CN110760901A - Surface treatment process for marine rudder stock - Google Patents
Surface treatment process for marine rudder stock Download PDFInfo
- Publication number
- CN110760901A CN110760901A CN201911301975.7A CN201911301975A CN110760901A CN 110760901 A CN110760901 A CN 110760901A CN 201911301975 A CN201911301975 A CN 201911301975A CN 110760901 A CN110760901 A CN 110760901A
- Authority
- CN
- China
- Prior art keywords
- rudder stock
- acid
- electroplating
- surface treatment
- treatment process
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000004381 surface treatment Methods 0.000 title claims abstract description 20
- 238000009713 electroplating Methods 0.000 claims abstract description 40
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000005498 polishing Methods 0.000 claims abstract description 30
- 238000007747 plating Methods 0.000 claims abstract description 25
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 24
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 20
- 239000011651 chromium Substances 0.000 claims abstract description 20
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 claims abstract description 18
- 238000004140 cleaning Methods 0.000 claims abstract description 18
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000005496 tempering Methods 0.000 claims abstract description 14
- 235000006408 oxalic acid Nutrition 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000002253 acid Substances 0.000 claims abstract description 6
- 238000005238 degreasing Methods 0.000 claims abstract description 6
- 239000008367 deionised water Substances 0.000 claims abstract description 6
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 6
- 238000007689 inspection Methods 0.000 claims abstract description 6
- 238000004806 packaging method and process Methods 0.000 claims abstract description 6
- 239000003792 electrolyte Substances 0.000 claims description 15
- WGLPBDUCMAPZCE-UHFFFAOYSA-N chromium trioxide Inorganic materials O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 5
- 238000005260 corrosion Methods 0.000 abstract description 7
- 230000007797 corrosion Effects 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
Classifications
-
- 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
- C25D3/04—Electroplating: Baths therefor from solutions of chromium
- C25D3/08—Deposition of black chromium, e.g. hexavalent chromium, CrVI
-
- 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
- C25D3/04—Electroplating: Baths therefor from solutions of chromium
- C25D3/10—Electroplating: Baths therefor from solutions of chromium characterised by the organic bath constituents used
-
- 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
- C25D7/00—Electroplating characterised by the article coated
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
The invention discloses a surface treatment process of a marine rudder stock, which comprises the following steps: degreasing → acid cleaning → clamping and positioning → cleaning → electroplating and chromium plating → secondary cleaning → clamp unloading → tempering → polishing → inspection → packaging and warehousing; the current during electroplating chromium plating is 24-30A, the electroplating time is 25-30min, the electroplating solution is composed of chromic acid, sulfuric acid, oxalic acid and deionized water, the concentration of the chromic acid in the electroplating solution is 105-115g/L, and the mass ratio of the chromic acid to the sulfuric acid to the oxalic acid is 100:1: 0.5. Through the mode, the marine rudder stock has the advantages that the abrasion resistance and the corrosion resistance of the marine rudder stock can be improved, the service life of the marine rudder stock is greatly prolonged, the overhaul and maintenance costs of the marine rudder stock are reduced, and the safety is improved.
Description
Technical Field
The invention relates to the field of machine manufacturing, in particular to a surface treatment process of a marine rudder stock.
Background
The rudder stock is a shaft for rotating the rudder blade and is used for bearing and transmitting force acting on the rudder blade and force given to the rudder steering device by the rudder, namely the rudder blade is rotated by the rudder stock, and the rudder blade bears reaction force of water to the rudder blade so as to steer the ship. The rudder stock belongs to a key part in the ship, and once failure occurs in the working process, the consequence is not supposed to be.
The rudder stock is easy to deform and corrode after being soaked in seawater for a long time and belongs to a wearing part, so that the rudder stock needs to be checked, maintained and repaired regularly, but the maintenance and the repair of the rudder stock are time-consuming and labor-consuming and difficult to meet the requirement of a ship stage.
Disclosure of Invention
The invention mainly solves the technical problems that: aiming at the defects of the prior art, the surface treatment process for the marine rudder stock is provided, so that the abrasion resistance and the corrosion resistance of the marine rudder stock can be improved, the service life of the marine rudder stock is greatly prolonged, the overhaul and maintenance costs of the marine rudder stock are reduced, and the safety is improved.
In order to solve the technical problems, the invention adopts a technical scheme that: the surface treatment process of the marine rudder stock comprises the following steps: degreasing → acid cleaning → clamping and positioning → cleaning → electroplating and chromium plating → secondary cleaning → clamp unloading → tempering → polishing → inspection → packaging and warehousing; wherein the current during electroplating chromium plating is 24A-30A, the electroplating time is 25-30min, the electroplating solution consists of chromic acid, sulfuric acid, oxalic acid and deionized water, the concentration of the chromic acid in the electroplating solution is 105-115g/L, and the mass ratio of the chromic acid to the sulfuric acid to the oxalic acid is (95-105) to 1: 0.5.
In a preferred embodiment of the invention, the thickness of the chromium plating is 8-12 μm.
In a preferred embodiment of the present invention, the temperature of the plating solution is 43 to 47 ℃.
In a preferred embodiment of the invention, the temperature during the tempering treatment is 660-680 ℃ and the time is 55-60 min.
In a preferred embodiment of the invention, the polishing is electropolishing.
In a preferred embodiment of the present invention, the electrolyte during the electrolytic polishing is a phosphoric acid-chromic anhydride electrolyte.
In a preferred embodiment of the present invention, the current density during the electrolytic polishing is 0.8A/cm2。
In a preferred embodiment of the present invention, the temperature of the electrolyte during the electrolytic polishing is 53 ℃ to 57 ℃.
The invention has the beneficial effects that: by optimizing the surface treatment process and adopting the electroplating chromium plating process, the current and the electroplating time during electroplating chromium plating are controlled, the proportion of electroplating liquid is optimized, the wear resistance and the corrosion resistance of the marine rudder stock are improved, the service life of the marine rudder stock is greatly prolonged, the overhaul and maintenance costs of the marine rudder stock are reduced, and the safety is improved.
Detailed Description
The following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to more readily understand the advantages and features of the present invention, and to clearly and unequivocally define the scope of the present invention.
The embodiment of the invention comprises the following steps:
example one
A surface treatment process of a marine rudder stock comprises the following steps: degreasing → acid cleaning → clamping and positioning → cleaning → electroplating and chromium plating → secondary cleaning → clamp unloading → tempering → polishing → inspection → packaging and warehousing; the current during electroplating chromium plating is 24A, the electroplating time is 30min, the electroplating solution is composed of chromic acid, sulfuric acid, oxalic acid and deionized water, the concentration of chromic acid in the electroplating solution is 105g/L, and the mass ratio of chromic acid to sulfuric acid to oxalic acid is 95:1: 0.5.
The chromium plating has the thickness of 8-12 μm, preferably 10 μm, and has wear resistance.
The temperature of the electroplating solution is 43-47 ℃, preferably 45 ℃, so that the electroplating efficiency can be improved.
The temperature during tempering is 660 ℃, the time is 60min, and the tempering furnace is used for eliminating internal stress and improving strength.
The polishing is electrolytic polishing. The electrolyte during electrolytic polishing is phosphoric acid-chromic anhydride electrolyte. The current density during electrolytic polishing is 0.8A/cm2. The temperature of the electrolyte during electrolytic polishing is 53-57 ℃, and is preferably 55 ℃. The surface smoothness can be improved, and the corrosion resistance is improved.
Example two
A surface treatment process of a marine rudder stock comprises the following steps: degreasing → acid cleaning → clamping and positioning → cleaning → electroplating and chromium plating → secondary cleaning → clamp unloading → tempering → polishing → inspection → packaging and warehousing; the current during electroplating chromium plating is 30A, the electroplating time is 25min, the electroplating solution is composed of chromic acid, sulfuric acid, oxalic acid and deionized water, the concentration of chromic acid in the electroplating solution is 115g/L, and the mass ratio of chromic acid to sulfuric acid to oxalic acid is 105:1: 0.5.
The chromium plating has the thickness of 8-12 μm, preferably 10 μm, and has wear resistance.
The temperature of the electroplating solution is 43-47 ℃, preferably 45 ℃, so that the electroplating efficiency can be improved.
The temperature during the tempering treatment is 680 ℃, the time is 55min, and the tempering treatment is used for eliminating internal stress and improving the strength.
The polishing is electrolytic polishing. The electrolyte during electrolytic polishing is phosphoric acid-chromic anhydride electrolyte. The current density during electrolytic polishing is 0.8A/cm2. The temperature of the electrolyte during electrolytic polishing is 53-57 ℃, and is preferably 55 ℃. The surface smoothness can be improved, and the corrosion resistance is improved.
EXAMPLE III
A surface treatment process of a marine rudder stock comprises the following steps: degreasing → acid cleaning → clamping and positioning → cleaning → electroplating and chromium plating → secondary cleaning → clamp unloading → tempering → polishing → inspection → packaging and warehousing; the current during electroplating chromium plating is 27A, the electroplating time is 28min, the electroplating solution is composed of chromic acid, sulfuric acid, oxalic acid and deionized water, the concentration of chromic acid in the electroplating solution is 110g/L, and the mass ratio of chromic acid to sulfuric acid to oxalic acid is 100:1: 0.5.
The chromium plating has the thickness of 8-12 μm, preferably 10 μm, and has wear resistance.
The temperature of the electroplating solution is 43-47 ℃, preferably 45 ℃, so that the electroplating efficiency can be improved.
The temperature during tempering is 670 ℃, the time is 58min, and the tempering furnace is used for eliminating internal stress and improving strength.
The polishing is electrolytic polishing. The electrolyte during electrolytic polishing is phosphoric acid-chromic anhydride electrolyte. The current density during electrolytic polishing is 0.8A/cm2. The temperature of the electrolyte during electrolytic polishing is 53-57 ℃, and is preferably 55 ℃. The surface smoothness can be improved, and the corrosion resistance is improved.
The invention discloses a surface treatment process of a marine rudder stock, which is characterized in that the surface treatment process is optimized, the chromium plating process is adopted, the current and the plating time during the chromium plating are controlled, the proportion of plating solution is optimized, the wear resistance and the corrosion resistance of the marine rudder stock are improved, the service life of the marine rudder stock is greatly prolonged, the overhaul and maintenance costs of the marine rudder stock are reduced, and the safety is improved.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A surface treatment process of a marine rudder stock is characterized by comprising the following steps: degreasing → acid cleaning → clamping and positioning → cleaning → electroplating and chromium plating → secondary cleaning → clamp unloading → tempering → polishing → inspection → packaging and warehousing; wherein the current during electroplating chromium plating is 24A-30A, the electroplating time is 25-30min, the electroplating solution consists of chromic acid, sulfuric acid, oxalic acid and deionized water, the concentration of the chromic acid in the electroplating solution is 105-115g/L, and the mass ratio of the chromic acid to the sulfuric acid to the oxalic acid is (95-105) to 1: 0.5.
2. The surface treatment process of a rudder stock for ships according to claim 1, wherein the thickness of the chrome plating is 8 to 12 μm.
3. The surface treatment process for a rudder stock for ships according to claim 1, wherein the temperature of the plating solution is 43 to 47 ℃.
4. The surface treatment process of the marine rudder stock according to claim 1, wherein the tempering treatment is performed at 660 to 680 ℃ for 55 to 60 min.
5. Surface treatment process of marine rudder stock according to claim 1, characterised in that the polishing is electrolytic polishing.
6. The surface treatment process of a marine tiller according to claim 5, wherein the electrolyte during electrolytic polishing is phosphoric acid-chromic anhydride electrolyte.
7. The surface treatment process for a marine tiller according to claim 5, wherein the current density at the time of electrolytic polishing is 0.8A/cm2。
8. The surface treatment process of the marine rudder stock according to claim 6, wherein the temperature of the electrolyte during the electrolytic polishing is 53-57 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911301975.7A CN110760901A (en) | 2019-12-17 | 2019-12-17 | Surface treatment process for marine rudder stock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911301975.7A CN110760901A (en) | 2019-12-17 | 2019-12-17 | Surface treatment process for marine rudder stock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110760901A true CN110760901A (en) | 2020-02-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911301975.7A Pending CN110760901A (en) | 2019-12-17 | 2019-12-17 | Surface treatment process for marine rudder stock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110760901A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH059818A (en) * | 1991-07-09 | 1993-01-19 | Kanai Hiroyuki | Metallic traveler for spinning frame |
| CN1318460A (en) * | 2000-04-18 | 2001-10-24 | 南嵘机械厂股份有限公司 | Manufacture of feeding bolt for injection forming machine |
| CN1483857A (en) * | 2003-08-11 | 2004-03-24 | 沈阳飞机工业（集团）有限公司 | Method for plating dense chromium |
| KR20050080719A (en) * | 2004-02-10 | 2005-08-17 | 김병일 | Technology of coloring for stainless steel surface by enforced oxidation |
| CN1940144A (en) * | 2005-09-29 | 2007-04-04 | 中国核动力研究设计院 | Preparation process of Cr-C-O hydrogen permeation barrier layer on surface of zirconium hydride |
| CN102021621A (en) * | 2009-09-23 | 2011-04-20 | 上海通乐冶金设备工程有限公司 | Method for chroming stainless steel conductive roller |
| CN102717238A (en) * | 2012-06-29 | 2012-10-10 | 上海鸿得利重工股份有限公司 | Manufacture method of concrete conveying cylinder and product |
| CN102995099A (en) * | 2012-11-20 | 2013-03-27 | 浙江天马轴承股份有限公司 | Electrochemical polishing method for bearing retainer |
| CN104746110A (en) * | 2013-12-27 | 2015-07-01 | 沈阳鼓风机集团核电泵业有限公司 | Stainless steel fastener screw thread surface chrome plating technology used for nuclear main pump |
| CN107815710A (en) * | 2016-09-14 | 2018-03-20 | 中国石化扬子石油化工有限公司 | A kind of process for improving chromium coating adhesion |
-
2019
- 2019-12-17 CN CN201911301975.7A patent/CN110760901A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH059818A (en) * | 1991-07-09 | 1993-01-19 | Kanai Hiroyuki | Metallic traveler for spinning frame |
| CN1318460A (en) * | 2000-04-18 | 2001-10-24 | 南嵘机械厂股份有限公司 | Manufacture of feeding bolt for injection forming machine |
| CN1483857A (en) * | 2003-08-11 | 2004-03-24 | 沈阳飞机工业（集团）有限公司 | Method for plating dense chromium |
| KR20050080719A (en) * | 2004-02-10 | 2005-08-17 | 김병일 | Technology of coloring for stainless steel surface by enforced oxidation |
| CN1940144A (en) * | 2005-09-29 | 2007-04-04 | 中国核动力研究设计院 | Preparation process of Cr-C-O hydrogen permeation barrier layer on surface of zirconium hydride |
| CN102021621A (en) * | 2009-09-23 | 2011-04-20 | 上海通乐冶金设备工程有限公司 | Method for chroming stainless steel conductive roller |
| CN102717238A (en) * | 2012-06-29 | 2012-10-10 | 上海鸿得利重工股份有限公司 | Manufacture method of concrete conveying cylinder and product |
| CN102995099A (en) * | 2012-11-20 | 2013-03-27 | 浙江天马轴承股份有限公司 | Electrochemical polishing method for bearing retainer |
| CN104746110A (en) * | 2013-12-27 | 2015-07-01 | 沈阳鼓风机集团核电泵业有限公司 | Stainless steel fastener screw thread surface chrome plating technology used for nuclear main pump |
| CN107815710A (en) * | 2016-09-14 | 2018-03-20 | 中国石化扬子石油化工有限公司 | A kind of process for improving chromium coating adhesion |
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|---|
| L. PONTO等: "Electropolishing of chromium in phosphoric acid-sulphuric acid electrolytes", 《JOURNAL OF APPLIED ELECTROCHEMISTRY》 * |
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Application publication date: 20200207 |