CN218621118U - Anode and cathode device for on-site metallographic electrolytic corrosion - Google Patents
Anode and cathode device for on-site metallographic electrolytic corrosion Download PDFInfo
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- CN218621118U CN218621118U CN202222362026.3U CN202222362026U CN218621118U CN 218621118 U CN218621118 U CN 218621118U CN 202222362026 U CN202222362026 U CN 202222362026U CN 218621118 U CN218621118 U CN 218621118U
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Abstract
The utility model belongs to the technical field of electrolytic corrosion, and provides an anode and cathode device for on-site metallographic electrolytic corrosion, which comprises a power supply, a cathode component and an anode component; the anode assembly is electrically connected with the positive electrode of the power supply; the cathode component comprises a cathode piece and a reaction vessel, the cathode piece is electrically connected with the negative electrode of the power supply, electrolytic corrosion acid paste is arranged in the reaction vessel, and the cathode piece is arranged in the reaction vessel and always contacts with the electrolytic corrosion acid paste. The utility model discloses combine the use of electrolytic corrosion acid cream, guarantee under the cooperation of device that the electrolytic corrosion acid cream and the work piece detect the area of contact between the face invariable all the time and effective to be favorable to acquireing good electrolytic corrosion effect, so that carry out metallographic structure observation and analysis to the work piece.
Description
Technical Field
The utility model belongs to the technical field of electrolytic corrosion, concretely relates to anode and cathode device of on-spot metallography electrolytic corrosion.
Background
The metallographic electrolytic corrosion is to carry out electrolytic corrosion on a detection sample by utilizing an electrochemical principle so as to observe and analyze the tissue morphology of the detection sample under a microscope. At present, the cathode of a metallographic electrolytic corrosion instrument used in the prior art is generally a metal plate, the anode is connected to a sample by a clamp, the sample and the cathode metal plate are placed in an electrolytic bath in the electrolytic corrosion process, and the electrolytic corrosion of the sample is realized after the electrolytic corrosion is carried out. However, such cathode-anode devices cannot be metallographically tested on large workpieces in the field. In order to adapt to a metallographic test of a large-sized workpiece on site, a simple anode-cathode device suitable for the metallographic test of the large-sized workpiece on site appears in the prior art, absorbent cotton is arranged on a cathode, and the absorbent cotton is used for absorbing and storing electrolyte, so that the electrolyte can be fully contacted with a detection surface of the large-sized workpiece; furthermore, absorbent cotton is easily corroded by an electrolyte, becomes fragile and is decomposed by festering, and such an anode-cathode device has disadvantages that the kind of the electrolyte cannot be changed, and the electrolytic corrosion effect is not uniform.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, the utility model aims to provide an anode-cathode device for on-site metallographic electrolytic corrosion, which has simple and convenient operation and good repeatability and is particularly suitable for on-site metallographic tests of large-sized workpieces.
The utility model provides a technical scheme that its technical problem adopted is:
an anode and cathode device for on-site metallographic electrolytic corrosion comprises a power supply, a cathode assembly and an anode assembly; the anode assembly is electrically connected with the positive electrode of the power supply; the cathode assembly comprises a cathode piece and a reaction vessel used for carrying out electrolytic corrosion reaction, the cathode piece is electrically connected with the negative electrode of the power supply, electrolytic corrosion acid paste is arranged in the reaction vessel, and the cathode piece is arranged in the reaction vessel and always in contact with the electrolytic corrosion acid paste.
Preferably, the cathode assembly further comprises a push rod; a through hole for the push rod to pass through is formed in the end face of the reaction vessel; one end of the push rod is connected with the cathode piece, and the other end of the push rod is connected with the negative electrode of the power supply through a lead; and a pressing piece is arranged on the push rod, is larger than the through hole and is tightly attached to the outer side of the end face of the reaction vessel.
Preferably, the push rod is provided with a threaded structure, the pressing piece is a nut, and the nut is matched and connected with the threaded structure on the push rod.
Preferably, the cathode assembly further comprises a gasket, and the gasket is arranged on the push rod in a penetrating mode and located between the pressing piece and the outer side of the end face of the reaction vessel.
Preferably, the cathode member is arranged in a sheet structure and is larger than the through hole on the reaction vessel.
Preferably, the reaction vessel is made of a material having elasticity, such as rubber, silica gel, or the like.
Preferably, the anode assembly includes an upper anode portion and a lower anode portion, the upper anode portion is provided on the lower anode portion, and the upper anode portion is lighter in weight than the lower anode portion.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses combine the use of electrolytic corrosion acid cream, guarantee under the cooperation of device that the contact area between electrolytic corrosion acid cream and the work piece detection face is invariable all the time and effective to avoided flowing electrolyte to the pollution of product work piece and to measurement personnel's injury, thereby be favorable to acquireing good electrolytic corrosion effect, improved experimental security, so that carry out metallographic structure observation and analysis to the work piece. And simultaneously, the utility model discloses an anode assembly and negative pole subassembly simple structure, small in size, easy and simple to handle and good repeatability are favorable to improving on-the-spot electrolytic corrosion test's efficiency, have effectively solved the defect that exists among the prior art.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic three-dimensional structure diagram of an anode-cathode device for on-site metallographic electrolytic corrosion of the present invention.
FIG. 2 is a structural morphology diagram obtained after an electrolytic corrosion test is carried out on the anode-cathode device for on-site metallographic electrolytic corrosion by adopting the utility model.
Wherein:
1-power supply, 2-upper anode part, 3-lower anode part, 4-pressing part, 5-gasket, 6-cathode part, 7-reaction vessel and 8-push rod.
Detailed Description
In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in detail with reference to the accompanying drawings and detailed description. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, and the described embodiments are merely some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Example 1
Referring to fig. 1, the present embodiment discloses an anode-cathode apparatus for on-site metallographic electrolytic corrosion, which includes a power supply 1, a cathode assembly and an anode assembly, wherein the power supply 1 of the present embodiment employs a dc power supply 1. The anode assembly is electrically connected with the anode of the power supply 1; the cathode assembly comprises a cathode piece 6 and a reaction vessel 7 used for carrying out electrolytic corrosion reaction, wherein the cathode piece 6 is electrically connected with the negative electrode of the power supply 1, electrolytic corrosion acid paste is arranged in the reaction vessel 7, and the cathode piece 6 is arranged in the reaction vessel 7 and always contacts with the electrolytic corrosion acid paste. The cathode assembly further comprises a push rod 8; a through hole for the push rod 8 to pass through is formed in the end face of the reaction vessel 7; one end of the push rod 8 is connected with the cathode piece 6, and the other end of the push rod 8 is connected with the cathode of the power supply 1 through a lead; and a pressing piece 4 is arranged on the push rod 8, and the pressing piece 4 is larger than the through hole and is tightly attached to the outer side of the end face of the reaction vessel 7.
During an electrolytic corrosion test, the anode assembly is placed on a large workpiece, and the anode assembly is contacted with the large workpiece; fully filling electrolytic corrosion acid paste in the reaction vessel 7, and reversely buckling the reaction vessel 7 on the detection surface of the large-sized workpiece to ensure that the electrolytic corrosion acid paste is fully contacted with the detection surface of the large-sized workpiece; then, the push rod 8 is prompted to move towards one side of the inner part of the reaction vessel 7 manually or by a bracket and the like, and the cathode piece 6 in the reaction vessel 7 is always kept in contact with the electrolytic corrosion acid paste by combining the pressing action of the pressing piece 4 on the outer side of the end face of the reaction vessel 7, and meanwhile, the electrolytic corrosion acid paste is pressed on the detection surface by the reaction vessel 7, so that the electrolytic corrosion acid paste is fully contacted with the detection surface; then, the power supply 1 is turned on to perform on-site electrolytic corrosion on the detection surface of the large workpiece.
Referring to fig. 1, further, a thread structure is disposed on the push rod 8 of this embodiment, and the pressing member 4 is a nut, and the nut is connected with the thread structure on the push rod 8 in a matching manner. Specifically, the push rod 8 of the present embodiment may be made of a stainless steel threaded rod, specifically, 316 stainless steel material with a diameter of 6 × 40mm; the nut is matched and screwed on the stainless steel threaded rod. By adopting the push rod 8 and the pressing piece 4, the flexibility is good, the assembly and the adjustment are convenient, the nut position can be adjusted by screwing the nut, and the nut can be quickly adjusted to the outer end surface of the reaction vessel 7; in addition, by properly tightening the nut, the cathode member 6 in the reaction cuvette 7 is advantageously locked on the inner end surface of the reaction cuvette 7, so that the cathode member 6 is tightly attached to the inner wall of the reaction cuvette 7. Preferably, a gasket 5 is further arranged on the push rod 8 in a penetrating manner, and the gasket 5 is located between the pressing member 4 and the outer side of the end face of the reaction cuvette 7.
Referring to fig. 1, the cathode member 6 is disposed in a sheet structure and is larger than the through hole of the reaction cuvette 7. In this embodiment, the end of the push rod 8 is fixed to the center of the cathode member 6 by welding.
The reaction vessel 7 may be made of elastic material, such as rubber, silica gel, etc.; further, the reaction cuvette 7 is cylindrically arranged. The reaction vessel 7 has certain elasticity so as to be matched with the push rod 8 and deform when the push rod 8 is pressed down, so that the electrolytic corrosion acid paste is pressed down to be tightly attached to the detection surface of the large workpiece, and the electrolytic corrosion test is ensured to be completed smoothly.
Referring to fig. 1, the anode assembly includes an upper anode part 2 and a lower anode part 3, the upper anode part 2 is disposed on the lower anode part 3, and the upper anode part 2 has a lighter weight than the lower anode part 3; the anode assembly of this embodiment may optionally be made of a conductive metal having corrosion resistant properties, such as 316 stainless steel. Specifically, the anode assembly in the present embodiment is disposed in an inverted "T" shape, and of course, is disposed in other shapes, such as a square shape, a triangular shape, etc.; the structural weight distribution of the anode assembly is light from top to bottom, which is beneficial to improving the stability. In addition, a sticker can be arranged at the bottom of the lower anode part 3, or elements with sticking and adsorbing effects such as a magnet and the like can be arranged on the lower anode part 3, so that the anode assembly can be conveniently fixed on a workpiece.
The embodiment also discloses a using method of the anode-cathode device for on-site metallographic electrolytic corrosion, which comprises the following steps:
(1) Assembling a cathode assembly;
a push rod 8 is arranged in a through hole of a reaction vessel 7 in a penetrating mode, a nut and a gasket 5 are arranged on the push rod 8, the position of the nut is adjusted through screwing, a cathode piece 6 on the end portion of the push rod 8 is attached to the inner end face of the reaction vessel 7, and the nut is attached to the outer end face of the reaction vessel 7;
electrolytic corrosion acid paste is filled in the reaction vessel 7 and is in contact with the cathode piece 6;
the end part of the push rod 8 is connected with the negative pole of the power supply 1 through a lead;
(2) Assembling an anode assembly;
the anode assembly is connected with the anode of the power supply 1 through a lead;
(3) Preparing an electrolytic corrosion test technology;
placing the anode assembly on a large workpiece to be tested, and enabling the anode assembly to be in contact with the large workpiece to be tested;
inverting the reaction vessel 7 of the cathode assembly on the detection surface of the large workpiece to be tested, and contacting electrolytic corrosion acid paste in the reaction vessel 7 with the detection surface;
pressing a push rod 8 to enable the electrolytic corrosion acid paste in the reaction vessel 7 to be in full contact with the detection surface;
(4) Electrolytic corrosion test;
turning on a power supply 1, wherein the voltage is 6-8V, the current is 3-4A, and the electrolysis time is 30-60s; and reacting the detection surface of the large workpiece to be tested with the electrolytic corrosion acid paste to perform an electrolytic corrosion test.
In order to improve the effect and quality of the on-site electrolytic corrosion test, the detection surface of a large workpiece needs to be pretreated before the electrolytic corrosion test is carried out; after the pretreatment process is completed, the reaction vessel 7 of the cathode assembly is placed upside down on the detection surface. Wherein the pretreatment comprises the following steps:
(a) Carrying out coarse grinding and fine grinding on the detection surface by using abrasive paper;
(b) Polishing the detection surface; specifically, mechanical polishing may be performed with a diamond spray;
(c) Cleaning the detection surface; specifically, the test surface can be cleaned with an absolute alcohol cotton ball.
In addition, in order to conveniently observe the detection surface by a metallographic microscope, after the electrolytic corrosion processing is finished, the detection surface needs to be subjected to post-treatment; wherein the post-treatment comprises the following steps:
(i) Cleaning the detection surface after electrolytic corrosion; when cleaning, cleaning the detection surface by using a pure water cotton ball and an absolute ethyl alcohol cotton ball in sequence, and cleaning impurities on the surface of the detection surface;
(ii) And drying the cleaned detection surface.
The anode and cathode device for on-site metallographic electrolytic corrosion of the embodiment is used for on-site electrolytic corrosion test, so that the contact area between the electrolytic corrosion acid paste and the detection surface of the workpiece is always constant and effective, and a good electrolytic corrosion effect is obtained, and the workpiece is subjected to metallographic structure observation and analysis. As shown in fig. 2, by using the anode-cathode device of this embodiment and performing an electrolytic corrosion test in combination with an electrolytic corrosion acid paste, a clear tissue morphology map with good corrosion effect can be obtained.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made by the technical essence of the present invention to the above embodiments do not depart from the technical solution of the present invention, and still fall within the scope of the technical solution of the present invention.
Claims (7)
1. An anode and cathode device for on-site metallographic electrolytic corrosion is characterized by comprising a power supply, a cathode assembly and an anode assembly; the anode assembly is electrically connected with the anode of the power supply; the cathode assembly comprises a cathode piece and a reaction vessel used for carrying out electrolytic corrosion reaction, the cathode piece is electrically connected with the negative electrode of the power supply, electrolytic corrosion acid paste is arranged in the reaction vessel, and the cathode piece is arranged in the reaction vessel and always in contact with the electrolytic corrosion acid paste.
2. The in situ metallurgical electrolytic corrosion anode-cathode assembly of claim 1, wherein said cathode assembly further comprises a push rod; a through hole for the push rod to pass through is formed in the end face of the reaction vessel; one end of the push rod is connected with the cathode piece, and the other end of the push rod is connected with the negative electrode of the power supply through a lead; and a pressing piece is arranged on the push rod, is larger than the through hole and is tightly attached to the outer side of the end face of the reaction vessel.
3. The on-site metallographic electrolytic corrosion anode-cathode device according to claim 2, wherein a threaded structure is provided on said push rod, said pressing member is a nut, and said nut is in fit connection with said threaded structure on said push rod.
4. The anode-cathode device for on-site metallographic electrolytic corrosion according to claim 3, wherein said cathode assembly further comprises a gasket disposed on said push rod and located between said pressing member and the outside of the end face of said reaction vessel.
5. The anodic cathodic device for metallographic electrolytic corrosion according to any one of claims 1 to 4, wherein said cathodic member is provided in a sheet-like structure and is larger than the through hole of said reaction vessel.
6. An in-situ metallurgical electrowinning anode-cathode assembly according to any one of claims 1 to 4, wherein said reaction vessel is made of a resilient material.
7. The on-site metallographic electrolytic corrosion anode-cathode arrangement according to any one of claims 1 to 4, wherein said anode assembly comprises an upper anode portion and a lower anode portion, said upper anode portion being disposed on said lower anode portion and said upper anode portion being lighter in weight than said lower anode portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222362026.3U CN218621118U (en) | 2022-09-05 | 2022-09-05 | Anode and cathode device for on-site metallographic electrolytic corrosion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222362026.3U CN218621118U (en) | 2022-09-05 | 2022-09-05 | Anode and cathode device for on-site metallographic electrolytic corrosion |
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| Publication Number | Publication Date |
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| CN218621118U true CN218621118U (en) | 2023-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222362026.3U Active CN218621118U (en) | 2022-09-05 | 2022-09-05 | Anode and cathode device for on-site metallographic electrolytic corrosion |
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| CN (1) | CN218621118U (en) |
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- 2022-09-05 CN CN202222362026.3U patent/CN218621118U/en active Active
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