CN103266321A - Preparation method of plastic-based copper-chromium double-layered environmental-friendly wear-resisting electronic hardware fitting - Google Patents
Preparation method of plastic-based copper-chromium double-layered environmental-friendly wear-resisting electronic hardware fitting Download PDFInfo
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- CN103266321A CN103266321A CN2013101990038A CN201310199003A CN103266321A CN 103266321 A CN103266321 A CN 103266321A CN 2013101990038 A CN2013101990038 A CN 2013101990038A CN 201310199003 A CN201310199003 A CN 201310199003A CN 103266321 A CN103266321 A CN 103266321A
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Abstract
The invention discloses a preparation method of plastic-based copper-chromium double-layered environmental-friendly wear-resisting electronic hardware fitting. The method comprises the following steps of: a, after chemical electroless plating copper on the workpiece surface of a base body, pre-plating copper in copper pyrophosphate plating liquor; b, plating acid copper in copper sulfate plating liquor; and c, after plating acid copper for the workpiece, electro-plating in hexavalent chromium plating liquor to obtain a chromium coating, wherein the hexavalent chromium plating liquor is aqueous liquor which contains 300-400g/L chromium trioxide, sulfuric acid and a catalyst, the weight ratio of chromic acid to sulfuric acid is (100-200):1, and the content of the catalyst is 1-10g/L of one or a mixture of silicate, cerium oxide rare earth and neodymium oxide rare earth. The plastic electronic hardware fitting does not contain nickel and meanwhile has higher wear resistance.
Description
Technical field
The invention belongs to electronics handware wear-proof technique field, relate in particular to the compound surface technology of copper-chromium metal level.
Background technology
All adopt plastics as base material at present a lot of electronic products, and compound multiple metal level improve its corrosion-resistant and wear resisting property on base material.Traditional mode is for adopting copper-nickel-chromium metal level, but the part human body is to nickel metal sensitivity, causes allergicly easily, therefore needs no nickelization.But preparation chromium metal level on the copper metal, technology is immature at present, and bonding force is poor between the two, and metal level grows dim easily.
Summary of the invention
Goal of the invention: at the problem and shortage of above-mentioned existing existence, the invention provides the preparation method of the copper-wear-resisting electronics Hardware fitting of chromium double-layer environment protection of plastic base, this electronics Hardware fitting has no nickelization, and has higher wear resistance.
Technical scheme: for achieving the above object, the present invention by the following technical solutions: the preparation method of a kind of copper of plastic base-wear-resisting electronics Hardware fitting of chromium double-layer environment protection may further comprise the steps:
A, described matrix workpiece surface enter and carry out pre-copper facing in the cupric pyrophosphate plating bath through behind the electroless copper plating;
B, enter and carry out acid coppering in the copper sulfate bath again;
C, workpiece enter and electroplate the acquisition chromium coating in the sexavalent chrome plating bath after peracid copper is electroplated;
Wherein, described sexavalent chrome plating bath is the aqueous solution, contain: the chromium trioxide of 300～400g/L, sulfuric acid and catalyzer, the ratio 100～200:1 of described chromic acid and the weight of sulfuric acid, described catalyst content is that 1～10g/L is a kind of or mixture in silicate, cerium oxide rare earth and the Neodymium trioxide rare earth.
Further improve, before described workpiece enters the sexavalent chrome plating, immerse the citric acid solution activation earlier.
Further, the copper coating total thickness is 3～8 microns; Described chromium coating thickness is 0.5～3 micron.
Further, described body material is ABS plastic.
Beneficial effect: compared with prior art, the present invention has the following advantages: plastic electronic Hardware fitting of the present invention nickel metal the time, does not have higher wear resistance.
Description of drawings
Fig. 1 is the structural representation of the copper-wear-resisting electronics Hardware fitting of chromium double-layer environment protection of plastic base of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the present invention, should understand these embodiment only is used for explanation the present invention and is not used in and limits the scope of the invention, after having read the present invention, those skilled in the art all fall within the application's claims institute restricted portion to the modification of the various equivalent form of values of the present invention.
As shown in Figure 1, the matrix 1 of the electronics five metals workpiece of ABS base material forms electroless nickel layer through pre-treatment at workpiece earlier, electroplating little electric current then in cupric pyrophosphate electroplates, obtain 0.1～0.5 micron burnt copper coating, in copper-bath, electroplated 5 minutes then, obtain the sour copper coating about 4 microns, the thickness of copper layer 2 is about 4.5 microns in this process.After the citric acid solution through 50g/L carries out acid-wash activation, enter the sexavalent chrome plating bath and electroplate.
Wherein the prescription of sexavalent chrome plating bath is as follows: the Calucium Silicate powder of the chromic anhydride of 350g/L, the sulfuric acid of 1.5g/L, 5g/L, the cerium oxide of 1g/L and the Neodymium trioxide of 1g/L, and under 40～50 amperes/square decimeter electric current, electroplate 30～180s, can obtain 0.5～2 micron chromium coating 3.The hardness that obtains the chromium coating of workpiece is 620HV; Under 1000g pressure, rub back and forth through 1000 times rubbers, workpiece surface is silvery white yet, and not seeing weares and teares exposes copper.
The preferred specific embodiment of described the present invention only is used for the explanation embodiments of the present invention by reference to the accompanying drawings above; rather than as the restriction to aforementioned goal of the invention and claims content and scope; any simple modification, equivalent variations and modification that every foundation technical spirit of the present invention is done above embodiment all still belong to the technology of the present invention and rights protection category.
Claims (4)
1. the preparation method of the copper of a plastic base-wear-resisting electronics Hardware fitting of chromium double-layer environment protection may further comprise the steps:
A, described matrix workpiece surface enter and carry out pre-copper facing in the cupric pyrophosphate plating bath through behind the electroless copper plating;
B, enter and carry out acid coppering in the copper sulfate bath again;
C, workpiece enter and electroplate the acquisition chromium coating in the sexavalent chrome plating bath after peracid copper is electroplated;
Wherein, described sexavalent chrome plating bath is the aqueous solution, contain: the chromium trioxide of 300～400g/L, sulfuric acid and catalyzer, the ratio 100～200:1 of described chromic acid and the weight of sulfuric acid, described catalyst content is that 1～10g/L is a kind of or mixture in silicate, cerium oxide rare earth and the Neodymium trioxide rare earth.
2. according to the preparation method of the copper-wear-resisting electronics Hardware fitting of chromium double-layer environment protection of the described plastic base of claim 1, it is characterized in that: described workpiece enters sexavalent chrome electroplate before, immerse the citric acid solution activation earlier.
3. according to the preparation method of the copper-wear-resisting electronics Hardware fitting of chromium double-layer environment protection of the described plastic base of claim 2, it is characterized in that: the copper coating total thickness is 3～8 microns; Described chromium coating thickness is 0.5～3 micron.
4. according to the preparation method of the copper-wear-resisting electronics Hardware fitting of chromium double-layer environment protection of the described plastic base of claim 2, it is characterized in that: described body material is ABS plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101990038A CN103266321A (en) | 2013-05-24 | 2013-05-24 | Preparation method of plastic-based copper-chromium double-layered environmental-friendly wear-resisting electronic hardware fitting |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013101990038A CN103266321A (en) | 2013-05-24 | 2013-05-24 | Preparation method of plastic-based copper-chromium double-layered environmental-friendly wear-resisting electronic hardware fitting |
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| CN103266321A true CN103266321A (en) | 2013-08-28 |
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| CN2013101990038A Pending CN103266321A (en) | 2013-05-24 | 2013-05-24 | Preparation method of plastic-based copper-chromium double-layered environmental-friendly wear-resisting electronic hardware fitting |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105386089A (en) * | 2015-12-25 | 2016-03-09 | 武汉迪赛环保新材料股份有限公司 | Trivalent chromium hard chromium electroplating solution and application of trivalent chromium hard chromium electroplating solution in hard chromium electroplating |
| CN109112581A (en) * | 2017-06-22 | 2019-01-01 | 江苏联动轴承股份有限公司 | A kind of Cr-plating Bath |
| CN110072404A (en) * | 2016-12-26 | 2019-07-30 | Ykk株式会社 | The zipper of plated aluminum or aluminum alloy or the component of button |
| CN114774999A (en) * | 2022-03-11 | 2022-07-22 | 鹤山市精工制版有限公司 | Chromium plating additive and preparation method and application thereof |
Citations (4)
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| US4411961A (en) * | 1981-09-28 | 1983-10-25 | Occidental Chemical Corporation | Composite electroplated article and process |
| US20020100694A1 (en) * | 2000-08-17 | 2002-08-01 | Morin Louis Charles | Electroplated aluminum parts and process of production |
| CN101235500A (en) * | 2007-02-02 | 2008-08-06 | 比亚迪股份有限公司 | Casing with coating and preparation method thereof |
| CN101555614A (en) * | 2008-04-11 | 2009-10-14 | 深圳富泰宏精密工业有限公司 | Plastic surface galvanizing method |
-
2013
- 2013-05-24 CN CN2013101990038A patent/CN103266321A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4411961A (en) * | 1981-09-28 | 1983-10-25 | Occidental Chemical Corporation | Composite electroplated article and process |
| US20020100694A1 (en) * | 2000-08-17 | 2002-08-01 | Morin Louis Charles | Electroplated aluminum parts and process of production |
| CN101235500A (en) * | 2007-02-02 | 2008-08-06 | 比亚迪股份有限公司 | Casing with coating and preparation method thereof |
| CN101555614A (en) * | 2008-04-11 | 2009-10-14 | 深圳富泰宏精密工业有限公司 | Plastic surface galvanizing method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105386089A (en) * | 2015-12-25 | 2016-03-09 | 武汉迪赛环保新材料股份有限公司 | Trivalent chromium hard chromium electroplating solution and application of trivalent chromium hard chromium electroplating solution in hard chromium electroplating |
| CN110072404A (en) * | 2016-12-26 | 2019-07-30 | Ykk株式会社 | The zipper of plated aluminum or aluminum alloy or the component of button |
| CN109112581A (en) * | 2017-06-22 | 2019-01-01 | 江苏联动轴承股份有限公司 | A kind of Cr-plating Bath |
| CN114774999A (en) * | 2022-03-11 | 2022-07-22 | 鹤山市精工制版有限公司 | Chromium plating additive and preparation method and application thereof |
| CN114774999B (en) * | 2022-03-11 | 2024-04-09 | 鹤山市精工制版有限公司 | Chromium plating additive and preparation method and application thereof |
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Application publication date: 20130828 |