CN105316735A - Environment-friendly silver-plated contact of fuse - Google Patents
Environment-friendly silver-plated contact of fuse Download PDFInfo
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- CN105316735A CN105316735A CN201510928526.0A CN201510928526A CN105316735A CN 105316735 A CN105316735 A CN 105316735A CN 201510928526 A CN201510928526 A CN 201510928526A CN 105316735 A CN105316735 A CN 105316735A
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Abstract
The invention discloses an environment-friendly silver-plated contact of a fuse. The environment-friendly silver-plated contact is prepared by adopting an environment-friendly silver plating process. The environment-friendly silver plating process comprises the following steps: 1) treatment before plating; 2) anti-silver replacement treatment: immersing a fuse contact undergoing chemical polishing and cleaning with water in an anti-silver replacement treatment liquid and stirring the fuse contact twice to three times to ensure that the anti-silver replacement treatment liquid can wet and cover the surface of the contact, wherein the anti-silver replacement treatment liquid comprises the following components in parts by weight: 20-30 parts of NaOH, 15-20 parts of AgNO3, 5-10 parts of anti-silver replacement additive and 40-60 parts of distilled water; 3) silver plating; and 4) treatment after plating. The environment-friendly silver-plated contact has the beneficial effects that by adopting the environment-friendly silver plating process, a contact silver coating is not easy to fall off or discolor and the electrical conductivity and weldability of the contact are improved; the process is simple, safe and environmental friendly.
Description
Technical field
The present invention relates to fusible cut-out field, particularly relate to a kind of environment-friendly type silver plated contact of fusible cut-out.
Background technology
At present, the connector of electronic industry, instrument industry extensively adopts silver plating process, to reduce the contact resistance of metallic surface, improves the performance of product.
Contact is the key part of fusible cut-out, and should contact between contact closely, the contact pressure of both sides should be even, and contact surface should be smooth, clean, generally all adopts direct plating silver process, make contact have good performance, thus guarantee the use properties of fusible cut-out.But existing silver plating process needs to adopt before silvering cyanide copper plating and silver plating process in advance, complex process, and containing a large amount of toxic cyanide in cyanide copper plating liquid, do not meet cleaner production requirement, and contact silvered film easily comes off, variable color, thus the use properties of fusible cut-out can be affected, and reduce its work-ing life.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of environment-friendly type silver plated contact of fusible cut-out, adopts environment-friendly type silver plating process, makes contact silvered film difficult drop-off, variable color, improve electroconductibility and the weldability of contact, and technique is simple, safety and environmental protection.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: the environment-friendly type silver plated contact providing a kind of fusible cut-out, and described environment-friendly type silver plated contact adopts environment-friendly type silver plating process to make, and comprises the following steps:
1) treatment before plating: secondary oil removal treatment is carried out to the surface of fuse contact, and then carries out chemical rightenning;
2) anti-silver-colored replacement Treatment: by through chemical rightenning, wash clean fuse contact and immerse in anti-silver-colored replacement Treatment liquid, and stir through 2-3 time, ensure that described anti-silver-colored replacement Treatment liquid can soak and cover contact surface, the described anti-composition of silver-colored replacement Treatment liquid and the mass fraction of each composition are: NaOH20-30 part, AgNO
315-20 part, anti-silver displacement additive 5-10 part, distilled water 40-60 part;
3) silver-plated: the fuse contact through anti-silver-colored replacement Treatment is immersed in silver plating solution, adopt the pulse power silver-plated at normal temperatures;
4) plating posttreatment: be immersed in anti-silver tarnish solution by the fuse contact through silver-plated process, soak 2-5 minute under normal temperature, drains after then taking out cleaning.
In a preferred embodiment of the present invention, content >=90% of argent in described silver plating solution.
In a preferred embodiment of the present invention, the silvered film thickness of described environment-friendly type silver plated contact is 1-3 μm.
The invention has the beneficial effects as follows: the present invention adopts environment-friendly type silver plating process, make contact silvered film difficult drop-off, variable color, improve electroconductibility and the weldability of contact, and technique is simple, safety and environmental protection.
Embodiment
Below preferred embodiment of the present invention is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
The embodiment of the present invention comprises:
Embodiment one:
An environment-friendly type silver plated contact for fusible cut-out, described environment-friendly type silver plated contact adopts environment-friendly type silver plating process to make, and comprises the following steps:
1) treatment before plating: secondary oil removal treatment is carried out to the surface of fuse contact, and then carries out chemical rightenning;
2) anti-silver-colored replacement Treatment: by through chemical rightenning, wash clean fuse contact and immerse in anti-silver-colored replacement Treatment liquid, and stir through 2-3 time, ensure that described anti-silver-colored replacement Treatment liquid can soak and cover contact surface, the described anti-composition of silver-colored replacement Treatment liquid and the mass fraction of each composition are: NaOH20 part, AgNO
315 parts, anti-silver displacement additive 5 parts, distilled water 60 parts;
3) silver-plated: to immerse in silver plating solution by the fuse contact through anti-silver-colored replacement Treatment, adopt the pulse power silver-plated at normal temperatures, in described silver plating solution, the content of argent is 92%
4) plating posttreatment: be immersed in by the fuse contact through silver-plated process in anti-silver tarnish solution, soaks 2 minutes under normal temperature, drains after then taking out cleaning.
Wherein, the silvered film thickness of described environment-friendly type silver plated contact is 1 μm.
Embodiment two:
An environment-friendly type silver plated contact for fusible cut-out, described environment-friendly type silver plated contact adopts environment-friendly type silver plating process to make, and comprises the following steps:
1) treatment before plating: secondary oil removal treatment is carried out to the surface of fuse contact, and then carries out chemical rightenning;
2) anti-silver-colored replacement Treatment: by through chemical rightenning, wash clean fuse contact and immerse in anti-silver-colored replacement Treatment liquid, and stir through 2-3 time, ensure that described anti-silver-colored replacement Treatment liquid can soak and cover contact surface, the described anti-composition of silver-colored replacement Treatment liquid and the mass fraction of each composition are: NaOH25 part, AgNO
318 parts, anti-silver displacement additive 8 parts, distilled water 49 parts;
3) silver-plated: to immerse in silver plating solution by the fuse contact through anti-silver-colored replacement Treatment, adopt the pulse power silver-plated at normal temperatures, in described silver plating solution, the content of argent is 94%
4) plating posttreatment: be immersed in by the fuse contact through silver-plated process in anti-silver tarnish solution, soaks 4 minutes under normal temperature, drains after then taking out cleaning.
Wherein, the silvered film thickness of described environment-friendly type silver plated contact is 2 μm.
Embodiment three:
An environment-friendly type silver plated contact for fusible cut-out, described environment-friendly type silver plated contact adopts environment-friendly type silver plating process to make, and comprises the following steps:
1) treatment before plating: secondary oil removal treatment is carried out to the surface of fuse contact, and then carries out chemical rightenning;
2) anti-silver-colored replacement Treatment: by through chemical rightenning, wash clean fuse contact and immerse in anti-silver-colored replacement Treatment liquid, and stir through 2-3 time, ensure that described anti-silver-colored replacement Treatment liquid can soak and cover contact surface, the described anti-composition of silver-colored replacement Treatment liquid and the mass fraction of each composition are: NaOH30 part, AgNO
320 parts, anti-silver displacement additive 10 parts, distilled water 40 parts;
3) silver-plated: to immerse in silver plating solution by the fuse contact through anti-silver-colored replacement Treatment, adopt the pulse power silver-plated at normal temperatures, in described silver plating solution, the content of argent is 95%
4) plating posttreatment: be immersed in by the fuse contact through silver-plated process in anti-silver tarnish solution, soaks 5 minutes under normal temperature, drains after then taking out cleaning.
Wherein, the silvered film thickness of described environment-friendly type silver plated contact is 3 μm.
Present invention is disclosed a kind of environment-friendly type silver plated contact of fusible cut-out, adopt environment-friendly type silver plating process, make contact silvered film difficult drop-off, variable color, improve electroconductibility and the weldability of contact, and technique is simple, safety and environmental protection.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (3)
1. an environment-friendly type silver plated contact for fusible cut-out, is characterized in that, described environment-friendly type silver plated contact adopts environment-friendly type silver plating process to make, and comprises the following steps:
1) treatment before plating: secondary oil removal treatment is carried out to the surface of fuse contact, and then carries out chemical rightenning;
2) anti-silver-colored replacement Treatment: by through chemical rightenning, wash clean fuse contact and immerse in anti-silver-colored replacement Treatment liquid, and stir through 2-3 time, ensure that described anti-silver-colored replacement Treatment liquid can soak and cover contact surface, the described anti-composition of silver-colored replacement Treatment liquid and the mass fraction of each composition are: NaOH20-30 part, AgNO
315-20 part, anti-silver displacement additive 5-10 part, distilled water 40-60 part;
3) silver-plated: the fuse contact through anti-silver-colored replacement Treatment is immersed in silver plating solution, adopt the pulse power silver-plated at normal temperatures;
4) plating posttreatment: be immersed in anti-silver tarnish solution by the fuse contact through silver-plated process, soak 2-5 minute under normal temperature, drains after then taking out cleaning.
2. the environment-friendly type silver plated contact of fusible cut-out according to claim 1, is characterized in that, content >=90% of argent in described silver plating solution.
3. the environment-friendly type silver plated contact of fusible cut-out according to claim 1, is characterized in that, the silvered film thickness of described environment-friendly type silver plated contact is 1-3 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510928526.0A CN105316735A (en) | 2015-12-15 | 2015-12-15 | Environment-friendly silver-plated contact of fuse |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510928526.0A CN105316735A (en) | 2015-12-15 | 2015-12-15 | Environment-friendly silver-plated contact of fuse |
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| CN105316735A true CN105316735A (en) | 2016-02-10 |
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| CN201510928526.0A Pending CN105316735A (en) | 2015-12-15 | 2015-12-15 | Environment-friendly silver-plated contact of fuse |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106591898A (en) * | 2016-12-21 | 2017-04-26 | 贵州振华群英电器有限公司（国营第八九厂） | Silver plating process for contactor plastic compression part |
| CN117512725A (en) * | 2023-11-07 | 2024-02-06 | 东莞市贝沃金属有限公司 | Tin-zinc wire silver plating process for high-current fuse |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106591898A (en) * | 2016-12-21 | 2017-04-26 | 贵州振华群英电器有限公司（国营第八九厂） | Silver plating process for contactor plastic compression part |
| CN117512725A (en) * | 2023-11-07 | 2024-02-06 | 东莞市贝沃金属有限公司 | Tin-zinc wire silver plating process for high-current fuse |
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Application publication date: 20160210 |
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