Corrosion device suitable for metallographic inspection in severe environment and use method

Abstract

The invention discloses a corrosion device suitable for metallographic inspection in a severe environment and a use method, relates to the technical field of metallographic inspection, and solves the problem that a field environment has great influence on a metallographic corrosion process and a corrosion effect. The device comprises an isolation layer, a breathable layer, a heating reagent layer, an isolation bonding layer and a corrosive agent adsorption layer, the breathable layer, the heating reagent layer, the isolation bonding layer and the corrosive agent adsorption layer are sequentially connected from bottom to top, and the breathable layer and the heating reagent layer are coated with the isolation layer; the corrosion device is packaged in a sealing bag, and the corrosion device is protected when not in use. The corrosion device for metallographic inspection can automatically heat, the corrosive agent does not flow, and the corrosion device has self-adhesion, can be firmly attached to the metal surface and has the advantages of being capable of adapting to the severe field environment, convenient to carry, easy to operate, safe and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of metallographic inspection, in particular to a corrosion device suitable for metallographic inspection in harsh environments and a use method thereof. Background Art

[0002] Metallographic etching is a core method for revealing microstructures in metallographic examinations, and its quality directly impacts the results of metallographic analysis. When etching specimens in the laboratory, they are typically immersed in an etchant or wiped with absorbent cotton soaked in the etchant. A stable laboratory environment with constant humidity, temperature, and no drafts provides optimal metallographic etching results.

[0003] During on-site metallography, the on-site environment significantly impacts the metallographic corrosion process and results. For example, limited operating space prevents sufficient etching of the metal sample surface. Low ambient temperature and low etchant activity result in insufficient erosion of the metal sample surface, making it impossible to reveal the metallographic structure. High on-site wind speeds can easily blow the etchant onto the operator or other equipment, causing corrosion damage. Summary of the Invention

[0004] To address the aforementioned issue of the significant impact of the on-site environment on the metallographic etching process and corrosion effects, the present invention proposes a metallographic etching device and method for use suitable for harsh environments. The metallographic etching device of the present invention is self-heating, prevents the etching agent from flowing, and exhibits self-adhesive properties, allowing it to firmly adhere to metal surfaces. It offers advantages such as adaptability to harsh on-site environments, portability, ease of operation, and safety.

[0005] The present invention proposes a corrosion device and a method of use suitable for metallographic inspection in harsh environments, which specifically includes an isolation layer, a breathable layer, a heating reagent layer, an isolation bonding layer and a corrosive agent adsorption layer. The breathable layer, the heating reagent layer, the isolation bonding layer and the corrosive agent adsorption layer are connected in sequence from bottom to top, and the breathable layer and the heating reagent layer are coated with an isolation layer on the outside.

[0006] Furthermore, the corrosive agent adsorption layer is arranged at the center of the upper surface of the isolation and bonding layer, and the area of ​​the corrosive agent adsorption layer is smaller than that of the isolation and bonding layer.

[0007] Furthermore, it also includes a sealed bag, in which the corrosion device is packaged.

[0008] Furthermore, the exothermic reagent in the exothermic reagent layer is a mixture of iron powder and activated carbon.

[0009] Furthermore, the corrosive agent adsorption layer is a medical polyvinyl alcohol sponge.

[0010] A method for using the above-mentioned corrosion device for metallographic inspection in harsh environments comprises the following steps: Open the sealed bag, tear off the isolation layer, let the air pass through the breathable layer, and react with the heating reagent to generate heat; drop the corrosive agent on the corrosive agent adsorption layer, and adhere the isolation adhesive layer to the metal surface to be corroded.

[0011] The beneficial effects of the corrosion device and method of use suitable for metallographic inspection in harsh environments described in the present invention are: (1) The present invention relates to a corrosion device and a method for use in metallographic inspection in harsh environments. The heat-generating reagent layer can provide heat during the process of the corrosive agent corroding the metal surface, thereby ensuring the activity of the corrosive agent. The air-permeable layer can ensure that the heat-generating reagent can come into contact with the air without leaking the heat-generating reagent. The isolation layer can isolate the air to prevent the heat-generating reagent from reacting with the air in advance.

[0012] (2) The present invention relates to a corrosion device and a method for use suitable for metallographic inspection in harsh environments. The corrosive agent adsorption layer is fixed to the metal surface through an isolating adhesive layer to prevent the device from falling off and ensure that the corrosive agent is in full contact with the metal surface. At the same time, the corrosive agent is isolated from the external environment to improve safety.

[0013] (3) The present invention relates to a corrosion device and a method for use suitable for metallographic inspection in harsh environments. The corrosion device is encapsulated in a sealing bag to protect the device when not in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0015] In the attached figure: Figure 1 It is a cross-sectional view of a corrosion device suitable for metallographic inspection in harsh environments according to the present invention; Figure 2 It is a top view of a corrosion device suitable for metallographic inspection in harsh environments according to the present invention; Among them: 1-sealing bag, 2-isolating layer, 3-breathable layer, 4-heating reagent layer, 5-isolating adhesive layer, 6-corrosive agent adsorption layer. DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0017] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0019] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0020] Specific implementation method 1: See Figure 1-Figure 2 The present embodiment is described in detail. The etching device for metallographic inspection in harsh environments described in this embodiment specifically comprises a sealing bag 1, an isolation layer 2, a breathable layer 3, a heating reagent layer 4, an isolation adhesive layer 5, and a corrosive adsorption layer 6. The breathable layer 3, heating reagent layer 4, isolation adhesive layer 5, and corrosive adsorption layer 6 are sequentially connected from bottom to top. The breathable layer 3 and heating reagent layer 4 are externally coated with an isolation layer 2, which isolates the air from the air to prevent the heating reagent from reacting with the air prematurely. The etching device is encapsulated in the sealing bag 1 to protect the device when not in use.

[0021] The corrosive agent adsorption layer 6 is arranged at the center of the upper surface of the isolation bonding layer 5. The upper surface area of ​​the corrosive agent adsorption layer 6 is smaller than that of the isolation bonding layer 5. The exposed parts around the isolation bonding layer 5 are adhered to the metal surface to fix the corrosive agent adsorption layer 6.

[0022] The exothermic reagent in the exothermic reagent layer 4 is a mixture of iron powder and activated carbon. The corrosive agent adsorption layer 6 is a medical polyvinyl alcohol sponge.

[0023] A method for using the above-mentioned corrosion device for metallographic inspection in harsh environments comprises the following steps: When metallographic examinations require etching of a metal surface, the sealed bag 1 is opened, the isolation layer 2 is removed, and air is allowed to pass through the breathable layer 3, where it reacts with the exothermic reagent 4 to generate heat. An appropriate amount of etchant is then dripped onto the etchant adsorption layer 6, and the isolation adhesive layer 5 is adhered to the metal surface to be etched. While the etchant adsorption layer 6 is etching the metal surface, the exothermic reagent 4 continuously provides heat, increasing the corrosion reaction rate and achieving optimal etching results. The isolation adhesive layer 5 isolates the etchant from the external environment, enhancing safety.

[0024] To summarize the above implementation cases, the present invention relates to a corrosion device and a method for use for metallographic inspection in harsh environments. The heat-generating reagent layer 4 provided can provide heat during the corrosion process of the metal surface by the corrosive agent, thereby ensuring the activity of the corrosive agent; the breathable layer 3 is provided to ensure that the heat-generating reagent can come into contact with the air while preventing the heat-generating reagent from leaking; and the isolation layer 2 is provided to isolate the air to prevent the heat-generating reagent from reacting with the air in advance. The present invention relates to a corrosion device and a method for use for metallographic inspection in harsh environments. The isolation adhesive layer 5 fixes the corrosive agent adsorption layer 6 to the metal surface to prevent the device from falling off, and ensures that the corrosive agent is in full contact with the metal surface. At the same time, the corrosive agent is isolated from the external environment to improve safety. The present invention relates to a corrosion device and a method for use for metallographic inspection in harsh environments. The sealing bag 1 provided to encapsulate the corrosion device protects the device when not in use.

[0025] The specific embodiments described above further illustrate the objectives, technical solutions, and beneficial effects of the present invention. It should be understood that the above description is merely a specific embodiment of the present invention and is not intended to limit the invention. Reasonable combinations of the features described in the above embodiments are also possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A corrosion device suitable for metallographic inspection in harsh environments, characterized by: The invention comprises an isolation layer (2), a breathable layer (3), a heating reagent layer (4), an isolation adhesive layer (5) and a corrosive agent adsorption layer (6), wherein the breathable layer (3), the heating reagent layer (4), the isolation adhesive layer (5) and the corrosive agent adsorption layer (6) are sequentially connected from bottom to top, and the breathable layer (3) and the heating reagent layer (4) are externally coated with the isolation layer (2).

2. The corrosion device for metallographic inspection in harsh environments according to claim 1, characterized in that: The corrosive agent adsorption layer (6) is arranged at the center of the upper surface of the isolation bonding layer (5), and the area of ​​the corrosive agent adsorption layer (6) is smaller than that of the isolation bonding layer (5).

3. The corrosion device for metallographic inspection in harsh environments according to claim 2, characterized in that: It also includes a sealed bag (1), in which the corrosion device is encapsulated.

4. The corrosion device for metallographic inspection in harsh environments according to claim 1, characterized in that: The exothermic reagent in the exothermic reagent layer (4) is a mixture of iron powder and activated carbon.

5. The corrosion device for metallographic inspection in harsh environments according to claim 1, characterized in that: The corrosive agent adsorption layer (6) is a medical polyvinyl alcohol sponge.

6. A method for using the etching device for metallographic inspection in harsh environments according to claim 3, characterized in that: The following steps are involved: Open the sealed bag (1), tear off the isolation layer (2), and allow air to pass through the breathable layer (3), where it reacts with the heating agent (4) to generate heat. Drop the corrosive agent onto the corrosive agent adsorption layer (6), and adhere the isolation adhesive layer (5) to the metal surface to be corroded.

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