Alkali washing device for removing corroded metal oxide

Abstract

The utility model relates to an alkali washing device for removing corroded metal oxides, which comprises four stages of washing containers, namely a molten alkali liquor crucible (3), a constant-temperature water bath (4), a flowing washing tank (5) and a drying box (6) respectively according to a working sequence, in the device, a sample is arranged on a sample bracket (1), the sample bracket (1) is arranged on a movable bracket (2), and the movable bracket (2) is arranged on the movable bracket (2). The movable bracket (2) and the fourth-stage cleaning container move relatively, so that the samples are moved to a station above the fourth-stage cleaning container according to a working sequence and are lowered into the corresponding cleaning container to be cleaned; and a constant-current power supply (7) is connected between the sample bracket (1) and the molten alkali liquor crucible (3). The device solves the problems of low alkali washing efficiency, alkali liquor splashing and the like of a traditional method through the structural design, the alkali washing efficiency is greatly improved, and the risk of personnel injury is reduced.

Description

Technical Field

[0001] The utility model relates to an alkali washing device for removing metal oxides after corrosion, belonging to the field of metal corrosion test. Background Art

[0002] In the field of metal corrosion testing, after alloy steel, superalloy, and oxidation-resistant coatings corrode under high-temperature or salt spray conditions, corrosion products will adhere to the metal surface, making it difficult to distinguish between the corrosion products and the uncorroded metal matrix. To effectively remove the corrosion products and retain the metal matrix for calculating the corrosion rate and evaluating the corrosion resistance of metal materials or coatings, the alkali electrochemical reduction method is usually used to remove the corrosion products, i.e., metal oxides, by reacting the metal oxides with molten alkali to make the metal oxides fall off from the metal matrix, while the metal matrix basically does not react with the alkali solution, thus retaining the metal matrix.

[0003] The operation of the existing device requires putting the test piece with removed metal oxides into the cleaning tank, connecting a DC power supply, timing with a stopwatch. After the alkali washing reaches the required time, the operator needs to take out the alkali-washed specimen, put it into the water tank for cooling. After cooling is completed, the surface of the specimen is washed with running water, and finally the surface of the specimen is dried with a hair dryer. Due to the limitations of the size of the alkali washing tank and the power of the DC power supply, only one specimen can be alkali-washed at a time, resulting in low efficiency. Moreover, after alkali washing, since the temperature of the residual molten alkali solution adhering to the surface of the specimen is high, alkali solution splashing will occur when it is put into the water tank for cooling, which is extremely likely to scald the operator and poses a safety hazard. Summary of the Invention

[0004] The utility model is precisely designed to address the above-mentioned deficiencies of the existing technology and provides an alkali washing device for removing metal oxides after corrosion, aiming to improve the alkali washing efficiency and ensure the safety of the operator.

[0005] To achieve the above object, the technical solution of the utility model is as follows:

[0006] The alkali washing device for removing metal oxides after corrosion includes four-level cleaning containers, which are, in working order, a molten alkali crucible 3, a constant temperature water bath 4, a flowing cleaning tank 5, and a drying oven 6. In this device, the specimen is installed on a specimen support 1, the specimen support 1 is installed on a moving support 2, and the moving support 2 moves relative to the four-level cleaning containers, so that the specimen moves to the working position above the four-level cleaning containers in working order and descends into the corresponding cleaning container for cleaning operations;

[0007] A constant current power supply 7 is connected between the specimen support 1 and the molten alkali crucible 3.

[0008] During implementation, multiple specimens can be suspended on the specimen support 1.

[0009] During implementation, the moving support 2 includes a slide rail, and the specimen support 1 is installed on the slide rail and moves along the slide rail, enabling the specimen to move in the working sequence.

[0010] During implementation, the moving support 2 includes a central axis, and the specimen support 1 is fixed to the central axis through a cross beam and extends a certain distance. The four-stage cleaning container rotates around the central axis and stops respectively below the specimen support 1 in the working sequence, and then the specimen descends into the corresponding cleaning container for cleaning operations.

[0011] During implementation, the specimen support 1 is installed at the central position of the moving support 2, and the four-stage cleaning containers are arranged around the specimen support 1 and move and stop respectively below the specimen support 1 in the working sequence through the slide rails installed at the bottom, and then the specimen descends into the corresponding cleaning container for cleaning operations.

[0012] In addition, the molten alkali crucible 3 has a structure of an enclosed resistance wire heating furnace and includes a thermocouple and a temperature controller.

[0013] The slide rail support described in the above implementation manner includes a lead screw, a slideway, and a servo motor.

[0014] The features and beneficial effects of the technical solution of the present utility model are as follows:

[0015] 1. In the device of the present utility model, multiple specimens can be suspended on the specimen support 1, and at the same time, the size of the molten alkali crucible 3 is increased and the DC power supply power is increased, so that the original process of alkali cleaning only one specimen at a time is improved to alkali cleaning multiple specimens at a time, effectively solving the problem of low efficiency of the existing process.

[0016] 2. In the device of the present utility model, the constant temperature water bath 4 can heat the specimen by water bath, solving the problems of excessive cooling rate of the specimen caused by water temperature in the existing process, resulting in alkali solution splashing and poor alkali solution cleaning effect.

[0017] 3. In the device of the present utility model, the alkali cleaning time is unified through the control system, solving the problem of poor consistency of the alkali cleaning effect of specimens in the same batch caused by manual timing in the original process.

[0018] 4. In the device of the present utility model, a four-stage automatic cleaning device is set up. The operator only needs to install and fix the specimen on the specimen installation support, set the alkali cleaning parameters, current size, and alkali cleaning time, and the device will automatically complete all processes of electrochemical alkali cleaning, water bath cooling, flow cleaning, and drying according to the set alkali cleaning process. It effectively simplifies the operation process of the operator, greatly improves the alkali cleaning efficiency, and eliminates the risk of operator injury in the original technical solution. Description of the Drawings

[0019] Figure 1Schematic diagram of the structure of Embodiment 1 of the device of the present utility model

[0020] Figure 2 Schematic diagram of the structure of Embodiment 2 of the device of the present utility model

[0021] Figure 3 Schematic diagram of the structure of Embodiment 3 of the device of the present utility model Specific implementation manner

[0022] The device of the present utility model will be further described in detail below in conjunction with the drawings and embodiments:

[0023] Embodiment 1, as shown in the attached Figure 1 figure, the caustic washing device for removing metal oxides after corrosion includes four-stage cleaning containers, which are, in the working order, a molten caustic solution crucible 3, a constant temperature water bath 4, a flowing cleaning tank 5, and a drying oven 6. In this device, the specimen is installed on a specimen support 1, the specimen support 1 is installed on a moving support 2, and the moving support 2 and the four-stage cleaning containers perform relative movement, so that the specimen moves to the working position above the four-stage cleaning containers in the working order and descends into the corresponding cleaning containers for cleaning operations;

[0024] A constant current power supply 7 is connected between the specimen support 1 and the molten caustic solution crucible 3.

[0025] Wherein: the moving support 2 includes a slide rail, and the specimen support 1 is installed on the slide rail and moves along the slide rail, so that the specimen moves in the working order.

[0026] Embodiment 2, as shown in the attached Figure 2 figure, the caustic washing device for removing metal oxides after corrosion includes four-stage cleaning containers, which are, in the working order, a molten caustic solution crucible 3, a constant temperature water bath 4, a flowing cleaning tank 5, and a drying oven 6. In this device, the specimen is installed on a specimen support 1, the specimen support 1 is installed on a moving support 2, and the moving support 2 and the four-stage cleaning containers perform relative movement, so that the specimen moves to the working position above the four-stage cleaning containers in the working order and descends into the corresponding cleaning containers for cleaning operations;

[0027] A constant current power supply 7 is connected between the specimen support 1 and the molten caustic solution crucible 3.

[0028] Wherein, the moving support 2 includes a central axis, the specimen support 1 is fixed on the central axis through a cross beam and extends a certain distance, the four-stage cleaning containers rotate around the central axis, and stop respectively below the specimen support 1 in the working order, and then the specimen descends into the corresponding cleaning containers for cleaning operations.

[0029] Embodiment 3, as shown in the attached Figure 3As shown in the figure, the alkali washing device for removing metal oxides after corrosion includes four-stage cleaning containers, which are, in the working order, a molten alkali crucible 3, a constant temperature water bath 4, a flowing cleaning tank 5, and a drying oven 6. In this device, the specimen is installed on the specimen holder 1, and the specimen holder 1 is installed on the moving bracket 2. The moving bracket 2 and the four-stage cleaning containers move relative to each other, so that the specimen moves to the working position above the four-stage cleaning containers in the working order and descends into the corresponding cleaning container for cleaning operations;

[0030] A constant current power supply 7 is connected between the specimen holder 1 and the molten alkali crucible 3.

[0031] Among them, the specimen holder 1 is installed at the central position of the moving bracket 2. The four-stage cleaning containers are arranged around the specimen holder 1 and move and stop below the specimen holder 1 in the working order through the slide rails installed at the bottom, and then the specimen descends into the corresponding cleaning container for cleaning operations.

[0032] In the above embodiment, the molten alkali crucible 3 is of an enclosed resistance wire heating furnace structure, including a thermocouple and a temperature controller.

[0033] In the above embodiments 1 and 3, the slide rail bracket includes a lead screw, a slideway, and a servo motor.

Claims

1. An alkali washing device for removing metal oxides after corrosion, characterized in that, The device comprises four-stage cleaning containers, which are, in the working sequence, a molten alkali crucible (3), a constant temperature water bath (4), a flowing cleaning tank (5), and a drying oven (6). In this device, a specimen is mounted on a specimen holder (1), the specimen holder (1) is mounted on a moving support (2), and the moving support (2) and the four-stage cleaning containers perform relative movement, so that the specimen is moved to the working position above the four-stage cleaning containers in the working sequence and lowered into the corresponding cleaning container for cleaning operation; A constant current power supply (7) is connected between the specimen holder (1) and the molten alkali crucible (3).

2. The caustic washing device for removing metal oxides after corrosion according to claim 1, characterized in that The moving support (2) comprises a slide rail, and the specimen holder (1) is mounted on the slide rail and moves along the slide rail, so that the specimen moves in the working sequence.

3. The caustic washing device for removing metal oxides after corrosion according to claim 1, characterized in that The moving support (2) comprises a central axis, the specimen holder (1) is fixed to the central axis through a cross beam and extends a certain distance, the four-stage cleaning containers rotate around the central axis and respectively stop below the specimen holder (1) in the working sequence, and then the specimen is lowered into the corresponding cleaning container for cleaning operation.

4. The caustic washing device for removing metal oxides after corrosion according to claim 1, characterized in that, The specimen holder (1) is mounted at the central position of the moving support (2), the four-stage cleaning containers are arranged around the specimen holder (1), and respectively move and stop below the specimen holder (1) in the working sequence through the slide rails mounted at the bottom, and then the specimen is lowered into the corresponding cleaning container for cleaning operation.

5. The caustic washing device for removing metal oxides after corrosion according to claim 1, characterized in that, The molten alkali crucible (3) has a structure of an enclosed resistance wire heating furnace and comprises a thermocouple and a temperature controller.

6. The caustic washing device for removing metal oxides after corrosion according to claim 2 or 4, characterized in that, The specimen holder (1) comprises a lead screw, a slideway, and a servo motor.

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