Electrolytic removal device for oxide skin of stainless steel bar

Abstract

The utility model relates to the technical field of metal material treatment, in particular to a stainless steel bar oxide skin electrolytic removal device which comprises an electrolytic bath and an electrolyte circulating component, the electrolytic bath is used for containing electrolyte; the electrolyte circulating assembly comprises a cathode support and a plurality of circulating pumps, a plurality of cathode sleeves in the vertical direction are arranged on the cathode support, a tank cover is arranged above the electrolytic tank, and mounting through holes are formed in the tank cover in the direction corresponding to the cathode sleeves; and the stainless steel bar passes through the mounting through hole and is suspended in the cathode sleeve. The electrolytic removal device for the oxide skin of the stainless steel bar has the beneficial effects that one end of the stainless steel bar is clamped and fixed by the anode of the power supply, and the other end of the stainless steel bar penetrates through the mounting through hole and is suspended in the cathode sleeve. The stainless steel bar is convenient to mount and take out, and related parameters can be obtained by adjusting different voltages and currents and observing the removal condition of the oxide skin of the stainless steel bar.

Description

Technical Field

[0001] The utility model relates to the technical field of metal material treatment, in particular to an electrolytic removal device for oxide scale of stainless steel bars. Background Technique

[0002] Oxide scale is a corrosion product formed by the oxidation of steel at high temperatures, and is composed of ferrous oxide, magnetite, and ferric oxide. The oxide scale is brittle and has no extensibility, and is very easy to crack and break off under mechanical action and hot working action.

[0003] The generation of oxide scale will not only cause a large loss of steel, but also cause many adverse consequences, mainly including: 1. The oxide scale makes the surface of the forging rough. If the oxide scale is pressed into the forging during forging, it will seriously become a waste product; 2. Removing the oxide scale requires adding some additional auxiliary processes and equipment; 3. The oxide scale has a high hardness, which not only increases the consumption of deformation energy during forging, but also accelerates the wear of the forging die and reduces the service life. In order to improve the processing quality of workpieces, it is necessary to remove the oxide scale on the surface. At present, the following methods are mainly used to remove stainless steel oxide scale at home and abroad:

[0004] 1. Physical and mechanical methods, mainly by using power to make the medium generate friction with the stainless steel surface, such as sandblasting, etc.; this method has a simple process, but this single physical and mechanical treatment method has problems such as low treatment efficiency, poor treatment flatness at the corners of workpieces, and for thin plates.

[0005] 2. Chemical methods, mainly by generating chemical reactions between pickling and the stainless steel surface; this method takes a long time, generates a large amount of nitrogen oxides, has a great harm to the environment, and the pickling is not sufficient resulting in oxide scale residues, and over-corrosion will cause loss of the surface flatness of the workpiece; in addition, due to the poor uniformity of the distribution of active centers on the workpiece surface, it is very difficult to detect the processing quality only by the naked eye, resulting in poor quality stability of pickled workpieces.

[0006] In recent years, people have begun to shift their attention to the electrolytic method for removing oxide scale. However, when electrolytically removing oxide scale from different batches of stainless steel bars, the relevant treatment process parameters such as current density and treatment time are different, resulting in uncertain and mismatched process parameters when removing stainless steel oxide scale in large quantities, which restricts the improvement of production efficiency. Content of the Utility Model

[0007] The technical problem to be solved by the utility model is to provide an electrolytic removal device for oxide scale of stainless steel bars that can efficiently obtain electrolytic removal data of stainless steel oxide scale.

[0008] To solve the above technical problems, the technical solution adopted by the present utility model is: to provide a device for electrolytic removal of oxide scale on stainless steel strips, including an electrolytic cell and an electrolyte circulation component; the electrolytic cell is used for containing the electrolyte;

[0009] The electrolyte circulation component includes a cathode support and a plurality of circulation components;

[0010] The circulation component includes a circulation pump and a circulation pipeline. The circulation pump is arranged outside the electrolytic cell. The circulation pipeline includes a first circulation pipeline and a second circulation pipeline;

[0011] One end of the first circulation pipeline is connected to the input end of the circulation pump, and the other end extends through the side wall of the electrolytic cell into the electrolytic cell as the liquid outlet end; a plurality of vertical cathode sleeves are arranged on the cathode support, and the liquid outlet end of the first circulation pipeline is communicated with the bottom pipeline of one cathode sleeve;

[0012] One end of the second circulation pipeline is connected to the input end of the circulation pump, and the other end extends through the side wall of the electrolytic cell into the electrolytic cell as the liquid inlet end;

[0013] A tank cover is arranged above the electrolytic cell, and installation through holes are arranged on the tank cover corresponding to the direction of the cathode sleeves;

[0014] The stainless steel strip passes through the installation through hole and is suspended in the cathode sleeve.

[0015] Further, in the above device for electrolytic removal of oxide scale on stainless steel strips, an insulating guide cover is arranged at the top of the cathode sleeve. A guide hole is arranged in the central axis direction of the insulating guide cover. The stainless steel strip passes through the guide hole and extends into the cathode sleeve. The top of the insulating guide cover is recessed into a circular truncated cone-shaped groove.

[0016] Further, in the above device for electrolytic removal of oxide scale on stainless steel strips, the insulating guide cover is threadedly connected to the upper end of the cathode sleeve.

[0017] Further, in the above device for electrolytic removal of oxide scale on stainless steel strips, the number of circulation pumps is 3, the number of cathode sleeves is 3, and the number of installation through holes is 3.

[0018] Further, in the above device for electrolytic removal of oxide scale on stainless steel strips, a valve is arranged at one end of the first circulation pipeline connected to the input end of the circulation pump.

[0019] Further, in the above device for electrolytic removal of oxide scale on stainless steel strips, a V-shaped groove is arranged at the bottom of the electrolytic cell, and a drain pipe is connected to the bottom of the V-shaped groove.

[0020] The beneficial effects of the present utility model are as follows: When the electrolytic removal device for the oxide scale of the stainless steel strip of the present utility model is in use, one end of the stainless steel strip can be clamped and fixed by the anode of the power supply, and the other end passes through the installation through-hole and hangs in the cathode sleeve, so that the installation and removal of the stainless steel strip are convenient. A circulation pump is provided to make the electrolyte contact the stainless steel strip more fully, shorten the reaction time, and improve the test efficiency. The circulation component is also provided to save the electrolyte, and the electrolyte only needs to cover the liquid inlet end of the second circulation pipeline. Moreover, the electrolyte circulates and flushes the stainless steel strip, which is also beneficial to the reaction between the electrolyte and the stainless steel strip. During the test, different voltages and currents are adjusted, and the stainless steel strip is taken out at a certain period to observe the removal situation of the oxide scale on the stainless steel strip, and then relevant parameters can be obtained. During formal production, the parameters obtained from the test can be referred to determine the most suitable batch production parameters, thereby improving the production efficiency. This application can conveniently test the electrolysis of multiple stainless steel strips with oxide scales at the same time, with simple operation and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the electrolytic removal device for the oxide scale of the stainless steel strip in the specific embodiment of the present utility model;

[0022] Figure 2 is a schematic structural diagram of the electrolytic removal device for the oxide scale of the stainless steel strip in the specific embodiment of the present utility model;

[0023] Label Description:

[0024] 1. Cathode support; 2. Circulation pump; 3. Circulation pipeline; 4. Cathode sleeve; 5. Tank cover; 6. Installation through-hole; 7. Insulating guide cover; 8. Valve. SPECIFIC EMBODIMENTS

[0025] To describe in detail the technical content, achieved objectives and effects of the present utility model, the following is described in conjunction with the embodiments and with reference to the accompanying drawings.

[0026] Please refer to From Figure 1 to Figure 2 , the present utility model provides an electrolytic removal device for the oxide scale of a stainless steel strip, including an electrolytic cell and an electrolyte circulation component; the electrolytic cell is used for containing the electrolyte;

[0027] The electrolyte circulation component includes a cathode support 1 and a plurality of circulation parts;

[0028] The circulation part includes a circulation pump 2 and a circulation pipeline 3, the circulation pump is arranged outside the electrolytic cell, and the circulation pipeline 3 includes a first circulation pipeline and a second circulation pipeline;

[0029] One end of the first circulation pipeline is connected to the input end of the circulation pump 2, and the other end passes through the side wall of the electrolytic cell and extends into the electrolytic cell to be the liquid outlet end; a plurality of vertical cathode sleeves 4 are provided on the cathode bracket 1, and the liquid outlet end of the first circulation pipeline is communicated with the bottom pipeline of one cathode sleeve 4;

[0030] One end of the second circulation pipeline is connected to the input end of the circulation pump 2, and the other end passes through the side wall of the electrolytic cell and extends into the electrolytic cell to be the liquid inlet end;

[0031] A cell cover 5 is provided above the electrolytic cell, and an installation through hole 6 is provided on the cell cover 5 corresponding to the direction of the cathode sleeve 4.

[0032] The stainless steel strip passes through the installation through hole 6 and hangs in the cathode sleeve 4.

[0033] The beneficial effects of the present utility model are as follows: In the stainless steel strip oxide scale electrolytic removal device of the present utility model, one end of the stainless steel strip can be clamped and fixed by the anode of the power supply, and the other end passes through the installation through hole 6 and hangs in the cathode sleeve 4, so that the installation and removal of the stainless steel strip are convenient. The circulation pump 2 is provided to make the electrolyte contact the stainless steel strip more fully, shorten the reaction time, and improve the test efficiency. The circulation component is also provided to save the electrolyte, and the electrolyte only needs to submerge the liquid inlet end of the second circulation pipeline. And the electrolyte circulates and flushes the stainless steel strip, which is also beneficial to the reaction between the electrolyte and the stainless steel strip. During the test, different voltages and currents are adjusted, and the stainless steel strip is taken out at a certain period to observe the removal of the oxide scale on the stainless steel strip, and relevant parameters can be obtained. During formal production, the parameters obtained from the test can be referred to determine the most suitable batch production parameters to improve the production efficiency. This application can conveniently test the electrolysis of various stainless steel strips with oxide scales at the same time, with simple operation and low cost.

[0034] Further, in the above-mentioned stainless steel strip oxide scale electrolytic removal device, an insulating guiding cover 7 is provided at the top end of the cathode sleeve 4, a guiding hole is provided in the central axis direction of the insulating guiding cover 7, the stainless steel strip passes through the guiding hole and extends into the cathode sleeve 4, and the top end of the insulating guiding cover 7 is recessed into a circular truncated cone-shaped groove.

[0035] As described above, the insulating guiding cover 7 is provided with a circular truncated cone-shaped groove, which is convenient for the stainless steel strip to be inserted into the cathode sleeve 4.

[0036] Further, in the above-mentioned stainless steel strip oxide scale electrolytic removal device, the insulating guiding cover 7 is threadedly connected to the upper end of the cathode sleeve 4.

[0037] As described above, the insulating guiding cover is threadedly connected to the upper end of the cathode sleeve, which can facilitate the disassembly and replacement of the insulating guiding cover.

[0038] Further, in the above electrolytic removal device for stainless steel strip scale, the number of the circulation pumps 2 is three, the number of the cathode sleeves 4 is three, and the number of the mounting through holes 6 is three.

[0039] As can be seen from the above description, the present application sets multiple circulation pumps 2 to form multiple electrolyte circulation pipelines, which can be used with stainless steel strips in different situations during one test, improving the test efficiency.

[0040] Further, in the above test device for electrolytic removal of stainless steel strip scale, a V-shaped groove is provided at the bottom of the electrolytic cell, and a drain pipe is connected to the bottom of the V-shaped groove.

[0041] As can be seen from the above description, setting the V-shaped groove can better replace the electrolyte that has gradually accumulated impurities due to use.

[0042] Embodiment 1:

[0043] As From Figure 1 to Figure 2 shown, an electrolytic removal device for stainless steel strip scale in this embodiment includes an electrolytic cell and an electrolyte circulation assembly; the electrolytic cell is used to hold the electrolyte;

[0044] The electrolyte circulation assembly includes a cathode support 1 and multiple circulation components;

[0045] The circulation components include a circulation pump 2 and a circulation pipeline 3. The circulation pump is arranged outside the electrolytic cell. The circulation pipeline 3 includes a first circulation pipeline and a second circulation pipeline;

[0046] One end of the first circulation pipeline is connected to the input end of the circulation pump 2, and the other end passes through the side wall of the electrolytic cell and extends into the electrolytic cell as the liquid outlet end; multiple vertical cathode sleeves 4 are provided on the cathode support 1, and the liquid outlet end of the first circulation pipeline is communicated with the bottom pipeline of one cathode sleeve 4;

[0047] One end of the second circulation pipeline is connected to the input end of the circulation pump 2, and the other end passes through the side wall of the electrolytic cell and extends into the electrolytic cell as the liquid inlet end;

[0048] A cell cover 5 is provided above the electrolytic cell, and mounting through holes 6 are provided on the cell cover 5 corresponding to the direction of the cathode sleeves 4.

[0049] The stainless steel strip passes through the mounting through hole 6 and is suspended in the cathode sleeve 4.

[0050] An insulating guide cover 7 is provided at the top of the cathode sleeve 4. A guide hole is provided in the central axis direction of the insulating guide cover 7. The stainless steel strip passes through the guide hole and extends into the cathode sleeve 4. The top of the insulating guide cover 7 is recessed into a circular truncated cone-shaped groove. The insulating guide cover 7 is threadedly connected to the upper end of the cathode sleeve 4.

[0051] The number of the circulation pumps 2 is three, the number of the cathode sleeves 4 is three, and the number of the mounting through holes 6 is three. A valve 8 is provided at one end of the first circulation pipeline connected to the input end of the circulation pump 2. The bottom of the electrolytic cell is provided with a V-shaped groove, and a drain pipe is connected to the bottom of the V-shaped groove.

[0052] Use of the above stainless steel strip scale electrolytic removal device: An electrolytic solution is placed in the electrolytic cell. The negative electrode of the power supply is clamped on the connecting piece, and the positive electrode of the power supply is applied to the top of the stainless steel strip. In this application, the diameters of the guiding holes of the insulating guiding covers are different. The stainless steel strip is placed on the guiding holes of the insulating guiding covers adapted to its diameter. Start with a relatively small voltage and current, and turn on the circulation pump to make the electrolytic solution contact the stainless steel strip more fully. During the test, adjust different voltages and currents. At regular intervals, take out the stainless steel strip, observe the electrolytic removal of the scale on the stainless steel strip, and record relevant parameters. When in formal production, the parameters obtained from the test can be referred to determine the most suitable mass production parameters to improve production efficiency.

[0053] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in the related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A device for electrolytic removal of oxide scale from stainless steel strips, characterized in that: It comprises an electrolytic cell and an electrolyte circulation component; the electrolytic cell is used to contain the electrolyte; The electrolyte circulation assembly includes a cathode support and a plurality of circulation parts; The circulation member comprises a circulation pump and a circulation pipeline, wherein the circulation pump is arranged outside the electrolytic cell, and the circulation pipeline comprises a first circulation pipeline and a second circulation pipeline; One end of the first circulation pipeline is connected to the input end of the circulation pump, and the other end passes through the side wall of the electrolytic cell and extends into the electrolytic cell as a liquid outlet; a plurality of vertical cathode sleeves are provided on the cathode support, and the liquid outlet end of the first circulation pipeline is connected to the bottom pipe of a cathode sleeve; One end of the second circulation pipeline is connected to the input end of the circulation pump, and the other end passes through the side wall of the electrolytic cell and extends into the interior of the electrolytic cell to serve as a liquid inlet end; A tank cover is provided above the electrolytic tank, and a mounting through hole is provided on the tank cover corresponding to the direction of the cathode sleeve; The stainless steel bar passes through the mounting through hole and is suspended in the cathode sleeve.

2. The device for electrolytically removing oxide scale from stainless steel strips according to claim 1, characterized in that: An insulating guide cover is provided at the top of the cathode sleeve, a guide hole is provided in the central axis direction of the insulating guide cover, the stainless steel bar passes through the guide hole and extends into the cathode sleeve, and the top of the insulating guide cover is recessed into a truncated cone-shaped groove.

3. The device for electrolytically removing oxide scale from stainless steel strips according to claim 2, characterized in that: The insulating guide cover is threadedly connected to the upper end of the cathode sleeve.

4. The device for electrolytically removing oxide scale from stainless steel strips according to claim 1, characterized in that: The number of the circulating pumps is 3, the number of the cathode sleeves is 3, and the number of the mounting through holes is 3.

5. The device for electrolytically removing oxide scale from stainless steel strips according to claim 1, characterized in that: A valve is provided on one end of the first circulation pipeline connected to the input end of the circulation pump.

6. The device for electrolytically removing oxide scale from stainless steel strips according to claim 1, characterized in that: A V-shaped groove is provided at the bottom of the electrolytic tank, and the bottom of the V-shaped groove is connected to a drainage pipe.

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