Ferroalloy product smelting circulating casting system and method

Abstract

The invention relates to the technical field of metal casting, and provides an iron alloy product smelting circulating casting system and method.The casting system comprises a material storage unit, a material control unit, a splash-proof unit and a circulating unit; the material control unit is used for discharging the metal liquid in a vortex mode, so that metal residues float to the surface of the liquid and are effectively removed before the metal liquid is poured into the mold; and the splash-proof unit is used for reducing the content of air carried during casting by controlling the height difference between the molten metal and the mold, and the reduction of the height difference is also used for preventing the molten metal from splashing, so that the working environment and workers are protected. Metal residues can be promoted to float upwards for impurity removal treatment during casting operation, meanwhile, the effect of quantitative control over molten metal is achieved, raw materials are saved, the qualified rate of products is ensured, in addition, gas can be effectively prevented from being brought in to form bubbles during discharging, the situation that molten metal splashes is prevented, and the service life of the molten metal is prolonged. Therefore, the working environment and workers are protected.

Description

Technical Field

[0001] The present invention relates to the technical field of metal casting, and more specifically, to a ferroalloy product smelting circulation casting system and method. Background Art

[0002] Ferroalloy casting refers to the process of injecting liquid ferroalloy (commonly known as molten iron) into a mold to solidify it into an ingot. It is widely used in industrial production. The smelting and casting process is an important link in ferroalloy production. Through this process, ferroalloy products with the required shape and performance can be obtained.

[0003] At present, it is found in actual casting operations that due to the height difference, when the metal liquid is poured into the mold, the mold has an open structure above, which causes the metal liquid to splash when pouring. This not only brings in a large amount of air to form bubbles inside the product, but also splashes outward, affecting the working environment and even injuring the staff.

[0004] In order to solve the above problems, the present application proposes a ferroalloy product smelting cycle casting system and method. Summary of the invention

[0005] The object of the present invention is to provide a ferroalloy product smelting cycle casting system and method, which reduces the bubble rate inside the product and ensures the safe casting operation.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] A ferroalloy product smelting circulation casting system, the casting system comprising:

[0008] Material storage unit, material control unit, splash protection unit and circulation unit;

[0009] The material control unit discharges the molten metal in a vortex-like manner, causing the metal residue to float to the surface of the liquid, so as to be effectively removed before the molten metal is poured into the mold;

[0010] The splash-proof unit controls the height difference between the molten metal and the mold to reduce the air content carried during casting. The reduction of the height difference is also used to prevent the molten metal from splashing, protecting the working environment and workers;

[0011] The circulation unit is used to install the mold and distribute it evenly around the circumference to achieve continuous circulation casting operation, shorten the production cycle and reduce the difficulty of casting work.

[0012] On the other hand, a method for smelting and circulating casting of a ferroalloy product:

[0013] S1: First, the prepared 1400°C molten iron is temporarily stored through a storage unit, and is reheated in real time to keep its temperature at 1380-1430°C;

[0014] S2: When the mold is sent to the predetermined position by the positioning unit combined with the rotary table, the material receiving unit transmits a signal to start the casting operation;

[0015] S3: The lifting unit receives the signal and presses the slide bar downward to make the ball separate from the lower conical surface of the discharge port to release the seal. At this time, the shaft block outside the slide bar is located at the bottom area of ​​the discharge hole. The spiral groove allows the molten metal to form a vortex during discharge, so as to promote the floating of metal residues for slag discharge.

[0016] S4: The falling molten metal is gathered through the lower section of the slide bar to prevent it from scattering to control the temperature. It is also prevented from contacting with a large amount of air to prevent bubbles from appearing inside the product. At the same time, the molten metal is heated in real time by the heating unit to keep the temperature of the molten metal at 1380-1400℃.

[0017] S5: When the molten metal falls to the bottom area of ​​the slide bar, it is guided outward by the conical block below it, which forms a buffering effect and prevents the molten metal from falling vertically and causing a large amount of splashing;

[0018] S6: After the metal liquid is built, the receiving unit transmits a signal to control the slide bar to move upward so that the ball blocks the lower conical surface of the discharge port to form a seal. Finally, the mold is directly sent out through the rotating workbench for unloading and transportation.

[0019] Beneficial effects of the present invention:

[0020] The present invention forms a vortex in the metal liquid at the feeding port, so that the metal residue is drawn into the metal liquid through the vortex core and floats to the surface of the liquid with the movement of the vortex, so that the metal residue is effectively removed before being poured into the mold, thereby reducing the inclusions in the ferroalloy product and improving the cleanliness and quality of the casting.

[0021] When the molten metal is discharged, the invention uses a flow guide unit to smoothly pour it into the mold, greatly reducing the height difference to avoid carrying a large amount of air into the mold, effectively reducing the bubble formation filter inside the ferroalloy product to ensure its production quality, and also preventing the molten metal from splashing outward when falling, protecting the working environment while making the casting operation safer and more efficient;

[0022] The present invention combines a circulation unit with a mold, and can replace the mold in real time during the casting operation to achieve a continuous circulation casting operation. A plurality of ferroalloy products can be produced in a short time, which greatly shortens the production cycle and reduces the working difficulty, facilitating the efficient casting operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is a schematic diagram of the overall process of the casting system of the present invention;

[0025] Figure 2 It is a schematic diagram of the overall appearance of the present invention;

[0026] Figure 3 It is a schematic diagram of a circulation unit of the present invention;

[0027] Figure 4 It is a schematic diagram of a material storage unit of the present invention;

[0028] Figure 5 It is a material storage unit of the present invention and a partially enlarged schematic diagram thereof;

[0029] Figure 6 It is a schematic diagram of the material control unit and the splash-proof unit of the present invention;

[0030] 1. Mold; 2. Conical material box; 3. Lifting frame; 4. Electric telescopic device; 5. Sliding rod; 6. Feeding port; 7. Tube body; 8. Shaft block; 9. Spiral groove; 10. Ball; 11. Conical block; DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1 As shown, the present invention provides a ferroalloy product smelting circulation casting system, the casting system comprising:

[0033] Material storage unit, material control unit, splash protection unit and circulation unit.

[0034] The material control unit discharges the molten metal in a vortex manner so that the metal residue floats to the surface of the liquid and is effectively removed before the molten metal is poured into the mold.

[0035] The splash-proof unit controls the height difference between the molten metal and the mold 1 to reduce the air content carried during casting. The reduction in the height difference is also used to prevent the molten metal from splashing, thereby protecting the working environment and the staff.

[0036] The circulation unit is used to install the mold 1 and evenly distribute it around the circumference to achieve continuous circulation casting operation, shorten the production cycle and reduce the difficulty of casting work.

[0037] The storage unit is used to store the prepared molten metal, temporarily store it inside and maintain the temperature, which is convenient for the casting operation. The material control unit is composed of a lifting unit, an eddy current unit and a sealing unit. The splash-proof unit is composed of a heating unit, a unloading unit and a guide unit. The circulation unit is composed of a positioning unit, a receiving unit and a unloading unit.

[0038] In the specific implementation, the molten metal is first diverted through the conical material box 2 evenly distributed under the storage unit, and the installation of the mold 1 is coordinated to form a multi-directional simultaneous casting effect. At this time, when the molten metal is discharged, the eddy current unit causes it to form a vortex at the discharge port 6 to promote the internal metal residue to float up. When the metal residue floats to the surface of the molten metal, Jinke performs impurity removal treatment, and then blocks the discharge port 6 through the sealing unit to control the flow rate of the molten metal being discharged. While achieving precise casting production operations, the discharge unit and the guide unit can also make the molten metal gather and fall to prevent it from being dispersed everywhere, and guide it outward when it falls to the lowest point, which can form a buffer and avoid splashing caused by vertical falling. After this arrangement, the quality and safety of the smelting and casting operations of ferroalloy products can be ensured.

[0039] Please continue to refer to Figure 1 , the electric telescopic device 4 installed in the lifting unit drives the slide bar 5 in the storage unit to slide up and down to control the switch state of the discharge port 6 of the storage unit. The electric telescopic device 4 is located above the storage unit and is used to connect the top of the adjacent slide bar 15; when the slide bar 5 moves down, the shaft block 8 with the spiral groove 9 on its outer side is used to fill the discharge port 6, and the spiral groove 9 is used to cause the metal liquid to generate eddy current when it flows down, so as to achieve the effect of promoting the floating of metal residue; in addition, when the slide bar 5 slides down, the open hole structure in which the upper and lower conical holes of the discharge port 6 are connected is used, and the sphere 10 installed on the outer side of the slide bar 5 and located below the shaft block 8 is driven by the slide bar 5 to separate from the inclined surface of the lower conical hole to release the seal of the discharge port 6, and the signal transmission of the material receiving unit is combined to achieve the effect of controlling the discharge amount of the metal.

[0040] Please continue to refer to Figure 1A molten metal flow pipe 7 is provided at the lower end of the discharge port 6, and a heating unit is added on the outside of the pipe 7 to keep the temperature of the molten metal in the pipe 7 stable when it flows, prevent a large temperature change caused by discharge, and ensure the quality of the casting operation; in addition, the lower section of the slide bar 5 is located inside the pipe 7, which is used to gather the downstream molten metal to keep it in a gathered state to prevent the rapid loss of heat. When the molten metal flows to the bottom of the slide bar 5, the upper inclined surface of the outer conical block 11 is used to guide the molten metal to the outer area, which can form a buffer and prevent the molten metal from falling vertically and causing splashing.

[0041] Please continue to refer to Figure 1 After the mold 1 is installed on the rotary workbench through the positioning unit, it is rotated and sent to the bottom of the pipe 7. At this time, the material receiving unit releases a signal to control the slide bar 5 and its ball 10 to release the seal of the discharge port 6 for casting operation. After a certain amount of molten metal flows out, the sealing ball is controlled again to seal the discharge port 6. Finally, the mold 1 is rotated and sent out, and transferred to other processes by the unloading unit.

[0042] A method for smelting and circulating casting of ferroalloy products, comprising the following steps:

[0043] Step 1: First, the prepared 1420°C molten iron is temporarily stored through a storage unit, and secondary heating is performed in real time to keep its temperature at 1380-1430°C;

[0044] Step 2: When the mold 1 is sent to the predetermined position by the positioning unit in combination with the rotary table, the receiving unit transmits a signal to start the casting operation;

[0045] Step 3: The lifting unit receives the signal and presses the slide bar 5 downward to make the ball 10 separate from the lower conical surface of the discharge port 6 to release the seal. At this time, the shaft block 8 outside the slide bar 5 is located at the bottom area of ​​the discharge hole. The spiral groove 9 allows the molten metal to form a vortex during discharge, so as to promote the floating of metal residues for slag discharge.

[0046] Step 4: The falling molten metal is gathered by the lower section of the slide bar 5 to prevent it from scattering to control the temperature, and prevent it from contacting with a large amount of air to prevent bubbles from appearing inside the product. At the same time, the molten metal is heated in real time by the heating unit to keep the temperature of the molten metal at 1380-1400°C;

[0047] Step 5: When the molten metal falls to the bottom area of ​​the slide bar 5, it is guided outward by the conical block 11 with a 45° inclination angle below it, which forms a buffering effect and prevents the molten metal from splashing when it falls vertically;

[0048] Step 6: After the metal liquid is built, the receiving unit transmits a signal, controls the slide bar 5 to move upward, so that the ball 10 blocks the lower conical surface of the discharge port 6 to form a seal, and finally directly sends the mold 1 out through the rotating workbench for unloading and transportation; in addition, during the discharge of the metal liquid, the electric telescopic device 4 drives the slide bar 5 to move up and down multiple times to promote the discharge of the metal liquid and prevent residue.

[0049] It can be understood that the present invention can promote the floating of metal residues for impurity removal during casting operations, and at the same time achieve the effect of quantitative control of the molten metal to save raw materials and ensure the qualified rate of products. In addition, it can effectively prevent the introduction of gas to form bubbles during material discharge and prevent the occurrence of molten metal splashing to protect the working environment and staff.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0051] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A ferroalloy product smelting circulation casting system, characterized in that: The casting system comprises: Material storage unit, material control unit, splash protection unit and circulation unit; The material control unit discharges the molten metal in a vortex-like manner, causing the metal residue to float to the surface of the liquid, so as to be effectively removed before the molten metal is poured into the mold; The splash-proof unit controls the height difference between the molten metal and the mold to reduce the air content carried during casting. The reduction of the height difference is also used to prevent the molten metal from splashing, protecting the working environment and workers; The circulation unit is used to install the mold and distribute it evenly around the circumference to achieve continuous circulation casting operation, shorten the production cycle and reduce the difficulty of casting work.

2. A ferroalloy product smelting cycle casting system and method according to claim 1, characterized in that: The storage unit is used to store the prepared molten metal so that it is temporarily stored inside and the temperature is maintained to facilitate the casting operation. The material control unit is composed of a lifting unit, a vortex unit and a sealing unit. The splash-proof unit is composed of a heating unit, a feeding unit and a guide unit. The circulation unit is composed of a positioning unit, a receiving unit and a feeding unit.

3. The ferroalloy product smelting circulation casting system according to claim 2, characterized in that: An electric telescoping device is arranged in the lifting unit, which is used to drive the sliding rod in the material storage unit to slide up and down, and is used to control the switch state of the material discharge port of the material storage unit.

4. The ferroalloy product smelting circulation casting system according to claim 3, characterized in that: When the slide bar moves downward, the feed opening is blocked by the shaft block with a spiral groove on the outer side thereof, so as to guide the molten metal to generate eddy current and form an eddy current unit.

5. The ferroalloy product smelting circulation casting system according to claim 3, characterized in that: The feed opening is a structure of upper and lower conical holes. When the slide bar slides down, the sphere below the shaft block separates from the lower conical surface to release the seal of the feed opening, which is used to control the amount of metal fed and form a sealing unit.

6. The ferroalloy product smelting circulation casting system according to claim 2, characterized in that: The heating unit is located outside the tube body below the discharge port and is used to maintain the temperature of the molten metal when it falls, thereby ensuring the quality of the casting operation.

7. The ferroalloy product smelting circulation casting system according to claim 3, characterized in that: The lower section of the slide bar is located inside the heating unit and is used to guide the molten metal to fall and keep it in a gathered state when falling, so as to form a material discharge unit.

8. The ferroalloy product smelting circulation casting system according to claim 3, characterized in that: The lower end of the slide bar is provided with a conical block with an inclination angle of 45°, which is used to guide the molten metal laterally to prevent splashing caused by vertical falling, thereby forming a guide unit.

9. The ferroalloy product smelting circulation casting system according to claim 2, characterized in that: The positioning unit is used to fix the mold on the rotating worktable. When the mold rotates to a predetermined position, the material receiving unit releases a signal to perform a casting operation. The unloading unit is used to move the used mold out of the rotating worktable.

10. A method for smelting and circulating casting of ferroalloy products, used in a smelting and circulating casting system for ferroalloy products according to any one of claims 1 to 9, characterized in that: S1: First, the prepared 1400°C molten iron is temporarily stored through a storage unit, and is reheated in real time to keep its temperature at 1380-1430°C; S2: When the mold is sent to the predetermined position by the positioning unit combined with the rotary table, the receiving unit transmits a signal to start the casting operation; S3: The lifting unit receives the signal and presses the slide bar downward to make the ball separate from the lower conical surface of the discharge port to release the seal. At this time, the shaft block outside the slide bar is located at the bottom area of ​​the discharge hole. The spiral groove allows the molten metal to form a vortex during discharge, so as to promote the floating of metal residues for slag discharge. S4: The falling molten metal is gathered through the lower section of the slide bar to prevent it from scattering to control the temperature. At the same time, it is prevented from contacting with a large amount of air to prevent bubbles from appearing inside the product. At the same time, the molten metal temperature is kept at 1380-1400℃ by real-time heating through the heating unit; S5: When the molten metal falls to the bottom area of ​​the slide bar, it is guided outward by the conical block below it, which forms a buffering effect and prevents the molten metal from splashing vertically; S6: After the metal liquid is built, the receiving unit transmits a signal to control the slide bar to move upward so that the ball blocks the lower conical surface of the discharge port to form a seal. Finally, the mold is directly sent out through the rotating workbench for unloading and transportation.

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