Novel shunting disc

Abstract

The utility model relates to the technical field of metal casting, in particular to a novel flow dividing disc which comprises a flow dividing disc body and flow dividing baffles which are arranged on the two sides of the flow dividing disc in a staggered mode and used for blocking alloy melt, a flow dividing channel is arranged between every two adjacent flow dividing baffles, and an introduction area communicated with the flow dividing channels is arranged at one end of the flow dividing disc. The problems that in the casting process in the prior art, eddy currents and turbulent currents are generated when alloy molten liquid flows, too many bubbles are involved in the alloy molten liquid, an oxidation film on the surface of the alloy molten liquid enters a casting mold along with liquid flow, and casting manufacturing defects are caused are solved. And the quality and the parameter stability of the casting can be improved.

Description

Technical Field

[0001] The utility model relates to a novel diverter plate and belongs to the technical field of metal casting. Background Art

[0002] In the process of preparing high-temperature alloys, a diverter plate and a casting mold are usually used to cooperate with each other for casting. During casting, the alloy melt in the crucible of a vacuum furnace needs to be poured into the diverter plate, and after being diverted by the diverter, it enters the casting mold for forming. The utility model patent with publication number CN203992252U discloses a steel water diverter, including a diverter pool and a guide hole. Four partitions are arranged in the diverter pool; one end of the partition is connected to the pool wall on one side of the diverter pool, and the other end is gapped with the pool wall on the other side of the diverter pool; the gaps between the partitions and between the partitions and the pool wall of the diverter pool form a plurality of guide grooves, and the plurality of guide grooves together constitute an arched guide groove; a small groove is arranged in the guide groove, and the guide hole is arranged at the bottom of the small groove, and 6 guide holes are arranged at the bottom of each row of small grooves, and the groove width of the guide groove formed between at least one row of two adjacent partitions is greater than the diameter of the bottom of the molten steel filter. However, in the actual preparation process, it was found that the alloy melt would experience eddy currents, turbulence, and splashing during casting, resulting in a large number of bubbles and oxide films being drawn into the alloy melt, seriously affecting the quality and parameter stability of the castings and causing a variety of casting defects. Utility Model Content

[0003] The utility model aims at the deficiencies in the prior art and provides a novel diverter plate.

[0004] The utility model solves the above-mentioned technical problems with the following technical solutions: a novel diverter plate, comprising a diverter plate body and diverter baffles staggered on both sides of the diverter plate for isolating the alloy melt, a diverter channel is arranged between adjacent diverter baffles, an introduction area connected to the diverter channel is arranged at one end of the diverter plate, and the diverter channel is provided with a plurality of diverter ports with polygonal cross-sections.

[0005] Furthermore, the diversion port is a conical structure, including an inflow end and an outflow end, and the cross-sectional area of ​​the inflow end is larger than the cross-sectional area of ​​the outflow end.

[0006] Furthermore, the cross-sectional area of ​​the inflow end is 2-3 times the cross-sectional area of ​​the outflow end.

[0007] Furthermore, the outflow end protrudes from the bottom of the diverter plate.

[0008] Furthermore, a boss with a high middle and low ends is arranged between adjacent diversion ports in the diversion channel, and the two ends of the boss are arranged to be arc-shaped and concave toward the center of the boss, and a shrinkage-feeding cavity is formed between adjacent bosses.

[0009] Further, the width D1 of the inflow end is 0.7 - 0.9 times the width D2 of the shunt channel.

[0010] Further, the connection between the feeding cavity and the shunt port is provided with a rounded corner.

[0011] Further, the cross-section of the shunt channel is semi-circular and an arc transition is provided at the corner of the shunt channel.

[0012] Further, the height of the shunt disk on the side close to the introduction area is greater than the height of the shunt disk on the side far from the introduction area, and the slope of the shunt disk is 5 - 10 degrees.

[0013] Further, the height of the shunt baffle on the side close to the introduction area is greater than the height of the shunt baffle on the side far from the introduction area.

[0014] The present utility model provides a novel shunt disk, which has the following beneficial technical effects compared with the prior art:

[0015] (1) Through the cooperation of the polygonal shunt port, shunt channel and convex platform provided by the present utility model, the problems in the prior art during casting, such as the generation of eddy currents and turbulence during the flow of the alloy melt, resulting in excessive bubbles being involved in the alloy melt, and the oxide film on the surface of the alloy solution entering the casting mold along with the liquid flow, causing casting defects, are solved, which helps to improve the quality and parameter stability of the casting.

[0016] (2) Through the shunt disk and shunt baffle with a height difference provided by the present utility model, the problem in the prior art during casting, such as the long flow time of the alloy melt and the generation of more oxide films on the surface, is solved, which helps to further improve the quality and parameter stability of the casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a top view of an embodiment of the present utility model;

[0018] Figure 2 is a cross-sectional view of an embodiment of the present utility model;

[0019] Figure 3 is a schematic structural view of the convex platform of an embodiment of the present utility model.

[0020] The meanings of the marks in the figure are as follows: 1. Shunt disk; 2. Shunt baffle; 3. Introduction area; 4. Shunt channel; 5. Shunt port; 51. Inflow end; 52. Outflow end; 6. Convex platform; 7. Feeding cavity. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will give a detailed description of the specific embodiments of the present utility model. The present utility model can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used are only for describing specific embodiments and do not limit the present utility model.

[0023] As Figure 1 shown, a new type of flow splitting plate includes a flow splitting plate 1 body. A number of flow splitting baffles 2 for blocking alloy melt are integrally formed in a staggered manner on both sides of the flow splitting plate 1. A flow splitting channel 4 is provided between adjacent flow splitting baffles 2. The flow splitting channel 4 is integrally formed on the upper surface of the flow splitting plate 1. The flow splitting channel 4 provides a flow path for the alloy melt. The flow splitting channel 4 is a curved S shape. The flow splitting channel 4 can also be other shapes, such as annular, linear, etc. An introduction area 3 for pouring alloy melt is integrally formed on one side of the flow splitting plate 1. The introduction area 3 is connected to the flow splitting channel 4 by an arc transition. A number of flow splitting ports 5 are opened on the flow splitting channel 4. The flow splitting ports 5 penetrate the flow splitting plate 1 for connecting the flow splitting plate 1 with a casting mold. In the embodiment of the present utility model, 12 flow splitting ports 5 are vertically opened on the flow splitting channel 4. Of course, different numbers of flow splitting ports 5 can be opened according to different needs, and the flow splitting ports 5 can also be set at different inclination angles according to different needs. The cross-section of the flow splitting port 5 is a polygon. Because compared with a circle, a polygon can suppress the vortex and turbulent flow phenomena generated when the alloy melt flows through, avoiding the problem that too many bubbles are involved in the alloy melt during the casting process, resulting in casting manufacturing defects. In the embodiment of the present utility model, the flow splitting port 5 is set as a square, and it can also be a polygon structure such as a rectangle, a triangle, a pentagon, etc.

[0024] Specifically, the flow splitting port 5 has a tapered structure with one end thick and the other end thin. The end close to the flow splitting channel 4 is the inflow end 51, and the end close to the casting mold is the outflow end 52. The cross-sectional area of the inflow end 51 is larger than that of the outflow end 52. Because during the casting process, under the action of gravitational acceleration, when the alloy melt is cast through the flow splitting port 5, as the falling distance increases, the flow rate of the alloy melt increases and the cross-sectional area of the alloy melt flow gradually decreases. By setting the flow splitting port 5 as a tapered structure, during the process of the alloy melt entering the casting mold through the flow splitting port 5, the cross-section of the flow splitting port 5 can match the cross-section of the alloy melt flow. On the one hand, it can inhibit the scattering and splashing of the alloy melt when flowing out of the flow splitting port 5, and further avoid the situation that excessive bubbles are involved in the alloy melt during the casting process, resulting in casting manufacturing defects. On the other hand, because an oxide film will be generated on the surface of the alloy melt, and through the close contact between the alloy melt flow and the inner wall of the flow splitting port 5, most of the oxide film on the surface of the alloy melt will adhere to the inner wall of the flow splitting port 5, reducing the oxide film entering the casting mold along with the alloy melt, and avoiding the casting manufacturing defects caused by the oxide film on the surface of the alloy melt entering the casting mold, which helps to improve the quality and parameter stability of the casting. Preferably, the cross-sectional area of the inflow end 51 is 2-3 times that of the outflow end 52. When the cross-sectional area of the inflow end 51 is less than 2 times that of the outflow end 52, the outflow end 52 is relatively wide and straight. During the casting process of the alloy melt flowing through the flow splitting port 5 into the casting mold, the cross-section of the alloy melt flow is smaller than the cross-section of the outflow end 52, resulting in poor contact effect between the alloy melt flow and the inner wall of the outflow end 52 of the flow splitting port 5, and unable to prevent the oxide film on the surface of the alloy melt from entering the casting mold. When the cross-sectional area of the inflow end 51 is greater than 3 times that of the outflow end 52, the outflow end 52 is relatively constricted, and the cross-section of the alloy melt flow is larger than the cross-section of the outflow end 52, resulting in the alloy melt flow colliding with the inner wall of the outflow end 52 of the flow splitting port 5, leading to the scattering and splashing of the alloy melt, and causing excessive bubbles to be involved in the alloy melt, resulting in casting manufacturing defects.

[0025] Specifically, in the embodiment of the present invention, the outflow end 52 protrudes from the bottom of the flow splitting disc 1. When it is necessary to install the flow splitting disc 1 and the casting mold, the protruding part is used to position the flow splitting disc 1 to prevent alloy melt overflow caused by improper installation.

[0026] Specifically, a plurality of bosses 6 are provided in the diverter channel 4, and the bosses 6 are provided between adjacent diverter ports 5. The two sides and the bottom of the bosses 6 are connected to the inner walls on both sides and the inner wall on the bottom of the diverter channel 4. The bosses 6 are arched structures with low ends near the diverter ports 5 and high middle. The vertical height of the highest point in the middle of the bosses 6 is 0.3 to 0.4 times the vertical height of the diverter channel 4. If the height of the highest point in the middle of the bosses 6 is higher than 0.4 times the vertical height of the diverter channel 4, the flow of the alloy melt will be obstructed, resulting in insufficient alloy melt in the rear section of the diverter channel 4, thereby affecting the casting quality. If the vertical height of the highest point in the middle of the bosses 6 is lower than 0.3 times the vertical height of the diverter channel 4, the stored alloy melt will be insufficient to compensate for the shrinkage of the casting, which will also affect Casting quality; the cavity formed between the two adjacent bosses 6 and around the diversion port 5 is a shrinkage feeding cavity 7, which can accommodate and store molten alloy and supply molten alloy to the casting during the casting process to prevent shrinkage cavities and shrinkage, and ensure that the liquid and solid shrinkage of the casting during the solidification process can be compensated. Preferably, because the flow speed of the molten alloy will slow down at the turning point of the diversion channel 4, it is not necessary to set the boss 6 at the turning point of the diversion channel 4 to achieve the required casting effect. The two ends of the boss 6 close to the diversion port 5 are set to a concave arc shape toward the center of the boss 6, so that the shape of the shrinkage feeding cavity 7 is nearly circular. Setting the shrinkage feeding cavity 7 to be nearly circular will cause a certain vortex to be generated when the alloy melt is compensated for shrinkage, thereby improving the speed and quality of the shrinkage feeding casting.

[0027] Specifically, a streamlined fillet is provided at the connection between the diverter port 5 and the feeding chamber 7. Compared with a right-angle transition, the streamlined fillet buffers the molten alloy when it flows through, and can further avoid turbulence when the molten alloy enters the diverter port 5, thereby avoiding the molten alloy from being involved in too many bubbles and affecting the quality of the casting. Preferably, the width D1 of the inlet end 51 of the diverter port 5 is 0.7 times to 0.9 times the width D2 of the diverter channel 4. When the width D1 of the inlet end 51 of the diverter port 5 is less than 0.7 times the width D2 of the diverter channel 4, when feeding is performed, the molten alloy retained in the diverter port 5 for feeding is Although too much molten gold can ensure the liquid and solid shrinkage of the shrinkage-feeding casting during the solidification process, it will increase the cleaning time after casting and reduce work efficiency. When the width D1 of the inlet end 51 of the diverter port 5 is greater than 0.9 times the width D2 of the diverter channel 4, because the distance between the inlet end 51 and the side wall of the diverter channel 4 is too small, the fillet set at the connection between the diverter port 5 and the shrinkage-feeding cavity 7 is relatively short and straight, resulting in insufficient buffer space when the alloy melt is cast. When the alloy melt enters the diverter port 5, turbulence will be generated and too many bubbles will be involved. In addition, there is too little alloy melt used for shrinkage feeding, and shrinkage holes will appear during solidification.

[0028] Specifically, the cross-section of the flow splitting channel 4 is set to be semi-circular, and the flow splitting channel 4 is set to have an arc transition at the corner of the end of the flow splitting baffle 2. Through the above settings, it can further ensure the smooth flow of the alloy melt in the flow splitting channel 4, reduce the entrainment of bubbles, and further improve the quality and parameter stability of the casting.

[0029] Specifically, the flow splitting disk 1 is provided with a slope. The height of the flow splitting disk 1 on the side close to the introduction area 3 is greater than the height of the flow splitting disk 1 on the side far from the introduction area 3. Compared with the flow splitting disk 1 without a slope, by setting a slope for the flow splitting disk 1, it can ensure that the alloy melt flows into the flow splitting openings 5 at the rear section of the flow splitting channel 4 faster, make the liquid flow evenly enter the casting mold through each flow splitting opening 5, and reduce the flow time of the alloy melt. It can reduce the generation of the oxide film on the surface of the alloy melt, prevent too much oxide film from flowing into the casting mold along with the alloy melt and causing casting manufacturing defects, and contribute to further improving the quality and parameter stability of the casting. Preferably, the slope of the flow splitting disk 1 is 5-10 degrees. When the slope of the flow splitting disk 1 is less than 5 degrees, the flow velocity of the alloy melt is basically the same as that when the slope is zero. When the slope of the flow splitting disk 1 is greater than 10 degrees, the flow velocity of the alloy melt in the flow splitting channel 4 is too fast and the tilting angle is too large, resulting in insufficient casting of the casting mold.

[0030] Specifically, the flow splitting baffle 2 is provided with a slope. The height of the flow splitting baffle 2 on the side close to the introduction area 3 is greater than the height of the flow splitting disk 1 on the side far from the introduction area 3. Because the flow splitting disk 1 is provided with a slope, when casting, the alloy melt will tilt at a certain angle in the flow splitting channel 4. Through the above settings, it can avoid the alloy melt from overflowing during the flowing process.

[0031] Table 1 is a comparison table of the finished product quality and parameters of various sizes of the embodiments of the present invention. It can be seen from the evaluation results of Embodiment 1, Embodiment 2, and Embodiment 3 that when the cross-sectional area of the inflow end (51) is 2-3 times the cross-sectional area of the outflow end (52), and the width D1 of the inflow end (51) is 0.7-0.9 times the width D2 of the flow splitting channel (4), the finished product quality and parameter stability of the casting are ensured.

[0032]

[0033] Table 1

[0034] The technical features of the above-mentioned embodiments can be combined arbitrarily. For the sake of concise description, all possible combinations of the technical features in the above-mentioned embodiments are not exhausted. However, as long as the combinations of these technical features do not conflict, they should all be considered to be within the scope described in this specification.

[0035] For those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model. The protection scope of the present utility model shall be subject to the appended claims.

Claims

1. A new type of diverter plate, characterized by: It comprises a flow distribution plate (1) body and flow distribution baffles (2) arranged alternately on both sides of the flow distribution plate (1) for isolating alloy melt, a flow distribution channel (4) is arranged between adjacent flow distribution baffles (2), an introduction area (3) connected to the flow distribution channel (4) is arranged at one end of the flow distribution plate (1), and the flow distribution channel (4) is provided with a plurality of flow distribution ports (5) with polygonal cross sections; The height of the side of the diverter plate (1) close to the introduction area (3) is greater than the height of the side of the diverter plate (1) away from the introduction area (3), and the slope of the diverter plate (1) is 5-10 degrees; The height of the flow dividing baffle (2) on the side close to the introduction area (3) is greater than the height of the flow dividing baffle (2) on the side away from the introduction area (3).

2. A new type of diverter plate according to claim 1, characterized in that: The diversion port (5) is a conical structure, comprising an inflow end (51) and an outflow end (52), and the cross-sectional area of ​​the inflow end (51) is larger than the cross-sectional area of ​​the outflow end (52).

3. A new type of diverter plate according to claim 2, characterized in that: The cross-sectional area of ​​the inflow end (51) is 2-3 times the cross-sectional area of ​​the outflow end (52).

4. A new type of diverter plate according to claim 2, characterized in that: The outflow end (52) protrudes from the bottom of the diverter plate (1).

5. A new type of diverter plate according to claim 2, characterized in that: A boss (6) having a high center and low ends is arranged between adjacent diversion openings (5) in the diversion channel (4); the two ends of the boss (6) are arranged to be circular arc-shaped and concave toward the center of the boss (6); and a feeding cavity (7) is formed between adjacent bosses (6).

6. A new type of diverter plate according to claim 5, characterized in that: The width D1 of the inflow end (51) is 0.7-0.9 times the width D2 of the diversion channel (4).

7. A new type of diverter plate according to claim 6, characterized in that: The connection between the feeding cavity (7) and the diversion port (5) is arranged as a rounded corner (8).

8. A novel diverter plate according to claim 1, characterized in that: The cross section of the diversion channel (4) is semicircular and arc transitions are arranged at the corners of the diversion channel (4).

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