CN86103745A - The pickling solution of copper and copper alloy - Google Patents
The pickling solution of copper and copper alloy Download PDFInfo
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- CN86103745A CN86103745A CN 86103745 CN86103745A CN86103745A CN 86103745 A CN86103745 A CN 86103745A CN 86103745 CN86103745 CN 86103745 CN 86103745 A CN86103745 A CN 86103745A CN 86103745 A CN86103745 A CN 86103745A
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Abstract
The present invention is a kind of " pickling solution of copper and copper alloy "; Belong to the invention of metal finishing aspect solution composition; Be on the basis of tradition three sour pickle solutions, suitably improve vitriolic content, reduce about 1/2nd nitric acid, cancellation hydrochloric acid, organic brightening agent of additional 0.15-0.3% weight, the acid fog inhibitor of 0.001-0.002% weight is the tobacco absorption agent with the urea of 2-6% weight; Basically solved environmental pollution, under 10-40 degree, pickling can obtain glossy surface in 0.5 minute.Be fit to mechanize production in enormous quantities, repeatedly return and wash no excessive corrosion; Be mainly used in the bright dipped finish of copper and copper alloy part.
Description
This patent belongs to the invention of metal finishing aspect, wherein mainly is the invention of copper and copper alloy pickling solution composition.
The traditional method of copper and copper alloy products bright dipped finish is three sour pickle solutions, contain sulfuric acid, nitric acid and hydrochloric acid in the solution, the shortcoming of this pickle solution is on record, the one, be not suitable for mechanical work in enormous quantities, the 2nd, excessive corrosion easily takes place, the 3rd, produce a large amount of tobacco (NOx, extremely deleterious gas).Newer method is the solution that contains water-soluble polymers of Soviet Union's invention in 1973.Its composition is (weight %):
Sulfuric acid 26-40
Nitric acid 10-12
Hydrochloric acid 0.3-0.7
Divalent alkyl vitriol 0.15-0.2
Polyacrylamide 0.15-0.3
Water surplus
Copper and copper alloy products were handled 4-6 minute down in 35-50 ℃ in above-mentioned solution after degreasing.
The shortcoming of aforesaid method is that the pickling time is longer, and nitric acid content is higher and still have tobacco to produce.Excessive corrosion easily takes place.
The objective of the invention is tobacco is suppressed in process of production fully, environment is not produced pollution.Can be fit to mechanized operation quickly and safely, avoid excessive corrosion.
Characteristics of the present invention are to adopt less nitric acid, and auxilliaryly add a small amount of organic brightening agent, for example: gelatin, polyoxyethylene glycol or their mixture; The polynary amophoteric surface active of trace, for example: OP, peregal etc. as the tobacco absorption agent, have been realized its solution composition of nuisanceless operation following (weight %) with cheap urea as acid fog inhibitor substantially:
Sulfuric acid 30-65
Nitric acid 3-6.5
Organic brightening agent 0.15-0.3
Acid fog inhibitor 0.001-0.002
Urea 2-6
Water surplus
For example: the sheet brass that has oxide film carries out pickling (weight %) in following solution behind chemical degreasing
Sulfuric acid 51
Nitric acid 4
Gelatin 0.05
Polyoxyethylene glycol 0.05
Peregal 0.0015
Urea 4
Water surplus
Under 10-40 ℃, pickling promptly obtained glossy surface in 0.5 minute.Inferior surplus the pickling 10 repeatedly, product surface is light still, no excessive corrosion.
Advantage of the present invention is: solved environmental pollution, suction opeing nitrogen oxide maximum emission amount only has 3.4 milligrams/meter3, amount of nitrogen oxides is at 0.03-0.32 millimeter/rice in the production worker-house3 Be significantly less than discharging standards; Pickling speed is moderate, is fit to produce in enormous quantities and mechanized operation; The small variation of 1-3 μ only takes place in surface profile in the processing procedure, has reduced the consumption of metal material; Solution stable (consuming the solution except adding), long service life are produced continuously 100,000 square metres of workpiece and need do not changed solution; At ambient temperature pickling does not need heater, saves the energy.
Bright dipped finish liquid provided by the present invention not only can be applicable to copper and copper alloy goods but also can continue to use in the bright dipped finish of aluminium and aluminium alloy.
Claims (4)
1, the pickling solution of a kind of copper and copper alloy is made up of sulfuric acid, nitric acid, water, it is characterized in that adding a small amount of organic brightening agent as polyoxyethylene glycol, gelatin or their mixture.Polynary amphoterics is as acid fog inhibitor such as op, peregal; Cheap urea is as the tobacco absorption agent.
2, according to claim 1, the composition of this solution is (weight %)
Sulfuric acid 30-65
Nitric acid 3-6.5
Organic brightening agent 0.15-0.3
Acid fog inhibitor 0.001-0.002
Urea 2-6
Water surplus
3, according to claim 1 and 2, the working temperature of this solution is at 10-40 ℃
4, according to claim 1,2,3, this solution also can be continued to use in aluminium and Al-alloy products.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86103745 CN86103745A (en) | 1986-05-26 | 1986-05-26 | The pickling solution of copper and copper alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86103745 CN86103745A (en) | 1986-05-26 | 1986-05-26 | The pickling solution of copper and copper alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86103745A true CN86103745A (en) | 1987-12-02 |
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ID=4802176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86103745 Pending CN86103745A (en) | 1986-05-26 | 1986-05-26 | The pickling solution of copper and copper alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86103745A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102896119A (en) * | 2012-04-10 | 2013-01-30 | 中冶陕压重工设备有限公司 | Method for removing oxide blockage in plasma cutter gun head |
| CN104047006A (en) * | 2014-06-23 | 2014-09-17 | 梧州恒声电子科技有限公司 | Method for removing oxide film from surface of copper |
| CN104047040A (en) * | 2014-06-23 | 2014-09-17 | 梧州恒声电子科技有限公司 | Electroplating activating agent and preparation method thereof |
| CN104152927A (en) * | 2014-08-01 | 2014-11-19 | 北京新立机械有限责任公司 | Novel pickling solution for pretreating surfaces of aluminum and aluminum alloy |
| CN104313587A (en) * | 2014-10-31 | 2015-01-28 | 抚顺东工冶金材料技术有限公司 | Formula of surface passivation brightener for aluminum alloy welding wire and using technology thereof |
| CN105350005A (en) * | 2014-08-20 | 2016-02-24 | 中国石油化工股份有限公司 | Compound acid washing liquid containing passivation agent, and preparation method thereof |
| CN110079854A (en) * | 2019-04-14 | 2019-08-02 | 广州恒荣电子科技有限公司 | A kind of environment-friendly type nitric acid fog inhibitor |
| CN113088982A (en) * | 2021-04-01 | 2021-07-09 | 江西中晟金属有限公司 | Production method of glossy copper rod |
-
1986
- 1986-05-26 CN CN 86103745 patent/CN86103745A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102896119A (en) * | 2012-04-10 | 2013-01-30 | 中冶陕压重工设备有限公司 | Method for removing oxide blockage in plasma cutter gun head |
| CN102896119B (en) * | 2012-04-10 | 2015-04-29 | 中冶陕压重工设备有限公司 | Method for removing oxide blockage in plasma cutter gun head |
| CN104047006A (en) * | 2014-06-23 | 2014-09-17 | 梧州恒声电子科技有限公司 | Method for removing oxide film from surface of copper |
| CN104047040A (en) * | 2014-06-23 | 2014-09-17 | 梧州恒声电子科技有限公司 | Electroplating activating agent and preparation method thereof |
| CN104152927A (en) * | 2014-08-01 | 2014-11-19 | 北京新立机械有限责任公司 | Novel pickling solution for pretreating surfaces of aluminum and aluminum alloy |
| CN105350005A (en) * | 2014-08-20 | 2016-02-24 | 中国石油化工股份有限公司 | Compound acid washing liquid containing passivation agent, and preparation method thereof |
| CN105350005B (en) * | 2014-08-20 | 2018-04-03 | 中国石油化工股份有限公司 | A kind of compounding pickle containing passivator and preparation method thereof |
| CN104313587A (en) * | 2014-10-31 | 2015-01-28 | 抚顺东工冶金材料技术有限公司 | Formula of surface passivation brightener for aluminum alloy welding wire and using technology thereof |
| CN110079854A (en) * | 2019-04-14 | 2019-08-02 | 广州恒荣电子科技有限公司 | A kind of environment-friendly type nitric acid fog inhibitor |
| CN113088982A (en) * | 2021-04-01 | 2021-07-09 | 江西中晟金属有限公司 | Production method of glossy copper rod |
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