ELECTROPLATING SHIELD DEVICE
An electroplating shield device, methods of fabricating the same, and methods of electroplating with the electroplating shield device are disclosed herein. The method of electroplating includes positioning an object in an electroplating shield device. The electroplating shield device may include a conduit configured to receive the object and a plurality of openings selectively extended between inner and outer surfaces of the conduit. The openings may be positioned between first and second ends of the conduit. The method may also include forming a layer on the object by transferring fluid through the plurality of openings to at least one of a first continuous section of the object comprising a minor of the object and a second continuous section of the object comprising a major of the object. A ratio of a thickness of the major to the minor after forming the layer may range from approximately 1:1 to approximately 1:18.
Various embodiments of the present disclosure relate generally to the field of electroplating and, more particularly, to an electroplating shield device and methods of fabricating the same.
BACKGROUNDMachinery parts are typically electroplated in electroplating solution baths or chambers. Electroplating large machinery parts requires a relatively large spacing (e.g., greater than 4 inches) between the electroplating electrode(s) and the large machinery parts. As such, high volumes of electroplating solutions are required for electroplating large machinery parts. Further, machinery parts with irregular shapes often cause variations in thickness among electroplate coating layers in various areas of the machinery parts (i.e., layers that are coated over various areas of the machinery part via electroplating). Such variations in thickness among electroplate coating layers may result in reduced wear and corrosion resistance.
Existing methods of reducing variations in thickness among electroplate coating layers include conducting multiple round plating operations (e.g., 2-3 plating operations) to increase thickness in deficient regions with a thinner coating layer. Such methods may involve the removal of excess coating and/or nodules in regions where the coating is thicker after an initial electroplating operation, followed by subsequent plating. Carrying out these methods may require the machinery parts to be removed from the electroplating bath or chamber and then added back for further processing, leading to increased production time and cost. Thus, there is a need for an efficient and cost effective solution to electroplate machinery parts in any shape and/or size with a uniform electroplate coating thickness.
The present disclosure is directed to overcoming one or more of these challenges. The background description provided herein is for the purpose of generally presenting the context of the disclosure. Unless otherwise indicated herein, the materials described in this section are not prior art to the claims in this application and are not admitted to be prior art, or suggestions of the prior art, by inclusion in this section.
SUMMARY OF THE DISCLOSUREAccording to certain aspects of the disclosure, an electroplating shield device, methods of fabricating the same for improving electroplating processes, and methods of electroplating with the electroplating shield device are provided in this disclosure.
In one embodiment, a method of electroplating a part is disclosed. The method may comprise positioning an object in an electroplating shield device. The electroplating shield device may comprise a conduit configured to receive the object and a plurality of openings selectively extended between inner and outer surfaces of the conduit. The openings may be positioned between first and second ends of the conduit. The method may also comprise forming a layer on the object by transferring fluid through the plurality of openings to at least one of a first continuous section of the object comprising a minor of the object and a second continuous section of the object comprising a major of the object. A ratio of a thickness of the major to the minor after forming the layer may range from approximately 1:1 to approximately 1:18.
In another embodiment, an electroplating shield device is disclosed. The electroplating shield device may comprise a conduit extending from a first end to a second end. The conduit may be hollow and configured to receive an object for electroplating. A plurality of openings may be selectively extended between inner and outer surfaces. The openings may be positioned between the first and second ends of the conduit. The plurality of openings may be configured to transfer fluid to at least one of a first continuous section of the object and a second continuous section of the object.
In another embodiment, a method of fabricating an electroplating shield device is disclosed. The method may comprise forming a plurality of openings on a strip and forming a conduit with the strip. The conduit may be configured to receive an object for electroplating. The plurality of openings may be configured to transfer fluid to at least one of a first continuous section of the object comprising a minor of the object and a second continuous section of the object comprising a major of the object in a major-to-minor plating ratio ranging from approximately 1:1 to approximately 1:18.
Additional objects and advantages of the disclosed embodiments will be set forth in part in the description that follows, and in part will be apparent from the description, or may be learned by practice of the disclosed embodiments. The objects and advantages of the disclosed embodiments will be realized and attained by means of the elements and combinations particularly pointed out in the appended claims. As will be apparent from the embodiments below, an advantage to the disclosed devices, systems and methods is that machinery parts may be electroplated more efficiently while being wear and corrosion resistant with the electroplating shield device.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosed embodiments, as claimed.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate various exemplary embodiments and together with the description, serve to explain the principles of the disclosed embodiments.
The following embodiments describe an electroplating shield device and methods of using the electroplating shield device for improving electroplating processes, in accordance with one or more aspects of the present disclosure.
As described above, there is a need in the electroplating technology field to efficiently and uniformly electroplate, for example, machinery parts. For example, electroplating a large machinery part (e.g., a mud motor rotor) having irregular shapes may require at least 4 inches of space between a surface of the large machinery part and one or more electroplating electrodes (e.g., anode electrode(s)). That is, a relatively large electrode spacing may be required in order to produce a suitable electroplate coating layer on the large machinery part. However, such electrode spacing generally requires a large volume of electroplating solution, especially for large machinery parts (e.g., a mud motor rotor) that could extend beyond 30 feet. Minimizing the electrode spacing, in an attempt to reduce the amount of electroplating solution, may result in uneven electroplate coating layers formed on various areas of the large machinery part. Accordingly, the following embodiments describe an electroplating shield device that facilitates application of uniform electroplate coating layers on objects, such as machinery parts of any shape and/or size.
According to certain aspects of the present disclosure, the electroplating shield device may include a plurality of openings on a sidewall of the electroplating shield device. The plurality of openings may be arranged to align with particular areas of a machinery part. For example, the plurality of openings may be aligned with the minor regions (e.g., concave surfaces of a mud motor rotor) of the machinery part and/or the major regions (e.g., convex surfaces of a mud motor rotor) of the machinery part. The size and/or shape (e.g., rectangular though other shapes such as triangular, circular, elliptical, or any other polygon, etc.) of the openings may vary and/or be the same throughout. For example and without limitation, the openings may have a diameter of less than about 2 inch, e.g., less than about 1 inch, less than about 0.75 inch, or less than about 0.5 inch. The electric field applied between the machinery part and the electroplating electrode may vary based on the size of each of the plurality of openings. Additionally, the rate of flow of the electroplating solution through the plurality of openings may also vary. Thus, the amount and/or thickness of electroplate coating layers on the major regions and the minor regions of the machinery part may be controlled and/or be applied as desired. Accordingly, a uniform electroplate coating layer may be achieved on machinery parts with any shape and/or size by utilizing the electroplating shield device of the present disclosure.
The subject matter of the present description will now be described more fully hereinafter with reference to the accompanying drawings, which form a part thereof, and which show, by way of illustration, specific exemplary embodiments. An embodiment or implementation described herein as “exemplary” is not to be construed as preferred or advantageous, for example, over other embodiments or implementations; rather, it is intended to reflect or indicate that the embodiment(s) is/are “example” embodiment(s). Subject matter can be embodied in a variety of different forms and, therefore, covered or claimed subject matter is intended to be construed as not being limited to any exemplary embodiments set forth herein; exemplary embodiments are provided merely to be illustrative. Likewise, a reasonably broad scope for claimed or covered subject matter is intended. Among other things, for example, subject matter may be embodied as methods, devices, components, or systems. Accordingly, embodiments may, for example, take the form of hardware, software, firmware, or any combination thereof (other than software per se). The following detailed description is, therefore, not intended to be taken in a limiting sense.
Throughout the specification and claims, terms may have nuanced meanings suggested or implied in context beyond an explicitly stated meaning. Likewise, the phrase “in one embodiment” as used herein does not necessarily refer to the same embodiment and the phrase “in another embodiment” as used herein does not necessarily refer to a different embodiment. It is intended, for example, that claimed subject matter include combinations of exemplary embodiments in whole or in part.
The terminology used below may be interpreted in its broadest reasonable manner, even though it is being used in conjunction with a detailed description of certain specific examples of the present disclosure. Indeed, certain terms may even be emphasized below; however, any terminology intended to be interpreted in any restricted manner will be overtly and specifically defined as such in this Detailed Description section. Both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the features, as claimed.
In this disclosure, the term “based on” means “based at least in part on.” The singular forms “a,” “an,” and “the” include plural referents unless the context dictates otherwise. The term “exemplary” is used in the sense of “example” rather than “ideal.” The term “or” is meant to be inclusive and means either, any, several, or all of the listed items. The terms “comprises,” “comprising,” “includes,” “including,” or other variations thereof, are intended to cover a non-exclusive inclusion such that a process, method, or product that comprises a list of elements does not necessarily include only those elements, but may include other elements not expressly listed or inherent to such a process, method, article, or apparatus. Relative terms, such as, “substantially” and “generally,” are used to indicate a possible variation of ±10% of a stated or understood value.
Referring now to the appended drawings,
As shown in
Chamber 158 can be configured to receive and store part 121 and device 116. A length of chamber 158 can be greater than part 121 and device 116. The electroplating chamber 158 may be greater than 20 feet, for example, to receive and store large machinery parts (e.g., a rotor of positive-displacement motors, progressive cavity pumps, etc.). Chamber 158 can also be any length suitable for various other applications. Chamber 158 may be configured to receive the one or more electroplating solutions S (e.g., from a reservoir system via one or more conduits not shown in the figures) to facilitate the electroplating process.
Additionally, the electroplating chamber 158 may be connected a controller system, which can automatically or manually facilitate the electroplating processes by providing the electroplating solutions S and electric current to the electroplating chamber 158 via pumps, actuators, electrodes, and/or valves that are coupled to the electroplating chamber 158 and the reservoir system.
Part 121 can be greater than 30 feet, for example, and as shown in
In one embodiment, part 121 may be placed into the electroplating chamber 158, and device 116 may be placed in between the part 121 and the anode electrode 162. In this embodiment, the length of device 116 may be equal to or greater than the length of the part 121, so as to arrange or place the entire piece of part 121 within device 116. Device 116 can be arranged or placed relative to the part 121, so as to align one or more portions (e.g., upper portion, middle portion, lower portion, etc) of device 116 with minor regions F and/or major regions E of part 121. During an electroplating process, electroplating solutions S can flow through openings (e.g., 143 of
The size of each, and the density the openings of device 116 can vary depending on the shape, size, and/or dimensions of the part 121. Further, the size of each, and the density of the openings, can vary based on the distance between the anode electrode 162 and the surfaces of different regions (e.g., major regions E and minor regions F) of the part 121. In one embodiment, the electrode spacing between the anode electrode 162 and the part 121 may be 1 inch or less.
As shown in
In certain examples, where part 121 is a rotor, the size of each opening may depend on the rotor diameter and the number of lobes on the rotor. For example, openings 143 in the shield may be sized at 0.5 inch for 2 inch and 4 inch diameter rotors with 5 lobes. The diameter of the opening(s) may be increased for a rotor with a larger diameter. As such, openings 143 in the shield may be sized between 1 and 2 inches for an 8 inch diameter rotor with 5 lobes. In some examples, the size of the openings 143 may vary based on the distance between the shield and part 121 (e.g., rotor).
Ends 216 and 214 may be “zones” that include a continuous, cylindrical surface between the respective end and beginning of openings 143 (e.g., a non-perforated zone). In some embodiments, proximal and distal ends 216 and 214 of the part 121 may experience a higher electroplating rate compared to the rest of the part 121. For example, a predetermined vertical length at each end of the part 121 may gain a thicker growth of electroplate coating layer compared to the rest of the part 121. Further, device 116 may be arranged or placed within an electroplating chamber (e.g., the electroplating chamber 158) in the manner to cover at least about ends 214 and 216 of the part 121. Accordingly, a uniform electroplate coating layer may be formed on the part 121 by utilizing the electroplating shield device 116, in accordance with one or more aspects of the present disclosure.
In one embodiment, portions 147 of device 116 that form its sidewall around openings 143 can be made from a material including, for example, nickel-chromium alloys (e.g., ICONEL alloys, a registered trademark of Special Metals Corporation, mp 1390° C. to 1425° C.) or any other suitable stainless steels, high strength steels with high nickel content, and/or any other metal substrates with high nickel content having a melting point in excess of about 800° C. materials that have a linear coefficient of thermal expansion (CTE) value substantially similar to ICONEL alloys. In at least one embodiment, the material used to form the sidewall around openings 143 may include iron alloys (e.g., iron-cobalt alloys, iron-nickel alloys, iron-tungsten alloys, and iron-chromium alloys etc.) and cobalt alloys (e.g., cobalt-chromium alloys). In some aspects, device 116 may or may not be conformal to part 121 and may or may not have though holes for targeted plating. Once the shape of part 121 has been determined, device 116 can receive a chemical resistant coating for longevity and to prevent buildup.
Such a thin and lightweight construction for device 116, as shown specifically with surface 116b of
Accordingly, the example data shown in
The advantageous improvement of the herein disclosed inductive shield therefore improves current throw into minor diameter F of part 121 thereby reducing additional plating processing which otherwise would be necessary and therefore saving production time and reduction of touch time. Advantageously, the heretofore describes use of both anode electrodes 162 and device 116 to produce a better distributed deposit on part 121, including through its major and minor regions, through use of inductive and/or bipolar current.
In some aspects of the present disclosure, the shape, size, and configuration of each of openings of the inductive shield device may be varied to achieve a major-to-minor plating ratio of approximately 1:1. In examples wherein the inductive shield device of the present disclosure has been configured to achieve a major-to-minor plating ratio of approximately 1:1, such that a ratio of thickness of the major region to the minor region is approximately 1:1, the electroplating operation may be performed in a single step.
A method of fabricating an electroplating shield device of the present disclosure may include forming a plurality of openings on a strip and forming a conduit with the strip. Each of the openings may be varied to achieve a desired to major-to-minor plating ratio. For example, the openings may be designed to transfer fluid to at least one of a first continuous section of an object (e.g., machinery part) comprising a minor of the object and a second continuous section of the object comprising a major of the object in a major-to-minor plating ratio. The major-to-minor plating ratio, corresponding to a ratio of thickness achieved, may range from approximately 1:1 to approximately 1:18.
It should be appreciated that in the above description of exemplary embodiments, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various aspects. This method of disclosure, however, is not to be interpreted as reflecting an intention that the claimed embodiment requires more features than are expressly recited in each claim. Thus, the claims following the Detailed Description are hereby expressly incorporated into this Detailed Description, with each claim standing on its own as a separate embodiment of this disclosure.
Furthermore, while some embodiments described herein include some but not other features included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the disclosure, and form different embodiments, as would be understood by those skilled in the art. For example, in the following claims, any of the claimed embodiments can be used in any combination.
Thus, while certain embodiments have been described, those skilled in the art will recognize that other and further modifications may be made thereto without departing from the spirit of the disclosure, and it is intended to claim all such changes and modifications as falling within the scope of the disclosure. For example, functionality may be added or deleted from the block diagrams and operations may be interchanged among functional blocks. Steps may be added or deleted to methods described within the scope of the present disclosure.
The above disclosed subject matter is to be considered illustrative, and not restrictive, and the appended claims are intended to cover all such modifications, enhancements, and other implementations, which fall within the true spirit and scope of the present disclosure. Thus, to the maximum extent allowed by law, the scope of the present disclosure is to be determined by the broadest permissible interpretation of the following claims and their equivalents, and shall not be restricted or limited by the foregoing detailed description. While various implementations of the disclosure have been described, it will be apparent to those of ordinary skill in the art that many more implementations and implementations are possible within the scope of the disclosure. Accordingly, the disclosure is not to be restricted.
Claims
1. A method of electroplating a part, comprising:
- positioning an object in an electroplating shield device, the electroplating shield device comprising a conduit configured to receive the object and a plurality of openings selectively extended between inner and outer surfaces of the conduit, the openings being positioned between first and second ends of the conduit; and
- forming a layer on the object by transferring fluid through the plurality of openings to at least one of a first continuous section of the object comprising a minor of the object and a second continuous section of the object comprising a major of the object;
- wherein a ratio of a thickness of the major to the minor after forming the layer ranges from approximately 1:1 to approximately 1:18.
2. The method of claim 1, wherein the plurality of openings are selectively extended in helical shape, and wherein the conduit is formed of a metal alloy.
3. The method of claim 2, wherein the metal alloy is selected from one or more nickel-chromium alloys, one or more cobalt alloys, and one or more iron alloys.
4. The method of claim 1, wherein the conduit is formed of one or more nickel-chromium alloys.
5. The method of claim 1, wherein the conduit is formed of material comprising a melting point of approximately 1390° C. to 1425° C.
6. The method of claim 1, wherein the conduit is formed of material comprising a melting point in excess of about 800° C.
7. The method of claim 1, wherein the layer is formed in an electroplating chamber.
8. The method of claim 1, wherein the object is electroplated prior to positioning in the electroplating shield device and forming the layer.
9. The method of claim 8, wherein the ratio of the thickness of the major to the minor after forming the layer is approximately 1:18.
10. The method of claim 1, wherein the layer is formed substantially on the first continuous section of the object comprising the minor of the object.
11. The method of claim 1, wherein the layer is formed by transferring fluid through the plurality of openings to the first continuous section of the object comprising the minor of the object and the second continuous section of the object comprising the major of the object.
12. The method of claim 11, wherein the ratio of the thickness of the major to the minor after forming the layer is approximately 1:1.
13. An electroplating shield device comprising:
- a conduit extending from a first end to a second end, the conduit being hollow and configured to receive an object for electroplating;
- a plurality of openings selectively extended between inner and outer surfaces, the openings being positioned between the first and second ends of the conduit; and
- wherein the plurality of openings are configured to transfer fluid to at least one of a first continuous section of the object and a second continuous section of the object.
14. The electroplating shield device of claim 13, wherein the conduit is formed of one or more nickel-chromium alloys, one or more chromium alloys, or one or more iron alloys.
15. The electroplating shield device of claim 14, wherein the first continuous section of the object comprises a minor of the object and the second continuous section of the object comprises a major of the object, and wherein the plurality of openings of the conduit are configured to plate the object with a major-to-minor plating ratio ranging from approximately 1:1 to approximately 1:18.
16. The electroplating shield device of claim 13, wherein the conduit is formed of material comprising a melting point of approximately 1390° C. to 1425° C.
17. The electroplating shield device of claim 13, wherein the conduit is formed of material comprising a melting point in excess of about 800° C.
18. The electroplating shield device of claim 13, wherein the plurality of openings form a continuous helical section on a surface of the conduit between the first and second ends.
19. The electroplating shield device of claim 13, wherein the conduit comprises:
- a first section proximate to the first end, the first section comprising a first cylindrical surface without the plurality of openings; and
- a second section proximate to the second end, the second section comprising a second cylindrical surface without the plurality of openings.
20. A method of fabricating an electroplating shield device, comprising:
- forming a plurality of openings on a strip; and
- forming a conduit with the strip;
- wherein the conduit is configured to receive an object for electroplating; and
- wherein the plurality of openings are configured to transfer fluid to at least one of a first continuous section of the object comprising a minor of the object and a second continuous section of the object comprising a major of the object in a major-to-minor plating ratio ranging from approximately 1:1 to approximately 1:18.
Type: Application
Filed: Sep 21, 2022
Publication Date: Mar 21, 2024
Inventors: Christian WIGGINS (Phoenix, AZ), James PIASCIK (Morris Plains, NJ), Joseph W. MINTZER, III (Phoenix, AZ)
Application Number: 17/934,121