Titanium alloy melting and ingot casting processing equipment and method

Abstract

The application discloses a titanium alloy smelting ingot processing device and method, and belongs to the field of titanium alloy smelting ingot. The device comprises a crystallizer, the outer side of the crystallizer is provided with a cooling water jacket for cooling the crystallizer, the inside of the cooling water jacket is provided with two groups of partition plates arranged along the axial direction of the crystallizer, the two groups of partition plates sequentially divide the inside of the cooling water jacket from top to bottom into an upper cooling zone, a middle cooling zone and a lower cooling zone; an annular spray pipe is arranged in each cooling zone, the cooling liquid washes the inner wall of the cooling water jacket in a spraying mode, real-time drives away the vaporization bubbles, avoids the gas film heat insulation layer to reduce heat exchange; the inside of the annular spray pipe is divided into four cooling areas along the circumferential direction, the outer wall of the crystallizer is provided with corresponding heat flow sensors, the liquid supply amount is independently adjusted in the circumferential direction, the cooling liquid is distributed on demand, the dynamic self-adaptive balance of the circumferential temperature field of the crystallizer is realized, and the axial and circumferential quality consistency of the titanium alloy ingot is improved.

Description

Technical Field

[0001] This invention relates to the field of titanium alloy melting and casting technology, specifically to a titanium alloy melting and casting ingot processing equipment and method. Background Technology

[0002] Titanium and titanium alloys are increasingly widely used in aerospace, petrochemical, biomedical, and automotive industries due to their advantages such as corrosion resistance, high temperature resistance, and high specific strength. Vacuum consumable arc melting has become the mainstream method for the industrial production of titanium alloys due to its high technical maturity, high production efficiency, and ability to produce large-size ingots.

[0003] In the process of vacuum consumable arc melting and casting ingots, the cooling effect of the crystallizer directly determines the solidification structure and metallurgical quality of the ingot. Currently, the cooling method for crystallizers used in titanium alloy melting and casting ingots is mostly to introduce coolant from the bottom and discharge it from the top. During the upward flow of the coolant, it continuously exchanges heat with the outer wall of the crystallizer. The purpose is to remove the heat conducted from the crystallizer wall by the coolant, so that a suitable temperature gradient is formed on the inner wall of the crystallizer, thereby driving the molten titanium liquid to solidify layer by layer from the outside to the inside and from the bottom to the top, so as to form a dense ingot structure. For example, Chinese patent CN115948658A discloses a vacuum consumable arc melting and continuous casting equipment, in which a circulating cooling pipe water jacket is set on the crystallizer to introduce circulating cooling water to cool the molten liquid, so as to achieve the first cooling of the molten liquid.

[0004] However, the above cooling method still has the following drawbacks: First, because the coolant flows along a single path from bottom to top, its temperature continuously increases along the flow direction, resulting in uneven axial cooling distribution with high cooling intensity at the bottom and low cooling intensity at the top of the crystallizer; Second, this difference in axial cooling directly leads to uneven microstructure and properties of the ingot along the axial direction: due to excessive cooling at the bottom of the crystallizer, the solidification rate of the molten titanium liquid is too fast, which easily produces casting defects such as cold shuts; due to insufficient cooling at the top of the crystallizer, the residence time of the molten titanium liquid is long and the solidification rate is too low, which easily forms coarse grain structure, reducing the quality and yield of titanium alloy ingots. Summary of the Invention

[0005] The purpose of this invention is to provide a titanium alloy melting and casting ingot processing equipment and method to solve the problem in the prior art where the cooling capacity decreases from top to bottom due to the single path of the coolant flowing along the axial direction of the crystallizer, resulting in uneven axial structure and properties of the ingot.

[0006] The technical problem to be solved by the present invention can be achieved by the following technical solution: a titanium alloy melting and casting ingot processing equipment, including a crystallizer, a cooling water jacket for cooling the outside of the crystallizer, and two sets of partition plates arranged at intervals along the axial direction of the crystallizer inside the cooling water jacket, the two sets of partition plates dividing the cooling water jacket into an upper cooling zone, a middle cooling zone and a lower cooling zone from top to bottom. The cooling water jacket is provided with four replenishment pipes at equal intervals on its outer side for replenishing coolant. Each replenishment pipe has three filling pipes on its output side, and the output sides of the three filling pipes extend into the upper cooling zone, the middle cooling zone, and the lower cooling zone, respectively.

[0007] Preferably, the outer wall of the filling pipe is provided with a control valve to control the amount of coolant added.

[0008] Preferably, four drain manifolds for discharging the cooled liquid after heat exchange are equidistantly arranged on the outer side of the cooling water jacket. Each drain manifold has three drain pipes on its input side, and the input sides of the three drain pipes extend into the upper cooling zone, the middle cooling zone, and the lower cooling zone, respectively.

[0009] Preferably, a plurality of annular nozzles are vertically installed inside the cooling water jacket at equal intervals, and a plurality of nozzles are evenly distributed along the circumference on the output side of the annular nozzles, with the output side of the nozzles facing the inner wall of the cooling water jacket. The upper cooling zone, middle cooling zone and lower cooling zone are all equipped with liquid delivery components for delivering liquid to the annular nozzle; The cooling water jacket is also equipped with an exhaust assembly for discharging gases from the upper cooling zone, middle cooling zone, and lower cooling zone.

[0010] Preferably, the infusion assembly includes four through pipes, and the multiple annular nozzles located in the upper cooling zone, middle cooling zone and lower cooling zone are connected by four vertically arranged through pipes. The through pipes have a communication port on the side wall opposite to the annular nozzles for connecting the through pipes and the annular nozzles.

[0011] Preferably, the output side of the filling pipe located in the upper cooling zone, the middle cooling zone, and the lower cooling zone is connected to the input side of the through pipe located in the same cooling zone, for supplying coolant to each annular nozzle in the upper cooling zone, the middle cooling zone, and the lower cooling zone.

[0012] Preferably, the exhaust assembly includes four exhaust manifolds, which are equidistantly arranged on the outside of the cooling water jacket. Each exhaust manifold has three exhaust pipes on its input side, and the input sides of the three exhaust pipes extend to the top of the upper cooling zone, the middle cooling zone, and the lower cooling zone, respectively.

[0013] Preferably, four sets of baffles are equidistantly arranged on the inner wall of the annular nozzle, and the four sets of baffles divide the inner cavity of the annular nozzle into four mutually isolated cooling areas along the circumference, and the through pipe is located inside each cooling area; four heat flow sensors are equidistantly installed on the outer wall above the crystallizer.

[0014] Preferably, the heat flow sensor is positioned corresponding to the cooling area, and the heat flow sensor is electrically connected to an external control system; The four heat flux sensors respectively collect the heat flux density values ​​of the four circumferential regions on the upper outer wall of the crystallizer, and transmit the collected heat flux density values ​​to the external control system in real time in the form of electrical signals.

[0015] A method for processing titanium alloy smelting and casting ingots includes the following steps: P1: Coolant is independently supplied to the upper, middle and lower cooling zones of the cooling water jacket outside the crystallizer, and each cooling zone is independently supplied and drained to achieve axial zoned independent cooling of the crystallizer. P2: The coolant delivered to each cooling zone is distributed to each annular nozzle through the through pipe, and then sprayed onto the inner wall of the cooling water jacket by the nozzle, using the jet flow to drive away vaporized bubbles. P3 collects the heat flux density values ​​of the four circumferential regions of the crystallizer through four heat flux sensors and feeds them back to the external control system. The external control system independently adjusts the opening of the control valve on the filling pipe corresponding to each cooling area according to the heat flux density values ​​collected by each heat flux sensor, so as to realize independent control of the coolant supply to each circumferential region.

[0016] Compared with the prior art, the beneficial effects of this application are as follows: 1. The present invention divides the inner cavity of the cooling water jacket into an upper cooling zone, a middle cooling zone and a lower cooling zone distributed along the axial direction of the crystallizer by setting two sets of partition plates inside the cooling water jacket. Each cooling zone has an independent coolant supply and discharge passage, ensuring uniform axial cooling distribution of the crystallizer.

[0017] 2. The present invention provides annular nozzles in each cooling zone. The annular nozzles supply liquid through a through pipe. The coolant is delivered to the inner wall of the cooling water jacket by jetting. The scouring force of the jetting liquid flow drives away the vaporized bubbles generated during the cooling process in real time, thus avoiding the formation of an air film insulation layer on the inner wall of the cooling water jacket, which would lead to a reduction in local heat exchange.

[0018] 3. This invention divides the interior of the annular nozzle into four independent cooling areas circumferentially using a baffle plate. Each through-pipe independently supplies liquid to its corresponding cooling area, ensuring that each nozzle within a cooling area is supplied with liquid by its respective through-pipe. Simultaneously, four heat flux sensors corresponding to the locations of each cooling area are installed on the outer wall above the crystallizer, constructing a structure for circumferential zone detection and independent zone adjustment. This allows the liquid supply to each cooling area to be independently adjusted based on the heat flux density value of the corresponding circumferential region, i.e., the coolant supply is allocated as needed. This achieves dynamic adaptive and balanced adjustment of the circumferential temperature field of the crystallizer, effectively improving problems such as component segregation, grain size differences, and uneven microstructure in the ingot cross-section caused by eccentricity of the molten liquid droplet landing point, and improving the circumferential quality consistency of the titanium alloy ingot. Attached Figure Description

[0019] Figure 1 This is a schematic cross-sectional view of the overall structure in this invention. Figure 1 .

[0020] Figure 2 This is a schematic cross-sectional view of the overall structure in this invention. Figure 2 .

[0021] Figure 3 yes Figure 2 A magnified schematic diagram of the structure of region A in the middle.

[0022] Figure 4 This is a partial perspective view of the internal structure of the cooling water jacket in this invention.

[0023] Figure 5 yes Figure 4 Enlarged 3D view of the structure of region B in the middle.

[0024] Figure 6 This is a three-dimensional view of the internal structure of the cooling water jacket in this invention.

[0025] Figure 7 This is a perspective view of the overall structure of the present invention.

[0026] Figure 8 This is a flowchart of the titanium alloy melting and casting ingot processing method in this invention.

[0027] Explanation of reference numerals in the attached figures: 1. Crystallizer; 2. Sealing ring; 3. Cooling water jacket; 31. Divider plate; 32. Heat flow sensor; 4. Stirring coil; 51. Annular nozzle; 52. Baffle plate; 53. Nozzle; 54. Through pipe; 55. Connecting port; 61. Liquid replenishment pipe; 62. Liquid filling pipe; 63. Control valve; 64. Exhaust pipe; 65. Main exhaust pipe; 66. Drain pipe; 67. Main drain pipe. Detailed Implementation

[0028] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0029] Example 1 In the prior art, the cooling method of the crystallizer 1 used for melting and casting titanium alloy ingots is mostly to introduce coolant from the bottom and discharge it from the top. During the process of the coolant flowing from bottom to top, it continuously exchanges heat with the outer wall of the crystallizer 1. The temperature of the coolant gradually increases along the flow direction, which leads to a significant decrease in cooling capacity when it reaches the upper part of the crystallizer 1. This results in uneven axial cooling distribution with high cooling intensity at the bottom and low cooling intensity at the top of the crystallizer 1. This difference in axial cooling directly leads to uneven microstructure and properties of the ingot along the axial direction: First, due to excessive cooling in the lower part of the crystallizer 1, the solidification rate of the molten titanium liquid is too fast, which easily produces casting defects such as cold shuts and microcracks; Second, due to insufficient cooling in the upper part of the crystallizer 1, the residence time of the molten titanium liquid is too long and the solidification rate is too low, which easily forms a coarse grain structure. At the same time, due to the reduced temperature gradient and obstructed feeding channels, central shrinkage cavities and compositional segregation are easily produced, which seriously reduces the quality and yield of titanium alloy ingots.

[0030] like Figures 1 to 4 , Figure 7 In this embodiment, a titanium alloy melting and casting ingot processing equipment includes a crystallizer 1. A cooling water jacket 3 is provided on the outside of the crystallizer 1 to cool it. Two sets of partition plates 31 are arranged at intervals along the axial direction of the crystallizer 1 inside the cooling water jacket 3. The two sets of partition plates 31 divide the cooling water jacket 3 into an upper cooling zone, a middle cooling zone and a lower cooling zone from top to bottom, thereby forming a three-section cooling area that is independently distributed along the axial direction of the crystallizer 1.

[0031] Four replenishment pipes 61 are equidistantly arranged on the outer side of the cooling water jacket 3 to replenish coolant. Each replenishment pipe 61 has three filling pipes 62 on its output side. The output sides of the three filling pipes 62 extend to the upper cooling zone, the middle cooling zone and the lower cooling zone respectively. A control valve 63 is provided on the outer wall of the filling pipe 62 to control the amount of coolant added.

[0032] Four drain manifolds 67 are equidistantly arranged on the outer side of the cooling water jacket 3 to discharge the coolant after heat exchange. Each drain manifold 67 has three drain pipes 66 on its input side, and the input side of the three drain pipes 66 extends to the upper cooling zone, the middle cooling zone and the lower cooling zone respectively.

[0033] The working principle of the above-mentioned zoned cooling structure is as follows: external coolant is distributed to each filling pipe 62 through four replenishment pipes 61, and after being regulated by control valve 63, it is sent into the upper cooling zone, middle cooling zone and lower cooling zone respectively. After the coolant in each cooling zone exchanges heat with the corresponding section of the outer wall of the crystallizer 1, it is discharged from the main drain pipe 67 through the corresponding drain pipe 66 in each cooling zone. The supply and discharge of coolant in each cooling zone are independent of each other, ensuring that the axial cooling distribution of the crystallizer 1 is uniform.

[0034] It should be emphasized that the core improvement of this embodiment is that two sets of partition plates 31 are set in the cooling water jacket 3 to divide the inner cavity of the cooling water jacket 3 into an upper cooling zone, a middle cooling zone and a lower cooling zone distributed along the axial direction of the crystallizer 1. Each cooling zone has an independent coolant supply and discharge passage to ensure uniform axial cooling distribution of the crystallizer 1.

[0035] It should be noted that, such as Figure 4 , Figure 6 As shown, the partition plate 31 is an annular plate structure, which is sealed and fixed to the inner circumferential wall of the cooling water jacket 3.

[0036] like Figure 4 As shown, in this embodiment, the cooling water jacket 3 has an annular structure; a stirring coil 4 for stirring the molten liquid is provided between the cooling water jacket 3 and the crystallizer 1; this is prior art and will not be described in detail here; and the gap between the upper and lower ends of the cooling water jacket 3 and the crystallizer 1 is sealed by a sealing ring 2.

[0037] Example 2 It is understandable that in the partitioned cooling structure of Embodiment 1, each cooling zone is cooled by directly introducing coolant into the internal cavity of the cooling water jacket 3. After entering each cooling zone, the coolant fills the entire area in a diffuse manner and flows slowly from top to bottom or from bottom to top along the outer wall of the crystallizer 1. However, this diffused cooling method has the following technical problems in practical applications: due to the low flow rate of the coolant, the vaporized bubbles generated after the coolant is heated are difficult to be carried away by the flowing coolant in time. The bubbles rise under the action of buoyancy and gradually gather, and are very easy to adhere to the inner wall of the cooling water jacket 3. A layer of gas film heat insulation layer is formed between the inner wall of the cooling water jacket 3 and the coolant. The thermal conductivity of this gas film is much lower than that of the coolant, which hinders the transfer of heat from the outer wall of the crystallizer 1 to the coolant, reduces the heat exchange efficiency in this area, and causes uneven temperature distribution on the outer wall of the crystallizer 1.

[0038] like Figures 1 to 6 To solve the above problems, several annular nozzles 51 are vertically installed inside the cooling water jacket 3 at equal intervals. Several nozzles 53 are evenly distributed along the circumference on the output side of the annular nozzles 51, and the output side of the nozzles 53 is set towards the inner wall of the cooling water jacket 3. Liquid delivery components for delivering liquid to the annular nozzle 51 are provided in the upper cooling zone, middle cooling zone and lower cooling zone; The cooling water jacket 3 is also equipped with an exhaust assembly for discharging gases from the upper cooling zone, middle cooling zone and lower cooling zone.

[0039] The infusion assembly includes four through pipes 54. Multiple annular nozzles 51 located in the upper cooling zone, middle cooling zone, and lower cooling zone are connected by four vertically arranged through pipes 54. The side walls of the through pipes 54 opposite to the annular nozzles 51 are provided with communication ports 55 for connecting the through pipes 54 and the annular nozzles 51. That is, each through pipe 54 passes through the wall of each annular nozzle 51 along the axial direction and communicates with the internal chamber of the annular nozzle 51 through the communication ports 55 opened on the side walls of the through pipes 54.

[0040] The output side of the filling pipe 62 located in the upper cooling zone, middle cooling zone and lower cooling zone is connected to the input side of the through pipe 54 located in the same cooling zone, and is used to supply coolant to each annular nozzle 51 in the cooling zone.

[0041] The inlet wall of the drain pipe 66 is in contact with the top wall of the partition plate 31, meaning that the drain outlet is the lowest liquid level point in the cooling zone.

[0042] The exhaust assembly includes four exhaust manifolds 65. Four more exhaust manifolds 65 are equidistantly arranged on the outer side of the cooling water jacket 3. Each exhaust manifold 65 has three exhaust pipes 64 on its input side. The input side of the three exhaust pipes 64 extends to the top of the upper cooling zone, the middle cooling zone, and the lower cooling zone, respectively. That is, after the coolant absorbs heat and vaporizes, the steam bubbles generated and the air dissolved in the coolant are heated and released, and then discharged through the exhaust pipes 64 and collected in the exhaust manifolds 65 to be drawn out.

[0043] Working principle: Coolant is supplied to the through pipe 54 in each cooling zone through the external liquid supply system. The coolant is then distributed through the through pipe 54 to multiple annular nozzles 51 distributed vertically in the same cooling zone through the connecting ports 55. The coolant in each annular nozzle 51 is sprayed out from multiple nozzles 53 arranged in a circumferential direction to form a jet flow that impacts the inner wall of the cooling water jacket 3.

[0044] It should be emphasized that the core improvement of this embodiment is that an annular nozzle 51 is set in each cooling zone. The annular nozzle 51 supplies liquid through the through pipe 54. The coolant is delivered to the inner wall of the cooling water jacket 3 in a spray manner. The scouring force of the sprayed liquid flow is used to drive away the vaporized bubbles generated during the cooling process in real time, so as to avoid the bubbles in the diffused cooling method from adhering to the inner wall of the cooling water jacket 3 to form an air film insulation layer, which would lead to a reduction in local heat exchange.

[0045] It should be noted that a sedimentation gap is reserved at the inlet of the drain pipe 66 so that waste liquid in the cooling zone can be collected and discharged into the drain pipe 66.

[0046] Example 3 It is understandable that in Examples 1 and 2, during the actual titanium alloy smelting and casting process, the molten titanium liquid in the crystallizer 1 does not always drip from a constant position. Due to the combined influence of various factors such as the rotation of the consumable electrode, arc blow, molten pool surface fluctuation, and uneven erosion at the electrode tip, the landing point of the molten titanium liquid dripping into the crystallizer 1 will be eccentrically offset within the cross-section of the crystallizer 1. When the landing point of the molten droplet deviates from the central axis of the crystallizer 1, the inner wall area of ​​the crystallizer 1 corresponding to the landing point will bear a much higher heat load density than other areas, and the wall temperature of the crystallizer 1 in this area will rise significantly, while the wall temperature of the crystallizer 1 on the opposite side of the landing point will be relatively low. In this situation, if the same flow rate of coolant is still supplied to all areas around the crystallizer 1 using the uniform spray cooling method, a contradictory situation will occur where the cooling capacity of areas with high heat load is relatively insufficient and the cooling capacity of areas with low heat load is excessive. This will result in a severe uneven temperature field around the outer wall of the crystallizer 1, which in turn will cause problems such as compositional segregation, grain size differences and uneven microstructure in the cross-section of the ingot.

[0047] like Figure 5 To solve the above problems, four sets of baffles 52 are provided at equal intervals on the inner wall of the annular nozzle 51. The four sets of baffles 52 divide the inner cavity of the annular nozzle 51 into four mutually isolated cooling areas at equal intervals along the circumference, and the through pipe 54 is located inside each cooling area.

[0048] Four heat flow sensors 32 are equidistantly installed on the outer wall above the crystallizer 1. The heat flow sensors 32 correspond to the positions of the cooling areas and are electrically connected to the external control system. The external control system independently adjusts the opening of the control valve 63 on the filling pipe 62 corresponding to each cooling area according to the heat flow density value fed back by each heat flow sensor 32, so as to realize independent control of the coolant supply to each circumferential area.

[0049] Four heat flux sensors 32 respectively collect the heat flux density values ​​P of the four circumferential regions on the upper outer wall of the crystallizer 1, and transmit the collected heat flux density values ​​P to the external control system in real time in the form of electrical signals; the external control system includes a processor, a parameter acquisition module and a valve control terminal. It should be noted that the outer circumference of the crystallizer 1 without the stirring coil 4 is divided into four circumferential regions at equal intervals. The parameter acquisition module is used to receive the heat flux density value P fed back by four heat flux sensors 32. The processor stores the heat flux density reference range [S_min, S_max]. The parameter acquisition module compares each P value with the heat flux density reference range [S_min, S_max] stored in the processor: When all four P values ​​are greater than S_max, a "full-area over-high signal" is generated and sent to the valve control terminal. After receiving the signal, the valve control terminal sends a synchronous increase opening command to the four control valves 63. After receiving the command, the control valves 63 increase their valve core opening degree, so that the flow rate of coolant flowing into the through pipe 54 through the filling pipe 62, and then through the through pipe 54 through the connecting port 55 to each annular nozzle 51 and sprayed onto the inner wall of the cooling water jacket 3 from the nozzle 53 increases synchronously. When all four P values ​​are less than S_min, a "full-area low signal" is generated and sent to the valve control terminal. After receiving the signal, the valve control terminal sends a synchronous reduction command to the four control valves 63. After receiving the command, the control valves 63 reduce the opening degree of their valve cores, so that the flow rate of coolant flowing into the through pipe 54 through the filling pipe 62, and then through the through pipe 54 to each annular nozzle 51 through the connecting port 55 and sprayed onto the inner wall of the cooling water jacket 3 from the nozzle 53 is reduced synchronously. When all four P values ​​are between S_min and S_max, no signal is generated, and each control valve 63 maintains its current opening. When some of the four P values ​​are greater than S_max, some are less than S_min, or some are between S_min and S_max, a "local adjustment signal" is generated and sent to the valve control terminal. After receiving the signal, the valve control terminal independently executes the control valve 63 corresponding to each P value: increasing the opening degree when P > S_max, decreasing the opening degree when P < S_min, and maintaining the current opening degree when S_min ≤ P ≤ S_max. Among them, the control valve 63 that increases the opening degree increases the valve core opening degree, and the control valve 63 that decreases the opening degree decreases the valve core opening degree, thereby increasing or decreasing the flow rate of coolant sprayed from the nozzle 53 to the inner wall of the cooling water jacket 3 through the through pipe 54 and the annular nozzle 51 within the corresponding cooling area.

[0050] It should be emphasized that the core improvement of this embodiment lies in the following: inside the annular nozzle 51, four independent cooling areas are divided circumferentially by a baffle plate 52, and each through pipe 54 independently supplies liquid to the corresponding cooling area, so that the nozzle 53 in each cooling area is supplied with liquid by the corresponding through pipe 54 alone; at the same time, four heat flow sensors 32 corresponding to the positions of each cooling area are set on the outer wall above the crystallizer 1, constructing a structure for circumferential zone detection and independent zone adjustment, so that the liquid supply of each cooling area can be independently adjusted according to the heat flow density value of the corresponding circumferential region, that is, the coolant supply is allocated on demand, realizing dynamic adaptive balance adjustment of the circumferential temperature field of the crystallizer 1, effectively improving the problems of ingot cross-sectional composition segregation, grain size difference and microstructure inhomogeneity caused by the eccentricity of the molten liquid droplet point, and improving the circumferential quality consistency of titanium alloy ingots.

[0051] It should be noted that each set of baffles 52 extends radially along the annular nozzle 51, and its two ends are fixedly connected to the inner wall of the annular nozzle 51, dividing the annular inner cavity of the annular nozzle 51 into four independent arc-shaped chambers. Each arc-shaped chamber is a cooling area, and the nozzles 53 in each cooling area are supplied with liquid only by the through pipe 54 located in the cooling area.

[0052] It should be noted that the four heat flow sensors 32 are evenly distributed around the crystallizer 1, and the circumferential position of each heat flow sensor 32 is consistent with the circumferential position of the corresponding cooling area.

[0053] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed application.

Claims

1. A titanium alloy melting and casting ingot processing equipment, characterized in that, Includes a crystallizer (1), and a cooling water jacket (3) is provided on the outside of the crystallizer (1) for cooling it. The cooling water jacket (3) is provided with two sets of partition plates (31) arranged at intervals along the axial direction of the crystallizer (1). The two sets of partition plates (31) divide the cooling water jacket (3) into an upper cooling zone, a middle cooling zone and a lower cooling zone from top to bottom. The cooling water jacket (3) is provided with four replenishment pipes (61) at equal intervals on its outer side for replenishing coolant. Each replenishment pipe (61) has three filling pipes (62) on its output side. The output sides of the three filling pipes (62) extend to the upper cooling zone, the middle cooling zone and the lower cooling zone respectively.

2. The titanium alloy smelting and casting ingot processing equipment as described in claim 1, characterized in that, The outer wall of the filling pipe (62) is provided with a control valve (63) to control the amount of coolant filling.

3. The titanium alloy smelting and casting ingot processing equipment as described in claim 1, characterized in that, The cooling water jacket (3) is also provided with four drain manifolds (67) at equal intervals on the outside for discharging the coolant after heat exchange. Each drain manifold (67) has three drain pipes (66) on its input side, and the input sides of the three drain pipes (66) extend to the upper cooling zone, the middle cooling zone and the lower cooling zone respectively.

4. The titanium alloy smelting and casting ingot processing equipment as described in claim 2, characterized in that, The cooling water jacket (3) is vertically installed with several equidistant annular nozzles (51). The output side of the annular nozzles (51) is evenly distributed with several nozzles (53) along the circumference. The output side of the nozzles (53) is set towards the inner wall of the cooling water jacket (3). The upper cooling zone, middle cooling zone and lower cooling zone are all equipped with liquid delivery components for delivering liquid to the annular nozzle (51); The cooling water jacket (3) is also provided with an exhaust assembly for discharging gas from the upper cooling zone, the middle cooling zone and the lower cooling zone.

5. The titanium alloy smelting and casting ingot processing equipment as described in claim 3, characterized in that, The infusion assembly includes four through tubes (54). The multiple annular nozzles (51) located in the upper cooling zone, middle cooling zone and lower cooling zone are connected by four vertically arranged through tubes (54). The through tubes (54) and the annular nozzles (51) have a communication port (55) on their side walls opposite to the through tubes (54) for connecting the through tubes (54) and the annular nozzles (51).

6. The titanium alloy smelting and casting ingot processing equipment as described in claim 5, characterized in that, The output side of the filling pipe (62) located in the upper cooling zone, the middle cooling zone and the lower cooling zone is connected to the input side of the through pipe (54) located in the same cooling zone, and is used to supply coolant to each annular nozzle (51) in the upper cooling zone, the middle cooling zone and the lower cooling zone.

7. The titanium alloy smelting and casting ingot processing equipment as described in claim 3, characterized in that, The exhaust assembly includes four exhaust manifolds (65), which are equidistantly arranged on the outside of the cooling water jacket (3). Each exhaust manifold (65) has three exhaust pipes (64) on its input side, and the input sides of the three exhaust pipes (64) extend to the top of the upper cooling zone, the middle cooling zone and the lower cooling zone, respectively.

8. The titanium alloy smelting and casting ingot processing equipment as described in claim 4, characterized in that, The inner wall of the annular nozzle (51) is provided with four sets of baffles (52) at equal intervals. The four sets of baffles (52) divide the inner cavity of the annular nozzle (51) into four mutually isolated cooling areas at equal intervals along the circumference, and the through pipe (54) is located inside each cooling area; four heat flow sensors (32) are installed at equal intervals on the outer wall above the crystallizer (1).

9. The titanium alloy smelting and casting ingot processing equipment as described in claim 8, characterized in that, The heat flow sensor (32) is located corresponding to the cooling area, and the heat flow sensor (32) is electrically connected to the external control system; Among them, the four heat flow sensors (32) respectively collect the heat flow density values ​​of the four circumferential regions of the upper outer wall of the crystallizer (1), and transmit the collected heat flow density values ​​to the external control system in real time in the form of electrical signals.

10. A method for processing titanium alloy smelting and casting ingots, characterized in that, The titanium alloy smelting and casting ingot processing equipment as described in any one of claims 1-9 includes the following steps: P1: Coolant is independently supplied to the upper cooling zone, middle cooling zone and lower cooling zone of the cooling water jacket (3) outside the crystallizer (1), and liquid is independently supplied and drained to each cooling zone to achieve axial partitioned independent cooling of the crystallizer (1). P2: The coolant sent into each cooling zone is diverted to each annular nozzle (51) through the through pipe (54), and then sprayed onto the inner wall of the cooling water jacket (3) by the nozzle (53) to drive away the vaporized bubbles by the sprayed liquid flow. P3: The heat flux density values ​​of the four circumferential regions of the crystallizer (1) are collected by four heat flux sensors (32) and fed back to the external control system. The external control system independently adjusts the opening degree of the control valve (63) on the filling pipe (62) corresponding to each cooling area according to the heat flux density values ​​collected by each heat flux sensor (32), so as to realize independent control of the coolant supply in each circumferential region.

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