Copper alloy smelting and feeding device

Abstract

The utility model provides a copper alloy smelting feeding device which drives a fixing rod to descend or ascend through a lifting mechanism, and further drives a graphite pipe to be inserted into or leave a copper alloy melt. After the graphite pipe is inserted into a fixed depth of the copper alloy melt, inert gas is introduced, when alloy elements need to be added, alloy powder in the feeding groove is put into the gas inlet pipe, the inert gas drives the alloy powder to be sprayed into the copper alloy melt through the small holes in the graphite pipe, smelting feeding of the copper alloy is achieved, the alloy powder is prevented from making contact with air, and the service life of the copper alloy melt is prolonged. Oxidation of alloy elements and residual of impurities formed after oxidation in the copper alloy are effectively reduced, the smelting burning loss of the alloy elements is small, and the yield is high; and meanwhile, the inert gas is introduced to play a role in stirring the copper alloy melt, so that alloy elements are mixed more uniformly in the copper alloy melt, impurities in the copper alloy melt are removed favorably, and the copper alloy smelting effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of alloy smelting, in particular to a copper alloy smelting and feeding device. Background Art

[0002] Copper alloys have excellent electrical and thermal conductivity, excellent fatigue resistance and corrosion resistance. They are widely used in metallurgy, electronics, electricity, locomotives, welding, heat exchange and welding and other industrial fields. With the progress and development of society, the use conditions are becoming more and more demanding, and the requirements for their performance are also getting higher and higher.

[0003] Alloying by adding trace alloys can effectively improve the comprehensive properties of copper. Non-vacuum smelting copper alloys has the advantages of low production costs and large product specifications, but how to solve the problem of non-vacuum smelting of copper alloys is very critical. Since the added alloying elements have a greater affinity with oxygen and a lower density than copper, they tend to float on the surface of the copper liquid during smelting, resulting in greater burn loss and difficulty in precise control. After oxidation, some alloying elements will become impurities and remain in the copper alloy, which has a greater impact on the comprehensive properties of the copper alloy and product quality. Utility Model Content

[0004] In view of the fact that in the prior art, when copper alloy is smelted, alloy elements tend to float on the surface of copper liquid during smelting due to their greater affinity with oxygen and lower density than copper, resulting in greater burnout and difficulty in precise control. Part of the alloy elements will become impurities in the copper alloy after oxidation. The utility model provides a copper alloy smelting and feeding device.

[0005] A copper alloy smelting and feeding device comprises a fixed platform, a lifting mechanism is arranged on the fixed platform, a fixed rod is arranged above the lifting mechanism, an air pipe for inert gas to pass through is arranged on the fixed rod; a feeding trough for adding alloy powder is arranged on the air pipe, and a graphite tube is installed on the air outlet end of the air pipe, the end of the graphite tube away from the air pipe is sealed, and the sealed end of the graphite tube faces the fixed platform, and a side of the graphite tube away from the air pipe and the sealed end and the upper part are all provided with a plurality of small holes, and the aperture of the small holes is smaller than the diameter of the graphite tube.

[0006] Furthermore, a mounting platform is installed on the fixing rod, and the graphite tube is connected to the air outlet end of the air pipe and is fixed on the mounting platform by a nut.

[0007] Furthermore, an air pipe connector is provided at one end of the air pipe away from the graphite tube, and the air pipe connector is used to be connected to a gas storage device, and the gas storage device is used to store inert gas.

[0008] Furthermore, a molecular sieve is provided on a side of the gas pipe away from the graphite tube, and the molecular sieve is used to absorb moisture in the inert gas.

[0009] Furthermore, a first valve switch is provided on a side of the air pipe close to the air inlet end of the air pipe, and the first valve switch is located on a side of the feeding trough close to the air inlet end of the air pipe.

[0010] Furthermore, a second valve switch and a third valve switch are provided on the discharge port of the feeding trough.

[0011] Furthermore, the lifting mechanism includes a lifting rod and an adjusting motor for driving the lifting rod to move up and down.

[0012] Furthermore, the lifting rod can be rotatably mounted on the fixed platform.

[0013] The beneficial effects of the utility model are as follows: the utility model provides a copper alloy smelting and feeding device, which drives the fixed rod to descend or ascend through a lifting mechanism, thereby driving the graphite tube to be inserted into or leave the copper alloy melt; after the graphite tube is inserted to a fixed depth in the copper alloy melt, an inert gas is introduced, and when alloy elements need to be added, the alloy powder in the feeding trough is put into the air inlet pipe, and the inert gas drives the alloy powder and sprays it into the copper alloy melt through the small hole in the graphite tube, so as to realize the smelting and feeding of the copper alloy, avoid the contact of the alloy powder with the air, effectively reduce the oxidation of the alloy elements and the impurities formed after oxidation remaining in the copper alloy, reduce the alloy element smelting and burning loss, and have a higher recovery rate; at the same time, the inert gas introduced into the copper alloy melt can play a role in stirring the copper alloy melt, so that the alloy elements are mixed more evenly in the copper alloy melt, and it is also helpful to remove impurities in the copper alloy melt, thereby improving the copper alloy smelting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model provides a schematic structural diagram of a copper alloy smelting and feeding device.

[0015] Figure ID

[0016] 1. Fixed platform; 2. Lifting mechanism; 21. Lifting rod; 22. Adjusting motor; 3. Fixed rod; 4. Air pipe; 41. Air pipe connector; 5. Feeding trough; 6. Graphite tube; 61. Small hole; 7. Molecular sieve; 8. First valve switch; 9. Second valve switch; 10. Third valve switch; 11. Mounting platform; 12. Connecting nut. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0018] refer to Figure 1 As shown, a copper alloy smelting and feeding device is used to add alloy powder containing alloy elements to the copper alloy melt during the copper alloy smelting process. The copper alloy smelting and feeding device comprises a fixed platform 1, a lifting mechanism 2 is arranged on the fixed platform 1, a fixed rod 3 is arranged above the lifting mechanism 2, and a gas pipe 4 for inert gas to pass through is arranged on the fixed rod 3.

[0019] Specifically, the air pipe 4 is provided with a feeding trough 5 for adding alloy powder, and a graphite tube 6 is installed on the air outlet end of the air pipe 4, the end of the graphite tube 6 away from the air pipe 4 is sealed, and the sealed end of the graphite tube 6 faces the fixed platform 1, and a plurality of small holes 61 are provided on the side of the graphite tube 6 away from the air pipe 4 and the sealed end and the top of the graphite tube 6, and the aperture of the small hole 61 is smaller than the diameter of the graphite tube 6. In this embodiment, the air pipe 4 is an L-shaped pipe, and the air outlet end of the L-shaped pipe faces the ground.

[0020] The lifting mechanism 2 includes a lifting rod 21 and an adjusting motor 22 for driving the lifting rod 21 to lift. The lifting rod 21 is rotatably mounted on the fixed platform 1. When the copper alloy smelting and feeding device is used, the lifting rod 21 is first rotated in a fan shape along the fixed platform 1, so that the structure on the fixed rod 3 of the copper alloy smelting and feeding device moves to the top of the smelting furnace body filled with copper alloy melt, and then the lifting rod 21 is driven down or up by the adjusting motor 22 to drive the graphite tube 6 to insert or leave the copper alloy melt; when the copper alloy smelting and feeding device is not needed, the lifting rod 21 is rotated in a fan shape along the fixed platform 1 again, so that the copper alloy smelting and feeding device is moved out of the smelting furnace body area without hindering the smelting operation; in this embodiment, the sealed end of the graphite tube 6 faces the fixed platform 1, and the graphite tube 6 is arranged parallel to the lifting rod 21.

[0021] After the graphite tube 6 is inserted into the copper alloy melt, an inert gas is introduced into the air pipe 4, and the alloy powder put into the air inlet pipe by the feeding trough 5 is driven by the inert gas and sprayed into the copper alloy melt through the small hole 61 in the graphite tube 6, so as to realize the smelting and feeding of the copper alloy, avoid the contact between the alloy powder and the air, effectively reduce the oxidation of the alloy elements and the impurities formed after oxidation remaining in the copper alloy, reduce the alloy element smelting and burning loss, and have a higher recovery rate; at the same time, the introduction of the inert gas can stir the copper alloy melt, so that the alloy elements are mixed more evenly in the copper alloy melt, and also help to remove impurities in the copper alloy melt, thereby improving the smelting effect of the copper alloy.

[0022] The fixing rod 3 is also provided with a mounting platform 11, and the graphite tube 6 is connected to the gas outlet end of the air pipe 4 and fixed to the mounting platform 11 by a nut 12. The graphite tube 6 is fixed to the mounting platform 11 by the nut 12, so that the graphite tube 6 can be kept in a stable position during long-term use, and it is also convenient for future maintenance and replacement. When the graphite tube 6 needs to be replaced or repaired, it is only necessary to loosen the nut 12 to separate the graphite tube 6 from the mounting platform 11, and then separate the graphite tube 6 from the air pipe 4, and remove and replace the graphite tube 6.

[0023] The end of the gas pipe 4 away from the graphite tube 6 is provided with a gas pipe connector 41, and the gas pipe connector 41 is used to connect to a gas storage device (not shown in the figure). The gas storage device is used to store inert gas, and the inert gas includes but is not limited to one of nitrogen, argon, helium, and neon. Using inert gas to transport alloy powder into the copper alloy melt and stir the copper alloy melt can effectively improve the copper alloy smelting effect.

[0024] A molecular sieve 7 is provided on the side of the gas pipe 4 away from the graphite tube 6, and the molecular sieve 7 is used to absorb moisture in the inert gas. The molecular sieve 7 is a porous material with uniform pore size and extremely high specific surface area. These characteristics enable the molecular sieve 7 to selectively absorb moisture in the inert gas, thereby ensuring the purity of the inert gas passed into the copper alloy melt.

[0025] A first valve switch 8 is provided on the side of the air pipe 4 close to the air inlet end of the air pipe 4, and the first valve switch 8 is located on the side of the feeding trough 5 close to the air inlet end of the air pipe 4. A second valve switch 9 and a third valve switch 10 are provided on the discharge port of the feeding trough 5. By adjusting the opening and closing of the first valve switch 8, the second valve switch 9 and the third valve switch 10, the switching between adding alloy powder and introducing inert gas can be achieved.

[0026] By providing two valve switches, namely a second valve switch 9 and a third valve switch 10, at the discharge port of the feeding trough 5, it is not necessary to close the first valve switch 8 when alloy powder needs to be added; it is only necessary to open the second valve switch 9 to add the alloy powder, close the second valve switch 9, and then open the third valve switch 10 to allow the alloy powder to enter the air pipe 4.

[0027] The working principle of the utility model is as follows: first, the lifting rod 21 is rotated in a fan shape along the fixed platform 1, so that the structure on the fixed rod 3 of the copper alloy smelting and feeding device moves to the top of the smelting furnace body filled with the copper alloy melt, and then the lifting mechanism 2 drives the fixed rod 3 to descend or rise, and then drives the graphite tube 6 to be inserted into the fixed position in the copper alloy melt; then the inert gas is connected, and the first valve switch 8 is opened to pass the inert gas into the copper alloy melt; when it is necessary to add alloy elements, the second valve switch 9 is opened, the third valve switch 10 is closed, and after all the alloy powder is put into the feeding trough 5, the second valve switch 9 is closed, and the third valve switch 10 is opened. After all the alloy powder is put into the air pipe 4, it is carried by the inert gas to the small hole 61 on the graphite tube 6 and sprayed into the copper melt, completing the copper alloy smelting and feeding; at the same time, the inert gas is passed into the copper melt to stir the copper alloy melt, so that the alloy elements are mixed more evenly in the copper melt, and the feeding and stirring operations during copper alloy smelting are realized.

[0028] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A copper alloy smelting and feeding device, characterized in that: It comprises a fixed platform, a lifting mechanism is arranged on the fixed platform, a fixed rod is arranged above the lifting mechanism, an air pipe for inert gas to pass through is arranged on the fixed rod; a feeding trough for adding alloy powder is arranged on the air pipe, and a graphite tube is installed on the air outlet end of the air pipe, the end of the graphite tube away from the air pipe is sealed, and the sealed end of the graphite tube faces the fixed platform, and a side of the graphite tube away from the air pipe and the sealed end of the graphite tube are all provided with a plurality of small holes, and the aperture of the small holes is smaller than the diameter of the graphite tube.

2. A copper alloy smelting and feeding device according to claim 1, characterized in that: A mounting platform is installed on the fixing rod, and the graphite tube is connected to the gas outlet end of the gas pipe and is fixed on the mounting platform through a nut.

3. A copper alloy smelting and charging device according to claim 1, characterized in that: An air pipe connector is provided at one end of the air pipe away from the graphite tube, and the air pipe connector is used to be connected to a gas storage device, and the gas storage device is used to store inert gas.

4. A copper alloy smelting and feeding device according to claim 1, characterized in that: A molecular sieve is arranged on the side of the gas pipe away from the graphite tube, and the molecular sieve is used to absorb moisture in the inert gas.

5. The copper alloy smelting and charging device according to claim 1, characterized in that: A first valve switch is provided on one side of the air pipe close to the air inlet end of the air pipe, and the first valve switch is located on one side of the feeding trough close to the air inlet end of the air pipe.

6. A copper alloy smelting and charging device according to claim 1, characterized in that: A second valve switch and a third valve switch are provided on the discharge port of the feeding trough.

7. The copper alloy smelting and charging device according to claim 1, characterized in that: The lifting mechanism comprises a lifting rod and an adjusting motor for driving the lifting rod to move up and down.

8. A copper alloy smelting and charging device according to claim 7, characterized in that: The lifting rod can be rotatably mounted on the fixed platform.

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