CN114075682A - Process for chemically plating steel spring part - Google Patents
Process for chemically plating steel spring part Download PDFInfo
- Publication number
- CN114075682A CN114075682A CN202010847590.7A CN202010847590A CN114075682A CN 114075682 A CN114075682 A CN 114075682A CN 202010847590 A CN202010847590 A CN 202010847590A CN 114075682 A CN114075682 A CN 114075682A
- Authority
- CN
- China
- Prior art keywords
- plating
- chemical
- steel spring
- solution
- plating solution
- 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
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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
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/30—Electroplating: Baths therefor from solutions of tin
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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
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/56—Electroplating: Baths therefor from solutions of alloys
- C25D3/58—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of copper
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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
- C25D5/10—Electroplating with more than one layer of the same or of different metals
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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
- C25D7/00—Electroplating characterised by the article coated
Abstract
The steel spring workpiece is processed by a chemical plating process, no hydrogen is generated in each process, the plating layer is flexible and uniform, is an anode plating layer, has excellent corrosion resistance and protective performance, the temperature of the plating solution workpiece is room temperature, and hydrogen removal is not needed after chemical plating, so that the process is a processing process with high energy conservation, environmental protection and high quality.
Description
Description
The present invention belongs to the field of chemical plating technology.
The steel spring plating part is electroplated by zinc plating and tin plating. The galvanizing is adopted for the mounting and hanging during the electroplating of large steel spring workpieces and spring pieces, the galvanizing time is more than 1 hour under the current density specified by the process, and the longer the galvanizing time is, the more the hydrogen permeation amount is, so that the embrittlement degree of the spring and the spring piece is higher. And controlling the temperature of the electroplated workpiece to be 180-200 ℃ by using an automatic constant temperature electric furnace, keeping the temperature for 2 hours, and removing the hydrogen in the spring and the spring sheet. After hydrogen is removed, the embrittled spring workpiece recovers, the fatigue resistance of the spring part is affected, and the service life of the spring workpiece is reduced accordingly.
For small and micro springs, the conventional electroplating method is to mount the springs by wire mesh blues, copper is plated for 1 hour after pretreatment, and then tin is plated for 2 hours by using alkaline tin plating solution. The tin plating solution must be maintained at 70-85 ℃. Due to the fact that electric lines of force are not uniformly distributed, the thickness of each small spring coating is inconsistent, and the degree of hydrogen embrittlement is also inconsistent. After tinning, the steel is placed in a furnace2CrO7Sealing treatment in solution of 40-55 g/L at 90-95 deg.c for 15-25 min, blowing to dry, and dehydrogenating at 180-200 deg.c for 2 hr. The processing cost of the processing procedure is quite high, K2CrO7The air and water pollution is serious. And the time for plating copper and tinAs long as 3 hours, it is difficult to ensure a quality-modified after plating of each small spring after hydrogen removal.
In contrast, the steel spring workpiece adopts a chemical plating process, no hydrogen is generated in each process, the plating layer is flexible and uniform, is an anode plating layer (for the potential of the steel spring substrate), is corrosion-resistant, has excellent protective performance, has room temperature working temperature of the plating solution, does not need to remove hydrogen after chemical plating, and is a processing process with high energy conservation, environmental protection and high quality.
Chemical plating processing procedure and technological conditions of the steel spring.
The process comprises the following steps:
1. chemical degreasing is adopted for degreasing
2. Derusting by adopting HCl
3. Electroless plating of low tin bronze
4. Cold water cleaning
5. Chemical plating of thin tin
Plating solution formula and process conditions
Temperature: at room temperature
Treatment time: not more than one minute.
6. And (5) washing with cold water.
7. The electroless alloy plating may be one of the following plating solutions depending on the use environment.
A. An electroless zinc-based ternary alloy, solution B (zinc-plated alloy) in patent 201910260714 & 9.
B. An electroless titanium alloy plating process, a titanium alloy plating solution in patent 202010567535X.
C. An electroless manganese alloy plating process, manganese alloy plating solution in patent 201910421341 & 9.
D. A chemical aluminum alloy plating process, a medium aluminum alloy plating solution in patent 201910260654 & 0.
E. An electroless magnesium alloy plating process, a titanium alloy plating solution in patent 201910260655 & 5.
8. Cold water cleaning
9. And (5) drying.
Claims (2)
1. A technology for chemically plating steel spring part features that the low-Sn bronze is chemically plated as bottom layer and a thin Sn layer is chemically plated.
2. A process for electrolessly plating a steel spring member according to claim 1 wherein optionally an electrolessly plating alloy solution: such as chemical zinc alloy plating solution (B solution), chemical titanium alloy plating solution, chemical manganese alloy plating solution, chemical aluminum alloy plating solution, and chemical magnesium alloy plating solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010847590.7A CN114075682A (en) | 2020-08-13 | 2020-08-13 | Process for chemically plating steel spring part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010847590.7A CN114075682A (en) | 2020-08-13 | 2020-08-13 | Process for chemically plating steel spring part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114075682A true CN114075682A (en) | 2022-02-22 |
Family
ID=80282192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010847590.7A Pending CN114075682A (en) | 2020-08-13 | 2020-08-13 | Process for chemically plating steel spring part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114075682A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014098180A (en) * | 2012-11-14 | 2014-05-29 | Sumitomo Electric Ind Ltd | Plated steel wire |
| CN106191826A (en) * | 2016-08-16 | 2016-12-07 | 无锡益联机械有限公司 | A kind of steel bead wire chemical plating stannum bell metal technique |
| CN108914121A (en) * | 2018-08-13 | 2018-11-30 | 山东大业股份有限公司 | A kind of steel bead wire with multi-element layers and its coating plating method |
| CN208793815U (en) * | 2018-08-23 | 2019-04-26 | 浙江长峰新材料有限公司 | A kind of alloy pipe |
-
2020
- 2020-08-13 CN CN202010847590.7A patent/CN114075682A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014098180A (en) * | 2012-11-14 | 2014-05-29 | Sumitomo Electric Ind Ltd | Plated steel wire |
| CN106191826A (en) * | 2016-08-16 | 2016-12-07 | 无锡益联机械有限公司 | A kind of steel bead wire chemical plating stannum bell metal technique |
| CN108914121A (en) * | 2018-08-13 | 2018-11-30 | 山东大业股份有限公司 | A kind of steel bead wire with multi-element layers and its coating plating method |
| CN208793815U (en) * | 2018-08-23 | 2019-04-26 | 浙江长峰新材料有限公司 | A kind of alloy pipe |
Non-Patent Citations (2)
| Title |
|---|
| 张耀宸 等: "《机械加工工艺设计实用手册》", 31 December 1993, 航空工业出版社 * |
| 钱苗根: "《材料表面技术及其应用手册》", 30 November 1998, 机械工业出版社 * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20220222 |
|
| WD01 | Invention patent application deemed withdrawn after publication |