Optimized structure of electro-hydraulic valve casting pouring system
By designing a channel with a multi-stage layered structure and a specific cross-sectional area ratio in the casting casting system to block slag and gas, the problem of impurities and gas inlet during casting is solved, and the quality and production efficiency of castings are improved.
Patent Information
- Application Number
- CN202420096327.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-16
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-01-16
AI Technical Summary
During the casting process, impurities and gases in the metal liquid easily enter the casting cavity, resulting in problems with slag pores and pore waste products, affecting the quality and production efficiency of the casting.
An optimized structure of an electro-hydraulic valve casting system is designed, including a mold plate, a straight runner, a transverse runner, a filter block and an inner runner. By setting up branch transverse runners and a slag collection package, the different cross-sectional area ratios are used. The channel structure and exhaust needle block slag and gas, ensuring smooth flow of metal liquid and preventing impurities and gas from entering the casting.
It effectively prevents slag and gas from entering the castings, improves the yield of castings, ensures the smooth flow of metal liquid, reduces the generation of waste products such as slag, gas, and cooling spacers, and improves production efficiency.
Smart Images
Figure CN222133371U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of casting technology, and more specifically to an optimized structure of a casting system for an electro-hydraulic valve. Background Art
[0002] The casting gating system is a very important part of the casting process. The quality of its design directly affects the quality, production efficiency and cost of the casting. If the impurities in the molten metal flow into the casting cavity without effective blocking and isolation, it will cause slag holes in the casting. And if the molten metal flows unsteadily in the cavity, the molten metal is likely to be drawn into the gas and brought into the casting, causing pores. Therefore, it is very necessary to optimize the casting gating system. Utility Model Content
[0003] In order to overcome the above-mentioned defects of the prior art, the embodiment of the utility model provides an optimized structure of an electro-hydraulic valve casting system. The technical problem to be solved by the present invention is: how to effectively prevent the slag and pore waste problems generated during the casting process.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an optimized structure of an electro-hydraulic valve casting system, including a mold plate, the mold plate including upper and lower detachable split plates, a pouring channel and a casting external limiter arranged on the bottom surface of the mold plate are installed between the upper and lower split plates, the pouring channel is composed of a straight runner, a cross runner, a filter block and an ingrowth, and the straight runner, the cross runner, the filter block and the ingrowth are interconnected, and branch cross runners are arranged on both sides of the cross runner and between the ingrowth, the branch cross runners serve as metal liquid diversion, a slag collecting bag and an exhaust needle arranged on the top of the slag collecting bag are provided at one end of the cross runner, and a riser is connected to the ingrowth position.
[0005] In a preferred embodiment, the number of the ingates and risers is set to two groups, the ingates and risers are arranged in one-to-one correspondence, and the assemblies of the two groups of ingates and risers are symmetrically arranged along the runner.
[0006] In a preferred embodiment, the runner and the branch runner are distributed in a "T" shape, the runner is connected to the inner cavity channel of the branch runner, and the cross-sectional area of the branch runner channel is half of the cross-sectional area of the runner channel.
[0007] In a preferred embodiment, a molding cavity is provided inside the mold plate, a pouring port is provided at the top of the sprue, and the pouring port is connected to the molding cavity through a channel inside the sprue.
[0008] In a preferred embodiment, the channel cross-sectional area ratio of the sprue: runner: ingate is 1:0.8:1.2.
[0009] Technical effects and advantages of the utility model:
[0010] The utility model adopts a stepped channel structure design, so that when the molten metal flows to a position with a height difference, the slag above the molten metal will be blocked, effectively preventing the slag from entering the casting, and the casting yield rate is higher;
[0011] The utility model is conducive to the smooth flow of molten metal by designing the size of each pouring section, and turbulence, air entrainment and the like will not occur. The cross-sectional area ratio of 1:0.8:1.2 is used to control unstable factors in the pouring system. The cross-sectional area ratio of 1:0.8:1.2 can limit the flow rate of molten metal when it enters the cross runner through the sprue, and prevent the molten metal from splashing due to excessive filling. Subsequently, the pressure is released when the molten metal enters the ingrown from the cross runner, and the molten metal tends to be stable when entering the riser. In addition, the flat inclined ingrown can block slag over a large area. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0013] Figure 2 It is a top view of the utility model.
[0014] Figure 3 For the utility model Figure 2 Cross-section view along AA direction.
[0015] Figure 4 For the utility model Figure 2 Cross-section along BB direction.
[0016] Figure 5 It is a bottom view of the utility model.
[0017] Figure 6 For the utility model Figure 5 Cross-section view along CC direction.
[0018] The reference numerals in the accompanying drawings are: 1 type plate, 2 straight runner, 3 cross runner, 4 branch cross runner, 5 ingrate, 6 riser, 7 exhaust needle, 8 casting shape limiter, 9 filter block, 10 slag bag. Implementation
[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0020] The utility model provides Figure 1-6 An optimized structure of an electro-hydraulic valve casting system shown in the figure comprises a mold plate 1, wherein the mold plate 1 comprises upper and lower detachable split plates, a pouring channel and a casting outer shape stopper 8 arranged on the bottom surface of the mold plate 1 are installed between the upper and lower split plates, the pouring channel is composed of a straight runner 2, a horizontal runner 3, a filter block 9 and an ingode 5, and the straight runner 2, the horizontal runner 3, the filter block 9 and the ingode 5 are interconnected, and branch horizontal runners 4 are arranged between the two sides of the horizontal runner 3 and the ingode 5, and the branch horizontal runners 4 are used as metal liquid diversion, a slag collecting bag 10 and an exhaust needle 7 arranged on the top of the slag collecting bag 10 are arranged at one end of the horizontal runner 3, and a riser 6 is connected to the ingode 5;
[0021] The number of the ingates 5 and the risers 6 are both set to two groups, the ingates 5 and the risers 6 are set one by one, and the assemblies of the two groups of ingates 5 and the risers 6 are symmetrically arranged along the runner 3;
[0022] The runner 3 and the branch runner 4 are distributed in a "T" shape, the runner 3 is connected to the inner cavity channel of the branch runner 4, and the channel cross-sectional area of the branch runner 4 is half of the channel cross-sectional area of the runner 3; the channel cross-sectional area ratio of the straight runner 2: the runner 3: the inner runner 5 is 1:0.8:1.2;
[0023] A molding cavity is provided inside the mold plate 1 , a pouring port is provided at the top of the sprue 2 , and the pouring port is connected to the molding cavity through a channel inside the sprue 2 .
[0024] like Figure 1-6 As shown, the specific implementation method is:
[0025] The sprue 2, runner 3, branch runner 4 and ingode 5 are fixed on the mold plate. The molten metal first passes through the sprue 2, and the cross-sectional area of the sprue 2 is 9.6 cm²; then through the runner 3, and the cross-sectional area of the runner 3 is 7.68 cm²; then through the branch runner 4, because there are two branch runners 4, the cross-sectional area of the branch runner 4 is half of the cross-sectional area of the runner 3, and the cross-sectional area of the branch runner 4 is 3.84 cm²; finally, the molten metal enters the riser 6 from the ingode 5, and the cross-sectional area of the ingode is 5.76 cm²; because the ingates 5 also have two parts, the cross-sectional areas of the two ingates 5 need to be added together when calculating the total cross-sectional area of the ingates 5, so the cross-sectional area of the ingates 5 is 11.52cm²; when calculating the cross-sectional area ratio of each casting section, the runner 3 and the branch runner 4 are counted as one part, so the total cross-sectional area of the branch runner 4 and the cross-sectional area of the runner 3 are guaranteed to be the same; it can be concluded that the ratio of the straight runner 2: the runner 3: the ingates 5 is 1:0.8:1.2, which is in line with the expectations of the casting system optimization method;
[0026] Further: the various components of the pouring channel are interconnected. First, a complete set of mold plates is designed, and the dimensions of the pouring system of each part are calculated. The pouring process is simulated by computer to observe whether the flow of the molten metal in the mold cavity meets the original design intention. After confirmation, the required parts are processed by a processing machine tool. The processed pouring system meets the design requirements, and the various parts are assembled and fixed on the upper and lower surfaces of the mold plate 1;
[0027] The assembled template 1 is transported to the site and assembled on the molding machine, and the cavity is squeezed out using green sand, and the various parts in the cavity are connected;
[0028] The melted molten metal is metallographically poured from the pouring port of the sprue 2. The molten metal first passes through the sprue 2 and then flows into the filter block 9 for the first filtration. The molten metal that passes through the filter block 9 then flows into the runner 3. Since the ratio of the cross-sectional area of the sprue 2 to the cross-sectional area of the runner 3 is 1:0.8, the molten metal will slow down when entering the runner 3, so that the filter block 9 in the previous step can carefully filter the waste slag in the molten iron.
[0029] As is known to all, the molten iron at the front end of the molten metal is most likely to produce oxidized slag, so the front end molten metal needs to be drained. Therefore, when the molten metal passes through the runner 3, it will first flow into the slag collecting bag 10 and the exhaust needle 7. The slag collecting bag 10 and the exhaust needle 7 will collect and store the slag in the molten metal at this position;
[0030] The molten metal then passes through the runner 3 into the branch runner 4 to prepare to pass through the ingrate 5. From the principle of physics, we know that the smaller the cross-sectional area, the greater the pressure of the molten metal when passing through. Therefore, the molten metal needs to be depressurized when entering the ingrate 5 from the branch runner 4. Therefore, the cross-sectional area ratio of the straight runner 2 and the ingrate 5 is designed to be 1:1.2. The molten metal can effectively achieve the hydraulic effect, making the molten metal flow more smoothly, thereby reducing waste such as slag, gas, cold shut, etc. inside the casting.
[0031] Working principle of this utility model:
[0032] Optimize the structure of the electro-hydraulic valve casting gating system. The gating system uses a multi-stage layered structure, intercepts the flow at the junction of the cross runner 3 and the inner runner 5, and effectively uses the height difference of each casting section to "trap" the impurities floating in the molten iron, so that the "clean" molten iron acts on the electro-hydraulic valve casting, and the molten iron with impurities is retained in the gating system;
[0033] Optimize the size ratio of the electro-hydraulic valve casting gating system. The cross-sectional area ratio of the sprue, runner and ingates in the gating system is 1:0.8:1.2, which ensures smooth and uniform flow of molten metal. The appropriate size of the gating system will also avoid defects such as poor flow of molten metal, cold shut, shrinkage cavity, etc., and avoid unnecessary metal waste and low production efficiency.
[0034] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;
[0035] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;
[0036] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.
Claims
1. An optimized structure of a casting system for an electro-hydraulic valve, comprising a mold plate (1), characterized in that: The mold plate (1) comprises upper and lower detachable split plates, a pouring channel and a casting outer shape stopper (8) arranged on the bottom surface of the mold plate (1) are installed between the upper and lower split plates, the pouring channel is composed of a straight runner (2), a cross runner (3), a filter block (9) and an ingode (5), and the straight runner (2), the cross runner (3), the filter block (9) and the ingode (5) are interconnected, and branch cross runners (4) are arranged between the two sides of the cross runner (3) and the ingode (5), a slag collecting bag (10) and an exhaust needle (7) arranged on the top of the slag collecting bag (10) are arranged at one end of the cross runner (3), and a riser (6) is connected to the ingode (5).
2. The optimized structure of the electro-hydraulic valve casting system according to claim 1 is characterized in that: The number of the ingates (5) and risers (6) is set to two groups, the ingates (5) and risers (6) are arranged in one-to-one correspondence, and the two groups of ingates (5) and risers (6) are symmetrically arranged along the runner (3).
3. The optimized structure of the electro-hydraulic valve casting system according to claim 1 is characterized in that: The runner (3) and the branch runner (4) are arranged in a "T" shape, the runner (3) and the branch runner (4) are connected to each other through inner cavity channels, and the cross-sectional area of the branch runner (4) is half of the cross-sectional area of the runner (3).
4. The optimized structure of the electro-hydraulic valve casting system according to claim 1 is characterized in that: A molding cavity is provided inside the mold plate (1), a pouring port is provided at the top of the sprue (2), and the pouring port is connected to the molding cavity through a channel inside the sprue (2).
5. The optimized structure of the electro-hydraulic valve casting system according to claim 1 is characterized in that: The channel cross-sectional area ratio of the straight runner (2): the horizontal runner (3): the inner runner (5) is 1:0.8:1.2.