Feeding performance evaluation device and casting system for feeding performance evaluation

Abstract

The invention provides a feeding performance evaluation device and a casting system for feeding performance evaluation, and relates to the technical field of high-temperature alloy. A plurality of drainage cross gates are arranged, and each drainage cross gate is connected with a plurality of feeding heads; the plurality of feeding heads connected to the same drainage cross gate have different moduli, each feeding head is connected with a thin-wall test piece, and the thin-wall test pieces connected to the same drainage cross gate have the same thickness; the thicknesses of the thin-wall test pieces connected to the different drainage cross gates are different, and the incidence relation between the modulus of the feeding head and the feeding distance and the incidence relation between the wall thickness of the thin plate and the feeding distance are established, so that a basis is provided for reasonable arrangement of the feeding heads of the large-area thin-wall characteristic structural part; the technical problems that in the prior art, a traditional alloy performance evaluation system is complex, and the evaluation process is long are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of superalloys, and in particular to a feeding performance evaluation device and a gating and risering system for feeding performance evaluation. Background Art

[0002] In recent years, with the rapid development of equipment such as aerospace, aviation, and energy, increasingly stringent requirements have been put forward for nickel-based superalloy castings. In order to meet the weight reduction requirements, the wall thickness of superalloy castings has been continuously reduced. The large-area thin-wall feature makes it difficult to control the micro-porosity level in the casting.

[0003] In order to control the porosity defect as much as possible, foundry engineers often set a large number of feeding risers on the casting according to past experience, resulting in a decrease in the casting yield, a large amount of material waste, and great difficulties for subsequent processing. Therefore, it is necessary to clarify the relationship between the feeding riser, wall thickness and feeding distance of cast superalloys, so as to provide a theoretical basis for the scientific and efficient design of feeding risers for superalloy castings with large-area thin-wall features.

[0004] Currently, there are some related technical patents. For example, the patent with the authorization announcement number CN 103691882 B discloses a complex thin-wall investment casting and method for evaluating the casting performance of nickel-based alloys, which can obtain the comprehensive casting performance of nickel-based cast superalloys such as the large-area thin-wall filling ability, hot cracking tendency, feeding distance, and bottom-gating filling ability of nickel-based cast superalloys at one time. However, the model system of this method is extremely complex, the casting and evaluation process is long, the cost is extremely high, and the influence of riser modulus on the feeding distance is not considered.

[0005] In addition, there are also some related research papers. For example, in the paper "Research on Feeding Distance and Shrinkage Porosity Criterion of GH3230 Alloy Thermal Control Solidification Test Plate" published by Liao Jiali et al. in 2023, the feeding distance of GH3230 alloy specimens with different wall thickness plate types was studied. However, the feeding performance test model in this research also did not consider the change of riser size. Summary of the Invention

[0006] The purpose of the present invention is to provide a feeding performance evaluation device and a gating and risering system for feeding performance evaluation, so as to alleviate the technical problems of complex traditional alloy performance evaluation systems and long evaluation processes existing in the prior art.

[0007] In a first aspect, the feeding performance evaluation device provided by the present invention includes: a diversion cross-riser and a feeding riser;

[0008] A plurality of the diversion cross-risers are provided, and a plurality of the feeding risers are connected to each of the diversion cross-risers;

[0009] The moduli of a plurality of the risers connected to the same overflow runner are all different;

[0010] Each of the risers is connected to a thin-walled specimen;

[0011] The thicknesses of the thin-walled specimens connected to the same overflow runner are the same;

[0012] The thicknesses of the thin-walled specimens connected to different overflow runners are all different.

[0013] In an alternative embodiment,

[0014] The riser performance evaluation device further includes a buffer sprue;

[0015] The buffer sprue communicates with a plurality of the overflow runners.

[0016] In an alternative embodiment,

[0017] The riser performance evaluation device further includes a pouring cup;

[0018] The pouring cup is arranged at the top of the buffer sprue.

[0019] In an alternative embodiment,

[0020] The buffer sprue is arranged in a cylindrical shape;

[0021] A plurality of the overflow runners are uniformly arranged at intervals along the outer circumference of the buffer sprue.

[0022] In an alternative embodiment,

[0023] The length dimensions of the thin-walled specimens connected to a plurality of the overflow runners are the same;

[0024] The width dimensions of the thin-walled specimens connected to a plurality of the overflow runners are the same;

[0025] The thickness dimensions of the thin-walled specimens connected to a plurality of the overflow runners are all different.

[0026] In an alternative embodiment,

[0027] The dimensions of a plurality of the overflow runners are the same.

[0028] In an alternative embodiment,

[0029] There are three overflow runners, and the thickness dimensions of the thin-walled specimens connected to the three overflow runners are 2 mm, 5 mm, and 8 mm respectively.

[0030] In an alternative embodiment,

[0031] The length dimension of the thin-walled test pieces connected to the three gating runners is 150 mm;

[0032] The width dimension of the thin-walled test pieces connected to the three gating runners is 100 mm.

[0033] In an alternative embodiment,

[0034] Three feeder risers are provided on the same gating runner, and the moduli are 3.84, 4.68, and 5.84 respectively.

[0035] In a second aspect, a gating-riser system for evaluating feeding performance provided by the present invention includes the feeding performance evaluation device.

[0036] The feeding performance evaluation device provided by the present invention is provided with a plurality of gating runners, and a plurality of feeder risers are connected to each gating runner. The moduli of the plurality of feeder risers connected to the same gating runner are all different. Each feeder riser is connected to a thin-walled test piece. The thicknesses of the thin-walled test pieces connected to the same gating runner are the same, and the thicknesses of the thin-walled test pieces connected to different gating runners are all different. By establishing the correlation between the modulus of the feeder riser and the feeding distance, and between the thickness of the thin plate wall and the feeding distance, it provides a basis for the reasonable arrangement of the feeder risers for large-area thin-walled characteristic structural parts, and alleviates the technical problems of the complex traditional alloy performance evaluation system and long evaluation process existing in the prior art. Description of the Drawings

[0037] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0038] Figure 1 It is a schematic diagram of the overall structure of the feeding performance evaluation device provided by the embodiment of the present invention.

[0039] Reference numerals: 100 - gating runner; 200 - feeder riser; 300 - thin-walled test piece; 400 - buffer sprue; 500 - pouring basin. Detailed Embodiments

[0040] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. The components of the embodiments of the present invention usually described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0042] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0043] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is customarily placed during use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0044] In addition, the terms "horizontal", "vertical", "overhanging", etc. do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0045] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] The following will describe in detail some embodiments of the present invention with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0047] Traditional complex thin-walled investment castings and methods for evaluating the casting performance of nickel-based alloys have an extremely complex model system, a long casting and evaluation process, extremely high costs, and do not consider the influence of riser modulus on the feeding distance.

[0048] In view of this, as Figure 1 shown, the feeding performance evaluation device provided in this embodiment includes: a diversion cross-riser 100 and a feeding riser 200.

[0049] There are multiple diversion cross-risers 100, and the specific number of the diversion cross-risers 100 can be determined according to the actual situation. Each diversion cross-riser 100 is connected with multiple feeding risers 200, and the specific number of the feeding risers 200 can be determined according to the actual situation.

[0050] The moduli of the multiple feeding risers 200 connected to the same diversion cross-riser 100 are all different.

[0051] Each feeding riser 200 is connected with a thin-walled specimen 300.

[0052] The thicknesses of the thin-walled specimens 300 connected to the same diversion cross-riser 100 are the same.

[0053] The thicknesses of the thin-walled specimens 300 connected to different diversion cross-risers 100 are all different.

[0054] The feeding performance evaluation device provided in this embodiment, by setting multiple diversion cross-risers 100, each diversion cross-riser 100 is connected with multiple feeding risers 200, and the moduli of the multiple feeding risers 200 connected to the same diversion cross-riser 100 are all different. Each feeding riser 200 is connected with a thin-walled specimen 300, the thicknesses of the thin-walled specimens 300 connected to the same diversion cross-riser 100 are the same, and the thicknesses of the thin-walled specimens 300 connected to different diversion cross-risers 100 are all different. By using feeding risers 200 with different riser moduli and large-area thin plates with different wall thicknesses, the correlation between the riser modulus of the feeding riser 200 and the feeding distance, and the wall thickness of the thin plate and the feeding distance is established, providing a basis for the reasonable layout of the feeding riser 200 for large-area thin-walled characteristic structural parts, and alleviating the technical problems of complex traditional alloy performance evaluation systems and long evaluation processes existing in the prior art.

[0055] In an optional embodiment, the feeding performance evaluation device further includes a buffer sprue 400; the buffer sprue 400 is communicated with the multiple diversion cross-risers 100.

[0056] Specifically, the buffer sprue 400 is located in the middle part, and multiple diversion cross sprues 100 are arranged around the outer circumference of the buffer sprue 400.

[0057] In an alternative embodiment, the feeding performance evaluation device further includes a pouring cup 500; the pouring cup 500 is arranged on the top of the buffer sprue 400.

[0058] Specifically, the pouring cup 500 is conical and is used to guide the molten metal into the mold during the metal casting process. In addition, the conical pouring cup 500 can effectively reduce the direct impact of the molten metal when poured into the mold, prevent the mold from being damaged or deformed, control the speed of the molten metal flowing into the mold, ensure a smooth filling process, and avoid defects such as splashing or air holes caused by too fast flow rate.

[0059] In an alternative embodiment, the buffer sprue 400 is arranged in a cylindrical shape; multiple diversion cross sprues 100 are evenly spaced along the outer circumference of the buffer sprue 400, that is, multiple diversion cross sprues 100 are arranged around the outer circumference of the buffer sprue 400.

[0060] In an alternative embodiment, the length dimensions of the thin-walled specimens 300 connected to the multiple diversion cross sprues 100 are all the same; the width dimensions of the thin-walled specimens 300 connected to the multiple diversion cross sprues 100 are all the same; the thickness dimensions of the thin-walled specimens 300 connected to the multiple diversion cross sprues 100 are all different.

[0061] In an alternative embodiment, the dimensions of the multiple diversion cross sprues 100 are all the same.

[0062] In an alternative embodiment, there are three diversion cross sprues 100, and the thickness dimensions of the thin-walled specimens 300 connected to the three diversion cross sprues 100 are 2 mm, 5 mm, and 8 mm respectively.

[0063] In an alternative embodiment, the length dimension of the thin-walled specimens 300 connected to the three diversion cross sprues 100 is 150 mm; the width dimension of the thin-walled specimens 300 connected to the three diversion cross sprues 100 is 100 mm.

[0064] In an alternative embodiment, there are three feeding risers 200 connected to the same diversion cross sprue 100, and the moduli are 3.84, 4.68, and 5.84 respectively.

[0065] The feeding performance evaluation device provided in this embodiment uses investment casting to cast the casting. On the premise of ensuring consistent experimental conditions, the quantitative correlation between the feeding distance of large-area thin plate parts of nickel-based cast superalloy, the modulus of the feeding riser 200, and the wall thickness of the thin plate is obtained at one time, greatly shortening the time for obtaining process parameters and providing basic data for reasonably setting the feeding riser 200 under different thickness conditions of thin plate specimens.

[0066] A gating and risering system for feeding performance evaluation provided in this embodiment includes a feeding performance evaluation device.

[0067] Since the technical effects of the gating and risering system for feeding performance evaluation provided in this embodiment are the same as those of the feeding performance evaluation device provided in the above embodiment, they will not be elaborated here.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An evaluation device for feeding performance, characterized in that Comprising: a runner (100) and risers (200); a plurality of said runners (100) are provided, and a plurality of said risers (200) are connected to each said runner (100); the moduli of the plurality of said risers (200) connected to the same said runner (100) are all different; each said riser (200) is connected to a thin-walled specimen (300); the thicknesses of the thin-walled specimens (300) connected to the same said runner (100) are the same; the thicknesses of the thin-walled specimens (300) connected to different said runners (100) are all different.

2. The riser performance evaluation device according to claim 1, wherein the riser performance evaluation device further comprises a buffer sprue (400); the buffer sprue (400) communicates with a plurality of said runners (100).

3. The riser performance evaluation device according to claim 2, wherein the riser performance evaluation device further comprises a pouring basin (500); the pouring basin (500) is arranged at the top of the buffer sprue (400).

4. The riser performance evaluation device according to claim 3, wherein the buffer sprue (400) is arranged in a cylindrical shape; a plurality of said runners (100) are evenly spaced along the outer circumference of the buffer sprue (400).

5. The riser performance evaluation device according to claim 1, wherein the length dimensions of the thin-walled specimens (300) connected to a plurality of said runners (100) are the same; the width dimensions of the thin-walled specimens (300) connected to a plurality of said runners (100) are the same; the thickness dimensions of the thin-walled specimens (300) connected to a plurality of said runners (100) are all different.

6. The riser performance evaluation device according to claim 5, wherein the dimensions of a plurality of said runners (100) are the same.

7. The riser performance evaluation device according to claim 6, wherein three said runners (100) are provided, and the thickness dimensions of the thin-walled specimens (300) connected to the three said runners (100) are 2 mm, 5 mm, and 8 mm respectively.

8. The riser performance evaluation device according to claim 7, wherein the length dimension of the thin-walled specimens (300) connected to the three said runners (100) is 150 mm; the width dimension of the thin-walled specimens (300) connected to the three said runners (100) is 100 mm.

9. The riser performance evaluation device according to claim 1, wherein three said risers (200) are connected to the same said runner (100), and the moduli are 3.84, 4.68, and 5.84 respectively.

10. A gating and risering system for evaluating feeding performance, characterized in that, Comprising the riser performance evaluation device according to any one of claims 1-9.

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