KR100900250B1 - Optimal Squeeze Method Design System and Method - Google Patents

Abstract

The present invention discloses a system and method for designing an optimal pouring method. The present invention includes an input unit for receiving a design value of the structure and the adequacy determination factor of the designed system; A mold simulation unit for manufacturing a virtual mold to which the design value is applied; A casting simulation unit for manufacturing a virtual casting by injecting a virtual molten metal into the virtual mold; It characterized in that it comprises an analysis unit for verifying the design value in the virtual casting process using the appropriateness determination factor.

In the present invention, the optimal flow metering method is designed by setting the average flow rate, the maximum melt time, the maximum free surface collision number, and the maximum vortex count as the design adequacy determinants when designing the tap system through computer simulation. Do it.

Tangu Type, Casting, Mold, Ingate, Sprue, Runner

Description

System for Design of Optimum Sprue Method and Method

The present invention relates to a system and method for designing an optimal tapping method, and in particular, the average flow rate, the maximum melt time, the maximum free surface collision number, and the maximum vortex count measured for each taping system when designing the taping system through computer numerical simulation. The present invention relates to a system and method for designing an optimal pouring method for determining design adequacy determination factors.

Casting technology is a technique of making a casting of a desired shape by making a mold of the desired shape, dissolving a metal in a solid state having a large deformation resistance in a liquid state with a low deformation resistance and injecting it into the mold and then solidifying. Casting technology is one of the oldest manufacturing methods that have been used since the discovery of metals, and has the advantage of being able to easily manufacture parts with extremely complex shapes.

Casting technology has various types such as gravity casting, low pressure casting and high pressure casting, and has been growing in response to the demands of the present time with the introduction of production facilities for active productivity improvement.

There are various types of casting technologies such as gravity casting, low pressure casting and high pressure casting, and they have grown in response to the demands of the present time with the introduction of production facilities for aggressive productivity improvement.

When designing the casting method, the conditions such as molten metal, layout, casting condition, design of the ball system, mold cooling condition, insert mold, extruder relationship, and core relationship should be considered. The degree, position, and shape of defects that occur also vary.

Therefore, in order to manufacture a high quality casting, it is necessary to control casting defects while appropriately setting or changing upper conditions. However, it is very time-consuming and economical to verify, modify and supplement the actual molds manufactured by controlling the upper conditions in the field.

Therefore, it is common to derive an optimal mold and casting design method by numerically analyzing a process of manufacturing a virtual casting in a virtual mold by applying the above conditions through a simulation program.

Therefore, in order to manufacture a high quality casting, it is necessary to control casting defects while appropriately setting or changing upper conditions.

1 is a structural diagram showing a mold according to the prior art. As shown in Figure 1, the mold is sprue (110) which is an injection hole of the molten metal close to the melting cup (Pouring Cup), the inner mold 140, the sprue 110 to form a cast form ) Is connected to the inner mold 140 and a predetermined interval outside the runner 120 is a distribution path configured to surround the inner mold 140, the melt flows in the runner 120 within the predetermined time within the mold 140 Inlet 130 as a connection passage between the runner 120 and the inner mold 140 to be introduced in a batch), vent 150 which is the outlet of the gas present in the inner mold 140 before the molten metal is included. .

Sprue 110 is an inlet for injecting molten metal from the crucible containing the molten metal, it is preferable to be located close to the crucible (Pouring Cup) containing the molten metal.

The inner mold 140 includes the inner space corresponding to the cast form to form a cast form.

The runner 120 is an inflow path of the molten metal which is connected to the sprue 110 and spaced apart from the internal mold 140 by a predetermined distance, and the molten metal flows into the internal mold 140 through the ingate 130 at once. Preferably, it is preferably composed of a passageway wider than the ingate 130.

The ingate 130 is a path of the molten metal from the plurality of runners 120 to the inner mold 140, and preferably includes a passage having a diameter smaller than that of the runner 120.

Vent 150 is a path for discharging the gas present in the inner mold 140 to the outside before the inner mold 140 is filled due to the melt.

Here, among the components of the mold, sprue 110, runner 120, and ingate 130 are collectively called a tanggu system, and the proper design of the tanggu system can minimize the defective rate of the casting due to the flow of the molten metal. That is a very important task.

However, in the related art, there is a problem that a numerical analysis factor for determining whether the design is appropriate in the casting manufacturing process is not determined according to the design structure of the ball system during the mold design.

In the present invention, the optimal flow metering method is set by determining the average flow rate, maximum melt time, maximum free surface collision number and maximum vortex count as design adequacy determinants when designing the ball system through computer numerical simulation. Its purpose is to provide a design system and method.

In order to achieve the above object, an optimal design method for a tapping method according to the present invention comprises: an input unit for receiving a design value of a taping system structure and an appropriateness determining factor of a designed taping system; A mold simulation unit for manufacturing a virtual mold to which the design value is applied; A casting simulation unit for manufacturing a virtual casting by injecting a virtual molten metal into the virtual mold; And an analysis unit for verifying the design value in the virtual casting process by using the adequacy determination factor.

According to another aspect of the invention (a) receiving a user setting related to the design of the ball system; (b) manufacturing a virtual mold to which a pouring system designed according to the input is applied; (c) setting an adequacy determining factor of the design of the ball mouth system including the average flow rate, the melt arrival time, the free surface collision number and the vortex water; (d) injecting virtual melt into the virtual mold and simulating a casting process; (e) A method for designing an optimal billing method, which is characterized in that it comprises the step of determining the appropriateness of the designed billing system by analyzing the numerical value for the determination factor derived through the casting process simulation.

The optimum system for designing the tapping method according to the present invention is the appropriateness of designing the average flow rate, the maximum melt time, the maximum free surface collision number and the maximum vortex count measured for each taping system during the design of the taping system through computer simulation. By setting it as a determination factor, there is an effect that the optimal pouring method can be designed.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following embodiments are provided to those skilled in the art to fully understand the present invention, can be modified in various forms, the scope of the present invention is limited to the embodiments described below no.

2 is a block diagram showing a system for designing an optimal pouring method according to an embodiment of the present invention. As shown in FIG. 2, an optimal design method for a ball game system includes: an input unit 210 for receiving a design value of a ball game system structure and an appropriateness determination factor of the designed game system; A mold simulation unit 220 for manufacturing a virtual mold to which the design value is applied; A casting simulation unit 230 for manufacturing a virtual casting by injecting a virtual molten metal into the virtual mold; An analysis unit 240 for verifying the design value in the virtual casting process using the appropriateness determination factor.

The input unit 210 is a user interface of a simulation program provided by the optimum design method of the ball game system, and receives a user setting related to the design value of the structure of the ball system using a keyboard, a mouse, and the like, and a suitability determination factor of the designed system.

Here, the design value of the ball-type structure is a structure-related numerical value including the shape, dimension, position and number of each of the sprue 110, the runner 120 and the ingate 130, the adequacy determination factor is the average flow rate, the maximum It may be a numerical value related to the melt flow, including melt arrival time, free surface impact water, and vortex water.

The mold simulation unit 220 performs a simulation of fabricating a virtual mold from the set value of the set ball-type structure.

The casting simulation unit 230 simulates a process of injecting the virtual melt into the virtual mold so that the analysis unit 240 may analyze the numerical values related to the casting process and the appropriateness determination factor.

The analysis unit 240 analyzes the numerical value of the predetermined rule derived from the casting process and the appropriateness determination factor in the simulation process to verify the suitability of the design value or to present a criterion of verification.

Here, the analysis unit 240 determines that the design of the mouthpiece is more appropriate as the average flow rate is larger, the maximum capacity reaching time is smaller, the number of free surface impulses is smaller, and the number of vortices is smaller.

In addition, the optimal pouring system design system further includes a storage unit 260 and the result display unit 250, and stores the results verified by the analysis unit 240 through the storage unit 260, the result display unit 250 ), The saved results can be expressed in the form of charts, graphs or documents so that users can easily interpret the simulation results.

3 is a flowchart illustrating a method for designing an optimal pouring method according to an embodiment of the present invention. A description with reference to FIG. 3 is as follows.

First, a user setting related to a design of a mouth ball is received through setting of a variable including a shape, a dimension, a position, and a number (S310).

Subsequently, the process of manufacturing a virtual mold by applying a pouring system designed according to a setting is simulated (S320).

In order to determine the adequacy of the designed hot water meter, an appropriateness determination factor including an average flow rate, a molten metal arrival time, a free surface collision number, and a vortex number is set (S330).

Here, the larger the average flow rate, the smaller the maximum capacity arrival time, the fewer free surface collisions, and the less vortex number, the better the designed ball system.

In this case, it is preferable that the appropriateness is judged as a relative comparison result with respect to the previously designed mold.

Next, a virtual molten metal is injected into the virtual mold, and a casting process is simulated (S340).

Then, the numerical value for the adequacy determination factor derived through the casting process simulation is analyzed (S350).

Here, it is preferable to store the results of the numerical analysis and then refer to the results obtained through the numerical analysis in the future when determining the optimal design value through comparison.

Subsequently, if the analyzed value is equal to or greater than a predetermined reference value (S360), the pouring system designed when the actual mold is manufactured is applied (S370).

On the other hand, if the analyzed value is equal to or less than the predetermined reference value (S360), the pouring apparatus is redesigned (S310).

In this case, it is preferable to use a numerical value for a ball meter, which has been verified through a design and manufacture before the predetermined reference value.

The configuration of the present invention has been described above through the preferred embodiments and the accompanying drawings. However, these are only examples and are not used to limit the scope of the present invention. Those skilled in the art will understand from this that various modifications and equivalent other embodiments are possible. The true scope of protection of the present invention should be defined by the technical spirit of the appended claims.

1 is a structural diagram showing a mold according to the prior art

Figure 2 is a block diagram showing a system for designing an optimal pouring ball according to the present invention.

Figure 3 is a flow chart illustrating a method for designing an optimal pouring ball according to the present invention.

Claims (11)

An input unit configured to receive a design value of a banging system structure and an appropriateness determination factor of the designed banging system; A mold simulation unit for manufacturing a virtual mold to which the design value is applied; A casting simulation unit for manufacturing a virtual casting by injecting a virtual molten metal into the virtual mold; An analysis unit which verifies the design value during the virtual casting process using the adequacy determination factor; Optimal pouring method design system comprising a. The method of claim 1, A storage unit which stores the verification result of the analysis unit; A result display unit for displaying the stored result in the form of a chart, a graph, a document; Optimal pouring method design system characterized in that it further comprises. The method of claim 1, wherein the design value, Shape, dimension, position and number of sprues, runners and ingates respectively Optimal pouring method design system, characterized in that the structure-related numerical value including a. The method of claim 1, wherein the adequacy determining factor, Average flow, maximum melt time, free surface impingement and vortex flow Optimal pouring method design system, characterized in that the melt flow-related numerical value including a. The method of claim 4, wherein the adequacy determining factor is And the larger the average flow rate, the smaller the maximum capacity arrival time, the less the number of free surface collisions, and the less the number of vortices, the more the design of the mouthpiece system is. (a) receiving a user setting related to the design of the mouth ball system; (b) manufacturing a virtual mold to which a pouring system designed according to the input is applied; (c) setting an adequacy determining factor of the design of the ball mouth system including the average flow rate, the melt arrival time, the free surface collision number and the vortex water; (d) injecting virtual melt into the virtual mold and simulating a casting process; (e) determining the adequacy of the designed ball system by analyzing the numerical values of the judgment factors derived through the casting process simulation. Optimal pouring method design method comprising a. The method of claim 6, wherein the setting related to the design of the pouring apparatus in the step (a) is performed. A method for designing an optimal pouring method, characterized in that it is by setting a variable including the shape, dimensions, position and number of the pouring system. The method of claim 6, wherein step (e) (e-1) if the determination result is appropriate, applying the designed pouring system at the time of manufacturing the actual mold; (e-2) if the result of the determination is not appropriate, return to step (a) to redesign the mouth ball system; Optimal pouring method design method comprising a. The method of claim 6, wherein step (e) Determining an optimal design value by comparing the determination result obtained by one or more processes; Optimal pouring method design method comprising a. The method of claim 6, wherein step (e) A method of designing an optimal billing method, characterized in that it is judged by comparing with a numerical value of a factor for determining suitability of the design of a ball system derived from applying a ball system, which has been previously proven in design and manufacture. The method of claim 6, wherein the step (c) is the suitability determination factor, And the larger the average flow rate, the smaller the maximum capacity arrival time, the less the number of free surface collisions, and the less the number of vortices.

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