A device and process for multi-layer casting of high-temperature alloy master alloy

Abstract

The present invention discloses a device and process for multi-layer casting of high-temperature alloy master alloy, the device is composed of a plurality of tooling frames, each of which is provided with a matching position; each of the tooling frames includes a support assembly, a diverter plate and an overflow assembly; the support assembly includes a support plate, a fixed hanging plate and a tooling frame; wherein the support plate is arranged at the bottom of the tooling frame, a fixed hanging plate is arranged on the upper part of the tooling frame, and the tooling frame is also provided with a matching position for matching with other tooling frames; the diverter plate is arranged above the fixed hanging plate; the overflow assembly includes a pipe mold longitudinally arranged between the fixed hanging plate and the support plate. The process includes the installation of the tooling frame and the casting of the high-temperature alloy master alloy; the present invention not only greatly improves the single loading amount, but also improves the yield rate by adopting a multi-layer casting device and process for casting the high-temperature alloy master alloy.

Description

Technical Field

[0001] The invention belongs to the field of alloy casting, and in particular relates to a device and a process for multi-layer casting of high-temperature alloy master alloy. Background Art

[0002] Casting high-temperature alloy master alloy is a high-temperature alloy material used to directly prepare parts by casting process. Casting high-temperature alloy master alloy is generally smelted by vacuum induction furnace or other refining furnace, poured into master alloy rod, and then its surface is cleaned, polished, marked, packed, and cast into parts.

[0003] The casting high-temperature alloy is smelted in a vacuum induction furnace, and the process is: batching → charging → vacuuming (<10Pa) → power melting → purifying (temperature 1600℃) → refining → alloying → pouring.

[0004] At present, there are two forms of casting high-temperature alloy master alloys: the first is to assemble the tube mold into a tooling frame, put the tooling frames together, and pour them one by one (such as Figure 1 As shown in the upper layer); this type of pouring will be limited by the size of the pouring tray. When pouring a small diameter pipe mold, the pouring volume is limited at one time, which limits the loading volume of one furnace, thus affecting the production capacity of the vacuum induction furnace. At the same time, the small loading volume is not good for the life of the furnace lining. In addition, the tooling bracket currently used, together with the upper and lower parts, is restricted by the bracket columns when the pipe mold is poured due to high temperature expansion; the expansion and elongation of the pipe mold is easy to top the diverter plate, causing steel leakage accidents; the pipe mold is very severely bent, and the consumption of the pipe mold increases. In response to the problem of thermal expansion during pipe mold pouring, the patent with application number 201620984968.7 proposes a high-temperature alloy casting device, which uses a high-temperature alloy spring under the pipe mold, but the high-temperature alloy spring is expensive; during the pouring process and the baking of the tooling assembly, the temperature is high (baking temperature is 500℃, and the ambient temperature during pouring is about 600℃), the spring is easy to temper and fail, and the number of uses is low.

[0005] The second is single casting: the tube molds are placed on the floor in a circle or rectangle, the bottom plate is placed on the casting tray, the tray rotates or moves radially, and the tube molds are cast one by one. This single casting process moves the next tube mold after each casting, and the movement is frequent. At present, this process is used for tube molds with a diameter of ≥80mm. It is difficult to center the steel flow when casting small diameter tube molds, and the casting time is long. When changing the tube mold for casting, the molten steel is easy to splash, causing alloy loss.

[0006] At present, the casting of high-temperature alloy master alloy is performed by smelting and pouring a casting tool frame assembled with a diverter plate, a tube mold, an insulation cap, and a frame. This tool frame has the following problems:

[0007] Only single-layer pouring is possible; when pouring master alloy rods with smaller diameters, each master alloy is light in weight and the pouring volume is small, which limits the loading volume and production capacity of the vacuum induction furnace.

[0008] Since the pouring process cannot be measured, the pouring volume of each tooling assembly fluctuates greatly, affecting the quality stability of the master alloy and reducing the molten steel yield.

[0009] Since the tooling assembly frame limits the expansion and contraction of the tube mold up and down, the tube mold expands due to heat during pouring, which can easily cause the tube mold to bend, reducing the life of the tube mold; the expansion of the tube mold often breaks the diverter plate, causing steel leakage accidents. Summary of the invention

[0010] In view of the above problems, the present invention proposes a device for multi-layer casting of high-temperature alloy master alloy, the device is composed of a plurality of tooling frames, each of which is provided with a matching position; each of the tooling frames includes a support component, a diverter plate and an overflow component;

[0011] The support assembly includes a support plate, a fixed hanging plate and a tooling frame; wherein the support plate is arranged at the bottom of the tooling frame, a fixed hanging plate is arranged at the upper part of the tooling frame, and the tooling frame is also provided with a matching positioning device that matches with other tooling frames;

[0012] The diverter plate is arranged above the fixed hanging plate; the diverter plate comprises an upper diverter plate, a middle diverter plate and a bottom diverter plate; wherein a protrusion is arranged on one side of the middle diverter plate and the bottom diverter plate;

[0013] The overflow assembly includes an overflow hole, an overflow pipe and a pipe mold; the overflow pipe is arranged side by side with the outermost pipe mold and communicates with the overflow hole opened inside the diverter plate; the pipe mold is longitudinally arranged between the fixed hanging plate and the support plate.

[0014] Furthermore, the fixed hanging plate is installed on the upper end of the pipe mold, and a plurality of fixing holes are evenly distributed on the fixed hanging plate;

[0015] The support plate is installed at the lower end of the pipe mold, and a plurality of positioning holes are evenly distributed on the support plate, and the fixing holes correspond to the positioning holes one by one;

[0016] The tooling frame is composed of a fixedly connected horizontal beam and a vertical beam, and each of the tooling frames is matched and fixed in the longitudinal direction.

[0017] Furthermore, a splash dam is provided inside the upper diverter plate, the splash dam is arranged on one side inside the upper diverter plate, and an overflow hole is provided on the opposite side of the splash dam;

[0018] The overflow hole on the middle-layer flow distribution plate is perpendicular to the overflow hole on the upper-layer flow distribution plate and is connected via an overflow pipe;

[0019] A liquid level observation hole is provided above the protruding portion of the bottom diverter plate, and a liquid level height mark is arranged inside the liquid level observation hole.

[0020] Furthermore, each of the diverter plates includes a bottom plate and baffles around the bottom plate, and the bottom plate is evenly distributed with flow steel holes, and the flow steel holes are connected by "V"-shaped grooves.

[0021] Furthermore, an iron ring is installed at the upper end of the pipe mold and is suspended on a fixed hanging plate above the pipe mold through the iron ring. A plug is installed at the lower end of the pipe mold, one end of the plug is inserted into the lower opening of the pipe mold, and the other end of the plug is inserted into the positioning hole.

[0022] Furthermore, the overflow hole maintains a preset height with the bottom plate of the diverter plate.

[0023] Furthermore, the pipe mold is positioned by a tooling and arranged and combined between the fixed hanging plate and the supporting plate.

[0024] Furthermore, the plug and the lower opening of the tube mold can move relative to each other during pouring.

[0025] The present invention also proposes a multi-layer casting process for high-temperature alloy master alloy, which comprises the following steps:

[0026] During pouring, the molten steel is poured into each tube mold on the upper layer through the upper layer diverter plate;

[0027] After the upper layer distribution plate reaches a preset height, the molten steel flows into the middle layer distribution plate through the overflow pipe to cast the next set of tooling assembly frames;

[0028] The next layer of tooling assembly is poured in sequence until the bottom layer of tooling assembly is poured.

[0029] Furthermore, during the pouring process, the progress of the pouring is observed through the liquid level observation hole, and when the pouring process reaches a preset liquid level height mark, the pouring is stopped.

[0030] Furthermore, the process also includes assembly of the device, arranging and combining a plurality of pipe molds through tooling positioning, installing an insulating riser at the upper end of the pipe mold, fixing the diverter plate, and combining the upper and lower tooling frames through a tooling frame through coordination and positioning to form a complete casting device.

[0031] Furthermore, the process also includes placing the assembled device on a turntable of a pouring chamber of a vacuum induction furnace, connecting an upper diverter plate to a splash-proof saddle, and rotating a bottom plate of the pouring chamber to start pouring.

[0032] Beneficial effects of the present invention:

[0033] The present invention adopts a multi-layer casting high-temperature alloy master alloy device and process, which not only greatly increases the single loading amount, but also improves the yield rate;

[0034] The invention solves the problem of tube mold expansion during the pouring process by using a welded iron ring at the upper end of the tube mold and arranging a plug at the lower end.

[0035] By setting a splash-proof dam inside the upper diverter plate, the splash of molten steel is prevented and the molten steel is restricted from spreading too quickly to reduce the splash of molten steel; and the overflow hole of the upper diverter plate is kept at a certain height with the bottom plate of the diverter plate, which reduces the shrinkage of the master alloy rod, increases the accuracy of the batching, and improves the yield rate of molten steel;

[0036] By providing a liquid level observation hole and a liquid level height mark on the bottom diverter plate, it is convenient to observe the liquid level of the molten steel during pouring, so as to timely grasp the pouring progress and end the pouring in time.

[0037] Other features and advantages of the present invention will be described in the following description, and partly become obvious from the description, or be understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 The overall structural schematic diagram of the pouring device according to the embodiment of the present invention is shown;

[0040] Figure 2 A schematic diagram of the structure of the upper diverter plate according to an embodiment of the present invention is shown;

[0041] Figure 3 It shows a schematic diagram of the upper tooling assembly structure of the pouring device according to an embodiment of the present invention;

[0042] Figure 4 A schematic diagram of the structure of a liquid level observation hole in an embodiment of the present invention is shown;

[0043] Figure 5 A schematic structural diagram of a support assembly of a pouring device according to an embodiment of the present invention is shown.

[0044] In the figure: 1. overflow pipe; 2. middle-layer diverter plate; 3. liquid level observation hole; 4. bottom-layer diverter plate; 5. upper-layer diverter plate; 6. pipe mold; 7. overflow hole; 8. splash-proof dam; 9. liquid level mark; 10. iron ring; 11. plug; 12. tooling frame; 13. fixed hanging plate; 14. support plate; 15. positioning hole; 16. fixing hole; 17. flow steel hole; 18. protrusion. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0046] In order to solve the problems existing in the prior art, the present invention proposes a multi-layer casting device and process, which adopts multi-layer casting. The upper and lower diverter plates are self-overflowing to keep the height of the excess steel in the upper diverter plate 5 constant; the pipe mold 6 is hung on a fixed hanging plate 13, and the pipe mold 6 and the plug 11 can be freely retracted and retracted, thereby solving the problem of the pipe mold 6 bending and damaging the diverter plate due to the expansion of the pipe mold 6.

[0047] A device for multi-layer casting of high-temperature alloy master alloy, the device consists of a plurality of tooling frames, each of which is provided with a matching positioner; each tooling frame includes a support assembly, a diverter plate and an overflow assembly; the support assembly includes a support plate 14, a fixed hanger plate 13 and a tooling frame 12; wherein the support plate 14 is arranged at the bottom of the tooling frame 12, the fixed hanger plate 13 is arranged on the upper part of the tooling frame 12, and the tooling frame 12 is also provided with a matching positioner that cooperates with the remaining tooling frames 12; the diverter plate is arranged above the fixed hanger plate 13; the overflow assembly includes a pipe mold 6 longitudinally arranged between the fixed hanger plate 13 and the support plate 14.

[0048] For example, the bottom and top of the tooling frame 12 are matched and positioned by male and female matching, the two sides of the bottom opposite the crossbeam channel steel are inverted, the top protrusion is welded with square steel, the square steel is inserted into the channel steel groove, and the upper and lower fittings are used for positioning. Each tooling frame includes a support component, a diverter plate and an overflow component.

[0049] Reference Figure 1, a three-layer tooling frame is selected as an example to illustrate the device for pouring and casting high-temperature alloy master alloy. The device is divided into three layers from top to bottom through the diverter plate and the support assembly. The diverter plate includes an upper diverter plate 5, a middle diverter plate 2, and a bottom diverter plate 4; the diverter plate can be circular or rectangular, and can be set according to the fixing method and shape of the tooling frame 12. In this embodiment, a rectangular diverter plate is preferably used, and a protrusion 18 is set outward on one side of the middle diverter plate 2 and the bottom diverter plate 4 to facilitate the placement of the diverter plate and the setting of the liquid level observation hole 3. The diverter plate is made of high alumina refractory material, and includes a bottom plate and an outer baffle. According to the arrangement of the tube mold 6, flow steel holes 17 are distributed on the bottom plate, and the flow steel holes 17 are connected by "V"-shaped grooves. The groove depth is 20mm, the taper is 6°, and the bottom width is 12mm (the flow steel holes 17 are basically the same in size); the "V"-shaped groove cooperates with the flow steel holes 17 to restrain the scattered flow of molten steel, effectively reducing the risk of scalding the tube mold 6, and at the same time improving the surface quality of the alloy rod.

[0050] Reference Figure 2 The upper diverter plate 5 is provided with a splash dam 8, which is arranged on one side of the inner part of the upper diverter plate 5 to prevent the splash of molten steel. At the same time, it can restrict the diffusion rate of molten steel when pouring, quickly form a molten pool to reduce the splash of molten steel. Overflow holes 7 are opened on different sides of the splash dam 8. Figure 3 , the overflow hole 7 maintains a certain height with the bottom plate of the diverter plate, and according to the characteristics of the master alloy, it meets the requirements of alloy rod shrinkage compensation and reasonable overfilling, preferably 20-25mm. When the molten steel begins to overflow, the molten steel in the upper diverter plate 5 maintains a certain height, and the molten steel continuously compensates the master alloy rod in the tube mold 6, reducing the shrinkage holes of the master alloy rod, and the height of the overflow hole 7 is constant, so that the overfilling amount in the upper diverter plate 5 is constant, thereby increasing the accuracy of the batching and improving the yield of molten steel. The overflow hole 7 is set on the upper diverter plate 5 and the middle diverter plate 2, and the bottom diverter plate 4 is not provided with an overflow hole 7, but a liquid level observation hole 3 is set instead, and the tube mold 6 of the bottom layer is poured through the steel flow hole 17 in the diverter plate.

[0051] Reference Figure 4 The liquid level observation hole 3 is opened on the protrusion 18 on one side of the bottom diverter plate 4. A liquid level height mark 9 is set in the liquid level observation hole 3. The liquid level height mark 9 can be set with several different gradients according to actual operation requirements to observe the pouring process. When pouring in the vacuum pouring chamber, the liquid level of the molten steel is observed through the liquid level observation hole 3. When the first liquid level height mark is reached, the pouring is stopped.

[0052] Reference Figure 1 and Figure 5The support assembly includes a fixed hanger plate 13 installed on the upper end of the pipe mold 6, a support plate 14 on the lower end of the pipe mold 6, and a peripheral tooling frame 12. The fixed hanger plate 13 is provided with a plurality of fixing holes 16 for fixing the upper end of the pipe mold 6 on the fixed hanger plate 13. Positioning holes 15 of the pipe mold 6 are evenly distributed above the support plate 14. The fixing holes 16 on the fixed hanger plate 13 correspond to the positioning holes 15 on the support plate 14 one by one. The tooling frame 12 is composed of brackets arranged horizontally and vertically, and is used to fix the longitudinal installation of multiple tooling frames. The upper fixed hanger plate 13 is installed at the bottom of the upper diverter plate 5. The upper fixed hanger plate 13 is evenly provided with fixing holes 16, wherein the fixing holes 16 provide a fixing position for the upper pipe mold 6; the support plate 14 is arranged above the middle diverter plate 2, and the middle and upper fixed hangers 13 are also arranged, located at the bottom of the middle diverter plate 2, and also have fixing holes 16 corresponding to the fixing holes 16 of the upper layer. A support plate 14 is also provided above the bottom flow distribution plate 4, and a bottom fixed hanging plate 13 is also provided below. The flow distribution plate and the support plate 14 are connected via an overflow assembly.

[0053] The overflow assembly includes an overflow hole 7, an overflow pipe 1 and a pipe mold 6. In this example, the overflow pipe 1 is a thermal insulation ceramic tube. The overflow pipe 1 is arranged on the outside of the pipe mold 6 and communicates with the overflow hole 7 opened inside the diverter plate, and passes through the support plate 14 to the next diverter plate. The pipe mold 6 is positioned by tooling, arranged and combined between the fixed hanging plate 13 and the support plate 14. The upper end (riser end) of the pipe mold 6 is welded with an iron ring 10. The specification of the iron ring 10 can be 10mm high and 6mm thick. It is used to hang the pipe mold 6. The pipe mold 6 is connected to the upper fixed hanging plate 13 through the iron ring 10, but is not limited to this connection method; a plug 11 is installed at the lower end of the pipe mold 6. One end of the plug 11 is inserted into the lower end of the pipe mold 6, and the other end is inserted into the lower positioning hole 15. Since the plug 11 and the pipe mold 6 can move relative to each other, the problem of expansion of the pipe mold 6 during the pouring process is solved.

[0054] A multi-layer casting process for high-temperature alloy master alloy, the process comprising the following steps:

[0055] The vacuum induction furnace is used to smelt the high-temperature alloy. After smelting, the molten steel is poured into a tube mold 6 made of seamless steel pipe. After smelting, the temperature of the molten steel is about 1600°C. It is crystallized and solidified into a master alloy rod in the tube mold 6. The master alloy rod must not have secondary holes >3-5mm, the curvature is ≯3mm / m, and the surface must be smooth.

[0056] Arrange and combine multiple pipe molds 6 through tooling positioning, install a heat-insulating riser on the upper end of the pipe mold 6, fix the diverter plate, and complete a set of independent tooling frames; then combine multiple layers of independent tooling frames through matching positioning to form a complete casting device;

[0057] Place the pouring device on the turntable of the pouring chamber of the vacuum induction furnace, connect the upper diverter plate 5 with the splash saddle, and pour each upright combination in turn by rotating or moving the pouring chamber chassis;

[0058] During pouring, the upper diverter plate 5 first diverts the molten steel into each pipe mold 6 of the tooling assembly. After the molten steel reaches a preset height (20-25mm) in the upper diverter plate 5, it flows to the next diverter plate through the overflow pipe 1 to pour the next set of tooling assemblies. The same process is used to pour the next tooling assembly; until it flows to the bottom diverter plate 4; the pouring progress is observed through the liquid level observation hole 3, and when the preset liquid level height is reached, the pouring is stopped.

[0059] The above-mentioned pouring device and pouring process are used to pour the Co-Cr-Mo master alloy. The product specification of the Co-Cr-Mo master alloy is Φ35×470mm. 8 sets of tooling frames are used, 4 sets on the upper and 4 sets on the lower. Each set of the upper tooling frame has 35 tube molds 6, and each set of the lower tooling frame has 36, for a total of 284. The pouring temperature is controlled at 1614°C, the loading amount is 1360Kg, and the final qualified product is 1081Kg, with a yield rate of 79.5%.

[0060] Under the same conditions, only 4 sets of tooling frames can be cast using the traditional single-layer process and equipment. The product specification of the cast Co-Cr-Mo master alloy is Φ35×470mm, using 4 sets of tooling frames, single-layer combination, loading volume 700Kg, qualified products 545Kg, and the yield rate is 77.8%.

[0061] It can be seen from the above data that by using the device and process proposed in the present invention for casting, the loading amount and qualified finished products are nearly doubled, the yield rate is increased by 1.7%, and the casting efficiency is greatly improved, with high operability and practicality.

[0062] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for multi-layer casting of high-temperature alloy master alloy, characterized in that: The device is composed of a plurality of tooling frames, each of which is provided with a matching positioner; each of the tooling frames includes a support assembly, a diverter plate and an overflow assembly; The support assembly comprises a support plate (14), a fixed hanging plate (13) and a tooling frame (12); wherein the support plate (14) is arranged at the bottom of the tooling frame (12), the fixed hanging plate (13) is arranged at the top of the tooling frame (12), and the tooling frame (12) is also provided with a matching positioning device for matching with other tooling frames (12); The diverter plate is arranged above the fixed hanging plate (13); the diverter plate comprises an upper diverter plate (5), a middle diverter plate (2) and a bottom diverter plate (4); wherein a protrusion (18) is arranged on one side of the middle diverter plate (2) and the bottom diverter plate (4); The overflow assembly comprises an overflow hole (7), an overflow pipe (1) and a pipe mold (6); the overflow pipe (1) is arranged side by side with the outermost pipe mold (6) and communicates with the overflow hole (7) provided inside the diverter plate; the pipe mold (6) is longitudinally arranged between the fixed hanging plate (13) and the support plate (14); The fixed hanger plate (13) is installed at the upper end of the pipe mold (6), and a plurality of fixing holes (16) are evenly distributed on the fixed hanger plate (13); the support plate (14) is installed at the lower end of the pipe mold (6), and a plurality of positioning holes (15) are evenly distributed on the support plate (14), and the fixing holes (16) correspond to the positioning holes (15) one by one; the tooling frame (12) is composed of a fixedly connected horizontal beam and a vertical beam, and each of the tooling frames (12) is matched and fixed in the longitudinal direction; a splash dam (8) is provided inside the upper diverter plate (5), and the splash dam (8) is arranged on one side inside the upper diverter plate (5), and an overflow hole (7) is provided on the opposite side of the splash dam (8); the overflow hole (7) is provided on the middle diverter plate (2) and is connected to the upper diverter plate (5). The overflow hole (7) formed on the diverter plate (5) is vertical and connected via the overflow pipe (1); a liquid level observation hole (3) is formed above the protruding portion (18) of the bottom diverter plate (4), and a liquid level mark (9) is arranged inside the liquid level observation hole (3); each diverter plate comprises a bottom plate and baffles around the bottom plate, and flow steel holes (17) are evenly distributed on the bottom plate, and the flow steel holes (17) are connected via "V"-shaped grooves; an iron ring (10) is installed at the upper end of the pipe mold (6), and the pipe mold (6) is suspended on the fixed hanging plate (13) via the iron ring (10); a plug (11) is installed at the lower end of the pipe mold (6), and one end of the plug (11) is inserted into the lower end of the pipe mold (6), and the other end of the plug (11) is inserted into the positioning hole (15).

2. The device for multi-layer casting of high temperature alloy master alloy according to claim 1, characterized in that: The overflow hole (7) maintains a preset height with the bottom plate of the diverter plate.

3. The device for multi-layer casting of high temperature alloy master alloy according to claim 1, characterized in that: The pipe mold (6) is positioned by a tooling and arranged and assembled between the fixed hanging plate (13) and the supporting plate (14).

4. The device for multi-layer casting of high temperature alloy master alloy according to claim 1, characterized in that: The plug (11) and the lower opening of the tube mold (6) are capable of relative movement during pouring.

5. A process for multi-layer casting of high temperature alloy master alloy, characterized in that: The process is implemented by the device according to claim 1, and the process comprises the following steps: The molten steel is poured into each tube mold (6) of the upper layer through the upper layer diverter plate (5); After the molten steel reaches a preset height at the upper diverter plate (5), it flows through the overflow pipe (1) to the middle diverter plate (2) to cast the next set of tooling frames; The next layer of tooling assembly is poured in sequence until the bottom layer of tooling assembly is poured.

6. The process for multi-layer casting of high temperature alloy master alloy according to claim 5, characterized in that: During the pouring process, the progress of the pouring is observed through the liquid level observation hole (3), and when the pouring process reaches a preset liquid level height mark (9), the pouring is stopped.

7. The process for multi-layer casting of high temperature alloy master alloy according to claim 5, characterized in that: The process also includes assembling the device, arranging and combining a plurality of pipe molds (6) by means of tooling positioning, installing a heat-insulating riser at the upper end of the pipe mold (6), fixing a diverter plate, and combining the upper and lower tooling frames by means of a tooling frame (12) through coordination and positioning to form a complete casting device.

8. The process for multi-layer casting of high temperature alloy master alloy according to claim 5, characterized in that: The process also includes placing the assembled device on a turntable of a vacuum induction furnace casting chamber, connecting the upper diverter plate (5) to the splash saddle, and rotating the casting chamber bottom plate to start casting.

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