Casting mold capable of improving yield of base plates of high-speed rail
By designing a dual-cavity mold and controlling the flow of molten iron, the problems of component segregation and non-dense microstructure in the casting of high-speed rail pads were solved, enabling efficient production of high-quality high-speed rail pads, improving the yield and reducing the scrap rate.
Patent Information
- Application Number
- CN202422886868.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-11-26
AI Technical Summary
The existing casting process for high-speed rail pads has defects such as component segregation, loose structure, relative lack of toughness, coarse grains, and shrinkage cavities, resulting in low casting capacity and efficiency, and making it difficult to guarantee product delivery time.
The design employs a dual-cavity mold, with both cavities sharing a common first riser. By calculating and adjusting the flow rates of molten iron at the first and second risers, the stability of molten iron filling is ensured, the formation of sand and slag holes is reduced, good feeding conditions are provided, internal defects in the casting are reduced, and the casting quality is improved.
This improved the yield of high-speed rail base plates, reduced the scrap rate of castings, increased production efficiency, and met the quality requirements of high-speed rail castings.
Smart Images
Figure CN223629463U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the casting technical field of high -speed rail backing plate, specifically discloses a casting mould that can improve the high -speed rail backing plate yield. BACKGROUND
[0002] The main role of high-speed rail cast iron backing plate is to bear concrete sleeper and improve the elasticity of elastic backing plate under the track, through providing necessary buffer and shock isolation effect, high-speed rail backing plate can reduce the impact on track and roadbed when train runs, protect track system from damage, through optimizing the elastic performance of high-speed rail backing plate, improve the elastic modulus of track, thereby reduce the track subsidence, keep the stability and flatness of track, improve the smoothness of track: through reducing the unevenness of track, improve the smoothness of track, and further improve the comfort and safety of driving, in addition, cast iron backing plate also has excellent performance of waterproof, moistureproof, corrosion resistance and aging resistance, can guarantee the long service life of track system.These characteristics make cast iron backing plate become an important part in high-speed rail construction.
[0003] With the rapid development of heavy load, high-speed railway transportation, the performance of high-speed rail backing plate such as damping, impact resistance and service life needs to be improved.Currently, high-speed rail backing plate adopts DISA230 vertical linear film sand casting, due to the composition segregation, organization not dense, relative lack of toughness, coarse grain, shrinkage and other defects in casting process, and the conventional layout can only place one piece, the production efficiency of castings is low, and it is difficult to guarantee the delivery period of products. SUMMARY
[0004] In order to solve the problems in the background art, the utility model discloses a casting mould that can improve the high-speed rail backing plate yield, comprising two casting cavities, the two casting cavities share a first riser, which improves the pouring quality, reduces the casting scrap rate and improves the production efficiency.
[0005] In order to achieve the above-mentioned purposes, the utility model adopts the following technical scheme:
[0006] A casting mould that can improve the high-speed rail backing plate yield, comprising two same-size parting setting mould bottom plates A and B, a sprue cup is arranged on the mould bottom plate A and the mould bottom plate B, the main runner on both sides of the bottom of the sprue cup is connected with the horizontally arranged cross runner, the middle part of the cross runner is connected with the upper end of the vertically arranged vertical runner, the lower end of the vertical runner is communicated with the bottom of the casting cavity arranged on both sides of the vertical runner through the first riser, the two ends of the cross runner are respectively connected with the second riser side water inlet arranged on the top outside of the casting cavity through the inclined runner, and the bottom of the second riser is connected with the top water inlet of the casting cavity.
[0007] Further, the casting mold capable of improving the yield of high-iron cushion plate is provided with a slag-avoiding sheet at the position where the main runner and the cross runner are connected.
[0008] Further, the casting mold capable of improving the yield of high-iron cushion plate is provided with a slag-avoiding sheet at the position where the main runner and the cross runner are connected.
[0009] Further, the casting mold capable of improving the yield of high-iron cushion plate is provided with a slag-avoiding sheet at the position where the main runner and the cross runner are connected.
[0010] Compared with the prior art, the casting mold capable of improving the yield of high-iron cushion plate has the beneficial effects that:
[0011] The casting mold capable of improving the yield of high-iron cushion plate has the beneficial effects that: the main runner at both sides of the bottom of the runner cup is connected with the horizontally arranged cross runner, the middle part of the cross runner is connected with the upper end of the vertically arranged vertical runner, the lower end of the vertical runner is communicated with the bottom of the casting cavity arranged at both sides of the vertical runner through the first riser, the both ends of the cross runner are respectively connected with the second riser side water inlet arranged outside the top of the casting cavity, the bottom of the second riser is connected with the top water inlet of the casting cavity, the stability of the molten iron filling is ensured by adjusting the molten iron flow at the first riser and the second riser, and the risk of forming the sand slag hole by washing the cavity is avoided; the second riser at the top of each casting provides a good feeding condition for the casting, reduces the internal defects of the casting, improves the pouring quality of the high-iron casting, reduces the casting scrap rate, and improves the production efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 is a structural schematic view of the casting mold bottom plate A of the utility model;
[0013] Figure 2 is a structural schematic view of the casting mold bottom plate B of the utility model;
[0014] In the above figures: 1-bottom plate A; 2-runner cup; 3-cross runner; 4-slag-avoiding sheet; 5-second riser; 6-casting cavity; 7-first riser; 8-bottom plate B; 9-main runner; 10-vertical runner. DETAILED DESCRIPTION
[0015] In order to better understand the utility model, the contents of the utility model are further illustrated below in combination with embodiments, but the contents of the utility model are not limited to the following embodiments only.
[0016] In combination with the drawings Figure 1 and the drawings Figure 2The utility model discloses a casting mould capable of improving the production rate of high-iron base plate, which comprises two mould base plates A1 and B8 of the same size and arranged in a split type, the mould base plate A1 and the mould base plate B8 are connected through positioning pins, the mould base plate A1 and the mould base plate B8 jointly form two casting cavities 6, a sprue cup 2 is arranged on the mould base plate A1 and the mould base plate B8, main runners 9 at both sides of the bottom of the sprue cup 2 are connected with horizontally arranged cross runners 3, the middle part of the cross runner 3 is connected with the upper end of a vertical runner 10 arranged in a vertical mode, the lower end of the vertical runner 10 is communicated with the bottom of the casting cavity 6 arranged at both sides of the vertical runner 10 through a first riser 7, the two ends of the cross runner 3 are respectively connected with side water inlets of second risers 5 arranged outside the top of the casting cavity 6 through inclined runners, and the bottom of the second riser 5 is connected with the top water inlet of the casting cavity 6, when pouring, the molten iron enters the main runners 9 and the cross runners 3 from the sprue cup 2 in sequence, the molten iron in the cross runner 3 first enters the first riser 7 through the vertical runner 10, and finally the molten iron in the first riser 7 flows into the casting cavity 6 through a bottom pouring mode, so that the sand scouring of the molten iron is reduced, and the product quality is improved, when the casting cavity 6 is formed to 40%-70%, preferably to 60%, the molten iron in the cross runner 3 begins to flow into the second riser 5, at this time, the molten iron in the first riser 7 and the second riser 5 simultaneously flows into the casting cavity 6 until the casting cavity 6 is formed completely, the stability of the molten iron filling is ensured by adjusting the molten iron flow at the first riser 7 and the second riser 5, and the risk of forming sand slag holes by scouring the cavity is avoided, the second riser 5 at the top of each casting provides a good feeding condition for the casting, the internal defects of the casting are reduced, the quality requirement of the high-iron casting is met, the casting mould disclosed by the utility model comprises two casting cavities 6, the second riser 5 is arranged on one side of each casting cavity 6, and the two casting cavities 6 share the first riser 7, the layout mode reduces the original number of risers, and simultaneously reduces the size of the risers, each casting only needs one riser for feeding, the production rate of the high-iron base plate is improved, the task amount of the workers for separating the risers is reduced, and the task amount of the polishers is also reduced.
[0017] As an optional design, preferably, the casting mould capable of improving the production rate of the high-iron base plate is provided with a slag-removing sheet 4 at the position where the main runner 9 and the cross runner 3 are connected, which is used for filtering the slag holes in the molten iron, ensuring the purity of the molten iron and improving the casting quality.
[0018] As an optional design, preferably, the casting mould capable of improving the production rate of the high-iron base plate is provided with a slag-removing sheet 4 at the position where the main runner 9 and the cross runner 3 are connected, which is used for filtering the slag holes in the molten iron, ensuring the purity of the molten iron and improving the casting quality.
[0019] The working process of the utility model is as follows:
[0020] When pouring, the molten iron enters the main runner 9 and the cross runner 3 from the sprue cup 2 in turn, the molten iron in the cross runner 3 enters the first riser 7 through the vertical runner 10 first, and finally the molten iron in the first riser 7 flows into the casting cavity 6 by the bottom pouring mode, reducing the sand washing of the molten iron and improving the product quality, when the casting cavity 6 is 60% of the mold filling, the molten iron in the cross runner 3 begins to flow into the second riser 5, and then the molten iron in the first riser 7 and the second riser 5 flows into the casting cavity 6 at the same time until the mold filling of the casting cavity 6 is completed, the stability of the molten iron filling is ensured by adjusting the flow of the molten iron at the first riser 7 and the second riser 5, and the risk of forming the sand slag hole by washing the cavity is avoided; the second riser 5 at the top of each casting provides a good feeding condition for the casting, reduces the internal defects of the casting, improves the pouring quality of the high-iron casting, reduces the waste product rate of the casting, and improves the production efficiency.
[0021] The above description is only the application implementation mode of the present application, but the protection scope of the present application is not limited to this, and the right scope of the present application cannot be limited by this, and any equivalent changes according to the technical scheme of the present application should be covered in the protection scope of the present application.
Claims
1. A casting mold capable of improving the yield of high iron skid plate, characterized in that: The application relates to a mold base A and a mold base B which are arranged in two identical sizes and are provided with a sprue cup, the main runner at the bottom of the sprue cup is connected with a horizontally arranged cross runner, the middle part of the cross runner is connected with the upper end of a vertically arranged vertical runner, the lower end of the vertical runner is communicated with the bottom of a casting cavity arranged at the two sides of the vertical runner through a first riser, the two ends of the cross runner are respectively connected with the side water inlets of second risers arranged outside the top of the casting cavity through inclined runners, and the bottom of the second riser is connected with the top water inlets of the casting cavity.
2. The casting mold capable of improving the yield of high-speed rail tie plates according to claim 1, characterized in that: A slag avoiding sheet is arranged at the position where the main runner and the cross runner are connected.
3. The casting mold capable of improving the yield of high-speed rail tie plates according to claim 1, characterized in that: The horizontal height of the cross runner is lower than the height of the side water inlets of the second riser.
4. The casting mold capable of improving the yield of a high-speed rail tie plate according to claim 1, characterized in that: The mold base A and the mold base B are connected through positioning pins.