CN218989455U

CN218989455U - Electroetching device and system

Info

Publication number: CN218989455U
Application number: CN202223524998.4U
Authority: CN
Inventors: 杨建明; 张鹏丽; 付振华; 王雷; 王凯; 马伟
Original assignee: Fulian Yuzhan Technology Shenzhen Co Ltd
Current assignee: Fulian Yuzhan Technology Shenzhen Co Ltd
Priority date: 2022-12-22
Filing date: 2022-12-22
Publication date: 2023-05-09
Anticipated expiration: 2032-12-22

Abstract

The utility model provides an electroetching device which is used for etching the surface of a metal piece and comprises an electrolytic tank, and an anode component and a cathode component which are arranged in the electrolytic tank. The anode assembly includes a first conductive plate, an insulating plate, an electrical connection, and a magnetic assembly. The first conducting plate is used for being connected with a positive electrode of a power supply, an electric field is formed between the cathode assembly and the first conducting plate, and the electric field is used for covering the metal piece. The insulating board is arranged on the first conducting plate, a plurality of grooves are formed in the insulating board at intervals, and the grooves are used for accommodating metal pieces to be etched. The electric connecting piece is used for being electrically connected with the first conducting plate and the metal piece. The magnetic component is arranged on the insulating plate to form a magnetic field, and the magnetic field is used for covering the metal piece. The utility model provides an electroetching device is through setting up magnetic assembly at the insulating part, and the anion in the electrolyte can spiral migration to near the metalwork to increase the anion and get into near the regional probability of dysmorphism face, improve the inhomogeneous problem of etching. In addition, the application also provides an electroetching system.

Description

Electroetching device and system

Technical Field

The utility model relates to the field of surface machining of metal parts, in particular to an electroetching device and an electroetching system.

Background

Before the metal piece is combined with the plastic piece, a plurality of micropore structures are needed to be etched on the surface of the metal piece, so that when the surface of the metal piece is combined with the plastic piece, part of the plastic piece can be embedded into the micropore structures to enhance the combination strength of the metal piece and the plastic piece. The prior art mainly forms a micropore structure through an electrochemical etching mode, but the electrochemical etching of metal pieces (such as curved surfaces, grooves and bulges) with special-shaped structures is difficult to form uniform micropore structures on the surfaces of all areas, so that the combination performance of the subsequent metal pieces and plastic pieces is affected.

Disclosure of Invention

In view of the foregoing, it is necessary to provide an electroetching apparatus to improve etching uniformity.

In addition, the application also provides an electroetching system.

An electroetching apparatus for etching a surface of a metal article, comprising:

an electrolytic tank for accommodating an electrolyte to submerge the metal piece;

the cathode assembly is arranged in the electrolytic tank and is used for connecting with a negative electrode of a power supply;

an anode assembly disposed within the electrolytic cell, the anode assembly comprising:

the first conductive plate is used for connecting a positive electrode of a power supply, an electric field is formed between the cathode assembly and the first conductive plate, and the electric field is used for covering the metal piece;

the insulating plate is arranged on the first conductive plate, a plurality of grooves are formed in the insulating plate at intervals, and the grooves are used for accommodating the metal piece to be etched;

the electric connecting piece is used for being electrically connected with the first conducting plate and the metal piece; and the magnetic assembly is arranged on the insulating plate to form a magnetic field, and the magnetic field is used for covering the metal piece.

Further, the magnetic assembly comprises a plurality of permanent magnet pieces, two adjacent permanent magnet pieces are respectively arranged on two opposite sides of each groove, and different magnetic poles of the two adjacent permanent magnet pieces are oppositely arranged to form uniform magnetic fields.

Further, the cathode assembly includes a second conductive plate disposed in opposite parallel with the first conductive plate to form a uniform electric field, and each of the permanent magnet pieces is disposed perpendicularly to the first conductive plate or the second conductive plate such that the uniform magnetic field is disposed perpendicularly to the uniform electric field.

Further, the electric connecting piece comprises an elastic contact piece, the elastic contact piece penetrates through the insulating plate, one end of the elastic contact piece stretches into the groove and abuts against the metal piece, and the other end of the elastic contact piece abuts against the conductive plate.

Further, the anode assembly further comprises a support connected with the anode of the power supply, the first conductive plate comprises a hook connected with the support, and the hook is electrically connected with the support.

Further, the number of the second conductive plates is two, the number of the first conductive plates is at least one, the two second conductive plates are arranged at intervals, and at least one first conductive plate is arranged between the two second conductive plates.

Further, the cathode assembly further includes:

the insulating bottom plate is arranged on one side of the first conductive plate, which is away from the insulating plate; and

the insulating cover plate is arranged on one side, deviating from the first conducting plate, of the insulating plate, and is connected with the insulating bottom plate so as to enable the metal piece to be propped against the groove.

Further, the cathode assembly further comprises a plurality of fasteners, wherein the fasteners comprise handle portions and screws connected with the handle portions, and the screws penetrate through the insulating bottom plate and the insulating cover plate.

Further, the electroetching apparatus further comprises a bubbling member, and the bubbling machine is used for bubbling the electrolyte in the electrolytic tank.

An electroetching system for etching a surface of a metal article, comprising: the positive electrode of the power supply is connected with the anode component, the negative electrode of the power supply is connected with the cathode component, and the electrolyte is used for immersing the metal piece.

The utility model provides an electroetching device is through setting up magnetic assembly at the insulating part, in etching process, and anion in the electrolyte receives the combined action of electric field force and lorentz force, realizes the spiral migration. Thereby increasing the probability of anions entering the area near the special-shaped surface and improving the problem of uneven etching caused by uneven anion distribution.

Drawings

Fig. 1 is a schematic diagram of an electroetching system according to an embodiment of the present application.

Fig. 2 is an overall schematic of an anode assembly in the electroetching system shown in fig. 1.

Fig. 3 is an exploded view of the anode assembly shown in fig. 2.

Fig. 4 is a cross-sectional view of the anode assembly shown in fig. 2 taken along line IV-IV.

Fig. 5 is a cross-sectional view of the anode assembly shown in fig. 2 taken along line V-V.

Fig. 6 is a schematic view showing the movement state of anions in the etching state of the electroetching system shown in fig. 1.

Fig. 7A is a micrograph of a metal piece etched according to an embodiment of the present application.

Fig. 7B is a micrograph of a metal piece of a comparative example of the present application after etching.

Description of the main reference signs

Electroetching system 200

Power supply 201

Electrolyte 202

Electroetching apparatus 100

Electrolytic cell 10

Anode assembly 20

First conductive plate 21

Hook 211

Insulating plate 22

Groove 221

Bottom plate 231

Elastic contact 232

Electric connector 23

Magnetic assembly 24

Permanent magnet sheet 241

Bracket 25

Insulating base plate 26

Insulating cover plate 27

Fastener 28

Handle portion 281

Screw 282

Cathode assembly 30

Second conductive plate 31

Bubbling member 40

Air duct 41

Metal piece 300 to be processed

Electric field E

Magnetic field M

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1 and 3, an electroetching system 200 is provided in an embodiment of the present application, which is configured to form a uniform microporous structure on each surface of a metal part 300 to be processed, where the metal part 300 to be processed has an uneven profile surface such as a groove, a protrusion, or a curved surface. Specifically, the metal piece 300 to be processed may be an aluminum alloy, a titanium alloy, a manganese alloy, a nickel alloy, a steel, a combination of an aluminum alloy and a steel, a combination of a titanium alloy and a steel, a combination of a nickel alloy and a steel, or the like.

Referring to fig. 1, 2 and 3, an electroetching system 200 includes an electroetching apparatus 100, a power source 201, and an electrolyte 202. The electroetching apparatus 100 includes an electrolytic cell 10, an anode assembly 20, and a cathode assembly 30. Electrolyte 202 is contained in electrolytic cell 10, and anode of power supply 201 is connected to anode assembly 20, and cathode of power supply 201 is connected to cathode assembly 30. The metal piece 300 to be processed is immersed in the electrolyte 202, and the metal piece 300 to be processed is electrically connected to the anode assembly 20. In particular operation, the anode assembly 20 and the cathode assembly 30 are formed with an electric field E (see fig. 6), and the metal element (e.g., iron element) on the surface layer of the metal piece 300 to be processed is oxidized on the anode assembly 20 to form metal ions (e.g., iron ions) to be dissolved by the electrolyte 202, so that the surface of the metal piece 300 to be processed can form a microporous structure, and at the same time, anions (e.g., chloride ions) in the electrolyte 202 move substantially linearly in the opposite direction of the electric field E toward the metal piece 300 to be processed and gather near the flat surface of the metal piece 300 to be processed. However, since the direction of anion migration near the surface of the metal piece 300 to be processed is substantially defined by the direction of the electric field E, sufficient anions cannot be timely supplied near the shaped surface (e.g., concave surface, convex surface, or curved surface) of the metal piece 300 to be processed, so that the characteristics of the electrode potential of the shaped surface of the metal piece 300 to be processed are changed, and thus the etching rate or strength of the shaped surface and the flat surface of the metal piece 300 to be processed are differentiated, and a uniform microporous structure cannot be formed on the surface of the metal piece 300 to be processed.

Referring to fig. 1, 2, 3, 4 and 6, the anode assembly 20 includes a first conductive plate 21, an insulating plate 22, an electrical connector 23 and a magnetic assembly 24. The first conductive plate 21 is connected to the positive electrode of the power supply 201. The insulating plate 22 is disposed on one side of the first conductive plate 21, and a plurality of grooves 221 are disposed on one side of the insulating plate 22 side by side at intervals, and the grooves 221 are used for accommodating the metal piece 300 to be etched. The electrical connector 23 is electrically connected between the first conductive plate 21 and the metal piece 300 to be processed. The magnetic assembly 24 is disposed on the insulating plate 22. In particular, when energized, an electric field E is formed between the first conductive plate 21 and the cathode assembly 30, through which the metal piece 300 to be processed passes. A magnetic field M is formed near the magnetic assembly 24 through which the metal piece 300 to be machined also passes. Anions in the electrolyte 202 can be moved to the vicinity of the metal piece 300 to be processed approximately along the spiral track under the combined action of the magnetic field M and the electric field E, and innumerable anions moved along the spiral track are beneficial to reducing the difference of enrichment of the metal piece 300 to be processed on different surfaces (such as a flat surface and a special-shaped surface), improving the uniformity of the concentration of anions on the surface of the metal piece 300 to be processed in any etching process, and forming uniform micropore structures on different surfaces of the metal piece 300 to be processed.

Referring to fig. 3, 4 and 5, in the present embodiment, the magnetic assembly 24 includes a plurality of permanent magnet pieces 241, two adjacent permanent magnet pieces 241 are disposed on opposite sides of each groove 221, and different poles of the two adjacent permanent magnet pieces 241 are disposed opposite to each other, so as to form a uniform magnetic field M on opposite sides of each groove 221. Wherein, the uniform magnetic field M refers to the magnetic field intensity and the magnetic field direction of each part in the magnetic field are the same. Specifically, a plurality of permanent magnet pieces 241 are embedded in the insulating plate 22, the permanent magnet pieces 241 are aluminum iron boron magnets, and the magnetic field M strength is 0.001-10T. It will be appreciated that in other embodiments of the present application, the magnetic assembly 24 may be a soft magnet or an electromagnet or the like.

Referring to fig. 3, 4, and 5, in the present embodiment, the cathode assembly 30 includes a second conductive plate 31 (see fig. 6). The second conductive plate 31 is disposed in parallel with the first conductive plate 21 at a distance therefrom so that a uniform electric field E can be formed between the first conductive plate 21 and the second conductive plate 31 after energization. Wherein, the uniform electric field E refers to the electric field intensity and the electric field direction of each place in the electric field are the same. Specifically, the voltage between the first conductive plate 21 and the second conductive plate 31 is 20 to 60V. By providing a uniform magnetic field M and a uniform electric field E, it is advantageous to adjust the optimum etching conditions (e.g., temperature, electrolyte concentration, etching time, etc.).

Referring to fig. 3, 4 and 5, in the present embodiment, each permanent magnet sheet 241 is disposed substantially perpendicular to the first conductive plate 21 or the second conductive plate 31, so that the uniform magnetic field M and the uniform electric field E are substantially perpendicular, and the movement track of the anions is substantially a circular rotation line, so that the movement range of the anions can be maximally increased, and the concentration difference between the anions near the flat surface and the opposite surface of the metal piece 300 to be processed can be reduced.

Referring to fig. 3, 4 and 5, in the present embodiment, the electrical connector 23 includes a bottom plate 231 and a plurality of elastic contacts 232 extending from the bottom plate 231. The elastic contact 232 passes through the insulating plate 22 and abuts against the metal piece 300 to be processed. Specifically, the elastic contact 232 penetrates from the bottom of the groove 221 and abuts against the metal piece 300 to be processed, so as to electrically connect the metal piece 300 to be processed with the first conductive plate 21.

Referring to fig. 3, 4 and 5, in the present embodiment, the anode assembly 20 further includes a bracket 25 connected to the positive electrode of the power source 201, the first conductive plate 21 further includes a hook 211 connected to the bracket 25, and the hook 211 is electrically connected to the bracket 25, so as to electrically connect the first conductive plate 21 and the positive electrode of the power source 201.

Referring to fig. 3, 4 and 5, in the present embodiment, the number of the first conductive plates 21 is four, and the number of the second conductive plates 31 is two. The two second conductive plates 31 are arranged at intervals, and the four first conductive plates 21 are arranged between the two second conductive plates 31 at intervals side by side, so that the number of metal pieces 300 to be processed in a single process can be increased.

Referring to fig. 3, 4, and 5, in the present embodiment, the anode assembly 20 further includes an insulating base plate 26 and an insulating cover plate 27. An insulating base plate 26 is provided on the side of the first conductive plate 21 facing away from the insulating plate 22. An insulating cover plate 27 is arranged on the side of the insulating plate 22 facing away from the first conductive plate 21. The insulating cover plate 27 covers the plurality of metal pieces 300 to be processed into the grooves 221. Specifically, the anode assembly 20 further includes a fastener 28 including a handle portion 281 and a screw 282 connecting the handle portion 281, the screw 282 penetrating the insulating base plate 26 and the insulating cover plate 27, thereby sandwiching the first conductive plate 21 and the insulating plate 22 between the insulating base plate 26 and the insulating cover plate 27.

Referring to fig. 1, in the present embodiment, the electroetching apparatus 100 further includes a bubbling member 40, the bubbling member 40 includes an air duct 41 and an air compressor (not shown) in communication with the air duct 41, the air compressor is used for producing a high-pressure air flow, one end of the air duct 41 is inserted into the groove 221 and immersed by the electrolyte 202, the air duct 41 is used for introducing the high-pressure air flow into the electrolyte 202, thereby generating bubbles in the electrolyte 202, and the bubbles contribute to uniformity of physicochemical properties of each region of the electrolyte 202, for example, the concentration of each region is the same.

The electroetching system 200 is further described below by way of example of a stainless steel/aluminum composite metal part.

Example 1

A stainless steel/aluminum composite metal member is disposed in the groove 221, and a region of the metal member having a shaped surface is disposed corresponding to the permanent magnet sheet 241 such that the shaped surface passes through a uniform magnetic field having a magnetic field strength of 0.001 to 10T. Next, the first conductive plate 21 provided with the metal member is hung on the bracket 25. Next, the holder 25 is hung on the electrolytic bath 10, and CuCl with a concentration of 1 to 10g/L is injected into the electrolytic bath 10 ₂ Or FeCl ₃ To submerge the metal piece and inserting the second conductive plate 31 into the aqueous solution. Then, the holder 25 and the second conductive plate 31 are energized, respectively, and the voltage of the power supply 201 is controlled to 20 to 60V, and the etching time is 5 to 20 minutes, thereby obtaining a metal member having a microporous structure on the surface. A concave surface of the metal member was observed microscopically, see fig. 7A.

Comparative example 1

Stainless steel/aluminum composite metal part is arranged in the groove 221In this case, the permanent magnet pieces 241 provided on the insulating plate 22 are removed (i.e., there is no magnetic field around the metal member). Next, the first conductive plate 21 provided with the metal member is hung on the bracket 25. Next, the holder 25 is hung on the electrolytic bath 10, and CuCl with a concentration of 1 to 10g/L is injected into the electrolytic bath 10 ₂ Or FeCl ₃ To submerge the metal piece and inserting the second conductive plate 31 into the aqueous solution. Then, the holder 25 and the second conductive plate 31 are energized, respectively, and the voltage of the power supply 201 is controlled to 20 to 60V, and the etching time is 5 to 20 minutes, thereby obtaining a metal member having a microporous structure on the surface. Microscopic observation was carried out on the same concave surface of the metal piece, see fig. 7B.

As can be seen by comparing fig. 7A and 7B, by increasing the magnetic field during etching, the etching density and etching uniformity can be significantly improved, resulting in a uniformly distributed microporous structure.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Finally, it should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present utility model without departing from the spirit and scope of the technical solution of the present utility model.

Claims

1. An electroetching apparatus for etching a surface of a metal article, comprising:

2. The electroetching apparatus according to claim 1, wherein the magnetic assembly comprises a plurality of permanent magnet pieces, adjacent two of the permanent magnet pieces being disposed on opposite sides of each of the grooves, different poles of the adjacent two of the permanent magnet pieces being disposed opposite to each other to form the uniform magnetic field.

3. The electroetching apparatus according to claim 2, wherein the cathode assembly comprises a second conductive plate disposed in opposite parallel with the first conductive plate to form the uniform electric field, each of the permanent magnet pieces being disposed perpendicularly to the first conductive plate or the second conductive plate such that the uniform magnetic field is disposed perpendicularly to the uniform electric field.

4. The electroetching apparatus according to claim 1, wherein the electrical connection member comprises an elastic contact piece penetrating through the insulating plate, one end of the elastic contact piece extending into the recess and abutting the metal member, and the other end of the elastic contact piece abutting the conductive plate.

5. The electroetching apparatus according to claim 1, wherein the anode assembly further comprises a bracket connected to a positive electrode of a power source, the first conductive plate comprising a hanger connected to the bracket, the hanger being electrically connected to the bracket.

6. The electroetching apparatus according to claim 3, wherein the number of the second conductive plates is two, the number of the first conductive plates is at least one, the two second conductive plates are disposed at intervals, and the at least one first conductive plate is disposed between the two second conductive plates.

7. The electroetching apparatus according to claim 1, wherein the anode assembly further comprises:

8. The electroetching apparatus according to claim 7, wherein the cathode assembly further comprises a plurality of fasteners including a handle portion and a screw connecting the handle portion, the screw penetrating the insulating base plate and the insulating cover plate.

9. The electroetching apparatus according to claim 1, further comprising a bubbling member for bubbling the electrolyte in the electrolytic bath.

10. An electroetching system for etching a surface of a metal article, comprising: a power supply, an electrolyte, and an electroetching apparatus according to any one of claims 1 to 9, wherein a positive electrode of the power supply is connected to the anode assembly, a negative electrode is connected to the cathode assembly, and the electrolyte is used to immerse the metal member.