Titanium alloy casting pouring system and manufacturing method thereof

Abstract

The invention relates to the technical field of investment casting, in particular to a titanium alloy casting pouring system and a manufacturing method thereof.The pouring system comprises a main pouring gate, an upper annular pouring gate and a lower annular pouring gate; a plurality of transverse pouring gates are annularly and uniformly distributed on the inner circumferential surface of the lower annular pouring gate; the lower end of the main pouring gate is connected with the converging part of the plurality of transverse pouring gates, and the upper end of the main pouring gate extends upwards from the central part of the upper annular pouring gate; a plurality of first vertical pouring gates are arranged between the upper annular pouring gate and the lower annular pouring gate; a transverse short pouring gate is correspondingly arranged right above each transverse pouring gate, the outer side end of each transverse short pouring gate is adhered to the inner circumferential surface of the corresponding transverse short pouring gate, and the inner side end of each transverse short pouring gate faces the circle center of the upper annular pouring gate; a second vertical pouring gate is arranged between the lower surface of the inner side end of each transverse short pouring gate and the corresponding transverse pouring gate; in the circumferential direction, the first vertical pouring gates and the second vertical pouring gates are arranged in a staggered manner; and a plurality of casting wax molds are respectively adhered to the first vertical pouring gate and the second vertical pouring gate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of investment casting, in particular to a titanium alloy casting pouring system and a manufacturing method thereof. BACKGROUND

[0002] In the investment casting of titanium alloy, the cross gate used for combining small casting wax patterns is usually a simple flat disc, and the wax patterns can only be combined on a plane, and about 30-40 pieces of casting wax patterns can be combined by one cross gate. Most of the titanium ingots used for pouring are wasted in the cross gate, and the material loss rate is as high as 80%, which increases the burden of raw material use. Therefore, a reasonable pouring system is needed to bond the casting wax patterns. In the prior art, a large-size thin-wall aluminum / magnesium alloy cylinder casting anti-deformation pouring system is disclosed in the patent with the publication number CN220049946U, which is composed of a straight gate, a cross gate, a side gate and a connected riser.

[0003] However, the pouring system in the above CN220049946U is not suitable for bonding multiple casting wax patterns at the same time, and cannot improve the space utilization rate when the casting wax patterns are combined.

[0004] Therefore, it is necessary to design a good pouring system to improve the space utilization rate when the casting wax patterns are combined. SUMMARY

[0005] The main purpose of the present application is to provide a titanium alloy casting pouring system and a manufacturing method thereof, which aims to solve the above technical problems.

[0006] To achieve the above purpose, on the one hand, the present application provides a titanium alloy casting pouring system, which comprises a main gate, an upper annular gate and a lower annular gate, the upper annular gate is arranged vertically above the lower annular gate; a plurality of cross gates are uniformly distributed on the inner circumferential surface of the lower annular gate; and the inner side ends of the plurality of cross gates converge at the center position of the lower annular gate; the main gate is vertically arranged, and the lower end of the main gate is connected with the convergence part of the plurality of cross gates, and the upper end of the main gate extends upward from the center part of the upper annular gate; a plurality of first vertical gates are arranged between the upper annular gate and the lower annular gate; a horizontal short gate is arranged corresponding to each cross gate vertically above, and the outer side end of the horizontal short gate is bonded on the inner circumferential surface of the upper annular gate, and the inner side end faces the center of the upper annular gate; a second vertical gate is arranged between the lower surface of the inner side end of each horizontal short gate and the corresponding cross gate; the first vertical gate and the second vertical gate are arranged alternately in the circumferential direction; and a plurality of casting wax patterns are bonded on the first vertical gate and the second vertical gate respectively.

[0007] Preferably, the inner diameter of the upper annular gate is φD, and the length of the horizontal short gate is L, which satisfies:

[0008] Preferably, the number of the horizontal sprues is six, and the number of the first vertical sprues is six.

[0009] Preferably, the horizontal sprue comprises a linear part and an arc part; one end of the arc part is connected with the inner circumferential surface of the lower annular sprue, and the other end is connected with the linear part.

[0010] Preferably, two supporting blocks are arranged on the outer circumferential surface of the lower annular sprue.

[0011] Preferably, the sizes of the upper annular sprue and the lower annular sprue are as follows:

[0012] Preferably, a plurality of reinforcing columns are arranged between the wax mold of the casting and the first vertical sprue and the second vertical sprue, respectively.

[0013] In another aspect, the application further provides a manufacturing method of the pouring system, comprising the following steps:

[0014] S1, preparing an upper sprue plate: the upper sprue plate comprises an upper annular sprue and a plurality of horizontal short sprues uniformly distributed on the inner circumferential surface of the upper annular sprue, and the upper sprue plate is prepared by integral pressing;

[0015] S2, preparing a lower sprue plate: the lower sprue plate comprises a lower annular sprue and a plurality of horizontal sprues uniformly distributed on the inner circumferential surface of the lower annular sprue, and the lower sprue plate is prepared by integral pressing;

[0016] S3, respectively preparing a first vertical sprue, a second vertical sprue and a main sprue;

[0017] S4, assembling: vertically bonding the main sprue at the converging position of the plurality of horizontal sprues; bonding the lower sprue plate and the upper sprue plate by using the first vertical sprue and the second vertical sprue; and bonding the wax mold of the casting on the first vertical sprue and the second vertical sprue.

[0018] Preferably, in the step S2, when the lower sprue plate is prepared, two supporting blocks are integrally pressed on the outer circumferential surface of the lower annular sprue.

[0019] Preferably, in the step S4, the bonding positions must be smooth and smoothly transitioned, and cracks, sharp corners and local pits are not allowed.

[0020] Due to the adoption of the above technical solutions, the application has the following advantages:

[0021] (1) The titanium alloy casting pouring system provided by the application, in which a plurality of vertically arranged second sprue forms an inner cage structure, and a plurality of vertically arranged first sprue forms an outer cage structure, so that the entire titanium alloy casting pouring system is a double-layered birdcage structure, which can bond more casting wax molds. The first sprue and the second sprue are arranged in a staggered manner in the circumferential direction, so as to avoid interference between the casting wax molds on the first sprue and the second sprue.

[0022] (2) The pouring system with the staggered double-layered birdcage structure provided by the application fully guarantees the space utilization rate when the casting wax molds are combined, and the number of combined ordinary sprue discs is at least doubled. Meanwhile, the pouring system has a simple structure and a relatively regular shape, the cylindrical structure can guarantee the filling flow of the metal liquid, the three-dimensional design does not bring about significantly greater filling pressure, the utilization rate of raw materials is significantly improved, the production efficiency is greatly improved, and the pouring system is suitable for large-batch delivery and one-time pouring forming.

[0023] (3) In the manufacturing method provided by the application, the upper sprue disc and the lower sprue disc are both prepared by integral pressing, which is beneficial to improving the preparation efficiency of the pouring system. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in the drawings without any creative effort.

[0025] Figure 1 The pouring system structure schematic diagram when no casting wax mold is bonded;

[0026] Figure 2 The pouring system structure schematic diagram after the casting wax mold is bonded.

[0027] The drawing number explanation: 1, upper annular sprue; 2, lower annular sprue; 2a, support block; 3, cross sprue; 3a, straight line part; 3b, arc part; 4, main sprue; 5, transverse short sprue; 6, first vertical sprue; 7, second vertical sprue; 8, casting wax mold; 9, reinforcing column; 100, upper sprue disc; 200, lower sprue disc. DETAILED DESCRIPTION

[0028] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort fall within the protection scope of the present application.

[0029] It should be noted that all the direction indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the direction indications also change accordingly.

[0030] In addition, the descriptions involving "first", "second" and the like in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but must be based on the fact that a person of ordinary skill in the art can realize it, and when the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0031] In addition, in order to facilitate the description, it is agreed that the "inner side end" is the end radially inward, and the "outer side end" is the end radially outward.

[0032] In combination with Figure 1 and Figure 2 As shown in FIG. 1, in one aspect, the present embodiment provides a titanium alloy casting pouring system, which comprises a main runner 4, an upper annular runner 1 and a lower annular runner 2, the upper annular runner 1 is arranged in the upper of the lower annular runner 2; a plurality of cross runners 3 are annularly and uniformly distributed on the inner circumferential surface of the lower annular runner 2; the inner side ends of the plurality of cross runners 3 converge at the center position of the lower annular runner 2; the main runner 4 is vertically arranged, the lower end of the main runner 4 is connected with the converging part of the plurality of cross runners 3, and the upper end of the main runner 4 extends upward from the center part of the upper annular runner 1; a plurality of first vertical runners 6 are arranged between the upper annular runner 1 and the lower annular runner 2; a cross short runner 5 is correspondingly arranged above each cross runner 3, and the outer side end of the cross short runner 5 is bonded on the inner circumferential surface of the upper annular runner 1, and the inner side end faces the center of the upper annular runner 1; a second vertical runner 7 is arranged between the lower surface of the inner side end of each cross short runner 5 and the corresponding cross runner 3; in the circumferential direction, the first vertical runner 6 and the second vertical runner 7 are arranged alternately; a plurality of casting wax molds 8 are respectively bonded on the first vertical runner 6 and the second vertical runner 7.

[0033] Combination Figure 1 As shown, the inner diameter of the upper annular runner 1 is φD, and the length of the transverse short runner 5 is L, satisfying:

[0034] A plurality of vertically arranged second vertical runners 7 form an inner layer cage structure, and a plurality of vertically arranged first vertical runners 6 form an outer layer cage structure, so that the entire pouring system is a double-layered birdcage structure, which can bond more casting wax patterns. The first vertical runner 6 and the second vertical runner 7 are arranged in a staggered manner in the circumferential direction, so as to avoid interference between the casting wax patterns 8 on the first vertical runner 6 and the second vertical runner 7.

[0035] In the embodiment, the number of the transverse runners 3 is six, and the number of the first vertical runners 6 is six.

[0036] Combination Figure 1 As shown, the transverse runner 3 includes a linear portion 3a and an arc-shaped portion 3b; one end of the arc-shaped portion 3b is connected with the inner circumferential surface of the lower annular runner 2, and the other end is connected with the linear portion 3a, specifically, the arc-shaped portion 3b is tangent to the lower annular runner 2. During pouring, the titanium alloy liquid is injected from the main runner 4 and enters the lower annular runner 2 under the shunt effect of the transverse runner 3. In order to avoid the impact of the titanium alloy liquid on the lower annular runner 2, the arc-shaped portion 3b is arranged on the transverse runner 3, so that the titanium alloy liquid can enter the lower annular runner 2 from the tangent direction along the arc-shaped portion 3b, thereby avoiding the impact. Figure 1 The arrow A indicates the direction of entering the lower annular runner 2 from the tangent direction, thereby avoiding the impact.

[0037] Combination Figure 1 As shown, two support blocks 2a are arranged on the outer circumferential surface of the lower annular runner 2. When the pouring system after bonding the casting wax pattern 8 needs to be flattened, the support blocks 2a play a supporting role to avoid damaging the mold shell made of the casting wax pattern 8 during pouring.

[0038] In the embodiment, the size of the upper annular runner 1 and the lower annular runner 2 is:

[0039] Combination Figure 2 As shown, a plurality of reinforcing columns 9 are arranged between the casting wax pattern 8 and the first vertical runner 6 and the second vertical runner 7, respectively, to prevent the casting wax pattern 8 from falling off the first vertical runner 6 and the second vertical runner 7, and to improve the filling capacity of the casting during pouring.

[0040] On the other hand, the embodiment also provides a manufacturing method of the pouring system, comprising the following steps:

[0041] S1, preparing an upper runner plate 100: the upper runner plate 100 comprises an upper annular runner 1 and a plurality of transverse short runners 5 evenly distributed on the inner circumferential surface of the upper annular runner 1, and the upper runner plate 100 is prepared by integral pressing;

[0042] S2, preparing a lower runner plate 200: the lower runner plate 200 comprises a lower annular runner 2 and a plurality of transverse runners 3 evenly distributed on the inner circumferential surface of the lower annular runner 2, and the lower runner plate 200 is prepared by integral pressing;

[0043] S3, respectively preparing a first vertical runner 6, a second vertical runner 7 and a main runner 4;

[0044] S4, assembling: vertically bonding the main runner 4 at the converging position of the plurality of transverse runners 3; bonding the lower runner plate 200 and the upper runner plate 100 by using the first vertical runner 6 and the second vertical runner 7; bonding the casting wax pattern 8 on the first vertical runner 6 and the second vertical runner 7, and the bonding position must be smooth and round, and cracks, sharp corners and local pits are not allowed.

[0045] Further, in the step S2, two support blocks 2a are integrally pressed on the outer circumferential surface of the lower annular runner 2 when the lower runner plate 200 is prepared.

[0046] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation under the inventive concept of the present application, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A titanium alloy casting pouring system, characterized in that: It comprises a main runner (4), an upper annular runner (1) and a lower annular runner (2), wherein the upper annular runner (1) is arranged at intervals just above the lower annular runner (2); A plurality of horizontal runners (3) are evenly distributed in a circular pattern on the inner circumference of the lower annular runner (2); and the inner ends of the plurality of horizontal runners (3) converge at the center of the circle of the lower annular runner (2); The main runner (4) is vertically arranged, and the lower end of the main runner (4) is connected to the converging portion of the plurality of cross runners (3), and the upper end of the main runner (4) extends upward from the center of the upper annular runner (1); A plurality of first vertical runners (6) are provided between the upper annular runner (1) and the lower annular runner (2); A corresponding transverse short runner (5) is provided directly above each horizontal runner (3), and the outer end of the transverse short runner (5) is bonded to the inner circumference of the upper annular runner (1), and the inner end faces the center of the upper annular runner (1); a second vertical runner (7) is provided between the lower surface of the inner end of each transverse short runner (5) and the corresponding horizontal runner (3); In the circumferential direction, the first vertical runner (6) and the second vertical runner (7) are arranged alternately; A plurality of casting wax molds (8) are respectively bonded to the first vertical pouring channel (6) and the second vertical pouring channel (7).

2. The titanium alloy casting gating system according to claim 1, characterized in that: The inner diameter of the upper annular runner (1) is The length of the transverse short runner (5) is L, which satisfies:

3. The titanium alloy casting gating system according to claim 1, characterized in that: The number of the horizontal runners (3) is six, and the number of the first vertical runners (6) is six.

4. The titanium alloy casting gating system according to claim 1, characterized in that: The horizontal runner (3) comprises a straight portion (3a) and an arcuate portion (3b); one end of the arcuate portion (3b) is connected to the inner circumferential surface of the lower annular runner (2), and the other end is connected to the straight portion (3a).

5. The titanium alloy casting gating system according to claim 1, wherein: Two support blocks (2a) are provided on the outer peripheral surface of the lower annular runner (2).

6. The titanium alloy casting gating system according to claim 1, wherein: The dimensions of the upper annular runner (1) and the lower annular runner (2) are:

7. The titanium alloy casting gating system according to claim 1, wherein: A plurality of reinforcing columns (9) are respectively provided between the casting wax mold (8) and the first vertical runner (6) and the second vertical runner (7).

8. A method for manufacturing a titanium alloy casting gating system according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. Preparing an upper runner plate (100): the upper runner plate (100) comprises an upper annular runner (1) and a plurality of transverse short runners (5) uniformly distributed on the inner circumference of the upper annular runner (1), and the upper runner plate (100) is prepared by integral pressing; S2. preparing a lower runner plate (200): the lower runner plate (200) comprises a lower annular runner (2) and a plurality of horizontal runners (3) uniformly distributed on the inner circumference of the lower annular runner (2), and the lower runner plate (200) is prepared by integral pressing; S3, preparing the first vertical runner (6), the second vertical runner (7) and the main runner (4) respectively; S4, assembly: vertically bond the main runner (4) to the converging portion of the plurality of horizontal runners (3); bond the lower runner plate (200) and the upper runner plate (100) together using the first vertical runner (6) and the second vertical runner (7); bond the casting wax mold (8) to the first vertical runner (6) and the second vertical runner (7).

9. The method for manufacturing a titanium alloy casting gating system according to claim 8, wherein: In the step S2, when preparing the lower runner plate (200), two support blocks (2a) are integrally pressed on the outer peripheral surface of the lower annular runner (2).

10. The method for manufacturing a titanium alloy casting gating system according to claim 8, wherein: In step S4, the bonding parts must be smooth and have a smooth transition, and no cracks, sharp corners or local pits are allowed.

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