CN104451795A - Chromium plating device for step-shaped inner hole part - Google Patents
Chromium plating device for step-shaped inner hole part Download PDFInfo
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- CN104451795A CN104451795A CN201410569031.9A CN201410569031A CN104451795A CN 104451795 A CN104451795 A CN 104451795A CN 201410569031 A CN201410569031 A CN 201410569031A CN 104451795 A CN104451795 A CN 104451795A
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- China
- Prior art keywords
- inner hole
- spirrillum
- plating
- stepped hole
- hole part
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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
- C25D7/04—Tubes; Rings; Hollow bodies
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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 chromium plating device for a step-shaped inner hole part. The chromium plating device comprises the step-shaped inner hole part (1) used as a cathode, a step spiral plating wire (2) serving as an anode is arranged in a step hole (3) of the step-shaped inner hole part (1), and the step spiral plating wire (2) is made of lead or lead-antimony alloy containing 6-8% of antimony. The chromium plating device has a simple structure, and can be used for improving the shielding effect produced by the step part when the inner hole of the part is plated with chromium, improving the flowability of a plating solution and ensuring the uniformity of an inner hole coating of the part so as to greatly improve the chromium plating quality of the inner hole of the part.
Description
Technical field
The present invention relates to a kind of electrodeposited chromium device for step-like inner hole part, belong to electrodeposited chromium technical field.
Background technology
Chromium coating has the features such as hardness is high, wear-resisting, heat-resisting, frictional coefficient is low, not easy to wear, stuck or be engaged when grinding with other metal pairs, is widely used in national defense industry and each machine building industry.But for structure peculiar part, if any step-like inner hole part, when electrodeposited chromium, because electrodeposited chromium itself exists the characteristic of depth capability, covering power difference, stepped hole bottom position just exists without coating or the inadequate problem of thickness of coating.The method that usual employing increases thickness of coating size makes up this defect, and such processing method can bring new problem again, and one is that thickness of coating increases, and brings difficulty (coating hardness is high, processing difficulties) to subsequent mechanical processing; Two be thickness increase that coating uniformity becomes poorer, produce oval, cause subsequent mechanical to add to occur man-hour local location processing less than, local coating processed fall and show-through situation.Existing inner bore of part chrome-plated process is adopt lead rod as anode for chrome-plating and be fixed on inner bore of part centre to carry out chromium plating mostly, but such chrome-plated process is concerning having step-like inner hole part electrodeposited chromium, there are two subject matters, one is that stepped portions is because of shielding effect, add the characteristic of the dispersive ability difference of chromium plating own, cause stepped hole bottom position without coating or thickness of coating inadequate; Two is adopt lead rod anode, the flowing exchangeability of electroplate liquid can be caused very poor, cause coating easily coarse and lack of homogeneity, also there is local simultaneously and produces airbag and do not plate chromium or the very thin problem of coating.
Summary of the invention
The object of the invention is to, a kind of electrodeposited chromium device for step-like inner hole part is provided, this apparatus structure is simple, the shielding effect that when can improve inner bore of part chromium plating, stepped portions produces, improve the mobility of plating solution, ensure that inner bore of part coating is even, inner bore of part chromium plating quality is greatly improved.
Technical scheme of the present invention: a kind of electrodeposited chromium device for step-like inner hole part, comprise the step-like inner hole part as negative electrode, in the stepped hole of step-like inner hole part, be provided with the step spirrillum plating silk as anode, described step spirrillum plating silk adopts plumbous or containing antimony 6 ~ 8% lead antimony alloy to make.
The string diameter of described step spirrillum plating silk is 0.1 ~ 0.3 times of stepped hole internal diameter D, and the string diameter surface-area of step spirrillum plating silk is 1 ~ 1.5 times of stepped hole internal surface area.
Described step spirrillum plating silk is in the scope of stepped hole hole depth 3/4L, and the epimere diameter A of step spirrillum plating silk is 60% of stepped hole internal diameter D; In the scope of stepped hole hole depth 1/4L, the hypomere diameter B of step spirrillum plating silk is 80 ~ 90% of stepped hole internal diameter D.
Owing to adopting technique scheme, the invention has the advantages that: the present invention adopts step spirrillum plating silk to replace traditional anode lead rod as the anode of electrodeposited chromium, not only structure is simple for this step spirrillum plating silk, and the shielding effect that when can improve inner bore of part chromium plating, stepped portions produces, improve the mobility of plating solution, airbag can not be caused to cause local without coating, ensure that inner bore of part coating is even, inner bore of part chromium plating quality is greatly improved.Meanwhile, step spirrillum plating silk can also improve the thermal diffusivity of inner bore of part, avoids galvanic anode to occur scorification situation, saves chromium plating cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
The step-like inner hole part of description of reference numerals: 1-, 2-step spirrillum plating silk, 3-stepped hole.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearly, below in conjunction with drawings and Examples, the present invention is described in further detail.
Embodiment
For the electrodeposited chromium device of step-like inner hole part structural representation as shown in Figure 1, comprise the step-like inner hole part 1 as negative electrode, in the stepped hole 3 of step-like inner hole part 1, be provided with the step spirrillum plating silk 2 as anode, described step spirrillum plating silk 2 adopts lead or makes containing the lead antimony alloy of antimony 6 ~ 8%.The string diameter of described step spirrillum plating silk 2 is 0.3 times of stepped hole 3 internal diameter D, and the string diameter surface-area of step spirrillum plating silk 2 is 1.5 times of stepped hole 3 internal surface area.Described step spirrillum plating silk 2 is in the scope of stepped hole 3 hole depth 3/4L, and the epimere diameter A of step spirrillum plating silk 2 is 60% of stepped hole 3 internal diameter D; In the scope of stepped hole 3 hole depth 1/4L, the hypomere diameter B of step spirrillum plating silk 2 is 80 ~ 90% of stepped hole 3 internal diameter D.
Claims (3)
1. the electrodeposited chromium device for step-like inner hole part, comprise the step-like inner hole part (1) as negative electrode, it is characterized in that: in the stepped hole (3) of step-like inner hole part (1), be provided with step spirrillum plating silk (2) as anode, described step spirrillum plating silk (2) adopts plumbous or containing antimony 6 ~ 8% lead antimony alloy to make.
2. the electrodeposited chromium device for step-like inner hole part according to claim 1, it is characterized in that: the string diameter of described step spirrillum plating silk (2) is 0.1 ~ 0.3 times of stepped hole (3) internal diameter D, and the string diameter surface-area of step spirrillum plating silk (2) is 1 ~ 1.5 times of stepped hole (3) internal surface area.
3. the electrodeposited chromium device for step-like inner hole part according to claim 2, it is characterized in that: described step spirrillum plating silk (2) is in the scope of stepped hole (3) hole depth 3/4L, and the epimere diameter A of step spirrillum plating silk (2) is 60% of stepped hole (3) internal diameter D; In the scope of stepped hole (3) hole depth 1/4L, the hypomere diameter B of step spirrillum plating silk (2) is 80 ~ 90% of stepped hole (3) internal diameter D.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410569031.9A CN104451795B (en) | 2014-10-23 | 2014-10-23 | A kind of electrodeposited chromium device for step-like inner hole part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410569031.9A CN104451795B (en) | 2014-10-23 | 2014-10-23 | A kind of electrodeposited chromium device for step-like inner hole part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104451795A true CN104451795A (en) | 2015-03-25 |
| CN104451795B CN104451795B (en) | 2017-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410569031.9A Active CN104451795B (en) | 2014-10-23 | 2014-10-23 | A kind of electrodeposited chromium device for step-like inner hole part |
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| CN (1) | CN104451795B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105506696A (en) * | 2016-01-25 | 2016-04-20 | 黄曦雨 | Device and method for electroplating small hole in control rod drive mechanism part |
| CN106245082A (en) * | 2016-08-30 | 2016-12-21 | 山西北方机械制造有限责任公司 | A kind of chrome-plating method of diameter-variable parts endoporus |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2407278A1 (en) * | 1977-10-27 | 1979-05-25 | Jeantet | Chromium plating anode - comprises lead alloy sheath into which is screw threaded metal of greater electrical conductivity |
| CN101135057A (en) * | 1999-07-01 | 2008-03-05 | 阿特拉沃达有限公司 | Electrode |
| CN201395634Y (en) * | 2009-04-27 | 2010-02-03 | 邵阳纺织机械有限责任公司 | Blind hole hard chromium plating device |
| CN202297815U (en) * | 2011-10-27 | 2012-07-04 | 上海宝钢设备检修有限公司 | Anode for tubular workpiece inner hole chroming |
| CN202465932U (en) * | 2011-12-27 | 2012-10-03 | 中国航空工业第六○七研究所 | Flexible auxiliary anode for electroplating inner cavity of multi-bend waveguide |
-
2014
- 2014-10-23 CN CN201410569031.9A patent/CN104451795B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2407278A1 (en) * | 1977-10-27 | 1979-05-25 | Jeantet | Chromium plating anode - comprises lead alloy sheath into which is screw threaded metal of greater electrical conductivity |
| CN101135057A (en) * | 1999-07-01 | 2008-03-05 | 阿特拉沃达有限公司 | Electrode |
| CN201395634Y (en) * | 2009-04-27 | 2010-02-03 | 邵阳纺织机械有限责任公司 | Blind hole hard chromium plating device |
| CN202297815U (en) * | 2011-10-27 | 2012-07-04 | 上海宝钢设备检修有限公司 | Anode for tubular workpiece inner hole chroming |
| CN202465932U (en) * | 2011-12-27 | 2012-10-03 | 中国航空工业第六○七研究所 | Flexible auxiliary anode for electroplating inner cavity of multi-bend waveguide |
Non-Patent Citations (1)
| Title |
|---|
| 杨建明等: ""电沉积技术中象形阳极的形状设计"", 《机械设计与研究》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105506696A (en) * | 2016-01-25 | 2016-04-20 | 黄曦雨 | Device and method for electroplating small hole in control rod drive mechanism part |
| CN105506696B (en) * | 2016-01-25 | 2017-12-12 | 黄曦雨 | One kind is used for aperture electro plating device and method on CRDM part |
| CN106245082A (en) * | 2016-08-30 | 2016-12-21 | 山西北方机械制造有限责任公司 | A kind of chrome-plating method of diameter-variable parts endoporus |
| CN106245082B (en) * | 2016-08-30 | 2018-07-24 | 山西北方机械制造有限责任公司 | A kind of chrome-plating method of diameter-variable parts endoporus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104451795B (en) | 2017-07-28 |
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