CN102560566A - Compound chromium plating additive - Google Patents
Compound chromium plating additive Download PDFInfo
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- CN102560566A CN102560566A CN2012100247128A CN201210024712A CN102560566A CN 102560566 A CN102560566 A CN 102560566A CN 2012100247128 A CN2012100247128 A CN 2012100247128A CN 201210024712 A CN201210024712 A CN 201210024712A CN 102560566 A CN102560566 A CN 102560566A
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- chromium plating
- standard chromium
- acid
- additive
- plating liquid
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Abstract
The invention discloses a compound chromium plating additive, comprising organic matter and inorganic matter, wherein the organic matter comprises 1-20 g of alkansulfonic acid and/or alkanoic disulfonic acid in 1L of a standard chromium plating liquid or 0.01-0.1 g of nitrogen-containing organic compound in 1L of the standard chromium plating liquid, the inorganic matter comprises 0.001-0.01 g of a light rare earth fluoride in1L of the standard chromium plating liquid and/or 0.01-0.1 g of one of VA family element oxide, hydroxide or sulfate/ According to the invention, the organic matter and the inorganic matter are added in the standard chromium plating liquid, thus the current efficiency is high , the coating has good brightness, the technology bright range is wide, the deep plating capability is good, the coating has high hardness, the anode has no corrosion, the technology is simple, and the cost is low.
Description
Technical field
The present invention relates to the chromium plating technical field, in particular a kind of compound additive for chrome-plating.
Background technology
In the chrome-plated process, first catalyzer is fluorion or silicofluoric acid etc., and current efficiency is high, the careful light of coating, but antianode and coating matrix all have corrosion, and impurities accumulation speed is fast in the solution like this, and difficult technique is with control, and the coating bath easy ageing is scrapped.Change with alkyl group sulfonic acid or its salt, be applicable on the chrome-plated process by the Politecnico in Milan the earliest, the coating light; Crystallization is careful, but corrosion anode and bright range are narrow, and degree of depth ability is not good enough; Hull Cell test piece 9cm especially uses sulfonated alkane, and the coating antiseptic power descends.Chinese patent CN89105414.6, the disclosed rare earth addition of CN87102034 all are the low-temperature and low-concentration chrome-plated process, but change in the standard electric plating bath, are difficult to control process parameters.
With halogens such as iodine is additive, and current efficiency improves, because the iodine releasing agent has activation to the coating matrix, but high Current Zone binding force of cladding material is poor, and the outward appearance dull gray is half light, and bright range is narrow.With carboxylic acid and iodine comprehensive utilization is additive, and coating is crisp, is prone to burst apart.
Summary of the invention
The deficiency that the present invention is directed to prior art provides a kind of compound additive for chrome-plating.
A kind of compound additive for chrome-plating comprises organism and inorganics, and said organism adopts: alkane chain sulfonic acid and/or alkane chain disulfonic acid, consumption are 1-20g/L standard chromium plating liquid; Or organic compounds containing nitrogen 0.01-0.1g/L;
Inorganics adopts: light-duty rare earth fluorine; Light-duty rare earth fluorine consumption is a 0.001-0.01g/L standard chromium plating liquid; And/or one of VA family element oxide, oxyhydroxide, vitriol, the consumption of VA family element oxide or oxyhydroxide or vitriol is a 0.01-0.1g/L standard chromium plating liquid.
Described additive, said organism is: methanesulfonic or ammonia alkyl sulfonic acid or dimethyl-sulfonic acid or thionamic acid or pyridine-sulfonic acid or formic acid.
Described additive, VA family element oxide or oxyhydroxide are: arsenic, tellurium, the oxide compound of bismuth or oxyhydroxide or vitriol
Described additive, light-duty rare earth fluorine is: the fluorochemical of lanthanum, cerium, praseodymium, neodymium,
Described additive contains the sulfuric acid of 150-400 grams per liter chromic anhydride and 1.5-4 grams per liter in the standard chromium plating plating bath, and working temperature 30-75 ℃, current density 15-100A/dm
2
Described additive contains the sulfuric acid of 250 grams per liter chromic anhydrides and 2.3-2.7 grams per liter in the standard chromium plating plating bath, and working temperature 50-70 ℃, current density 15-100A/dm
2
Described additive contains the sulfuric acid of 300 grams per liter chromic anhydrides and 3 grams per liters, working temperature 40-60 ℃ in the standard chromium plating plating bath.
Composite additive, organic alkane chain sulfonic acid and alkane chain disulfonic acid one or both, improve current efficiency, the coating depositing crystalline is careful, luminance brightness is good.Inorganic light-duty rare earth fluorine improves current efficiency, and the coating depositing crystalline is careful, and there is activation in the district to low current, and the matrix surface zone of oxidation is had activation, thereby improves covering power and degree of depth ability.Use VA family element oxide, suppress anodic corrosion, improve the polarization of electrode electric current, composite preceding two kinds, workpiece and anode surface can not cause corrosion and passivation.
Said organism and inorganics are added in the standard chromium plating solution, and not only current efficiency is high, and the coating luminance brightness is good, and the technology bright range is wide; Covering power is good, and coating hardness is high, and current efficiency is high, and anode does not have corrosion; The technology bright range is wide, and covering power is good, and operating procedure is simple, and cost is low.
Embodiment
Below in conjunction with specific embodiment, the present invention is elaborated.
Embodiment 1
Compound additive for chrome-plating comprises organism and inorganics, and said organism adopts: bismethane sulfonic acid, 5g/L standard chromium plating liquid; Thionamic acid, 1g/L standard chromium plating liquid;
Inorganics adopts: lanthanum fluoride, 0.06g/L standard chromium plating liquid; Arsenic oxide arsenoxide, 0.1g/L standard chromium plating liquid;
The sulfuric acid that contains 150 grams per liter chromic anhydrides and 1.5 grams per liters in the standard chromium plating plating bath, 30 ℃ of working temperatures, current density 15A/dm
2Current efficiency 25%, the coating light is careful, on the right angle experiment is complete.Coating hardness is high, Vickers' hardness 900HV.
Embodiment 2,
Compound additive for chrome-plating comprises organism and inorganics, and said organism adopts: two alkyl sulfonic acids, 4g/L standard chromium plating liquid; Glycocoll, 2g/L standard chromium plating liquid;
Inorganics adopts: cerium fluoride, 0.04g/L standard chromium plating liquid; Bismuth oxide, 0.05g/L standard chromium plating liquid; The sulfuric acid that contains 400 grams per liter chromic anhydrides and 4 grams per liters in the standard chromium plating plating bath, 75 ℃ of working temperatures, current density 50A/dm
2Current efficiency 29%, the coating light is careful, on the right angle experiment is complete.Coating hardness is high, Vickers' hardness 1380HV.
Should be understood that, concerning those of ordinary skills, can improve or conversion, and all these improvement and conversion all should belong to the protection domain of accompanying claims of the present invention according to above-mentioned explanation.
Claims (6)
1. a compound additive for chrome-plating is characterized in that, comprises organism and inorganics, and said organism adopts: alkane chain sulfonic acid and/or alkane chain disulfonic acid, consumption are 1-20g/L standard chromium plating liquid; Or organic compounds containing nitrogen 0.01-0.1g/L;
Inorganics adopts: light-duty rare earth fluorine; Light-duty rare earth fluorine consumption is a 0.001-0.01g/L standard chromium plating liquid; And/or one of VA family element oxide, oxyhydroxide, vitriol, the consumption of VA family element oxide or oxyhydroxide or vitriol is a 0.01-0.1g/l standard chromium plating liquid.
2. additive according to claim 1 is characterized in that, said organism is: formic acid or ammonia alkyl sulfonic acid or dimethyl-sulfonic acid or thionamic acid or pyridine-sulfonic acid or methanesulfonic.
3. additive according to claim 1 is characterized in that, VA family element oxide or oxyhydroxide are: arsenic, tellurium, the oxide compound of bismuth or oxyhydroxide or vitriol.
4. additive according to claim 1 is characterized in that, light-duty rare earth fluorine is: the fluorochemical of lanthanum, cerium, praseodymium, neodymium.
5. according to the arbitrary described additive of claim 1-4, it is characterized in that, contain the sulfuric acid of 150-400 grams per liter chromic anhydride and 1.5-4 grams per liter in the standard chromium plating plating bath, working temperature 30-75 ℃, current density 15-100A/dm
2
6. according to the arbitrary described additive of claim 1-4, it is characterized in that, contain the sulfuric acid of 250 grams per liter chromic anhydrides and 2.3-2.7 grams per liter in the standard chromium plating plating bath, working temperature 50-70 ℃, current density 15-100A/dm
2
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100247128A CN102560566A (en) | 2012-02-06 | 2012-02-06 | Compound chromium plating additive |
| CN201310046888.8A CN103215621B (en) | 2012-02-06 | 2013-02-06 | A kind of compound chromium plating additive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100247128A CN102560566A (en) | 2012-02-06 | 2012-02-06 | Compound chromium plating additive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102560566A true CN102560566A (en) | 2012-07-11 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100247128A Pending CN102560566A (en) | 2012-02-06 | 2012-02-06 | Compound chromium plating additive |
| CN201310046888.8A Active CN103215621B (en) | 2012-02-06 | 2013-02-06 | A kind of compound chromium plating additive |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201310046888.8A Active CN103215621B (en) | 2012-02-06 | 2013-02-06 | A kind of compound chromium plating additive |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102965696A (en) * | 2012-11-28 | 2013-03-13 | 郑州市大有制版有限公司 | Efficient gravure chromeplating additive |
| CN109537002A (en) * | 2018-12-07 | 2019-03-29 | 重庆立道新材料科技有限公司 | A kind of ultrahigh hardness additive for chrome-plating and its application |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4786378A (en) * | 1987-09-01 | 1988-11-22 | M&T Chemicals Inc. | Chromium electroplating baths having reduced weight loss of lead and lead alloy anodes |
| CN101967661A (en) * | 2010-10-26 | 2011-02-09 | 广东多正化工科技有限公司 | Trivalent chromium plating solution |
-
2012
- 2012-02-06 CN CN2012100247128A patent/CN102560566A/en active Pending
-
2013
- 2013-02-06 CN CN201310046888.8A patent/CN103215621B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102965696A (en) * | 2012-11-28 | 2013-03-13 | 郑州市大有制版有限公司 | Efficient gravure chromeplating additive |
| CN102965696B (en) * | 2012-11-28 | 2015-05-20 | 郑州市大有制版有限公司 | Efficient gravure chromeplating additive |
| CN109537002A (en) * | 2018-12-07 | 2019-03-29 | 重庆立道新材料科技有限公司 | A kind of ultrahigh hardness additive for chrome-plating and its application |
| CN109537002B (en) * | 2018-12-07 | 2020-10-27 | 重庆立道新材料科技有限公司 | Ultrahigh-hardness chromium plating additive and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103215621A (en) | 2013-07-24 |
| CN103215621B (en) | 2016-06-29 |
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Owner name: YAN RUIJING Free format text: FORMER OWNER: TAIYUAN TEYIDA TECHNOLOGY CO.,LTD. Effective date: 20130321 |
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Free format text: CORRECT: ADDRESS; FROM: 030024 TAIYUAN, SHAANXI PROVINCE TO: 032799 JIZHONG, SHANXI PROVINCE |
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Effective date of registration: 20130321 Address after: 032799, Yunlong Road, Heshun County, Shanxi Province, No. 10 Yunlong slope Applicant after: Yan Ruijing Address before: 030024, No. 6, Feng Nan Road, Yingze West Avenue, Wan Berlin District, Shanxi, Taiyuan Applicant before: Taiyuan Teyida Technology Co.,Ltd. |
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Application publication date: 20120711 |