CN104947172A - Electroplating tool and use method thereof - Google Patents
Electroplating tool and use method thereof Download PDFInfo
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- CN104947172A CN104947172A CN201410123857.2A CN201410123857A CN104947172A CN 104947172 A CN104947172 A CN 104947172A CN 201410123857 A CN201410123857 A CN 201410123857A CN 104947172 A CN104947172 A CN 104947172A
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Abstract
The invention relates to an electroplating tool and a use method thereof. Firstly, the electroplating tool comprises an electrode array including a plurality of electrodes, wherein each electrode comprises an end part facing to a to-be-electroplated component; and the end parts of multiple electrodes form a simulation plane matched with at least one part of the shape of the to-be-electroplated component. The invention further relates to a method for carrying out electroplating by virtue of the electroplating tool.
Description
Technical field
The present invention relates to a kind of plating tool and use the method for this plating tool.
Background technology
High-pressure turbine blade is used in the rough circumstances of rear end, combustion chamber, and it is in high temperature, and as more than 1300 degrees Celsius runnings, twirl to obtain energy from high temperature gas flow.Described high service temperature makes high-pressure turbine blade easily lose efficacy because of corrosion.Therefore, the research of turbine blade is absorbed in how to improve its heat-resisting ability always.Along with the raising of service temperature, the resistance to elevated temperatures relying on blade metal material intrinsic not, and needs to use supercoat to improve its heat-and corrosion-resistant performance.
Usually the surface having the gas of very high temperature to flow through on blade is coated with ceramic heat-barrier coating (thermal barrier coating, TBC).For traditional high-pressure turbine blade, its blade listrium region scribbles ceramic heat-barrier coating usually, and other regions, as the die cavity region between listrium and tenon root, normally do not have cated, because the working temperature on this die cavity region is lower than the working temperature on blade and listrium region, do not have cated superalloy can tolerate described relatively low working temperature.But, along with the growth of the working hour of engine, from the burn into of hot gas and from the corrosive elements existed in gas as corrosion of sulphur etc., may cause, in this die cavity region, the defect such as tiny crack occurs.
Current discovery, the coating containing chromium is applicable to the erosion resistance for increasing die cavity region between high-pressure turbine blade supramarginal plate and tenon root.Plating be a kind of be widely used for providing on workpiece coating cost effective method.But, due to there are sharp-pointed depression or projective structure in this die cavity region of high-pressure turbine blade, be difficult in electroplating process obtain uniform electric field distribution in this die cavity region whole, thus be difficult to obtain uniform coat-thickness in this die cavity region whole.Therefore, obtain one deck to meet the Chromium coating that thickness uniformity requires in this die cavity region of high-pressure turbine blade there is larger difficulty.
Summary of the invention
On the one hand, a kind of plating tool comprises electrod-array, and this electrod-array comprises multiple electrode, and each electrode has one to be used in the face of the end of electroplated component, wherein, the end of described multiple electrode formed one with the falseface adapted at least partially of the shape of described electroplated component.
On the other hand, a kind of method uses the electrod-array comprising multiple electrode, wherein each electrode has an end be used in the face of electroplated component, the end of described multiple electrode formed one with the falseface adapted at least partially of the shape of described electroplated component.In the method with described electrod-array for anode is electroplated described electroplated component.
Accompanying drawing explanation
Be described for embodiments of the invention in conjunction with the drawings, the present invention may be better understood, in the accompanying drawings:
Figure 1A shows according to a kind of plating tool in an example of the present invention.
Figure 1B is the vertical view of the plating tool shown in Figure 1A.
The sectional view obtained along the plane in Figure 1B represented by A-A line that Fig. 1 C is the plating tool shown in Figure 1A.
Fig. 2 A shows according to a kind of plating tool in an example of the present invention.
Fig. 2 B is the vertical view of the plating tool shown in Fig. 2 A.
The sectional view obtained along the plane represented by B-B line in Fig. 2 B that Fig. 2 C is the plating tool shown in Fig. 2 A.
Fig. 3 A shows according to a kind of plating tool in an example of the present invention.
Fig. 3 B is the vertical view of the plating tool shown in Fig. 3 A.
The sectional view obtained along the plane represented by C-C line in Fig. 3 B that Fig. 3 C is the plating tool shown in Fig. 3 A.
Fig. 4 A shows according to a kind of plating tool in an example of the present invention.
Fig. 4 B is the vertical view of the plating tool shown in Fig. 4 A.
The sectional view obtained along the plane represented by D-D line in Fig. 4 B that Fig. 4 C is the plating tool shown in Fig. 4 A.
Fig. 5 A shows according to a kind of plating tool in an example of the present invention.
Fig. 5 B is the vertical view of the plating tool shown in Fig. 5 A.
The sectional view obtained along the plane represented by E-E line in Fig. 5 B that Fig. 5 C is the plating tool shown in Fig. 5 A.
Embodiment
Below will be described specific embodiments of the invention.Unless otherwise defined, the technical term used in claims and specification sheets or scientific terminology should be in the technical field of the invention the ordinary meaning that the personage with general technical ability understands.
Similar words such as " one " or " one " that uses in patent application specification of the present invention and claims does not represent quantity limitation, but represents to there is at least one." connection " or " being connected " etc. similar word be not defined in physics or the connection of machinery, no matter but can comprise electric connection, be direct or indirectly.The language of approximation used herein can be used for quantitative expression, shows to allow quantity to have certain variation when not changing basic function.Therefore, this exact value itself is not limited to the numerical value that the language such as " approximately ", " left and right " is revised.In addition, in the statement of " about first numerical value is to second value ", revise the first and second numerical value two numerical value approximately simultaneously.In some cases, approximating language may be relevant with the precision of surveying instrument.
Example of the present invention relates to a kind of region that can bend, as the region comprising sharp-pointed depression and protruding feature and (or) surface of high-pressure turbine blade provided the plating tool of uniform electroplated coating.As shown in figs. ia-1 c, a kind of plating tool 100 comprises electrod-array, and it comprises multiple electrode 104.Each electrode 104 has an end 106 in the face of electroplated component 601, and the end 106 of these electrodes 104 forms the surface (simulation three-dimensional surface) of a roughly corresponding described component 601 or wherein a part of shape.The end 106 of described multiple electrode 104 is arranged in an array roughly adapted with the shape of described component or electroplated part wherein.In order to provide electroplated coating on bending area, the end 106 of described electrode 104 forms the simulation curved surface roughly adapted with described bending area with may correspond to.Such as, in the illustrated embodiment in which, the end 106 of electrode 104 forms a simulation curved surface roughly adapted with concave spherical surface area to be coated.
Electrode 104 can be assembled on base portion 108 by acting in accordance with YIN YANG changes in four seasons end, in the illustrated embodiment in which, the arrangement parallel to each other of described electrode 104 and length not etc., to make its end 106 not at same plane thus to form a simulation curved surface.But it should be noted that described electrode 104 also can not parallelly be arranged, but otherwise arrange, such as, according to the actual needs, to intersect or the mode of isomery is arranged.
In some instances, electrode 104 described at least one axially can regulate along it, the end of these electrodes 104 can be formed and can adapt to difform different falseface.Electrode described at least one can be axially movable along it, can change the position of its end like this, thus the falseface that the end 106 changing described electrode 104 is formed.Like this, a plating tool just can adapt to the electroplated component of different shapes (such as, die cavity region between the blade listrium of different geometries and tenon root), be used for carrying out electroplating to form required coating on various difform region or component.Described electrode can all axially regulate along it.Described electrode regulates by mode manually or automatically.Such as, described electrode is axial by turn before and after manual mode along it, or the shape of the component adapting to electroplated automatically moves forward and backward, and such as, is automatically moved forward and backward under the control of the controller regulate by worm drive or linear electric motors.
In order to obtain uniform electroplated coating, can control the shape and size of described plating tool.Such as, the degree that the shape that can control falseface that electrode tip formed and electroplated component adapts, or the distance etc. between adjacent electrode.Described electrod-array can be arranged to the distance between each electrode tip and electroplated component can be kept within the specific limits, such as, at about 0.5 millimeter to about 10 millimeters, or further at about 0.5 millimeter to about 5 millimeters, or further in the scope of about 1 millimeter to about 3 millimeters.In some instances, the distance between adjacent electrode can be controlled in less than about 10 millimeters, or further below about 5 millimeters, or further below about 3 millimeters.Described multiple electrode can have identical or different cross-sectional shape or size.In some instances, all electrodes have identical section shape and size.In other some examples, the cross-sectional shape of at least one electrode or size different from other electrode.In some instances, use diameter between about 0.1 millimeter to about 5 millimeters, or the rounded section electrode further between about 0.1 millimeter to about 3 millimeters.
Described electrode may comprise conductive bodies, and this conductive bodies may not need to insulate with the interactional place of electroplated component to it.In some instances, the end of described conductive bodies exposes, and rest part may expose, and also may be insulated or SI semi-insulation.In some other examples, the end of described conductive bodies exposes and insulated or SI semi-insulation in side.
Described plating tool can comprise the electrolyte passage being positioned at described electrode or contiguous described electrode further, is used for allowing electrolytic solution flow wherein.Described electrolyte passage can communicate with pump and electrolyte source, to allow liquid electrolytic solution under the control of pump by described electrolyte passage.Described electrolyte passage can be formed in described electrode or be formed at hold described electrode base portion in.
As previously mentioned, on the workpiece (electroplated component) of three-dimensional surface with sharp protrusion and (or) concave shape, be difficult to obtain the uniform coating of thickness by plating.Usually, due to the electric field distribution that workpiece surface is uneven, can plating be there is on the top of the projection of three-dimensional surface, and the situation that the bottom of depression deficient plating can occur or even do not plate.And electrod-array described herein obtains a uniform electric field distribution by its discrete electrode on whole surface, and electrolytic solution can be provided between workpiece and electrode to wash away and supplement by the mode of conveying electrolyte in electrolyte passage.Like this, just can realize a stable and electroplating process efficiently, at a complicated three-dimensional surface, as the die cavity region between the listrium of high-pressure turbine blade and tenon root forms the uniform coating of thickness.Compared with the block type electrode of the three-dimensional surface of simulation workpiece, plating tool described herein can obtain the better coating of thickness evenness on the curved surface of workpiece, because block type electrode is all conduction in the scope of crossing over whole surface, the narrow zone be difficult between electrode and workpiece provides enough electrolytic solution to wash away.
As seen in figs. 2a-2c, plating tool 200 comprises electrod-array, and it comprises multiple electrode 202, and each electrode 202 can be solid conducting rod, and as previously mentioned, can be insulated or SI semi-insulation in conducting rod surface.This plating tool 200 also comprises base portion 204, it having the electrode hole 206 of hold electrodes 202 and the electrolyte passage 208 near described electrode hole, being used for allowing electrolytic solution from wherein flowing.When electrode 202 is contained in described hole 206, described electrolyte passage 208 intersperses among between electrode 202.Each electrode 202 has an end 210 that can act on electroplated component 602.The end 210 of described multiple electrode 202 forms a falseface roughly adapted with the shape of described component 602.Described electrolyte passage 208 can be used to the space be incorporated into by electrolytic solution between electrode and electroplated component, or is used for promoting the flowing of electrolytic solution.If plating tool 200 and component 602 do not immerse in electrolytic solution, introduce electrolytic solution by described electrolyte passage.If described plating tool 200 and component 602 immerse or immerse at least partly in electrolytic solution, the pump (not shown) be connected with electrolyte passage 208 can drive electrolytic solution in described electrolyte passage 208 forward or backward or the whole story flow, promote the flowing of the electrolytic solution between electrode 202 and component 602.
Described electrolyte passage also can be other shape and (or) other position being positioned at base portion.Such as, in plating tool 300 as shown in figs. 3 a-3 c, described electrolyte passage 308 is the slit running through base portion 304 along the axis of electrode 302.
As shown in figs. 4 a-4 c, plating tool 400 comprises electrod-array, and it comprises the multiple electrodes 402 be assembled on base portion 404, and each electrode 402 comprises conducting rod 406 and the housing 408 around described conducting rod 406.Described housing 408 can be different shape, includes but not limited to the cylinder of right cylinder and various different cross section.Described housing 408 can be conduction or nonconducting, its available conductive material make but in electroplating process no power.Between described conducting rod 406 and housing 408, form annular channel 409, be used for allowing electrolytic solution flow wherein.Similarly, described electrolyte passage 409 can be used to the space be incorporated into by electrolytic solution between electrode 402 and electroplated component 604, and (or) is used for promoting the flowing of electrolytic solution.Described conducting rod 406 longitudinally can stretch out described housing 408 and expose its end 410.The end 410 of conducting rod 406 described in these forms a simulation curved surface roughly adapted with the shape of described component 604.
As shown in figures 5a-5c, described plating tool 500 comprises electrod-array, and it comprises the multiple electrodes 502 be assembled on base portion 504, and each electrode 502 comprises contact tube 506, the passage 508 having electrolysis liquid to flow in this contact tube 506.Similarly, described electrolyte passage 508 can be used to the space be incorporated into by electrolytic solution between electrode 402 and electroplated component 604, and (or) is used for promoting the flowing of electrolytic solution.Described contact tube 506 can by end exposure by side insulation or SI semi-insulation.The end 510 of described multiple contact tube 506 defines a simulation curved surface roughly adapted with the shape of described component 605.
Foregoing plating tool can be used in electroplating technology, electroplate time with described electrod-array for anode, with electroplated component (workpiece) for negative electrode.
Before use, described plating tool can be assembled also opposite piece to have good positioning.By for plating tool as shown in figures 5a-5c, a kind of exemplary assembling and mounting process are described below.Inside establish the base portion 504 of through hole to be used as supporting rack, be used for supporting and fixing described multiple electrode 502.Described supporting rack 504 is installed on the top of the workpiece 605 of electroplated, described multiple electrode 502 is stretched in the through hole in supporting rack 504 respectively, allow the ends contact of these electrodes 502 to the surface of workpiece 605, thus make the end of these electrodes 502 form a three-dimensional simulation face roughly adapted with the geometric shape of workpiece.Then described electrode 502 is fixed on supporting rack 504, forms an electrod-array (that is, discrete anode matrix).By described electrod-array and workpiece 605 spaced apart, spaced apart between the three-dimensional simulation face that workpiece 605 and electrode tip are formed.Distance between each electrode tip 508 and workpiece 605 can be roughly the same.
In the process of plating, described electrod-array and workpiece can immerse or not immerse in electrolytic solution, and this decides according to the shape of plating tool and (or) concrete plating demand.If there is no electrolyte passage in electrode or between electrode, electrod-array and workpiece can be immersed or partly immerse in electrolytic solution.If be provided with electrolyte passage in electrode or between electrode, introduce electrolytic solution with the space between dealing electrode and workpiece, then can described electrod-array and workpiece be immersed in electrolytic solution, also described electrod-array and workpiece can not be immersed in electrolytic solution.
Described electrod-array and workpiece can be immersed or partly soak in the electrolytic solution, also allow electrolytic solution flow in described electrolyte passage simultaneously.Under the driving of the pump be connected with electrolyte passage, electrolytic solution can flow forward or backward, " forward " and " backward " described herein refer to towards with the direction away from electrode tip.Can allow the equal flow forward of electrolytic solution in each electrolyte passage, the electrolytic solution in each electrolyte passage also can be allowed to flow all backward, the electrolytic solution flow forward in partial electrolyte liquid passage and electrolytic solution in partial electrolyte liquid passage also can be allowed to flow backward.Wherein, the electrolyte stream flowed backward can improve the flow state stability of plating gap area.In addition, also can change the flow direction of electrolytic solution in electroplating process, at least one electrolyte passage, electrolytic solution is alternately flowing backward forward.Such as, electrolytic solution can flow by first flow forward more backward, or first flows flow forward more backward.
As previously mentioned, end due to the multiple electrodes in plating tool forms a surface roughly adapted with the simulation shape of workpiece, rise and be specially adapted to the curved surface that is used in electroplating technology in complexity, as the die cavity region between the listrium of high-pressure turbine blade and tenon root forms electroplated coating.Before also plating tool is located relatively by trade union college, clean and pre-treatment can be carried out to described workpiece.Then workpiece and electrod-array to be immersed or part to immerse in electrolytic solution and to stir electrolytic solution, and (or) start be connected to described electrolyte passage pump to make the electrolyte flow in electrolyte passage.Workpiece and electrod-array are connected respectively to negative pole and the positive pole of power supply, to apply electric current to workpiece and electrod-array, implement plating with the operation of certain processing parameter, workpiece obtains uniform coating.
Coating that is that foregoing plating tool can be used to obtain according to actual needs metal or compound.The die cavity region of available described plating tool between the listrium and tenon root of high-pressure turbine blade provides one containing the corrosion-resistant coating of chromium.
Although describe the present invention in conjunction with specific embodiment, those skilled in the art will appreciate that and can make many amendments and modification to the present invention.Therefore, recognize, the intention of claims is to cover all such modifications in true spirit of the present invention and scope and modification.
Claims (10)
1. a plating tool, it comprises:
Electrod-array, comprises multiple electrode, and each electrode has one to be used in the face of the end of electroplated component, wherein:
The end of described multiple electrode formed one with the falseface adapted at least partially of the shape of described electroplated component.
2. plating tool as claimed in claim 1, the end of wherein said multiple electrode forms simulation curved surface.
3. plating tool as claimed in claim 1, it comprises further and is arranged in electrode or the electrolyte passage of adjacent electrode, is used for allowing electrolytic solution flow wherein.
4. plating tool as claimed in claim 1, wherein electrode described at least one axially can regulate, to adapt to difform electroplated component along it.
5. plating tool as claimed in claim 1, it comprises base portion further, and this base portion comprises the electrode hole for accommodating described electrode and is close to the electrolyte passage of described electrode hole, is used for allowing electrolytic solution flow wherein.
6. plating tool as claimed in claim 1, wherein electrode described at least one comprises conducting rod and the housing around this conducting rod, forms a circular channel between this conducting rod and housing.
7. plating tool as claimed in claim 1, wherein electrode described at least one establishes the contact tube of passage in comprising.
8. a method, it comprises:
A kind of plating tool is provided, it comprises electrod-array, this electrod-array comprises multiple electrode, and each electrode has an end be used in the face of electroplated component, the end of wherein said multiple electrode formed one with the falseface adapted at least partially of the shape of described electroplated component; And
With described electrod-array for anode is electroplated described electroplated component.
9. method as claimed in claim 8, wherein said plating tool comprises further and is arranged in electrode or the passage of adjacent electrode, allows electrolytic solution flow in this passage in electroplating process.
10. method as claimed in claim 8, wherein electroplates described electroplated component on the die cavity region between listrium and tenon root being included in high-pressure turbine blade and provides electroplated coating.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410123857.2A CN104947172B (en) | 2014-03-28 | 2014-03-28 | Plating tool and the method using the plating tool |
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| CN201410123857.2A CN104947172B (en) | 2014-03-28 | 2014-03-28 | Plating tool and the method using the plating tool |
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| CN104947172B CN104947172B (en) | 2018-05-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111339581A (en) * | 2018-12-18 | 2020-06-26 | 通用电气公司 | Methods of forming electroformed components and related systems |
| WO2021057475A1 (en) * | 2019-09-29 | 2021-04-01 | 张宇明 | Electroplating anode and electroplating method using same |
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| EP4043619A4 (en) * | 2019-09-29 | 2024-01-10 | Yuming Zhang | Electroplating anode and electroplating method using same |
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| CN104947172B (en) | 2018-05-29 |
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