CN104674315A - Copper surface treatment process - Google Patents
Copper surface treatment process Download PDFInfo
- Publication number
- CN104674315A CN104674315A CN201410823264.7A CN201410823264A CN104674315A CN 104674315 A CN104674315 A CN 104674315A CN 201410823264 A CN201410823264 A CN 201410823264A CN 104674315 A CN104674315 A CN 104674315A
- Authority
- CN
- China
- Prior art keywords
- workpiece
- copper
- treatment process
- carried out
- workpiece surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/48—After-treatment of electroplated surfaces
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/48—After-treatment of electroplated surfaces
- C25D5/50—After-treatment of electroplated surfaces by heat-treatment
Abstract
The invention discloses a copper surface treatment process. The copper surface treatment process comprises the following steps: (1) washing the surface of the workpiece in a mechanical washing and chemical washing mode; (2) performing sand blasting on the workpiece; (3) washing the surface of the workpiece to remove the impurities on the surface of the workpiece; (4) electroplating an aluminum film on the surface of the workpiece; (5) performing shot blasting on the electroplated workpiece; (6) spraying a sealing agent on the surface of the workpiece; (7) heating and diffusing the workpiece in a thermal treatment furnace. The copper surface treatment process has the beneficial effects of simple treatment process, convenient operation and low real production cost. The workpiece is high in surface hardness, strong in abrasive resistance and corrosion resistance and is easy to popularize.
Description
Technical field
The present invention relates to a kind of copper process of surface treatment.
Background technology
Copper and its alloy human history uses one of metallic substance the earliest.Copper alloy has high electroconductibility, thermal conductivity, erosion resistance and excellent plasticity, is widely used in electric power, electrician, mine, metallurgy and machinery manufacturing industry.But the hot wear resisting property of copper alloy surface is poor, usually need in engineer applied to carry out surface-coated or modification.
Copper belongs to semi-precious metal, compared with equilibrium hydrogen electrode, has the current potential of calibration, but compares with oxygen electrode current potential, more negative again.So negative electrode oxygen uptake corrosion may be carried out in most conditions, and hydrogen can not be separated out from acid.When in acid, alkali, anaerobic agent exists, copper is more anti-corrosion; When containing oxygenant, copper corrodes.
Copper corrosion is divided into chemical corrosion, galvanic corrosion and physics corrosion by process.Chemical corrosion is the destruction that copper surface and surrounding medium directly electrochemical action occur and cause.In corrosion process, the transmission of electronics is directly carried out between copper and oxygenant.Galvanic corrosion is copper surface and the dielectric medium generation electrochemical reaction of ionic conductance and the destruction that produces, and be also the most general, the modal corrosion of one, be also a more serious class corrosion simultaneously.The corrosion overwhelming majority of copper in air, seawater, soil, acid, alkali, salt medium is galvanic corrosion.Galvanic corrosion can with machinery, mechanics, biological destruction acting in conjunction, the loss of aggravation metallic copper.Physics corrosion refers to the destruction of copper caused by simple physical action, and this kind of corrosion proportion is less.
Fine copper has very high thermal conductivity, electroconductibility and corrosion stability, is used widely in metallurgical industry and petrochemical industry.Crystallizer in such as, air port in use fine copper manufacture iron-smelting blast furnace, cinder notch, cooling stave, Oxygen Lance Nozzle for Converter, steel billet thermal cutting burning torch burner, steelmaking continuous casting machines and some chemical device elements etc.The Working environment one side of these parts directly contacts with high-temp liquid or gaseous media, and another side contacts with the heat-eliminating medium such as water or gas.But the high temperature oxidation resistance of fine copper is poor, hardness is low, not wear-resisting.The air port made of fine copper, cinder notch and crystallizer etc. high temperature liquid iron, the washing away of molten steel, wear and tear under be easy to disabling damage.The life problems of metallurgy industry heat transfer brass work is a global difficult problem, and countries in the world all solve in effort.Be considered to the good technology of effect at present and mostly be surface reinforcing method, comprising: alloy plating, alloying and built-up welding refractory alloy, also have thermospray heat insulating coat in addition and inlay the processing methodes such as ceramics.Traditional treatment process effect is bad, and process needs higher cost, and its performance of the workpiece handled well can not reach requirement, and the technology being therefore badly in need of a kind of improvement solves above-mentioned technological deficiency.
Summary of the invention
The invention provides a kind of copper process of surface treatment.
The present invention is directed to the technical scheme that above-mentioned technological deficiency proposes is:
A kind of copper process of surface treatment, comprises the following steps:
(1) mode of mechanical cleaning and matting is adopted to carry out clean to workpiece surface;
(2) sandblasting is carried out to workpiece;
(3) cleaning workpiece surface, the impurity of removing workpiece surface;
(4) at workpiece surface Electroplating Aluminum film;
(5) shot peening is carried out to the workpiece electroplated;
(6) workpiece surface spraying hole sealing agent;
(7) workpiece is carried out in heat treatment furnace add thermodiffusion.
Workpiece surface aluminium plating film thickness is 0.5-0.8 mm.
DIFFUSION TREATMENT is carried out in the thermal treatment of atmospheric environment, Heating temperature 720-830 DEG C, and temperature keeps 4-5 hour, naturally cooling.
The invention has the beneficial effects as follows: technological process is simple, and easy to operate, real cost of production is less, its surface hardness of workpiece using the present invention to make is high, and wear resistance is strong, and erosion resistance is strong, is easy to promote.
Embodiment
A kind of copper process of surface treatment, comprises the following steps: (1) adopts the mode of mechanical cleaning and matting to carry out clean to workpiece surface; (2) sandblasting is carried out to workpiece; (3) cleaning workpiece surface, the impurity of removing workpiece surface; (4) at workpiece surface Electroplating Aluminum film; (5) shot peening is carried out to the workpiece electroplated; (6) workpiece surface spraying hole sealing agent; (7) workpiece is carried out in heat treatment furnace add thermodiffusion.Workpiece surface aluminium plating film thickness is 0.8mm, DIFFUSION TREATMENT is carried out in the thermal treatment of atmospheric environment, Heating temperature 780 DEG C, and temperature keeps 4.2 hours, naturally cooling, technological process is simple, and easy to operate, real cost of production is less, its surface hardness of workpiece using the present invention to make is high, wear resistance is strong, and erosion resistance is strong, is easy to promote.
Claims (3)
1. a copper process of surface treatment, is characterized in that: comprise the following steps:
(1) mode of mechanical cleaning and matting is adopted to carry out clean to workpiece surface;
(2) sandblasting is carried out to workpiece;
(3) cleaning workpiece surface, the impurity of removing workpiece surface;
(4) at workpiece surface Electroplating Aluminum film;
(5) shot peening is carried out to the workpiece electroplated;
(6) workpiece surface spraying hole sealing agent;
(7) workpiece is carried out in heat treatment furnace add thermodiffusion.
2. a kind of copper process of surface treatment according to claim 1, is characterized in that: workpiece surface aluminium plating film thickness is 0.5-0.8mm.
3. a kind of copper process of surface treatment according to claim 1, is characterized in that: DIFFUSION TREATMENT is carried out in the thermal treatment of atmospheric environment, Heating temperature 720-830 DEG C, and temperature keeps 4-5 hour, naturally cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410823264.7A CN104674315A (en) | 2014-12-26 | 2014-12-26 | Copper surface treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410823264.7A CN104674315A (en) | 2014-12-26 | 2014-12-26 | Copper surface treatment process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104674315A true CN104674315A (en) | 2015-06-03 |
Family
ID=53309877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410823264.7A Pending CN104674315A (en) | 2014-12-26 | 2014-12-26 | Copper surface treatment process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104674315A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105690272A (en) * | 2015-09-30 | 2016-06-22 | 安徽中盛罐业有限公司 | Surface treatment technology for tinplate can |
-
2014
- 2014-12-26 CN CN201410823264.7A patent/CN104674315A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105690272A (en) * | 2015-09-30 | 2016-06-22 | 安徽中盛罐业有限公司 | Surface treatment technology for tinplate can |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150603 |