Centrifugal tray for vacuum suspension smelting furnace and centrifugal tray assembly

Abstract

The utility model relates to the technical field of metal vacuum casting devices, in particular to a centrifugal tray for a vacuum suspension smelting furnace and a centrifugal tray assembly. The centrifugal tray for the vacuum suspension smelting furnace comprises a tray body, the tray body is a circular plate, a plurality of T-shaped grooves are formed in the upper surface of the tray body, a limiting clamping groove is formed in the center of the upper surface of the tray body, and the limiting clamping groove is used for being in circumferential limiting fit with the bottom of a casting mold center pouring pipe. The T-shaped grooves are formed in the upper surface of the tray body and serve as clamping (pressing) bolt fastening fulcrums of a casting mold, a bolt head can be clamped, the bolt head does not rotate under stress, installation is convenient and fast, the fastening angle is flexible, and stability and reliability are achieved. And the limiting clamping groove is formed in the center of the upper surface of the tray body, so that during centrifugal pouring, a casting mold center pouring pipe can be directly positioned in the center of the tray body and synchronously rotates along with the tray body, and it is guaranteed that a mold is stably poured under the static state or the centrifugal process.

Description

Technical Field

[0001] This utility model relates to the technical field of metal vacuum melting and casting devices, specifically to a centrifugal tray and centrifugal tray assembly for a vacuum suspension melting furnace. Background Technology

[0002] A vacuum levitation melting furnace, also known as a vacuum induction levitation solidification furnace, is a device that integrates vacuum melting and casting functions. This equipment melts alloys in a vacuum environment and pours the molten metal into a mold (forming mold) to achieve a vacuum casting process. Depending on the casting process requirements, the vacuum levitation melting furnace can perform static casting or centrifugal rotation dynamic casting. The molds are assembled and placed on a centrifugal tray plane and fixed using clamps (pressors) to ensure stable casting under static or centrifugal conditions.

[0003] The balance and stability of the centrifugal casting tray are crucial for the efficiency of mold closing and successful casting in vacuum casting. Currently available centrifugal casting trays are typically made of steel, constructed from welded stainless steel components, and may consist of single or double layers of circular steel plates with supporting ribs. The top steel plate has round or slotted holes as anchor points for the mold clamping bolts. This design is primarily suitable for static casting; however, for centrifugal casting, additional machining and installation of fixing devices on the centrifugal casting tray are required.

[0004] Currently, the fastening supports of existing centrifuge trays are round or strip-shaped holes in the steel plate, which cannot properly engage the bolt heads. During tightening, the bolts rotate, resulting in incomplete tightening. Furthermore, the fixed and singular position of the fastening support cannot meet the multi-directional changes required for fastening under complex casting conditions, leading to low reliability. Therefore, existing centrifuge trays still need improvement. Utility Model Content

[0005] In view of this, the present invention provides a centrifugal tray for a vacuum levitation melting furnace, which can at least solve the problem that the existing centrifugal trays for vacuum levitation melting furnaces cannot meet the multi-directional change requirements for fastening under complex casting molds.

[0006] The first aspect of this utility model provides a centrifugal tray for a vacuum suspension melting furnace, including a tray body, the tray body being a circular plate, the upper surface of the tray body being provided with a plurality of T-slots, the T-slots being used to cooperate with T-bolts to fix the casting mold, and a limiting groove being provided at the center of the upper surface of the tray body, the limiting groove being used to cooperate with the bottom circumferential limiting of the casting mold center pouring pipe.

[0007] In some embodiments, the plurality of T-slots include a plurality of first T-slots evenly distributed circumferentially along the pallet body, each first T-slot extending radially along the pallet body.

[0008] In some embodiments, the plurality of T-slots further include an annular second T-slot concentric with the tray body, and the first T-slot and the second T-slot are interconnected.

[0009] In some embodiments, a relief groove is provided at the inner end of each first T-slot along the radial direction of the pallet body, and the outer end of each first T-slot extends to the circumferential end face of the pallet body.

[0010] In some embodiments, the limiting slot is a notched circular groove with a depth of 8-12mm.

[0011] In some embodiments, the centrifugal tray for a vacuum levitation melting furnace further includes a filler block that mates with a notched circular groove to fill the notched circular groove.

[0012] In some embodiments, the first T-slot is provided with eight.

[0013] In some embodiments, the tray body is further provided with an assembly positioning component that cooperates with the centrifuge.

[0014] The second aspect of this utility model provides a centrifugal tray assembly for a vacuum levitation melting furnace, including the centrifugal tray provided in the first aspect, and further including a lateral clamp. The lateral clamp includes a thrust member and a first limiting member. The thrust member is provided with a stop surface for cooperating with a casting mold and has a bolt hole extending vertically. The first limiting member includes a first T-bolt and a first locking nut. The first T-bolt mates with a first T-slot and / or a second T-slot and passes through the bolt hole. The first locking nut is threadedly engaged with the first T-bolt.

[0015] In some embodiments, the centrifugal tray assembly for a vacuum levitation melting furnace further includes a pressure fixture, which includes a lower pressure plate and a second limiting member. The lower pressure plate has a lower pressure surface for engaging with a mold, and a bolt hole extending vertically through the lower pressure plate. The second limiting member includes a second T-bolt and a second locking nut. The second T-bolt engages with a first T-slot and / or a second T-slot and passes through the bolt hole. The second locking nut is threaded into the second T-bolt and is positioned above the lower pressure plate.

[0016] The beneficial effects of this utility model are as follows: Firstly, by providing several T-slots on the upper surface of the tray body as fastening points for the mold's clamping (pressing) bolts, the bolt heads can be clamped, preventing them from rotating under force. This makes installation convenient and quick, and the tightening angle is flexible, stable, and reliable. Furthermore, the numerous fastening points on the tray body significantly improve mold closing efficiency, reducing the original mold closing time by approximately 1 / 4. This facilitates mold fixing, thereby improving the efficiency, operational flexibility, and adaptability of vacuum casting mold closing. Additionally, by providing a limiting groove at the center of the upper surface of the tray body for circumferentially limiting the bottom of the central pouring pipe of the mold, the central pouring pipe can be directly positioned on the center of the tray body during centrifugal pouring, and rotates synchronously with it, ensuring stable pouring of the mold under static or centrifugal processes.

[0017] The second aspect of this application, through the setting of lateral clamps, can radially and centrifugally tighten the mold, ensuring that the central pouring pipe of the mold cannot move in the horizontal direction. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the structure of the tray body of a centrifugal tray for a vacuum levitation melting furnace provided in one embodiment of the present invention;

[0020] Figure 2 for Figure 1 Sectional view of plane AA;

[0021] Figure 3 This is a cross-sectional view of the centrifugal tray assembly for a vacuum levitation melting furnace provided in one embodiment of the present invention, showing its usage status.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Tray body; 11. First T-slot; 12. Second T-slot; 13. Relief groove; 14. Limiting slot; 15. Assembly positioning component; 2. Casting mold center pouring pipe; 3. Casting mold; 4. Lower pressure plate; 5. Second limiting component; 6. Thrust component; 7. First limiting component. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be further described in detail below with reference to specific examples and accompanying drawings.

[0025] It should be noted that all uses of "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.

[0026] The first aspect of this utility model provides a centrifugal tray for a vacuum levitation melting furnace, including a tray body 1. When melting and pouring the mold 3 in the vacuum levitation melting furnace, the tray body 1 serves as a support platform for the mold 3. It has the characteristics of self-balance, durability and resistance to deformation, and can efficiently, quickly and reliably fix the mold 3. It can better meet the needs of fixing the mold 3 when casting products are static or centrifugally poured in the vacuum levitation melting furnace.

[0027] like Figure 1 and Figure 2 As shown, the tray body 1 is circular in shape, and its upper surface has several T-slots. These T-slots are used to engage with T-bolts to fix the mold 3. These T-slots serve as fastening points for the clamping (pressing) bolts of the mold 3, effectively clamping the bolt heads and preventing them from rotating under force. This makes installation convenient, quick, flexible, stable, and reliable. Furthermore, the numerous fastening points on the tray body 1 significantly improve the mold-closing efficiency of the mold 3, reducing the original mold-closing time by approximately 1 / 4. This facilitates the fixing of the mold 3, thereby improving the efficiency, operational flexibility, and adaptability of vacuum casting. A limiting groove 14 is located at the center of the upper surface of the tray body 1. This limiting groove 14 is designed to engage with the bottom circumferentially of the central pouring pipe 2 of the mold. During centrifugal pouring, the central pouring pipe 2 can be directly positioned at the center of the tray body 1 and rotated synchronously, ensuring stable pouring of the mold under static or centrifugal processes.

[0028] The centrifuge trays in the existing technology are prone to deformation during the heating and cooling process, requiring the welding of support ribs and making full processing impossible. Centrifuge trays made in this way are prone to being unbalanced, requiring balance tests for correction, making operation inconvenient and inefficient.

[0029] In comparison, the pallet body 1 of this application is integrally cast, and the T-slots and limiting slots 14 are not cast on the casting blank (they are machined). All surfaces have machining allowances, and the final product is machined. Under the premise of ensuring casting quality, the pallet body 1 is easier to achieve all-directional mass balance. When centrifugal casting only requires low to medium speed (50-300 rpm), dynamic and static balance tests are not required, and it can be used directly.

[0030] In some embodiments, such as Figure 1As shown, the plurality of T-slots include multiple first T-slots 11 evenly distributed along the circumference of the pallet body 1, each first T-slot 11 extending along the radial direction of the pallet body 1. Figure 1 As shown, the first T-slot 11 has 8 slots, which can accommodate the fastening of the mold 3 with different radial sizes.

[0031] In some embodiments, the plurality of T-slots further include an annular second T-slot 12 concentric with the tray body 1, wherein the first T-slot 11 and the second T-slot 12 are interconnected. Figure 1 As shown, there is one first T-slot 11, or multiple concentric ones can be set. The arrangement of the second T-slot 2 in a ring direction ensures that there are fastening support points on the pallet body 1 in all 360 degrees, which can meet the requirements of different heights and irregular shapes of the casting mold 3 for the angle of the clamp (press).

[0032] In some embodiments, along the radial direction of the pallet body 1, each first T-slot 11 has an inner end provided with a relief groove 13, and the outer end of each first T-slot 11 extends to the circumferential end face of the pallet body 1 to facilitate the entry of the T-slot cutter. Specifically, the first T-slots 11 and the second T-slots 12 on the pallet body 1 are fully machined. When machining the T-slots, the eight radial first T-slots 11 are machined first, and then the second T-slots 12 are machined circumferentially to facilitate the entry and exit of the T-slot cutter. Before machining the first T-slots 11, a relief groove 13 is machined on the radial inner side so that the T-slot cutter can smoothly exit after completing the milling of the T-slot, avoiding interference between the T-slot cutter and the workpiece, and improving machining efficiency and safety. The machining method of the first T-slots 11 and the second T-slots 12 is as follows: first, a flat-bottomed milling cutter is used to mill the narrow opening width of the top surface to the bottom of the T-slot, and then a T-slot cutter is used to mill the inner wide opening width.

[0033] In some embodiments, the limiting groove 14 is a notched circular groove with a depth of 8-12 mm. For example... Figure 3 The central casting pipe 2 is placed at the center of the tray body 1. The lower part of the central casting pipe 2 has a boss that can be inserted into the notched circular groove, so that the central casting pipe 2 can be synchronized with the tray body 1. If the depth of the notched circular groove is too shallow, its fixing effect on the central casting pipe 2 is not significant; if the depth is too large, it will lead to assembly difficulties. In particular, the curvature of the corner of the notched circular groove in this application is minimized to ensure that the boss at the bottom of the central casting pipe 2 and the notched circular groove are firmly pressed together in the circumferential direction. In other embodiments, the limiting groove 14 can also be set to other shapes, which only need to be symmetrical about the center of the tray and not circular.

[0034] In some embodiments, the centrifugal tray for the vacuum suspension melting furnace also includes a filler block (not shown in the figure) that cooperates with the notched circular groove to fill the notched circular groove. During static casting, if the notched circular groove does not need to drive the center of the casting pipe 2 of the mold 3 to rotate, a stainless steel filler block of the same shape and thickness as the notched circular groove can be used to fill it, avoiding the instability of the mold 3 caused by the notched circular groove not being filled, thereby improving the quality of the casting.

[0035] In some embodiments, the first T-slot 11 has eight sections to position the mold 3 in multiple orientations. The tray body 1 is also provided with an assembly positioning element 15 that mates with the centrifuge, specifically, as shown in... Figure 2 As shown, the center of the tray body 1 is provided with a central hole that connects to the output end of the centrifuge, and the bottom plate edge of the tray body 1 is provided with a slider that slides with the centrifuge body, so that the tray body 1 can rotate smoothly under the drive of the centrifuge.

[0036] The second aspect of this utility model provides a centrifugal tray assembly for a vacuum levitation melting furnace, including the centrifugal tray mentioned in the first aspect, and further including a lateral clamp. The lateral clamp includes a thrust member 6 and a first limiting member 7. The thrust member 6 is provided with a stop surface for cooperating with the mold 3, and is provided with bolt holes that penetrate in the vertical direction. Figure 3 As shown, the stop surface faces the radially inward side of the tray body 1. The first limiting member 7 includes a first T-bolt and a first locking nut. The first T-bolt mates with a first T-slot 11 and / or a second T-slot 12 and passes through a bolt hole. The first locking nut is threadedly engaged with the first T-bolt to restrict the movement of the thrust member 6 after its position is determined. Figure 3 As shown, multiple molds 3 are evenly distributed around the central gating pipe 2 (for centrifugal casting, they need to be evenly distributed around the circumference). By setting lateral clamps, this application can radially and centripetally tighten the molds 3, ensuring that the central gating pipe 2 cannot move in the horizontal direction.

[0037] In some embodiments, the centrifugal tray assembly for the vacuum levitation melting furnace further includes a press, such as Figure 3 As shown, the pressure fixture includes a lower pressure plate 4 and a second limiting member 5. The lower pressure plate 4 has a lower pressure surface for engaging with the mold 3, and a bolt hole extending vertically through the lower pressure plate 4. The second limiting member 5 includes a second T-bolt and a second locking nut. The second T-bolt engages with the first T-slot 11 and / or the second T-slot 12 and passes through the bolt hole. The second locking nut is threaded into the second T-bolt and is positioned above the lower pressure plate 4. The lower pressure plate 4 of this application can be fixed to the first T-slot 11 or the second T-slot 12 by the second limiting member 5, ensuring the stability of the mold 3 during centrifugal casting and overcoming buoyancy forces on the mold 3 during alloy molten metal injection.

[0038] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A centrifugal tray for a vacuum suspension melting furnace, characterized in that, include: The pallet body (1) is a circular plate. The upper surface of the pallet body (1) is provided with several T-shaped grooves. The T-shaped grooves are used to cooperate with T-bolts to fix the mold (3). A limiting groove (14) is provided at the center of the upper surface of the pallet body (1). The limiting groove (14) is used to cooperate with the bottom circumferential limiting of the casting center pouring pipe (2).

2. The centrifugal tray for a vacuum levitation melting furnace according to claim 1, characterized in that, The plurality of T-slots include a plurality of first T-slots (11) evenly distributed along the circumference of the pallet body (1), each first T-slot extending along the radial direction of the pallet body (1).

3. The centrifugal tray for a vacuum levitation melting furnace according to claim 2, characterized in that, The plurality of T-slots also include an annular second T-slot (12) concentric with the tray body (1), and the first T-slot (11) and the second T-slot (12) are interconnected.

4. The centrifugal tray for a vacuum levitation melting furnace according to claim 2, characterized in that, Along the radial direction of the pallet body (1), each first T-slot (11) has an inner end provided with a knife relief groove (13), and the outer end of each first T-slot (11) extends to the circumferential end face of the pallet body (1).

5. The centrifugal tray for a vacuum levitation melting furnace according to claim 1, characterized in that, The limiting slot (14) is a notched circular groove with a depth of 8-12mm.

6. The centrifugal tray for a vacuum levitation melting furnace according to claim 5, characterized in that, It also includes a filler block that mates with the notched circular groove to fill the notched circular groove.

7. The centrifugal tray for a vacuum levitation melting furnace according to claim 2, characterized in that, The first T-slot (11) has 8 slots.

8. The centrifugal tray for a vacuum levitation melting furnace according to claim 1, characterized in that, The tray body (1) is also provided with an assembly positioning component (15) that cooperates with the centrifuge.

9. A centrifugal tray assembly for a vacuum levitation melting furnace, characterized in that, include: Centrifuge tray as described in any one of claims 1-7; as well as The lateral clamp includes a thrust member (6) and a first limiting member (7). The thrust member (6) is provided with a stop surface for cooperating with the mold (3) and a bolt hole that runs through the vertical direction. The first limiting member (7) includes a first T-bolt and a first locking nut. The first T-bolt cooperates with the first T-slot (11) and / or the second T-slot (12) and passes through the bolt hole. The first locking nut is threadedly engaged with the first T-bolt.

10. The centrifugal tray assembly for a vacuum levitation melting furnace according to claim 9, characterized in that, It also includes a pressure tool, which includes a lower pressure plate (4) and a second limiting member (5). The lower pressure plate (4) has a lower pressure surface for cooperating with the mold (3) and a bolt hole that runs through it in the vertical direction. The second limiting member (5) includes a second T-bolt and a second locking nut. The second T-bolt cooperates with the first T-slot (11) and / or the second T-slot (12) and passes through the bolt hole. The second locking nut is threadedly engaged with the second T-bolt and is located above the lower pressure plate (4).

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