CN103981552A - Novel post-processing method for silver-plated copper particles - Google Patents
Novel post-processing method for silver-plated copper particles Download PDFInfo
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- CN103981552A CN103981552A CN201410178289.6A CN201410178289A CN103981552A CN 103981552 A CN103981552 A CN 103981552A CN 201410178289 A CN201410178289 A CN 201410178289A CN 103981552 A CN103981552 A CN 103981552A
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- silver
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- shot copper
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Abstract
The invention relates to a novel post-processing method for silver-plated copper particles. The method comprises the steps: taking the copper particles after electroplating silver, carrying out three-time water washing, grinding, carrying out three-time water washing, washing with pure water at the temperature of 80-90 DEG C for 2-3 min, and baking at the temperature of 130-180 DEG C for 0.5-1.5 h. According to the method, the exterior of a silver layer is covered with a passivation film; and at the same time, the surface of the silver layer is planished in the grinding process, so that the passivation film is allowed to be in full contact with the silver layer, so as to play good isolation and protection effects, and simultaneously make the surface smooth and shiny.
Description
Technical field
The present invention relates to the novel post-treating method of a kind of silver-plated shot copper, belong to field of metal surface treatment technology.
Background technology
Silver is that a kind of white is bright, malleable, plastic and have the metal of reflecting power, has good electroconductibility.The chemical stability of silver is good, inoperative to the oxygen in water and atmosphere, is dissolved in nitric acid, is slightly soluble in sulfuric acid, there is good chemical stability, but while running into sulphur and sulfide, surface is easy to change, form brown to the silver sulfide of black, can reduce reflective, conduction, the ability of rivet welding and the quality of outward appearance.
Summary of the invention
Technical problem to be solved by this invention is to provide the novel post-treating method of a kind of silver-plated shot copper; present method covers one deck passive film in the outside of silver layer; in process of lapping, silver layer surface is tied simultaneously; passive film is fully contacted with silver layer; play good isolated provide protection, can make its smoothly light simultaneously.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: the novel post-treating method of a kind of silver-plated shot copper, comprising: the shot copper after power taking is silver-plated, and three road washings, grind, three road washings, 80～90 ℃ of pure water are washed 2～3min, 130～180 ℃ of baking 0.5～1.5h.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described three road washings are washed for shot copper enters three washing baths successively.
Further, described in be ground to in shredder with lapping liquid 300mL, water 10L, shot copper 40～50kg, at ambient temperature, 60 turn/min grind 15～20min.
Further, described lapping liquid is by refining agent, tin abrasive (Wuxi City trade Co., Ltd is commercially available), Kang Li sheet (Wuxi City Li Qiao trade Co., Ltd is commercially available), water (1～2) by volume: (2～3): (2～3): (10～20) form.
Further, described refining agent is NP-9 (Nanjing Zhong Xu Chemical Co., Ltd. is commercially available).
Further, described baking is 150 ℃ of baking 1h.
The invention has the beneficial effects as follows:
The silver-plated shot copper post-treating method of prior art is to stir 30～50S in passivating solution expert work; between shot copper, may cannot contact with passivating solution because of overlapping inner side; causing product not entirely to be passivated liquid covers; because passivating solution effect is protection product; prevent with air in sulphur react (silver sulfide) and cause variable color (coffee color); so manually stir the product, there is variable color risk; as shown in Figure 1; prior art is processed after silver-plated shot copper; there is shade deviation (white mist) in surface; lack of homogeneity, jagged.
Present method is used new grinding method to make improvements the outward appearance of electrosilvering shot copper and quality, what adopt is mechanical uniform rotation, shot copper fully contacts with liquid medicine, naturally stop variable color risk, meet the operability in road and the assurance of quality after silver-plated shot copper, as shown in Figure 2, the inventive method is processed after silver-plated shot copper, surface color light, coating uniformity is good, without burr.
Accompanying drawing explanation
Fig. 1 utilizes the design sketch of prior art to silver-plated shot copper aftertreatment;
Fig. 2 utilizes the design sketch of the inventive method to silver-plated shot copper aftertreatment;
Embodiment
Below principle of the present invention and feature are described, example, only for explaining the present invention, is not intended to limit scope of the present invention.
Embodiment 1
Shot copper after power taking is silver-plated, three road washings, to in shredder with lapping liquid 300mL, water 10L, shot copper 40kg, at ambient temperature, 60 turn/min grind 15min, described lapping liquid by refining agent NP-9, tin abrasive (Wuxi City trade Co., Ltd is commercially available), Kang Li sheet (Wuxi City Li Qiao trade Co., Ltd is commercially available), water by volume 1:3:2:20 forms, three roads are washed, 90 ℃ of pure water are washed 3min, 150 ℃ of baking 1h.The present embodiment is processed after silver-plated shot copper, surface color light, and coating uniformity is good, without burr.
Embodiment 2
Shot copper after power taking is silver-plated, three road washings, to in shredder with lapping liquid 300mL, water 10L, shot copper 50kg, at ambient temperature, 60 turn/min grind 20min, described lapping liquid by refining agent NP-9, tin abrasive (Wuxi City trade Co., Ltd is commercially available), Kang Li sheet (Wuxi City Li Qiao trade Co., Ltd is commercially available), water by volume 2:3:2:15 forms, three roads are washed, 90 ℃ of pure water are washed 3min, 150 ℃ of baking 1h.The present embodiment is processed after silver-plated shot copper, surface color light, and coating uniformity is good, without burr.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (6)
1. the novel post-treating method of silver-plated shot copper, is characterized in that, comprising: the shot copper after power taking is silver-plated, and three road washings, grind, three road washings, 80～90 ℃ of pure water are washed 2～3min, 130～180 ℃ of baking 0.5～1.5h.
2. post-treating method according to claim 1, is characterized in that, described three road washings are washed for shot copper enters three washing baths successively.
3. post-treating method according to claim 1, is characterized in that, described in be ground to in shredder with lapping liquid 300mL, water 10L, shot copper 40～50kg, at ambient temperature, 60 turn/min grind 15～20min.
4. post-treating method according to claim 3, is characterized in that, described lapping liquid is by refining agent, tin abrasive, Kang Li sheet, water (1～2) by volume: (2～3): (2～3): (10～20) form.
5. post-treating method according to claim 3, is characterized in that, described refining agent is NP-9.
6. post-treating method according to claim 1, is characterized in that, described baking is 150 ℃ of baking 1h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410178289.6A CN103981552B (en) | 2014-04-29 | 2014-04-29 | Novel post-processing method for silver-plated copper particles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410178289.6A CN103981552B (en) | 2014-04-29 | 2014-04-29 | Novel post-processing method for silver-plated copper particles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103981552A true CN103981552A (en) | 2014-08-13 |
| CN103981552B CN103981552B (en) | 2017-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410178289.6A Active CN103981552B (en) | 2014-04-29 | 2014-04-29 | Novel post-processing method for silver-plated copper particles |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162095A (en) * | 2011-03-01 | 2011-08-24 | 济南德锡科技有限公司 | Anti-discoloring protective agent for silver plating and preparation method as well as application method thereof |
| CN101065457B (en) * | 2004-12-03 | 2011-08-24 | 安集微电子（上海）有限公司 | Chemical mechanical polishing method and polishing composition |
| CN102766871A (en) * | 2012-07-13 | 2012-11-07 | 东莞市东辉贸易有限公司 | Silver-plated antitarnish protectant composition |
| CN103382565A (en) * | 2013-07-18 | 2013-11-06 | 扬州虹扬科技发展有限公司 | Copper plating method and electroplating method of brass cast |
-
2014
- 2014-04-29 CN CN201410178289.6A patent/CN103981552B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101065457B (en) * | 2004-12-03 | 2011-08-24 | 安集微电子（上海）有限公司 | Chemical mechanical polishing method and polishing composition |
| CN102162095A (en) * | 2011-03-01 | 2011-08-24 | 济南德锡科技有限公司 | Anti-discoloring protective agent for silver plating and preparation method as well as application method thereof |
| CN102766871A (en) * | 2012-07-13 | 2012-11-07 | 东莞市东辉贸易有限公司 | Silver-plated antitarnish protectant composition |
| CN103382565A (en) * | 2013-07-18 | 2013-11-06 | 扬州虹扬科技发展有限公司 | Copper plating method and electroplating method of brass cast |
Non-Patent Citations (1)
| Title |
|---|
| 李贤成: "镀银防变色处理", 《材料保护》 * |
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| CN103981552B (en) | 2017-04-26 |
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