Composite conductive rod of negative plate
By designing the composite conductive rod shell into a horseshoe shape that is larger at the top and smaller at the bottom with axial symmetry, residual stress is reduced, cracking and short circuit burning are avoided, and the reliability of electrolytic copper production is improved.
Patent Information
- Application Number
- CN202520129978.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-01-20
AI Technical Summary
Existing composite conductive rods are prone to cracking in acidic environments, leading to problems such as cathode plate deformation, warping, short circuits, and burnout.
The composite conductive rod adopts a horseshoe-like shape with a larger top and smaller bottom, and axial symmetry. The radial cross-section of the composite conductive rod is also horseshoe-like with a larger top and smaller bottom, and axial symmetry. The radial cross-section of the outer shell is also horseshoe-like with a larger top and smaller bottom, and axial symmetry. The rounded transitions at the connections between the outer shell and the top wall, and between the side wall and the bottom wall reduce the residual stress of the composite conductive rod after drawing and forming. The bottom shape of the outer shell is close to a semi-circular arc surface, which self-adjusts the center of gravity to reduce short circuit burns.
It effectively reduces the residual stress of composite conductive rods after drawing and forming, avoids end cracking, reduces the failure of short circuit and burning of cathode plates after warping, and improves the reliability of electrolytic copper operation.
Smart Images
Figure CN223688480U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to electrolytic equipment technical field, specifically a kind of cathode plate composite conducting rod. BACKGROUND
[0002] Stainless steel cathode plate is widely used in electrolytic copper production, and the cathode plate conducting rod is usually a steel ladle copper composite structure with T2 copper rod as inner core and 316L stainless steel as outer shell. The composite conducting rod has good conductivity and is not easy to deform. The radial cross section of the commonly used composite conducting rod is square as shown in the figure. Figure 1 After the composite conducting rod is drawn, there is a large residual stress in the square cross section of its end. When the composite conducting rod is in an acidic environment at a certain temperature for a long time, the end of the composite conducting rod is easy to crack due to corrosion.
[0003] The cathode plate will warp after a long time of electrolysis. Since the composite conducting rod with square structure cannot adjust the position of the cathode plate in the electrolytic cell according to the weight of the cathode plate, the deformed cathode plate will contact the anode plate and cause short circuit, which will further cause the cathode plate to burn. SUMMARY
[0004] The utility model aims to provide a cathode plate composite conducting rod to avoid the problem of end cracking of the composite conducting rod and short circuit and burning of the cathode plate after warping.
[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:
[0006] A cathode plate composite conducting rod includes an outer shell and an inner core. The outer shell is wrapped around the outer surface of the inner core. The radial cross section of the conducting rod is similar to a horseshoe shape with the upper part larger than the lower part and axisymmetric. The outer wall of the outer shell includes a top wall, a bottom wall, a left side wall and a right side wall. The top wall and the bottom wall are parallel to each other. The left and right ends of the top wall are connected to the top ends of the left and right side walls through two symmetrically arranged first circular arcs, respectively. The left and right ends of the bottom wall are connected to the top ends of the left and right side walls through two symmetrically arranged second circular arcs, respectively. The left and right side walls are inclined from top to bottom to the bottom wall. The width of the top wall is slightly larger than 2.5 times the radius of the second circular arc, and the width of the bottom wall is less than 0.5 times the radius of the second circular arc.
[0007] Preferably, the radius of the first circular arc is 3mm.
[0008] Preferably, the radius of the second circular arc is 10mm.
[0009] Preferably, the bottom end of the left side wall is inclined inward by 1mm compared to its top end, and the bottom end of the right side wall is also inclined inward by 1mm compared to its top end.
[0010] Preferably, the distance between the top wall and the bottom wall is 40mm.
[0011] Preferably, the thickness of the shell is 3mm.
[0012] The utility model discloses a shell's radial section is designed into the similar horseshoe shape of big down small, axial symmetry, the arc transition of the side wall and top wall, side wall and bottom wall junction of shell can effectively reduce the residual stress of composite conducting rod after drawing forming, and then avoid the end cracking of composite conducting rod when using, cause the short circuit of cathode plate warping after burning plate.
[0013] The second arc radius of the lower part of the shell is greater than the width of the bottom wall, so that the bottom of the shell is in the shape of a semicircular arc surface, when the cathode plate is deformed, the center of gravity of the composite conducting rod and the cathode plate also changes, and the composite conducting rod can adjust its angle under the action of gravity, thereby reducing the failure of short circuit and burning plate, and improving the reliability of electrolytic copper operation. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is the schematic diagram of the radial section of the existing composite conducting rod;
[0015] Figure 2 It is the schematic diagram of the radial section of the composite conducting rod of the utility model;
[0016] Figure 3 It is the schematic diagram of the radial section of the composite conducting rod of the embodiment;
[0017] Figure 4 It is the finite element analysis result comparison drawing of the shell of square composite conducting rod and the shell of composite conducting rod with arc;
[0018] Figure 5 It is the angle comparison drawing of the composite conducting rod of the utility model before and after self-adjustment after warping deformation.
[0019] In the drawing: 1, top wall, 2, bottom wall, 3, left side wall, 4, right side wall, 5, first arc 6, second arc, 7, inner core, 8, shell. DETAILED DESCRIPTION
[0020] The utility model will be further explained in detail in combination with the drawings.
[0021] As Figure 2The cathode plate composite conductive rod shown comprises an outer shell 8 and an inner core 7, the outer shell 8 is wrapped on the outer surface of the inner core 7, the radial cross section of the conductive rod is a horse-shoe shape which is large at the top and small at the bottom and is axisymmetric, the outer wall of the outer shell 8 comprises a top wall 1, a bottom wall 2, a left side wall 3 and a right side wall 4, the top wall 1 and the bottom wall 2 are parallel to each other, the left and right ends of the top wall 1 are connected with the top ends of the left side wall 3 and the right side wall 4 through two first circular arcs 5 arranged symmetrically, the left and right ends of the bottom wall 2 are connected with the top ends of the left side wall 3 and the right side wall 4 through two second circular arcs 6 arranged symmetrically, the left side wall 3 and the right side wall 4 are inclined from top to bottom to the bottom wall 2, the width of the top wall 1 is slightly larger than 2.5 times the radius of the second circular arc 6, and the width of the bottom wall 2 is smaller than 0.5 times the radius of the second circular arc.
[0022] The optimal size of the composite electrode rod is that the radius of the first circular arc 5 is 3mm, the radius of the second circular arc 6 is 10mm, the bottom end of the left side wall 3 is inclined inward by 1mm compared with the top end, the bottom end of the right side wall 4 is also inclined inward by 1mm compared with the top end, the distance between the top wall 1 and the bottom wall 2 is 40mm, and the thickness of the outer shell 8 is 3mm.
[0023] The radial cross section of the outer shell is designed as a horse-shoe shape which is large at the top and small at the bottom and is axisymmetric, the circular arc transition at the connection between the side wall and the top wall and the connection between the side wall and the bottom wall of the outer shell can effectively reduce the residual stress of the composite conductive rod after drawing forming, thereby avoiding the end cracking of the composite conductive rod during use, causing the short circuit and burning of the cathode plate after the cathode plate is warped.
[0024] Through finite element modeling calculation, it is obtained that the residual stress distribution of the composite conductive rod with a traditional square cross section structure and the composite electrode rod prepared according to the above size of the utility model after drawing forming is as shown in Figure 3 From Figure 3 it can be seen that, due to the outer shell structure of the composite conductive rod being more conducive to stress release during the drawing forming process, the structural stress after forming is smaller, which is conducive to preventing the stress corrosion cracking of the end of the composite conductive rod during copper electrolysis production.
[0025] In order to explore whether the composite conductive rod can alleviate the problem of cathode plate warping and short circuit burning during electrolytic refining of copper, a warped and deformed cathode plate model is constructed by using SolidWorks software, and the process of self-adjusting gravity center of the composite conductive rod is analyzed by motion simulation. It is verified that, after the cathode plate is warped and deformed, the gravity center of the cathode plate will also change, and the angles of the composite conductive rod before and after self-adjusting after warping and deforming are compared, as shown in Figure 4 The results show that the composite conductive rod can self-correct under the action of gravity, thereby reducing the possibility of short circuit and burning.
[0026] The above is only the preferred example of the present application. It should be pointed out that for those skilled in the art, under the technical inspiration provided by the present application, other equivalent modifications and improvements can also be made, which should also be considered as the protection scope of the present application.
Claims
1. A cathode plate composite conductive rod comprising an outer shell (8) and an inner core (7), the outer shell (8) being wrapped on the outer surface of the inner core (7), characterized in that: The radial cross section of the conductive rod is a horse-shoe shape with the top larger than the bottom, and the outer wall of the shell (8) comprises a top wall (1), a bottom wall (2), a left side wall (3) and a right side wall (4), the top wall (1) and the bottom wall (2) are parallel to each other, the left and right ends of the top wall (1) are connected to the top ends of the left side wall (3) and the right side wall (4) through two first circular arcs (5) arranged symmetrically, and the left and right ends of the bottom wall (2) are connected to the top ends of the left side wall (3) and the right side wall (4) through two second circular arcs (6) arranged symmetrically; the left side wall (3) and the right side wall (4) are inclined from top to bottom to the bottom wall (2), the width of the top wall (1) is slightly larger than 2.5 times the radius of the second circular arc (6), and the width of the bottom wall (2) is smaller than 0.5 times the radius of the second circular arc.
2. The cathode plate composite conductor bar of claim 1, wherein: The radius of the first circular arc (5) is 3 mm.
3. The cathode plate composite conductor rod of claim 1, wherein: The radius of the second circular arc (6) is 10 mm.
4. The cathode plate composite conductor bar of claim 1 wherein: The bottom end of the left side wall (3) is inclined inward by 1 mm compared to the top end, and the bottom end of the right side wall (4) is also inclined inward by 1 mm compared to the top end.
5. The cathode plate composite conductor bar of claim 1 wherein: The distance between the top wall (1) and the bottom wall (2) is 40 mm.
6. The cathode plate composite conductor bar of claim 1 wherein: The thickness of the shell (8) is 3 mm.