Degassing device for hypereutectic aluminum-silicon alloy production

Abstract

The present invention discloses a degassing device for the production of hypereutectic aluminum-silicon alloy, comprising an air supply device and an exhaust device, wherein the air supply device comprises an air supply pipeline and a drying mechanism, a first air source detection mechanism and a temperature control mechanism sequentially arranged along the air supply pipeline, and both ends of the air supply pipeline are respectively connected to a nitrogen storage tank and a degassing inlet of a hypereutectic aluminum-silicon alloy production device, and the exhaust device comprises an exhaust pipeline and a non-return mechanism and a second air source detection mechanism sequentially arranged along the exhaust pipeline, and one end of the exhaust pipeline is connected to a degassing outlet of the hypereutectic aluminum-silicon alloy production device. The present invention has a reasonable design and a simple principle, and has the functional effects of air source drying and preheating, thereby reducing the adverse effects of degassing on the production of hypereutectic aluminum-silicon alloy. In addition, the degassing process can be effectively monitored to ensure the degassing effect, which is helpful to improve the quality of hypereutectic aluminum-silicon alloy products.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum alloys, in particular to a degassing device for producing hypereutectic aluminum-silicon alloys. Background Art

[0002] Hypereutectic aluminum-silicon alloy refers to an aluminum-silicon alloy whose alloy composition exceeds the eutectic composition point. It has the characteristics of wear resistance, heat resistance and corrosion resistance, and has a small thermal expansion coefficient and good volume stability. It is an ideal material for manufacturing key engine components (cylinders and pistons) and can replace eutectic aluminum-silicon alloy ZL109, hypoeutectic aluminum-silicon alloy or steel materials.

[0003] During the production process of hypereutectic aluminum-silicon alloy, the gas source must be strictly controlled to avoid air inhalation and oxidation during the melting and casting process. The commonly used solution is to degas by nitrogen, but traditional degassing cannot effectively monitor the degassing effect. At the same time, the treatment of the gas source is relatively lacking, and the nitrogen used for degassing is not adequately treated at the front end, resulting in a decrease in the product quality of hypereutectic aluminum-silicon alloy. Summary of the invention

[0004] In view of the above problems, the present invention discloses a degassing device for producing hypereutectic aluminum-silicon alloy.

[0005] The specific technical solutions are as follows:

[0006] A degassing device for the production of hypereutectic aluminum-silicon alloy, characterized in that it includes an air supply device and an exhaust device, wherein the air supply device includes an air supply pipeline and a drying mechanism, a first air source detection mechanism and a temperature control mechanism sequentially arranged along the air supply pipeline, and both ends of the air supply pipeline are respectively connected to a nitrogen storage tank and a degassing inlet of the hypereutectic aluminum-silicon alloy production equipment, and the exhaust device includes an exhaust pipeline and a non-return mechanism and a second air source detection mechanism sequentially arranged along the exhaust pipeline, and one end of the exhaust pipeline is connected to the degassing outlet of the hypereutectic aluminum-silicon alloy production equipment.

[0007] The above-mentioned degassing device for the production of hypereutectic aluminum-silicon alloy, wherein the drying mechanism is a gas source dryer, the first gas source detection mechanism is a nitrogen concentration sensor, nitrogen is supplied by a nitrogen storage tank, and is transported to the hypereutectic aluminum-silicon alloy production equipment through a gas supply device, and enters the hypereutectic aluminum-silicon alloy production equipment from a degassing inlet for degassing; the nitrogen passes through the drying mechanism, the first gas source detection mechanism and the temperature control mechanism in the gas supply pipeline in turn, is dried by the drying mechanism, and then is detected by the first gas source detection mechanism to detect the nitrogen concentration, and finally, after the temperature is compensated by the temperature control mechanism, it is sent into the hypereutectic aluminum-silicon alloy production equipment through the degassing inlet.

[0008] In the above-mentioned degassing device for the production of hypereutectic aluminum-silicon alloy, the temperature control mechanism is a temperature control heater.

[0009] The above-mentioned degassing device for the production of hypereutectic aluminum-silicon alloy, wherein the temperature control mechanism is a heat source recovery device, which is connected to the temperature control cooling device of the hypereutectic aluminum-silicon alloy production equipment to recover heat for nitrogen temperature compensation.

[0010] The above-mentioned degassing device for the production of hypereutectic aluminum-silicon alloy, wherein the check mechanism is a check valve, and the second gas source detection mechanism is a nitrogen concentration sensor; during the degassing process, the gas exhausted from the hypereutectic aluminum-silicon alloy production equipment is discharged through the exhaust pipe, and during the discharge process, the gas backflow is prevented by the check mechanism. In addition, the second gas source detection mechanism constantly monitors the nitrogen concentration in the exhaust gas until, within a certain period, the detected nitrogen concentration always maintains 100%, at which time, it can be confirmed that the degassing is completed and the nitrogen supply is stopped.

[0011] The above-mentioned degassing device for the production of hypereutectic aluminum-silicon alloy, wherein the second gas source detection mechanism is connected to a wireless controller transmitter, the gas supply pipeline and the exhaust pipeline are respectively provided with a first flow control valve and a second flow control valve, the first flow control valve and the second flow control valve are both connected to a wireless controller receiving end, the wireless controller receiving end interacts wirelessly with the wireless controller transmitting end, and the flow size of the first flow control valve and the second flow control valve is controlled by the wireless controller transmitting end; as the nitrogen concentration detected by the second gas source detection mechanism, the higher the detected nitrogen concentration, the smaller the nitrogen flow rate that can pass through the first flow control valve and the second flow control valve, until it is closed.

[0012] The above-mentioned degassing device for the production of hypereutectic aluminum-silicon alloy, wherein the working method of the degassing device for the production of hypereutectic aluminum-silicon alloy is as follows: nitrogen is supplied by a nitrogen storage tank and transported to the hypereutectic aluminum-silicon alloy production equipment through a gas supply device, and enters the hypereutectic aluminum-silicon alloy production equipment from a degassing inlet for degassing; the nitrogen passes through a drying mechanism, a first gas source detection mechanism and a temperature control mechanism in the gas supply pipeline in sequence, and is dried by the drying mechanism, and then is detected by the first gas source detection mechanism to detect the nitrogen concentration, and finally, after the temperature is compensated by the temperature control mechanism, It is sent into the hypereutectic aluminum-silicon alloy production equipment through the degassing inlet for degassing. During the degassing process, the gas exhausted in the hypereutectic aluminum-silicon alloy production equipment is discharged through the exhaust pipe. During the exhaust process, the gas backflow is prevented by the non-return mechanism. In addition, the second gas source detection mechanism always monitors the nitrogen concentration in the exhaust gas, and controls the supply and exhaust flow of the gas supply equipment and the exhaust equipment through the wireless controller until the nitrogen concentration detected by the second gas source detection mechanism is always maintained at 100% within 5Min-10Min. At this time, it can be confirmed that the degassing is completed and the nitrogen supply is stopped.

[0013] The beneficial effects of the present invention are:

[0014] The present invention discloses a degassing device for the production of hypereutectic aluminum-silicon alloy, comprising an air supply device and an exhaust device, wherein the air supply device comprises an air supply pipeline and a drying mechanism, a first air source detection mechanism and a temperature control mechanism sequentially arranged along the air supply pipeline, and both ends of the air supply pipeline are respectively connected to a nitrogen storage tank and a degassing inlet of a hypereutectic aluminum-silicon alloy production device, and the exhaust device comprises an exhaust pipeline and a non-return mechanism and a second air source detection mechanism sequentially arranged along the exhaust pipeline, and one end of the exhaust pipeline is connected to a degassing outlet of the hypereutectic aluminum-silicon alloy production device. The present invention has a reasonable design and a simple principle, and has the functional effects of air source drying and preheating, thereby reducing the adverse effects of degassing on the production of hypereutectic aluminum-silicon alloy. In addition, the degassing process can be effectively monitored to ensure the degassing effect, which is helpful to improve the quality of hypereutectic aluminum-silicon alloy products. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the principle of the present invention.

[0016] Figure 2 It is a schematic diagram of the principle of the present invention (the temperature control mechanism is a heat source recovery device).

[0017] Explanation of the accompanying drawings: 1. Gas supply equipment; 2. Exhaust equipment; 3. Gas supply pipeline; 4. Drying mechanism; 5. First gas source detection mechanism; 6. Temperature control mechanism; 7. Nitrogen storage tank; 8. Hypereutectic aluminum-silicon alloy production equipment; 9. Degassing inlet; 10. Exhaust pipeline; 11. Non-return mechanism; 12. Second gas source detection mechanism; 13. Wireless controller transmitting end; 14. First flow control valve; 15. Second flow control valve; 16. Wireless controller receiving end; 17. Temperature control cooling equipment; 18. Degassing outlet. DETAILED DESCRIPTION

[0018] In order to make the technical solution of the present invention clearer and more specific, the present invention is further described below in conjunction with embodiments. Any equivalent replacement of the technical features of the technical solution of the present invention and any solution derived by conventional reasoning shall fall within the protection scope of the present invention.

[0019] Embodiment 1

[0020] The present embodiment discloses a degassing device for the production of hypereutectic aluminum-silicon alloy, which is used for degassing in the production process of hypereutectic aluminum-silicon alloy. Specifically, the degassing device includes a gas supply device 1 and an exhaust device 2. The gas supply device 1 includes a gas supply pipeline 3 and a drying mechanism 4, a first gas source detection mechanism 5 and a temperature control mechanism 6 sequentially arranged along the gas supply pipeline 3. Both ends of the gas supply pipeline 3 are respectively connected to a nitrogen storage tank 7 and a degassing inlet 9 of a hypereutectic aluminum-silicon alloy production equipment 8. The exhaust device 2 includes an exhaust pipeline 10 and a non-return mechanism 11 and a second gas source detection mechanism 12 sequentially arranged along the exhaust pipeline 10. One end of the exhaust pipeline 10 is connected to a degassing outlet 18 of the hypereutectic aluminum-silicon alloy production equipment 8.

[0021] Embodiment 2

[0022] The present embodiment discloses a degassing device for the production of hypereutectic aluminum-silicon alloy, wherein the drying mechanism 4 is a gas source dryer for removing moisture that may exist in nitrogen during the supply process, the first gas source detection mechanism 5 is a nitrogen concentration sensor for monitoring the nitrogen concentration of the supplied nitrogen, the nitrogen concentration is not marked, and the initial degassing process is not included in the formal degassing process, when the nitrogen concentration is marked, the degassing process officially starts (if the gas source is qualified, the process does not exceed 5 minutes), the nitrogen is supplied by the nitrogen storage tank 7, and is transported to the hypereutectic aluminum-silicon alloy production equipment 8 through the gas supply equipment 1, and enters the hypereutectic aluminum-silicon alloy production equipment from the degassing inlet 9 for degassing; the nitrogen passes through the drying mechanism 4, the first gas source detection mechanism 5 and the temperature control mechanism 6 in the gas supply pipeline 3 in turn, and is dried by the drying mechanism 4, then detected by the first gas source detection mechanism 5 to detect the nitrogen concentration, and finally, after the temperature is compensated by the temperature control mechanism 6, it is sent to the hypereutectic aluminum-silicon alloy production equipment through the degassing inlet 9.

[0023] Embodiment 3

[0024] The degassing device for the production of hypereutectic aluminum-silicon alloy disclosed in the present embodiment preheats the supplied nitrogen during the nitrogen supply process in order to reduce the impact of the degassing process on the production of hypereutectic aluminum-silicon alloy (such as heat loss, etc.), wherein the temperature control mechanism 6 can be a temperature control heater or a heat source recovery device. The temperature control heater is used for direct heating of the nitrogen, and the heat source recovery device is connected to the temperature control cooling device 17 of the hypereutectic aluminum-silicon alloy production equipment 8, recovers the heat discharged by the temperature control cooling device 17 during the cooling process, and uses it for nitrogen temperature compensation, thereby achieving the effect of energy saving and emission reduction.

[0025] Embodiment 4

[0026] The degassing device for producing hypereutectic aluminum-silicon alloy disclosed in this embodiment, wherein the check mechanism 11 is a check valve to prevent gas backflow during the degassing process, and the second gas source detection mechanism 12 is a nitrogen concentration sensor for detecting the nitrogen concentration of the exhaust gas to determine whether the degassing is completed;

[0027] During the degassing process, the gas exhausted from the hypereutectic aluminum-silicon alloy production equipment 8 is discharged through the exhaust pipe 10. During the exhaust process, the gas backflow is prevented by the non-return mechanism 11. In addition, the second gas source detection mechanism 12 constantly monitors the nitrogen concentration in the exhaust gas until the detected nitrogen concentration remains at 100% within a certain period. At this time, it can be confirmed that the degassing is completed and the nitrogen supply is stopped.

[0028] Embodiment 5

[0029] The present embodiment discloses a degassing device for the production of hypereutectic aluminum-silicon alloy. To achieve automatic control of the degassing process, the present embodiment provides a wireless controller transmitter 13 on the second gas source detection mechanism 12, and provides a first flow control valve 14 and a second flow control valve 15 on the gas supply pipeline 3 and the exhaust pipeline 10, respectively. The first flow control valve 14 and the second flow control valve 15 are both connected to a wireless controller receiver 16, and the wireless controller receiver 16 interacts wirelessly with the wireless controller transmitter 13. The flow rates of the first flow control valve 14 and the second flow control valve 15 are controlled by the wireless controller transmitter 13.

[0030] As the nitrogen concentration detected by the second gas source detection mechanism 12 increases, the nitrogen flow rate that can pass through the first flow control valve 14 and the second flow control valve 15 decreases until they are closed.

[0031] Embodiment 6

[0032] The present embodiment discloses a degassing device for producing hypereutectic aluminum-silicon alloy, wherein the working method of the degassing device for producing hypereutectic aluminum-silicon alloy is as follows: nitrogen is supplied by a nitrogen storage tank 7, and is transported to a hypereutectic aluminum-silicon alloy production equipment 8 through a gas supply device 1, and enters the hypereutectic aluminum-silicon alloy production equipment from a degassing inlet 9 for degassing; the nitrogen passes through a drying mechanism 4, a first gas source detection mechanism 5 and a temperature control mechanism 6 in a gas supply pipeline 3 in sequence, and is dried by the drying mechanism 4, and then is detected by the first gas source detection mechanism 5 to detect the nitrogen concentration, and finally, is passed through the temperature control mechanism 6 to compensate for the temperature. After the temperature reaches 400 °C, it is sent into the hypereutectic aluminum-silicon alloy production equipment through the degassing inlet 9 for degassing. During the degassing process, the gas exhausted from the hypereutectic aluminum-silicon alloy production equipment 8 is discharged through the exhaust pipe 10. During the exhaust process, the gas backflow is prevented by the non-return mechanism 11. In addition, the second gas source detection mechanism 12 always monitors the nitrogen concentration in the exhaust gas, and controls the supply and exhaust flow of the gas supply device 1 and the exhaust device 2 through the wireless controller until the nitrogen concentration detected by the second gas source detection mechanism 12 is always maintained at 100% within 5 Min-10 Min. At this time, it can be confirmed that the degassing is completed and the nitrogen supply is stopped.

[0033] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A degassing device for the production of hypereutectic aluminum-silicon alloy, characterized in that: The invention comprises an air supply device (1) and an exhaust device (2), wherein the air supply device (1) comprises an air supply pipeline (3) and a drying mechanism (4), a first air source detection mechanism (5) and a temperature control mechanism (6) arranged in sequence along the air supply pipeline (3), and the two ends of the air supply pipeline (3) are respectively connected to a nitrogen storage tank (7) and a degassing inlet (9) of a hypereutectic aluminum-silicon alloy production device (8), and the exhaust device (2) comprises an exhaust pipeline (10) and a non-return mechanism (11) and a second air source detection mechanism (12) arranged in sequence along the exhaust pipeline (10), and one end of the exhaust pipeline (10) is connected to a degassing outlet (18) of the hypereutectic aluminum-silicon alloy production device (8); The drying mechanism (4) is an air source dryer, and the first air source detection mechanism (5) is a nitrogen concentration sensor. Nitrogen is supplied by a nitrogen storage tank (7) and transported to the hypereutectic aluminum-silicon alloy production equipment (8) through the air supply device (1), and enters the hypereutectic aluminum-silicon alloy production equipment from the degassing inlet (9) for degassing. The nitrogen passes through the drying mechanism (4), the first air source detection mechanism (5) and the temperature control mechanism (6) in the air supply pipeline (3) in sequence, and is dried by the drying mechanism (4). Subsequently, the nitrogen is detected by the first air source detection mechanism (5) to detect the nitrogen concentration. Finally, after the temperature is compensated by the temperature control mechanism (6), the nitrogen is sent to the hypereutectic aluminum-silicon alloy production equipment (8) through the degassing inlet (9). The non-return mechanism (11) is a non-return valve, and the second gas source detection mechanism (12) is a nitrogen concentration sensor; during the degassing process, the gas exhausted from the hypereutectic aluminum-silicon alloy production equipment (8) is discharged through the exhaust pipe (10), and during the discharge process, the non-return mechanism (11) prevents the gas from flowing back. In addition, the second gas source detection mechanism (12) constantly monitors the nitrogen concentration in the exhaust gas until, within a certain period, the detected nitrogen concentration is always maintained at 100%, at which time, it can be confirmed that the degassing is completed and the nitrogen supply is stopped; The second gas source detection mechanism (12) is connected to a wireless controller transmitter (13); the gas supply pipeline (3) and the gas exhaust pipeline (10) are respectively provided with a first flow control valve (14) and a second flow control valve (15); the first flow control valve (14) and the second flow control valve (15) are both connected to a wireless controller receiver (16); the wireless controller receiver (16) interacts wirelessly with the wireless controller transmitter (13); the flow rates of the first flow control valve (14) and the second flow control valve (15) are controlled by the wireless controller transmitter (13); as the nitrogen concentration detected by the second gas source detection mechanism (12) increases, the nitrogen flow rates that can pass through the first flow control valve (14) and the second flow control valve (15) decrease until the valves are closed.

2. The degassing device for producing hypereutectic aluminum-silicon alloy according to claim 1, characterized in that: The temperature control mechanism (6) is a temperature control heater.

3. The degassing device for producing hypereutectic aluminum-silicon alloy according to claim 1, characterized in that: The temperature control mechanism (6) is a heat source recovery device, which is connected to the temperature control cooling device (17) of the hypereutectic aluminum-silicon alloy production equipment (8) to recover heat for nitrogen temperature compensation.

4. The degassing device for producing hypereutectic aluminum-silicon alloy according to claim 1, characterized in that: The working method of the degassing device for producing hypereutectic aluminum-silicon alloy is as follows: nitrogen is supplied from a nitrogen storage tank (7) and transported to a hypereutectic aluminum-silicon alloy production device (8) through a gas supply device (1), and enters the hypereutectic aluminum-silicon alloy production device from a degassing inlet (9) for degassing; the nitrogen passes through a drying mechanism (4), a first gas source detection mechanism (5) and a temperature control mechanism (6) in the gas supply pipeline (3), and is dried by the drying mechanism (4), and then is detected by the first gas source detection mechanism (5) to detect the nitrogen concentration, and finally, after being compensated for the temperature by the temperature control mechanism (6), is discharged through the degassing inlet (9). ) is sent into the hypereutectic aluminum-silicon alloy production equipment for degassing; during the degassing process, the gas exhausted from the hypereutectic aluminum-silicon alloy production equipment (8) is discharged through the exhaust pipe (10), and during the exhaust process, the gas backflow is prevented by the check mechanism (11). In addition, the second gas source detection mechanism (12) constantly monitors the nitrogen concentration in the exhaust gas, and controls the supply and exhaust flow of the gas supply device (1) and the exhaust device (2) through a wireless controller until the nitrogen concentration detected by the second gas source detection mechanism (12) is always maintained at 100% within 5 minutes to 10 minutes. At this time, it can be confirmed that the degassing is completed and the nitrogen supply is stopped.

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