Vacuum melting process of high-conductivity copper rod

Abstract

The invention discloses a vacuum melting process of a high-conductivity copper rod, and relates to the technical field of copper rod production, and the vacuum melting process comprises the following steps: S1, cleaning and drying a copper rod raw material through cleaning equipment, and removing oil stains, dust and the like on the surface; s2, putting the raw materials into a crucible in an induction coil in a smelting furnace, and heating the raw materials in the crucible through the induction coil to melt the raw materials; through the designed cleaning mechanism and the synergistic effect of an outer annular brush, an inner brush and an arc-shaped brush, heat insulation layers such as metal oxides and splashes on the outer surface of the induction coil can be thoroughly removed, the heat conduction performance of the induction coil is recovered, and the arc-shaped brush is tightly attached to the outer wall of the induction coil through a T-shaped sliding rail and an extrusion spring; the triangular plate can be elastically lifted when encountering the protruding part of the end of the induction coil in the moving process, cleaning is convenient, meanwhile, the transverse brush moves front and back along with the induction coil, the parts, exposed out of the rotating head, of the two ends of the induction coil are specifically cleaned, and the raw material heating and melting effect is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of copper rod production, in particular to a vacuum melting process for high-conductivity copper rods. Background Art

[0002] The production process of high-conductivity copper rods is to melt and shape the copper raw materials in a vacuum environment to improve the purity and conductivity of the copper rods. During the smelting process, the raw materials are melted in a smelting furnace. During the smelting process, the raw materials are placed in a crucible in the induction coil in the smelting tank. The raw materials in the crucible are heated and melted by the induction coil, and then poured into a mold to form a rod blank. Finally, the rod blank is processed into a copper rod through hot extrusion and drawing.

[0003] In the existing technology, after a long period of use, the outer surface of the induction coil is easily adhered to a layer of substances (such as metal oxides, molten metal splashes, impurity deposits, etc.). These substances are mostly substances with poor thermal conductivity, which will form a thermal insulation layer on the outer surface of the induction coil. This will make it difficult for the heat generated by the coil to be effectively transferred to the raw materials in the crucible, resulting in prolonged melting time, increased energy consumption, and affected the heating and melting effect of the raw materials. To this end, we propose a vacuum melting process for highly conductive copper rods. Summary of the Invention

[0004] The object of the present invention is to provide a vacuum melting process for high-conductivity copper rods to solve the technical problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a vacuum melting process for a high-conductivity copper rod, comprising the following steps: S1. Clean and dry the copper rod raw material through the cleaning equipment to remove oil and dust on the surface; S2, placing the raw materials into a crucible in an induction coil in a smelting furnace, and heating the raw materials in the crucible by the induction coil to melt them; S3, after melting, pouring the liquid in the crucible into a mold to cool and solidify to form a copper rod blank; S4, processing the rod blank into a copper rod through a hot extrusion device and a drawing device; S5. When a lot of substances are attached to the outer surface of the induction coil, the substances attached to the outer surface of the induction coil are cleaned by a cleaning mechanism.

[0006] Preferably, the smelting furnace in step S2 includes a main machine, a smelting pot provided on the main machine, and an induction coil provided inside the smelting pot, wherein a cleaning mechanism is provided inside the smelting pot, and the cleaning mechanism includes: A cleaning assembly includes a circular plate, an inner brush, and two sets of outer annular brushes disposed in the smelting tank, wherein the inner brush and the two sets of outer annular brushes are used to clean the material adhering to the outer wall of the induction coil; Two groups of outer supporting rods and two groups of inner supporting rods are fixedly arranged on the back side of the circular plate, and a horizontal brush is fixedly arranged on one side of the outer annular brush.

[0007] Preferably, an arc-shaped brush is provided on the outer annular brush, a T-shaped slide groove is provided on the other side of the outer annular brush, a T-shaped slide rail is provided inside the T-shaped slide groove, and the arc-shaped brush is fixed on the T-shaped slide rail.

[0008] Preferably, an upper plate is fixedly provided on the other side of the outer annular brush, and a compression spring is fixedly provided between the upper plate and the arc-shaped brush.

[0009] Preferably, two sets of triangular plates are fixedly provided on the outer wall of the arc-shaped brush, the inner wall of the outer annular brush contacts the outer wall of the induction coil, and the outer wall of the inner brush contacts the inner wall of the induction coil.

[0010] Preferably, the cleaning mechanism further comprises a moving assembly, and the moving assembly comprises a horizontal hydraulic rod and an upper hydraulic rod.

[0011] Preferably, an auxiliary cleaning part is provided on the back of the circular plate, and the auxiliary cleaning part includes a mounting ring brush provided on the back of the circular plate, a connecting plate is fixedly provided on the bottom of the working end of the horizontal hydraulic rod, and a lower hydraulic rod is fixedly provided on the bottom of the connecting plate, and the working end of the lower hydraulic rod passes through the interior of the circular plate and extends to the surface of the mounting ring brush.

[0012] Preferably, a vacuum pump is fixedly provided on one side of the smelting pot, and a fixed head is fixedly provided inside the smelting pot.

[0013] Preferably, a rotating head is rotatably provided inside the fixed head, and a wrench is provided outside the rotating head.

[0014] Preferably, an electric slip ring is provided at the end of the fixed head, and the electric slip ring extends to the interior of the host through two sets of electric wires.

[0015] Compared with the prior art, the present invention has the following beneficial effects: (1) The cleaning mechanism of the present invention can completely remove the metal oxides, splashes and other heat insulation layers on the outer surface of the induction coil through the synergistic effect of the outer ring brush, the inner brush and the arc brush, thereby restoring the heat conductivity of the induction coil. The arc brush is tightly attached to the outer wall of the induction coil through the T-shaped slide rail and the extrusion spring. When the triangle plate encounters the protruding part at the end of the induction coil during movement, it can be elastically lifted, which is convenient for cleaning. At the same time, the horizontal brush moves back and forth with the induction coil, specifically cleaning the parts at both ends of the induction coil that are exposed to the rotating head, avoiding impurities remaining in this area due to inaccessibility, thereby improving the heating and melting effect of the raw materials.

[0016] (2) The present invention is equipped with an auxiliary cleaning part. The ring brush installed on the back of the circular plate is driven by the lower hydraulic rod. After cleaning, the impurities attached to the surface of the outer ring brush and the inner brush can be cleaned to prevent the impurities carried by the outer ring brush and the inner brush from falling onto the surface of the induction coil during the next cleaning, thereby causing secondary pollution. The auxiliary cleaning part cooperates with the cleaning mechanism to facilitate subsequent cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a right side structural schematic diagram of the present invention; Figure 3 This is a schematic cross-sectional view of the smelting tank of the present invention; Figure 4 Schematic diagram of the circular plate structure of the present invention; Figure 5 It is a rear view structural diagram of the circular plate and the ring brush of the present invention; Figure 6 This is a schematic diagram of the outer annular brush structure of the present invention when viewed from above; Figure 7 This is a schematic diagram of the front view of the induction coil structure of the present invention; Figure 8 This is a schematic diagram of the curved brush and triangular plate structure of the present invention; Figure 9 This is a schematic side view of the outer annular brush structure of the present invention; Figure 10 This is a schematic diagram of the T-shaped slide rail structure of the present invention; Figure 11 This is a schematic diagram of the rear view structure of the curved brush and the triangular plate of the present invention; In the figure: 100, door cover; 101, vacuum tube; 102, smelting pot; 103, main machine; 105, wrench; 106, induction coil; 107, fixed head; 108, rotating head; 200, circular plate; 201, upper hydraulic rod; 202, horizontal hydraulic rod; 204, outer support rod; 205, inner support rod; 206, triangular plate; 207, horizontal brush; 208, outer annular brush; 209, arc brush; 210, inner brush; 211, upper plate; 212, connecting spring; 213, T-shaped slide rail; 300, lower hydraulic rod; 301, annular brush; 302, connecting plate. DETAILED DESCRIPTION

[0018] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] Example 1 See also Figures 1-11 The present invention provides a technical solution: a vacuum melting process for a high-conductivity copper rod, comprising the following steps: S1. Clean and dry the copper rod raw material through the cleaning equipment to remove oil and dust on the surface; S2, placing the raw materials into a crucible in the induction coil 106 in the smelting furnace, and heating the raw materials in the crucible by the induction coil 106 to melt them; S3, after melting, pouring the liquid in the crucible into a mold to cool and solidify to form a copper rod blank; S4, processing the rod blank into a copper rod through a hot extrusion device and a drawing device; S5. When a lot of matter is attached to the outer surface of the induction coil 106, the matter attached to the outer surface of the induction coil 106 is cleaned by the cleaning mechanism; The smelting furnace in step S2 includes a main unit 103, a smelting pot 102 mounted on the main unit 103, and an induction coil 106 disposed inside the smelting pot 102. A door cover 100 is provided on the front of the smelting pot 102, which is rotatable via a rotating shaft. The door cover 100 is opened when loading or unloading materials. A crucible is provided in the middle of the induction coil 106. A cleaning mechanism is provided inside the smelting pot 102, which includes: The cleaning assembly includes a circular plate 200, an inner brush 210, and two sets of outer annular brushes 208 disposed in the smelting tank 102. The inner brush 210 and the two sets of outer annular brushes 208 are used to clean the material attached to the outer wall of the induction coil 106. Two sets of outer support rods 204 and two sets of inner support rods 205 are fixedly provided on the back of the circular plate 200. When the circular plate 200 moves, the two sets of outer support rods 204 and the two sets of inner support rods 205 will also move. Two sets of horizontal brushes 207 are fixedly provided on one side of the outer annular brush 208. The horizontal brushes 207 move back and forth along with the outer annular brush 208 to clean the protruding positions of the two ends of the induction coil 106 (that is, the positions where the two ends of the induction coil 106 are connected to the rotating head 108). The outer annular brush 208 is fixed on the outer support rod 204, and the inner brush 210 is fixed on the inner support rod 205. An arc-shaped brush 209 is provided on the outer annular brush 208. A T-shaped slide groove is provided on the other side of the outer annular brush 208. A T-shaped slide rail 213 is provided inside the T-shaped slide groove for sliding. The arc-shaped brush 209 is fixed on the T-shaped slide rail 213. An upper plate 211 is fixedly provided on the other side of the outer annular brush 208, and a connecting spring 212 is fixedly provided between the upper plate 211 and the arc-shaped brush 209; Two sets of triangular plates 206 are fixedly provided on the outer wall of the arc-shaped brush 209 , the inner wall of the outer annular brush 208 contacts the outer wall of the induction coil 106 , and the outer wall of the inner brush 210 contacts the inner wall of the induction coil 106 .

[0020] Example 2 Based on Example 1, please refer to Figure 1 and Figure 2 The cleaning mechanism also includes a moving assembly, which includes a horizontal hydraulic rod 202 and an upper hydraulic rod 201. The working end of the horizontal hydraulic rod 202 is fixed to the front of the circular plate 200, and the working end of the upper hydraulic rod 201 is fixed to the horizontal hydraulic rod 202. An L-shaped frame is fixed on the top of the smelting tank 102, and the upper hydraulic rod 201 is fixed on the L-shaped frame.

[0021] In summary, after the rotating head 108 is rotated to tilt the induction coil 106 and the crucible to pour out the liquid, the crucible is removed from the induction coil 106. Then, after waiting for the induction coil 106 to cool, the substances attached to the outside of the induction coil 106 are cleaned. During cleaning, the upper hydraulic rod 201 is turned on, and the bottom working end of the upper hydraulic rod 201 moves downward, driving the horizontal hydraulic rod 202 to move, and then driving the circular plate 200, the outer annular brush 208, the inner brush 210 and other structures to move downward. Then, when the upper hydraulic rod 201 moves to a suitable height position, it stops running. At this time, the outer annular brush 208, the inner brush 210 and the induction coil 106 are at the same height and aligned. Then the horizontal hydraulic rod 202 is turned on, and the working end of the horizontal hydraulic rod 202 moves toward the back direction of the equipment, driving the circular plate 200, the outer annular brush 208, the inner brush 210 and other structures to move accordingly. Subsequently, the inner wall of the outer annular brush 208 begins to contact the outer wall of the induction coil 106, and the outer wall of the inner brush 210 contacts the inner wall of the induction coil 106 (the inner and outer walls here are the inner and outer walls of the annular structure formed by the spiral induction coil 106). At this time, the inner and outer walls of the annular induction coil 106 can be cleaned to sweep away the attached materials. After moving to the appropriate position in the back direction, the working end of the horizontal hydraulic rod 202 moves toward the front direction of the equipment, driving the circular plate 200, the outer annular brush 208, the inner brush 210 and other structures to move toward the front direction of the equipment. In this way, the inner and outer walls of the induction coil 106 can be cleaned. When the outer annular brush 208 and the inner brush 210 are moving back and forth in the front and back directions, when they move toward the back direction, the arc brush 209 is also driven to move, and the arc brush 209 drives the two sets of triangular plates 206 to move. Then, the inclined surface of the triangular plate 206 located near the back of the arc brush 209 hits the protruding part of the front end of the induction coil 106. At this time, the triangular plate 206 is squeezed by the protruding part and starts to move upward, driving the arc brush 209 to move. At this time, the T-shaped slide rail 213 located in the T-shaped slide groove slides upward in the T-shaped slide groove, and then the connecting spring 212 is affected by the upward movement of the arc brush 209 and begins to compress. Then, as the outer annular brush 208 drives the arc brush 209 to continue to move toward the back direction, the triangular plate 206 located near the front of the arc brush 209 6 begins to contact the protruding part of the end of the induction coil 106. At this time, the triangular plate 206 located at the back of the arc brush 209 is separated from the protruding part. As it moves, the triangular plate 206 located at the front of the arc brush 209 is also separated from the protruding surface. Then the connecting spring 212 squeezes the arc brush 209, so that the arc brush 209 moves downward to return to its original position. After the arc brush 209 returns to its original position, it forms a ring-shaped structure with the outer annular brush 208, which can clean the inner and outer walls of the annular induction coil 106. Then, when the arc brush 209 passes the protruding part at the back of the induction coil 106, it is similar to the above. After moving to the back to a suitable position, it moves toward the front of the device. At this time, the triangular plate 206 located at the front of the arc brush 209 begins to contact the protruding part first and then moves upward. Moreover, when the outer annular brush 208 moves back and forth in the front-rear direction, it will also drive the two groups of horizontal brushes 207 on one side of the outer annular brush 208 to move along. At this time, the two groups of horizontal brushes 207 begin to sweep the protruding parts at both ends of the induction coil 106 (the parts between the two ends of the induction coil 106 and the rotating head 108), so that the outer wall of the induction coil 106 exposed to the rotating head 108 is cleaned in all directions to avoid dead corners that cannot be cleaned.

[0022] Example 3 Based on Example 2, please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 7 An auxiliary cleaning part is provided on the back of the circular plate 200, and the auxiliary cleaning part includes a mounting ring brush 301 provided on the back of the circular plate 200. A connecting plate 302 is fixedly provided at the bottom of the working end of the horizontal hydraulic rod 202, and a lower hydraulic rod 300 is fixedly provided at the bottom of the connecting plate 302. The working end of the lower hydraulic rod 300 passes through the interior of the circular plate 200 and extends to the surface of the mounting ring brush 301.

[0023] In summary, when the outer annular brush 208 and the inner brush 210 have finished cleaning the material on the outer wall of the induction coil 106, the working end of the horizontal hydraulic rod 202 moves toward the front direction of the equipment, driving the circular plate 200, the outer annular brush 208, the inner brush 210 and other structures to move. When they move to the appropriate position, the outer annular brush 208 and the inner brush 210 are located outside the smelting tank 102, and then the lower hydraulic rod 300 is opened, and the working end of the lower hydraulic rod 300 extends outward, driving the annular brush 301 to move. At this time, the inner and outer walls of the annular brush 301 will contact the inner wall of the outer annular brush 208 and the outer wall of the inner brush 210, and the outer annular brush 301 will be in contact with the inner wall of the outer annular brush 208 and the outer wall of the inner brush 210. The outer annular brush 208 and the inner brush 210 are cleaned of the substances attached thereto. When the annular brush 301 moves to a suitable position, it moves toward the circular plate 200. This is repeated several times to clean the substances attached thereto. At the same time, the substances attached to the annular brush 301 are swept away during the cleaning process. The outer annular brush 208, the inner brush 210 and the annular brush 301 clean each other and clean all the substances attached thereto. After the cleaning is completed, the upper hydraulic rod 201 is used to move the horizontal hydraulic rod 202, the outer annular brush 208, the inner brush 210 and the like upwards and back to their original positions.

[0024] In this embodiment, a vacuum pump 101 is fixedly provided on one side of the smelting pot 102 , and a fixing head 107 is fixedly provided inside the smelting pot 102 .

[0025] In this embodiment, a rotating head 108 is provided inside the fixed head 107 for rotation, and both ends of the induction coil 106 extend to the inside of the rotating head 108. A wrench 105 is provided outside the rotating head 108. When pouring out the molten liquid in the crucible inside the induction coil 106, the rotation of the wrench 105 can drive the rotating head 108 to tilt the induction coil 106 and the crucible, thereby facilitating the pouring out of the liquid.

[0026] In this embodiment, an electric slip ring is provided at the end of the fixed head 107. The electric slip ring is composed of a prohibiting ring and a rotating ring. The rotating ring is connected to the two ends of the induction coil 106, and the stationary ring is connected to the main unit 103 through two sets of wires. The stationary ring is also fixedly connected to the main unit 103 through a fixed rod. The two ends of the induction coil 106 are connected to the electric slip ring, and the electric slip ring extends to the interior of the main unit 103 through two sets of wires.

[0027] The above embodiments are only used to illustrate the technical method of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. Vacuum melting process for high conductive copper rod, characterized in that: The following steps are involved: S1. Clean and dry the copper rod raw material through the cleaning equipment to remove oil and dust on the surface; S2, placing the raw material into a crucible in the induction coil (106) in the smelting furnace, and heating the raw material in the crucible by the induction coil (106) to melt it; S3, after melting, pouring the liquid in the crucible into a mold to cool and solidify to form a copper rod blank; S4, processing the rod blank into a copper rod through a hot extrusion device and a drawing device; S5. When a lot of matter is attached to the outer surface of the induction coil (106), the matter attached to the outer surface of the induction coil (106) is cleaned by a cleaning mechanism.

2. The vacuum melting process for a high-conductivity copper rod according to claim 1, characterized in that: The smelting furnace in step S2 includes a main machine (103), a smelting tank (102) arranged on the main machine (103), and an induction coil (106) arranged inside the smelting tank (102). A cleaning mechanism is arranged inside the smelting tank (102), and the cleaning mechanism includes: A cleaning assembly includes a circular plate (200), an inner brush (210), and two sets of outer annular brushes (208) disposed in the smelting pot (102), wherein the inner brush (210) and the two sets of outer annular brushes (208) are used to clean substances attached to the outer wall of the induction coil (106); Two groups of outer support rods (204) and two groups of inner support rods (205) are fixedly provided on the back of the circular plate (200), and a horizontal brush (207) is fixedly provided on one side of the outer annular brush (208).

3. The vacuum melting process for a high-conductivity copper rod according to claim 2, characterized in that: An arc-shaped brush (209) is provided on the outer annular brush (208), a T-shaped slide groove is provided on the other side of the outer annular brush (208), a T-shaped slide rail (213) is provided inside the T-shaped slide groove, and the arc-shaped brush (209) is fixed on the T-shaped slide rail (213).

4. The vacuum melting process for a high-conductivity copper rod according to claim 3, wherein: An upper plate (211) is fixedly provided on the other side of the outer annular brush (208), and a compression spring (212) is fixedly provided between the upper plate (211) and the arc-shaped brush (209).

5. The vacuum melting process for a high-conductivity copper rod according to claim 3, wherein: Two sets of triangular plates (206) are fixedly provided on the outer wall of the arc-shaped brush (209), the inner wall of the outer annular brush (208) contacts the outer wall of the induction coil (106), and the outer wall of the inner brush (210) contacts the inner wall of the induction coil (106).

6. The vacuum melting process for a high-conductivity copper rod according to claim 2, wherein: The cleaning mechanism further comprises a moving assembly, which comprises a horizontal hydraulic rod (202) and an upper hydraulic rod (201).

7. The vacuum melting process for a high-conductivity copper rod according to claim 6, characterized in that: An auxiliary cleaning member is provided on the back of the circular plate (200), and the auxiliary cleaning member comprises a mounting ring brush (301) provided on the back of the circular plate (200); a connecting plate (302) is fixedly provided on the bottom of the working end of the horizontal hydraulic rod (202); a lower hydraulic rod (300) is fixedly provided on the bottom of the connecting plate (302); and a working end of the lower hydraulic rod (300) passes through the interior of the circular plate (200) and extends to the surface of the mounting ring brush (301).

8. The vacuum melting process for a high-conductivity copper rod according to claim 2, wherein: A vacuum extraction pipe (101) is fixedly provided on one side of the smelting pot (102), and a fixed head (107) is fixedly provided inside the smelting pot (102).

9. The vacuum melting process for a high-conductivity copper rod according to claim 8, characterized in that: A rotating head (108) is rotatably provided inside the fixed head (107), and a wrench (105) is provided outside the rotating head (108).

10. The vacuum melting process for a high-conductivity copper rod according to claim 9, characterized in that: An electric slip ring is provided at the end of the fixed head (107), and the electric slip ring extends to the interior of the host (103) through two sets of electric wires.

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