CN104357885A - Protection method for local chromium electroplating of shaft type part - Google Patents
Protection method for local chromium electroplating of shaft type part Download PDFInfo
- Publication number
- CN104357885A CN104357885A CN201410546199.8A CN201410546199A CN104357885A CN 104357885 A CN104357885 A CN 104357885A CN 201410546199 A CN201410546199 A CN 201410546199A CN 104357885 A CN104357885 A CN 104357885A
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- China
- Prior art keywords
- chromium
- chromium plating
- conductive
- termination
- fixture
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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
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/02—Electroplating of selected surface areas
- C25D5/022—Electroplating of selected surface areas using masking means
-
- 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
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- 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 protection method for local chromium electroplating of a shaft type part. The outer surface of the part comprises chromium-electroplated areas and non-chromium-electroplated areas. The method is characterized in that the non-chromium-electroplated areas of the part are covered with and protected by conductive protection materials before a chromium electroplating process.
Description
Technical field
What the present invention relates to is aircraft metal parts electrodeposited chromium field, is specifically related to the guard method of a kind of aircraft axial workpiece when local chromium plating.
Background technology:
Chromium coating, because have the features such as the wear resistance that hardness is high, frictional coefficient is low, good, is widely used aboard.Many parts have special requirement to chromium coating; need to carry out local chromium plating; at present for needing the part carrying out local electric chromium plating; plating handbook and textbook only give the guard method of a few class materials such as plastic cloth parcel, brush peelable glue, use insulation electroplating protection adhesive tape; this a few class guard method is because protecting materials is non-conductive; big current region can be produced around protecting materials, i.e. fringing effect, cause chromium coating thickening at protecting materials edge.For Fig. 1 part, this part chromium plating region is many, area large, and the chromium coating size of design requirements is thick; current ratio needed for chromium plating is comparatively large, and adopt above guard method chromium plating, the fringing effect of part is more obvious; need to carry out ground after part plating; local chromium plating, grinding difficulty is large, causes grinding partially, grinds and leak; damage is caused to part; produce grinding crack, and the grinding time is long, reduces working (machining) efficiency.Plastic cloth parcel can cause chromium coating section part to produce right angle, reduces the bonding force of layers of chrome and matrix, easily retains solution, cause plating solution to lose, serious environment pollution in plastic cloth.
Summary of the invention
For the deficiencies in the prior art, the object of this invention is to provide a kind of guard method of chromium plating, this kind of method can make the coating obtaining size uniform in part electroplating process, meets the requirement of coating to size, and after reducing plating, machine adds stock removal, reduces grinding crack.
A guard method for axial workpiece local electric chromium plating, this part outside surface has chromium plating district and non-chromium plating district, it is characterized in that before chrome-plated process, adopts conductive protecting materials that the non-chromium plating district of part is carried out covering protection.
The application proposes " part edge current expansion drainage "; namely conductive protection material is adopted to replace non-conductive protecting materials (plastic cloth); conductive protection material can select can electrically conductive lead adhesive tape, can conductive coating etc.; increase fixture in part termination simultaneously, the expansion of layers of chrome edge current is drained on conductive protection material and fixture.
The present invention compared with prior art has the following advantages:
By can the protection of electro-conductive material, big current during chromium plating can be made to be distributed to uniformly on electro-conductive material, make chromium plating region and electro-conductive material form a unified plating area, thoroughly solve the partially thick phenomenon of chromium plating fringe region.After the plating of these class methods of reality proof, layers of chrome size is substantially even, and the basic uniformity of layers of chrome thickness of edge layers of chrome thickness and centre, does not occur the situation that edge layers of chrome is too thick.The method can not make chromium coating produce section, avoids the bonding force reducing layers of chrome and matrix; Also can not retain solution, decrease plating solution loss.
Below in conjunction with embodiment accompanying drawing, the application is described in further detail
Accompanying drawing explanation
Fig. 1 is part schematic diagram
Fig. 2 is guard method schematic diagram
Fig. 3 is fixture scheme of installation
Number description: 1,2,3,4,5 regions are the chromium plating district of part 14.6,7,8,9,10,11 is the non-chromium plating district of part 14, and 12,13 is termination fixture.
Embodiment
See accompanying drawing, carry out the introduction of present method for the part shown in Fig. 1, part 14 is axial workpieces, and its surface is made up of step-like chromium plating district 1,2,3,4,5 and non-chromium plating district 6,7,8,9,10,11.
As shown in Figure 2, in order to protect the condition of surface in non-chromium plating district, before enforcement chromium plating, the application adopts and can carry out winding protection in the non-chromium plating district 6,7,8,9,10 of electrically conductive lead adhesive tape to part.Chromium plating border extended when edge big current can be protected by conventional plastic cloth by this kind of guard method drains into can on electrically conductive lead adhesive tape.
In the non-chromium plating district 6 and 11 at part two ends, because it only has 3-5mm wide, plumbous adhesive tape cannot be directly adopted to protect, the hanger 15 be connected with copper rod is needed during part plating simultaneously, for this reason, the application devises a kind of termination fixture 12 and termination fixture 13 of extension respectively at the two ends of part, termination fixture 12 and termination fixture 13 can be connected to the two ends of part, hanger 15 is connected on one of them termination fixture 12, use again can electrically conductive lead adhesive tape by non-chromium plating district 6 and termination fixture 13, non-chromium plating district 11 and termination fixture 12 carry out winding covering protection, the expansion of chromium coating edge current is drained on conductive protection material and fixture, like this in electroplating process, just by large current expansion to part termination fixture can on conductive tape, make the coating of part termination even, and the dress of part is hung when being conducive to chromium plating.
The present invention mainly solves the even problem of axial workpiece Segmented electrical chromium plating uneven coating, ensures the even of layers of chrome, solves the uneven present situation needing the rear mechanical grinding of plating of layers of chrome, prevents the generation of crackle, also produce for part and saved a large amount of time.
Claims (3)
1. a guard method for parts locally electrodeposited chromium, this part outside surface has chromium plating district and non-chromium plating district, it is characterized in that before chrome-plated process, adopts conductive protecting materials that the non-chromium plating district of part is carried out covering protection.
2. the guard method of parts locally electrodeposited chromium as claimed in claim 1, it is characterized in that, described conductive protection material is can electrically conductive lead adhesive tape or conductive coating.
3. the guard method of parts locally electrodeposited chromium as claimed in claim 1 or 2; it is characterized in that; non-chromium plating district is when part termination; at increase termination, the termination fixture of part; again to non-chromium plating district and the termination fixture employing conductive protection material covering protection of part termination, the expansion of chromium coating edge current is drained on conductive protection material and fixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410546199.8A CN104357885A (en) | 2014-10-15 | 2014-10-15 | Protection method for local chromium electroplating of shaft type part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410546199.8A CN104357885A (en) | 2014-10-15 | 2014-10-15 | Protection method for local chromium electroplating of shaft type part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104357885A true CN104357885A (en) | 2015-02-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410546199.8A Pending CN104357885A (en) | 2014-10-15 | 2014-10-15 | Protection method for local chromium electroplating of shaft type part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104357885A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104818507A (en) * | 2015-04-02 | 2015-08-05 | 中航飞机股份有限公司西安飞机分公司 | Method for preventing cracking of electroplated chrome layer at internal cylinder part slope |
| CN104831325A (en) * | 2015-06-08 | 2015-08-12 | 中国南方航空工业(集团)有限公司 | Output shaft chrome plating method and output shaft chrome plating fixture |
| CN106757229A (en) * | 2016-12-02 | 2017-05-31 | 武汉船用机械有限责任公司 | A kind of electro-plating method |
| CN109609996A (en) * | 2018-12-12 | 2019-04-12 | 东华大学 | Combination hanger for batch hard chrome plating of warp knitting machine groove needles |
| CN109628969A (en) * | 2018-11-27 | 2019-04-16 | 中国航发贵州黎阳航空动力有限公司 | A kind of piston rod part chrome-plating device |
| CN111515637A (en) * | 2020-04-03 | 2020-08-11 | 中国航发哈尔滨东安发动机有限公司 | Processing method of slender shaft with internal spline |
| CN114059109A (en) * | 2021-12-01 | 2022-02-18 | 上海通乐冶金设备工程有限公司 | Manufacturing process of anti-corrosion coating on surface of conductive roller |
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| US5716510A (en) * | 1995-10-04 | 1998-02-10 | Sms Schloemann-Siemag Inc. | Method of making a continuous casting mold |
| CN1392905A (en) * | 2000-09-26 | 2003-01-22 | 伊斯曼柯达公司 | Method for producing metal mask and metal mask |
| CN1908247A (en) * | 2005-06-20 | 2007-02-07 | 株式会社山本镀金试验器 | Electroplating jig |
| TW200844268A (en) * | 2007-05-02 | 2008-11-16 | Jin Yee Entpr Co Ltd | Partial electroplating method without step mismatch |
| CN101330799A (en) * | 2007-06-22 | 2008-12-24 | 健鼎科技股份有限公司 | Leadless electroplating method for independent welding pad |
| CN101463494A (en) * | 2007-12-19 | 2009-06-24 | 富葵精密组件(深圳)有限公司 | Electroplating method |
| CN202643877U (en) * | 2012-06-07 | 2013-01-02 | 广州美维电子有限公司 | Printed-circuit board electroplating hanging-board structure |
| CN102912392A (en) * | 2012-08-28 | 2013-02-06 | 南通市申海工业技术科技有限公司 | Local electroplating device for buffer shaft of driving mechanism of control rod of nuclear reactor |
| CN103348042A (en) * | 2011-01-28 | 2013-10-09 | Ppg工业俄亥俄公司 | Electrical contact arrangement for coating process |
| CN103774189A (en) * | 2014-01-10 | 2014-05-07 | 今创集团股份有限公司 | Process method of composite surface treatment with chromium plating and water-transfer printing |
-
2014
- 2014-10-15 CN CN201410546199.8A patent/CN104357885A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5716510A (en) * | 1995-10-04 | 1998-02-10 | Sms Schloemann-Siemag Inc. | Method of making a continuous casting mold |
| CN1392905A (en) * | 2000-09-26 | 2003-01-22 | 伊斯曼柯达公司 | Method for producing metal mask and metal mask |
| CN1908247A (en) * | 2005-06-20 | 2007-02-07 | 株式会社山本镀金试验器 | Electroplating jig |
| TW200844268A (en) * | 2007-05-02 | 2008-11-16 | Jin Yee Entpr Co Ltd | Partial electroplating method without step mismatch |
| CN101330799A (en) * | 2007-06-22 | 2008-12-24 | 健鼎科技股份有限公司 | Leadless electroplating method for independent welding pad |
| CN101463494A (en) * | 2007-12-19 | 2009-06-24 | 富葵精密组件(深圳)有限公司 | Electroplating method |
| CN103348042A (en) * | 2011-01-28 | 2013-10-09 | Ppg工业俄亥俄公司 | Electrical contact arrangement for coating process |
| CN202643877U (en) * | 2012-06-07 | 2013-01-02 | 广州美维电子有限公司 | Printed-circuit board electroplating hanging-board structure |
| CN102912392A (en) * | 2012-08-28 | 2013-02-06 | 南通市申海工业技术科技有限公司 | Local electroplating device for buffer shaft of driving mechanism of control rod of nuclear reactor |
| CN103774189A (en) * | 2014-01-10 | 2014-05-07 | 今创集团股份有限公司 | Process method of composite surface treatment with chromium plating and water-transfer printing |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104818507A (en) * | 2015-04-02 | 2015-08-05 | 中航飞机股份有限公司西安飞机分公司 | Method for preventing cracking of electroplated chrome layer at internal cylinder part slope |
| CN104831325A (en) * | 2015-06-08 | 2015-08-12 | 中国南方航空工业(集团)有限公司 | Output shaft chrome plating method and output shaft chrome plating fixture |
| CN104831325B (en) * | 2015-06-08 | 2017-05-31 | 中国南方航空工业(集团)有限公司 | A kind of output shaft chrome-plating method |
| CN106757229A (en) * | 2016-12-02 | 2017-05-31 | 武汉船用机械有限责任公司 | A kind of electro-plating method |
| CN109628969A (en) * | 2018-11-27 | 2019-04-16 | 中国航发贵州黎阳航空动力有限公司 | A kind of piston rod part chrome-plating device |
| CN109628969B (en) * | 2018-11-27 | 2020-08-11 | 中国航发贵州黎阳航空动力有限公司 | Piston rod local chromium plating device |
| CN109609996A (en) * | 2018-12-12 | 2019-04-12 | 东华大学 | Combination hanger for batch hard chrome plating of warp knitting machine groove needles |
| CN111515637A (en) * | 2020-04-03 | 2020-08-11 | 中国航发哈尔滨东安发动机有限公司 | Processing method of slender shaft with internal spline |
| CN111515637B (en) * | 2020-04-03 | 2022-01-14 | 中国航发哈尔滨东安发动机有限公司 | Processing method of slender shaft with internal spline |
| CN114059109A (en) * | 2021-12-01 | 2022-02-18 | 上海通乐冶金设备工程有限公司 | Manufacturing process of anti-corrosion coating on surface of conductive roller |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150218 |
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| WD01 | Invention patent application deemed withdrawn after publication |