Iron alloy casting device

Abstract

The utility model relates to the technical field of alloy casting equipment, and discloses an iron alloy casting device which comprises a melting furnace, a centrifugal combined mold, a supporting seat, a rotary driving mechanism and the like. Wherein the centrifugal combined mold comprises a first mold, a second mold, an opening and closing assembly and a centrifugal assembly, opening and closing of the mold are achieved through the opening and closing assembly, the centrifugal assembly enables the mold to rotate to generate centrifugal force, bubbles are discharged, and the mold is evenly filled with molten liquid. An exhaust pipe fitting is arranged in the melting furnace, and gas in the mold can be exhausted in the casting process. When the device works, the dies are combined, the melting furnace is rotated to the position above the dies after raw materials are heated and melted, the valve is opened to enable melt to enter the dies, the centrifugal assembly is started, gas is exhausted through the exhaust pipe fitting, the valve is closed after the melt is filled, the overturning device enables redundant melt to flow back, a blank is taken out after being cooled, and next-time casting is carried out. The device is beneficial to emptying gas in the mold and improving the iron alloy quality.

Description

Technical Field

[0001] This utility model relates to the technical field of alloy casting equipment, specifically to a ferroalloy casting device. Background Technology

[0002] Ferroalloy casting process includes steps such as mold preparation, ferroalloy melting, casting, cooling and solidification, and demolding. Existing ferroalloy casting equipment typically includes the following components: a furnace for melting ferroalloy raw materials, a gate and runner for introducing the molten ferroalloy into the mold, a mold for forming the casting, and a cooling system for accelerating the cooling and solidification of the casting.

[0003] When existing casting equipment pours molten iron alloy solution directly into the mold, the complex internal structure of the mold contains dead corners or narrow spaces, which can easily trap air. This results in air inside the mold that is difficult to expel, leading to the formation of air bubbles and the inability to expel the air inside the mold in a timely manner.

[0004] This process draws air into the molten iron alloy, forming bubbles. These bubbles cannot escape during the solidification of the iron alloy and remain inside the casting. Because these bubbles create pores inside the casting, they reduce the density and strength of the casting. Furthermore, the presence of these bubbles makes the internal structure of the casting porous, affecting its mechanical properties and service life.

[0005] Therefore, we propose a ferroalloy casting apparatus to solve the problems mentioned above. Utility Model Content

[0006] The purpose of this invention is to provide a ferroalloy casting device to solve the problem mentioned in the background art that when the existing casting device directly pours the molten ferroalloy solution into the mold, air exists inside the mold and is difficult to expel, which easily leads to the formation of bubbles.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0008] A ferroalloy casting apparatus includes a melting furnace with an arc-shaped feeding port, a centrifugal combined mold, a support base, and a rotary drive mechanism for rotating the melting furnace and the centrifugal combined mold. The rotary drive mechanism is mounted on the support base, and the melting furnace and the centrifugal combined mold are mounted inside the support base. An exhaust pipe is provided inside the melting furnace, and a guide pipe for discharging material is connected to one end of the centrifugal combined mold near the melting furnace.

[0009] As a further embodiment of this utility model: the exhaust pipe includes an exhaust pipe and a floating valve. The exhaust pipe and the material guide pipe are located on the same axis. Both ends of the exhaust pipe penetrate the interior of the melting furnace and are sleeved inside the material guide pipe.

[0010] As a further embodiment of this utility model: the end of the air guide tube near the material guide tube is a conical air inlet, and is flush with the outlet of the material guide tube.

[0011] As a further embodiment of this utility model: the floating valve includes an exhaust rod and a float. The float is fixedly connected to one end of the exhaust rod. The float is a frustum shape that matches the conical air inlet. The exhaust rod is slidably sleeved inside the air guide pipe. An exhaust groove is provided on the surface of the exhaust rod. A limit block is provided at the end of the exhaust rod away from the float.

[0012] As a further embodiment of this utility model: the feed pipe is connected to the feed port of the centrifugal combined mold, and a first electric telescopic valve is installed on the feed pipe. The first electric telescopic valve has two cooperating valve plates inside.

[0013] As a further embodiment of this utility model: the rotary drive mechanism includes a support frame and a geared motor. The support frame is fixedly connected to the outside of the melting furnace. The centrifugal combined mold is installed inside the support frame. There are two support seats symmetrically arranged on both sides of the support frame. Rotary shafts are fixedly connected to both sides of the support frame. Bearings are provided inside the support seats. The rotating shafts are sleeved inside the bearings. The geared motor is fixedly connected to the support seat on one side. The drive end of the geared motor is fixedly connected to the rotating shaft on one side.

[0014] As a further embodiment of this utility model: the centrifugal combined mold includes a first mold and a second mold adapted to the first mold, a second electric telescopic valve, an opening and closing component and a centrifugal component, and the ends of the first mold and the second mold near the guide tube are respectively provided with semi-circular feeding tightening ports.

[0015] As a further embodiment of this utility model: the second electric telescopic valve is divided into two parts, which have two sets of electric actuators and are respectively installed at the feed inlets of the first mold and the second mold.

[0016] As a further embodiment of this utility model: the centrifugal assembly includes a rotating disk and a servo motor that drives the rotating disk to rotate. The servo motor is fixedly connected to the support frame, and the first mold and the second mold are slidably connected to the side surface of the rotating disk near the melting furnace.

[0017] As a further embodiment of this utility model: the opening and closing assembly includes a forward threaded rod, a reverse threaded rod, a dual-axis motor, and two guide blocks. The forward threaded rod and the reverse threaded rod are respectively fixedly connected to the two output shafts of the dual-axis motor. The two guide blocks are respectively threadedly engaged with the forward threaded rod and the reverse threaded rod. The rotating disk has two drive grooves at both ends on its surface near the centrifugal combined mold. The two guide blocks are respectively slidably connected inside the two guide blocks, and the two guide blocks are respectively fixedly connected to the first mold and the second mold.

[0018] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0019] This invention improves the quality of ferroalloy castings by venting gas from the mold and removing air bubbles from the ferroalloy molten metal. The rotation of the centrifugal combined mold generates centrifugal force in the molten metal entering the mold cavity, causing air bubbles in the melt to escape more easily and accumulate at the edge or top of the mold. This reduces the number of air bubbles remaining in the casting, improving its quality and performance. During the ferroalloy molten metal casting process, gas inside the mold enters the venting pipe through the venting groove on the venting rod. The venting rod is slidably fitted inside the venting pipe, with a float fixedly connected to one end. When there is no ferroalloy molten metal inside the mold, the float slides downwards under gravity, connecting the venting groove on the venting rod to the venting pipe, allowing gas inside the mold to escape smoothly. When the mold is full of ferroalloy molten metal, the melt pushes the float upwards, causing it to fit tightly against the conical air inlet, preventing ferroalloy molten metal from entering the venting pipe. Simultaneously, the blockage of the float prevents gas from escaping from the mold, thus ensuring stable pressure inside the mold. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the connection structure between the gas guide pipe and the melting furnace of this utility model;

[0022] Figure 3 This is a schematic diagram of the connection structure between the exhaust rod and the air guide pipe of this utility model;

[0023] Figure 4 This is a schematic diagram of the opening and closing component of this utility model.

[0024] The components are as follows: 1. Melting furnace; 2. Support base; 3. Material guide pipe; 4. Air guide pipe; 5. Conical air inlet; 11. Exhaust rod; 12. Float ball; 13. Exhaust groove; 14. Limiting block; 15. First electric telescopic valve; 16. Valve plate; 17. Support frame; 18. Gear motor; 21. First mold; 22. Second mold; 23. Second electric telescopic valve; 26. Semi-circular feed tightening port; 28. Rotary disk; 29. ​​Servo motor; 30. Forward threaded rod; 31. Reverse threaded rod; 32. Dual-axis motor; 33. Guide block; 34. Drive groove. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1:

[0027] Please see Figure 1-4 This utility model provides a technical solution:

[0028] A ferroalloy casting apparatus includes a melting furnace 1 with an arc-shaped feeding port, a centrifugal combined mold, support bases 2, and a rotary drive mechanism. A sealed valve body with a control switch is installed inside the arc-shaped feeding port. A support frame 17 is fixedly connected to the outside of the melting furnace 1. The centrifugal combined mold is installed inside the support frame 17. Two support bases 2 are symmetrically arranged on both sides of the support frame 17. Rotary shafts are fixedly connected to both sides of the support frame 17. Bearings are installed inside the support bases 2, and the rotating shafts are sleeved inside the bearings. A geared motor 18 is fixedly installed on one side of the support base 2. The drive end of the geared motor 18 is connected to... The rotating shaft is fixedly connected, and the geared motor 18 drives the rotating shaft to rotate, causing the support frame 17 and the melting furnace 1 and centrifugal combined mold inside to rotate accordingly. One end of the melting furnace 1 near the centrifugal combined mold is connected to a material guide pipe 3 for discharging. The material guide pipe 3 is connected to the inlet of the centrifugal combined mold. A first electric telescopic valve 15 is installed on the material guide pipe 3. The first electric telescopic valve 15 controls the opening and closing of the material guide pipe 3. The first electric telescopic valve 15 has two cooperating valve plates 16 inside. The opening and closing are controlled by controlling the extension and retraction of the two valve plates 16.

[0029] The centrifugal combined mold includes a first mold 21 and a second mold 22, an opening and closing assembly, and a centrifugal assembly. The first mold 21 and the second mold 22 cooperate with each other. The ends of the first mold 21 and the second mold 22 near the guide tube 3 are respectively provided with semi-circular feed tightening ports 26. When the two feed tightening ports are in contact, their inner sides are sealed with the port of the guide tube 3. The second electric telescopic valve 23 is divided into two parts, which has two sets of electric actuators and is respectively installed at the feed ports of the first mold 21 and the second mold 22. The opening and closing of the feed ports of the first mold 21 and the second mold 22 are controlled by the extension and retraction of the valve plate 16 of the second electric telescopic valve 23.

[0030] The centrifugal assembly includes a rotating disk 28 and a servo motor 29 that drives the rotating disk 28 to rotate. The servo motor 29 is fixedly connected to the support frame 17. The first mold 21 and the second mold 22 are slidably connected to the side surface of the rotating disk 28 near the melting furnace 1.

[0031] The opening and closing assembly includes a forward threaded rod 30, a reverse threaded rod 31, a dual-axis motor 32, and two guide blocks 33. The forward threaded rod 30 and the reverse threaded rod 31 are fixedly connected to the two output shafts of the dual-axis motor 32, and the two guide blocks 33 are threadedly engaged with the forward threaded rod 30 and the reverse threaded rod 31, respectively. The rotating disk 28 has two drive grooves 34 on its surface near the centrifugal combination mold. The two guide blocks 33 are slidably connected inside the two drive grooves 34, and the two guide blocks 33 are fixedly connected to the first mold 21 and the second mold 22, respectively. The dual-axis motor 32 drives the forward threaded rod 30 and the reverse threaded rod 31 to rotate simultaneously, so that the two guide blocks 33 on the forward threaded rod 30 and the reverse threaded rod 31 move closer or further away. The first mold 21 and the second mold 22 are combined or separated under the drive of the guide blocks 33.

[0032] When the first mold 21 and the second mold 22 are combined, the two feed ports of the centrifugal combined mold are combined, and the guide pipe 3 is connected to the feed port of the centrifugal combined mold, thereby injecting iron alloy solution into the interior of the centrifugal combined mold.

[0033] The servo motor 29 drives the rotating disk 28 to rotate, thereby rotating the centrifugal combined mold. This generates centrifugal force in the molten titanium alloy entering the cavities of the first mold 21 and the second mold 22. During the casting process of the molten iron alloy, the centrifugal force generated by the mold rotation causes air bubbles in the molten metal to be subjected to outward centrifugal force, making it easier for them to escape from the molten metal and accumulate at the edge or top of the mold. This reduces the amount of air bubbles remaining in the casting, improving the quality and performance of the casting.

[0034] Furthermore, the melting furnace 1 is equipped with an exhaust pipe, which includes a gas guide pipe 4 and a floating valve. The gas guide pipe 4 and the material guide pipe 3 are located on the same axis, and both ends of the gas guide pipe 4 penetrate the interior of the melting furnace 1. The end of the gas guide pipe 4 near the material guide pipe 3 is a conical air inlet 5, which is flush with the outlet of the material guide pipe 3. The floating valve includes an exhaust rod 11 and a float 12. The float 12 is fixedly connected to one end of the exhaust rod 11. The float 12 is a frustum shape that matches the conical air inlet 5. The exhaust rod 11 is slidably sleeved inside the gas guide pipe 4. An exhaust groove 13 is provided on the surface of the exhaust rod 11. A limit block 14 is provided at the end of the exhaust rod 11 away from the float 12, which limits the sliding inside the gas guide pipe 4. Its function is to prevent the exhaust rod 11 from detaching from the gas guide pipe 4.

[0035] The first electric telescopic valve 15 and the second electric telescopic valve 23 are both double-plate electric telescopic valves 16, and their internal connection structure is existing known technology.

[0036] The working principle of this utility model:

[0037] In the initial state, the first mold 21 and the second mold 22 are in a combined state. The melting furnace 1 is located below the centrifugal combined mold. Ferroalloy raw materials are added into the melting furnace 1 through the arc-shaped feeding port. After the melting furnace 1 heats and melts the raw materials, the rotating shaft is driven by the reduction motor 18 on the support base 2. The rotating shaft drives the support frame 17 and the melting furnace 1 and centrifugal combined mold inside to rotate accordingly. The melting furnace 1 is rotated to the top of the centrifugal combined mold and then stops rotating. First, the second electric telescopic valve 23 is opened, and then the first electric telescopic valve 15 is opened, so that the molten ferroalloy inside the melting furnace 1 enters the first mold through the guide pipe 3. Inside molds 21 and 22, servo motor 29 is activated to drive rotary disk 28 to rotate, causing the centrifugal combined mold to rotate accordingly. The molten titanium alloy inside the cavities of molds 21 and 22 generates centrifugal force. During the casting process of the molten iron alloy, the centrifugal force generated by the mold rotation causes air bubbles in the molten liquid to be subjected to outward centrifugal force, making it easier for them to escape from the molten liquid and accumulate at the edge or top of the mold. This allows the molten liquid to fill the mold cavity more evenly and fully, while simultaneously venting the gas inside the mold. Float 12 slides downward under gravity and separates from the conical air inlet 5. The gas inside the mold enters the air guide pipe 4 through the exhaust groove 13 on the exhaust rod 11. The molten ferroalloy is discharged from the other end of the vent pipe 4. When the mold is filled with molten ferroalloy, the molten ferroalloy pushes the float 12 upward, causing its conical air inlet 5 to close, stopping the exhaust and preventing molten ferroalloy from entering the vent pipe 4. Then, the second electric telescopic valve 23 is closed, and the reduction motor 18 is started, causing the melting furnace 1 and the centrifugal combined mold to flip again, so that the melting furnace 1 is below the centrifugal combined mold. This allows the excess molten ferroalloy inside the feed pipe 3 to flow back into the melting furnace 1. Then, the first electric telescopic valve 15 is closed, allowing the molten ferroalloy to be stored inside the melting furnace 1 and kept warm to prevent the molten ferroalloy from remaining inside the feed pipe 3 and causing blockage. After the molten ferroalloy inside the centrifugal combined mold cools and forms a billet, the melting furnace 1 and the centrifugal combined mold are flipped so that the centrifugal combined mold is below the melting furnace 1. The first mold 21 and the second mold 22 are separated by the opening and closing assembly, and the ferroalloy billet inside is taken out. Then the first mold 21 and the second mold 22 are combined again for casting. Casting ferroalloy in the above manner is conducive to the venting of gas inside the mold, improving the quality of ferroalloy. Moreover, the melting furnace 1 is located above the centrifugal combined mold, and the material is poured from top to bottom, which can vent the raw material inside the melting furnace 1, which is conducive to the full utilization of the raw material for ferroalloy casting.

[0038] Although specific embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these specific embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An iron alloy casting device, characterized by: The utility model provides a molten furnace (1) with arc feeding port, centrifugal combined mould, support seat (2), rotating drive mechanism for driving molten furnace (1) and centrifugal combined mould to overturn, rotating drive mechanism is installed on support seat (2), molten furnace (1), centrifugal combined mould is installed in the inside of support seat (2), and molten furnace (1) is provided with exhaust pipe spare inside, and the end of molten furnace (1) close to centrifugal combined mould is communicated with the guide pipe (3) for discharging.

2. A ferrous alloy pouring apparatus as claimed in claim 1, wherein: The exhaust pipe spare includes a gas guide pipe (4) and a floating valve, the gas guide pipe (4) is located on the same axis as the guide pipe (3), and the two ends of the gas guide pipe (4) penetrate the inside of the molten furnace (1) and are sleeved in the inside of the guide pipe (3).

3. A ferrous alloy pouring apparatus as claimed in claim 2, wherein: The end of the gas guide pipe (4) close to the guide pipe (3) is a tapered air inlet (5) which is flush with the outlet of the guide pipe (3).

4. A ferrous alloy pouring apparatus as claimed in claim 3, wherein: The floating valve includes an exhaust rod (11) and a floating ball (12), the floating ball (12) is fixedly connected to one end of the exhaust rod (11), the floating ball (12) is a circular truncated cone shape matching the tapered air inlet (5), the exhaust rod (11) is slidably sleeved in the inside of the gas guide pipe (4), the surface of the exhaust rod (11) is provided with an exhaust groove (13), and the end of the exhaust rod (11) away from the floating ball (12) is provided with a limiting block (14).

5. The ferrous alloy pouring apparatus of claim 1, wherein: The guide pipe (3) is connected with the feed inlet of the centrifugal combined mould, and a first electric telescopic valve (15) is installed on the guide pipe (3), and the first electric telescopic valve (15) is provided with two matched valve plates (16) inside.

6. A ferrous alloy pouring apparatus as claimed in claim 5, wherein: The rotating drive mechanism includes a support frame (17) and a speed reducer motor (18), the support frame (17) is fixedly connected to the outside of the molten furnace (1), the centrifugal combined mould is installed in the inside of the support frame (17), there are two support seats (2) which are symmetrically arranged on the two sides of the support frame (17), the support frame (17) is fixedly connected with a rotating shaft on the two sides, the inside of the support seat (2) is provided with a bearing, the rotating shaft is sleeved in the inside of the bearing, the speed reducer motor (18) is fixedly connected to one side of the support seat (2), and the driving end of the speed reducer motor (18) is fixedly connected with one side of the rotating shaft.

7. A ferrous alloy pouring apparatus as claimed in claim 6, wherein: The centrifugal combined mould includes a first mould (21) and a second mould (22) matching the first mould (21), a second electric telescopic valve (23), an opening and closing assembly and a centrifugal assembly, and the ends of the first mould (21) and the second mould (22) close to the guide pipe (3) are respectively provided with semicircular feed tightening openings (26).

8. A ferrous alloy pouring apparatus as claimed in claim 7, wherein: The second electric telescopic valve (23) is divided into two parts, has two groups of electric actuating components, and is respectively installed on the feed inlets of the first mould (21) and the second mould (22).

9. The ferrous alloy pouring apparatus of claim 7, wherein: The centrifugal assembly includes a rotating disc (28) and a servo motor (29) driving the rotating disc (28) to rotate, the servo motor (29) is fixedly connected to the support frame (17), and the first mould (21) and the second mould (22) are slidably connected to the surface of the rotating disc (28) close to the molten furnace (1).

10. The ferrous alloy pouring apparatus of claim 7, wherein: The opening and closing assembly comprises a forward threaded rod (30), a reverse threaded rod (31), a double-shaft motor (32) and two guide blocks (33). The forward threaded rod (30) and the reverse threaded rod (31) are fixedly connected with two output shafts of the double-shaft motor (32) respectively. The two guide blocks (33) are threadedly matched with the forward threaded rod (30) and the reverse threaded rod (31) respectively. Two end driving grooves (34) are formed in the surface of the rotating disc (28) close to the centrifugal combined die. The two guide blocks (33) are slidingly connected in the two guide blocks (33) respectively, and the two guide blocks (33) are fixedly connected with the first die (21) and the second die (22) respectively.

Images