CN110592597A - Surface treatment process for cupronickel casting - Google Patents
Surface treatment process for cupronickel casting Download PDFInfo
- Publication number
- CN110592597A CN110592597A CN201910842326.1A CN201910842326A CN110592597A CN 110592597 A CN110592597 A CN 110592597A CN 201910842326 A CN201910842326 A CN 201910842326A CN 110592597 A CN110592597 A CN 110592597A
- Authority
- CN
- China
- Prior art keywords
- casting
- surface treatment
- cupronickel
- pickling
- washing
- 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.)
- Pending
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
- B24B29/02—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/10—Other heavy metals
- C23G1/103—Other heavy metals copper or alloys of copper
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/56—Electroplating: Baths therefor from solutions of alloys
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- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Electroplating Methods And Accessories (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention discloses a surface treatment process of a cupronickel casting, wherein the cupronickel casting to be treated can be subjected to surface treatment only by S1. shot blasting, S2. washing, S3. acid washing, S4. polishing, S5. electroplating and S6. secondary washing. According to the surface treatment process for the cupronickel casting, disclosed by the invention, the surface treatment of the cupronickel casting can be completed through simple procedures, the strength, the hardness, the wear resistance and the corrosion resistance of the treated casting are improved to a certain extent, the cost is reduced, and the surface treatment process has good economic benefits and practical values.
Description
Technical Field
The invention relates to the field of metal surface treatment, in particular to a surface treatment process for a cupronickel casting.
Background
The surface treatment is a process method for adding or subtracting on the surface of a base material to change the physical and chemical properties of the base material. The purpose of the surface treatment is to meet the requirements of corrosion resistance, wear resistance, decoration or other special functions of the product. The existing surface treatment process for the white copper castings is complex, unified specifications and standards do not exist, the quality of the treated castings is uneven, and the production efficiency is reduced due to excessive repeated procedures, so that the labor burden of workers is increased, and the cost is increased.
Disclosure of Invention
In view of the problems in the prior art, the present invention aims to provide a surface treatment process for a cupronickel casting, which can be used for simply and conveniently performing surface treatment on the cupronickel casting, so that the casting has stable and high quality, and the physical and chemical properties of the casting are improved.
In order to achieve the purpose, the invention adopts the technical scheme that: the surface treatment process of the cupronickel casting is characterized by comprising the following steps of:
s1, shot blasting: performing shot blasting on the white copper casting by using a crawler shot blasting machine, wherein the used raw material is steel shots with the grain diameter of 0.35-0.50 mm;
s2, washing: flushing the cast after shot blasting, wherein the flushing liquid is a mixed solution containing 3.5% of hydrogen peroxide and 3% of ethanol;
s3, acid washing: placing the casting subjected to hydrochloric acid pickling into a pickling tank, and pickling by using a mixed solution containing 10% of sulfuric acid, 8% of ethanol and 6% of hydrogen peroxide for 3 minutes;
s4, polishing: polishing the pickled casting by using a polishing machine and abrasive paper;
s5, electroplating, namely electroplating the polished casting, wherein the used coating is a copper-nickel-chromium composite coating;
s6, secondary washing: and (4) washing the electroplated casting by using clear water to finish the surface treatment of the cupronickel casting.
Further, in the pickling step of S3, a corrosion inhibitor is added to prevent the casting from being excessively oxidized by the pickling solution, and the corrosion inhibitor is a composite agent containing 1% of sodium sulfite and 2% of calcium silicate.
According to the surface treatment process for the cupronickel casting, disclosed by the invention, the surface treatment of the cupronickel casting can be completed through simple procedures, the strength, the hardness, the wear resistance and the corrosion resistance of the treated casting are improved to a certain extent, the cost is reduced, and the surface treatment process has good economic benefits and practical values.
Detailed Description
The present invention will be described in further detail with reference to examples.
Example 1
The surface treatment process of the cupronickel casting is characterized by comprising the following steps of:
s1, shot blasting: performing shot blasting on the white copper casting by using a crawler shot blasting machine, wherein the used raw material is steel shot with the grain diameter of 0.45 mm;
s2, washing: flushing the cast after shot blasting, wherein the flushing liquid is a mixed solution containing 3.5% of hydrogen peroxide and 3% of ethanol;
s3, acid washing: placing the casting subjected to hydrochloric acid pickling into a pickling tank, and pickling by using a mixed solution containing 10% of sulfuric acid, 8% of ethanol and 6% of hydrogen peroxide for 3 minutes;
s4, polishing: polishing the pickled casting by using a polishing machine and abrasive paper;
s5, electroplating, namely electroplating the polished casting, wherein the used coating is a copper-nickel-chromium composite coating;
s6, secondary washing: and (4) washing the electroplated casting by using clear water to finish the surface treatment of the cupronickel casting.
Further, in the pickling step of S3, a corrosion inhibitor is added to prevent the casting from being excessively oxidized by the pickling solution, and the corrosion inhibitor is a composite agent containing 1% of sodium sulfite and 2% of calcium silicate.
The cupronickel casting subjected to surface treatment in the step has the advantages that the strength, the hardness, the wear resistance and the corrosion resistance are improved to a certain degree, the cost is reduced, and the cupronickel casting is suitable for large-scale application.
Claims (2)
1. The surface treatment process of the cupronickel casting is characterized by comprising the following steps of:
s1, shot blasting: performing shot blasting on the white copper casting by using a crawler shot blasting machine, wherein the used raw material is steel shots with the grain diameter of 0.35-0.50 mm;
s2, washing: flushing the cast after shot blasting, wherein the flushing liquid is a mixed solution containing 3.5% of hydrogen peroxide and 3% of ethanol;
s3, acid washing: placing the casting subjected to hydrochloric acid pickling into a pickling tank, and pickling by using a mixed solution containing 10% of sulfuric acid, 8% of ethanol and 6% of hydrogen peroxide for 3 minutes;
s4, polishing: polishing the pickled casting by using a polishing machine and abrasive paper;
s5, electroplating, namely electroplating the polished casting, wherein the used coating is a copper-nickel-chromium composite coating;
s6, secondary washing: and (4) washing the electroplated casting by using clear water to finish the surface treatment of the cupronickel casting.
2. The process of claim 1, wherein in the step of pickling in S3, a corrosion inhibitor is added to prevent the castings from being excessively oxidized by the pickling solution, and the corrosion inhibitor is a compound agent containing 1% sodium sulfite and 2% calcium silicate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910842326.1A CN110592597A (en) | 2019-09-06 | 2019-09-06 | Surface treatment process for cupronickel casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910842326.1A CN110592597A (en) | 2019-09-06 | 2019-09-06 | Surface treatment process for cupronickel casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110592597A true CN110592597A (en) | 2019-12-20 |
Family
ID=68858001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910842326.1A Pending CN110592597A (en) | 2019-09-06 | 2019-09-06 | Surface treatment process for cupronickel casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110592597A (en) |
-
2019
- 2019-09-06 CN CN201910842326.1A patent/CN110592597A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191220 |