proof tin-plating copper-clad steel wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123052435.5U CN217086160U (en) | 2021-12-07 | 2021-12-07 | Tin whisker-proof tin-plating copper-clad steel wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217086160U true CN217086160U (en) | 2022-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123052435.5U Active CN217086160U (en) | 2021-12-07 | 2021-12-07 | Tin whisker-proof tin-plating copper-clad steel wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217086160U (en) |
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2021
- 2021-12-07 CN CN202123052435.5U patent/CN217086160U/en active Active
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