KR20030024304A - Manufacturing apparatus of metal slurry for casting - Google Patents

Abstract

PURPOSE: An apparatus for manufacturing metal slurry for casting is provided which removes a facility used in the reheating process to reduce manufacturing expense and cost, enable easy process management and solve the phenomenon that liquid phase generated in the reheating process is closed inside the solid phase. CONSTITUTION: The apparatus for manufacturing metal slurry for casting comprises a ladle unit(10) comprising a certain control means(12) for controlling supply rate and amount of molten metal(1) so that required amount of molten metal(1) only is dropped onto the cooling inclined plate(22); an inclined plate unit comprising a cooling inclined plate(22) which is slantly arranged in a certain angle so that the molten metal(1) in the slurry(3) state is flown down to an injecting sleeve(40) of die-casting machine after making the molten metal(1) into the slurry(3) state by cooling a controlled amount of molten metal(1) supplied from the ladle unit(10), the lower side of which is connected to an entrance of the injecting sleeve(40), and in which a cooling pipe(26) is installed, and a support means for supporting the cooling inclined plate(22); and an oscillation generating unit(30) for oscillating the cooling inclined plate(22) through an oscillator(32) by generating oscillation.

Description

Manufacturing apparatus of metal slurry for casting

The present invention relates to an apparatus for producing a metal slurry for casting, and more particularly, to a casting process for forming a product using a semi-fused metal material, a casting metal for making a slurry metal material in which a solid phase and a liquid are mixed from molten metal. The present invention relates to a slurry manufacturing apparatus, and to an apparatus for producing a metal slurry for casting, which is capable of supplying an ideally shaped moldable slurry material and directly supplying it to a die casting machine without reheating.

In general, the molding process of a product using a semi-melt (reactive solid) metal material is a high-pressure injection of a metal material in a slurry state of a mixture of solid and liquid phases into a cavity, which is a product shape inside a mold, to form a product. This is advantageous in that shrinkage occurs during solidification as compared with a conventional die casting casting method in which a liquid material is injected at a high pressure and filled into a cavity.

In addition, since the viscosity is higher due to the mixing of the solid phase compared to the molten state of the liquid state, when filling in the cavity of the mold, it can exhibit the laminar flow filling characteristics without being scattered, thereby minimizing the mixing of air, etc. This allows the molded article to have high mechanical properties.

The molding process of the product using the metal material in the slurry state is large, the material manufacturing process of making the spherical structure instead of the normal dendritic structure using the magnetic field stirring after melting the material, and round rod billet spherical to the required size After cutting, it can be roughly divided into a reheating process of rapidly, uniformly and reheating a slug-type material, and a process of molding a product by injecting it at a high pressure into a mold.

However, in the molding process as described above, it is difficult to control the process because it must go through a two-step process of melting the material into a molten metal and then spheroidizing it and reheating the spheroidized material into a moldable spheroidized material. In other words, the equipment for the two processes should be configured separately, and eventually there is a problem of increasing the manufacturing cost and cost.

In addition, since the spheroidized material is reheated again, a phenomenon in which the liquid phase, which is a process structure, is trapped in the solid phase is generated in the process of merging the spheroidized tissue.

In other words, the metal slurry structure that has not undergone the reheating process does not trap the process liquid in the spherical solid phase, but the slurry liquid that has undergone the reheating process becomes trapped in the initial solid phase while the primary solid phase is coalesced. Since it causes a decrease in the mechanical properties of the finished product, a countermeasure is required.

Therefore, the present invention has been invented to solve the above problems, it is possible to reduce the manufacturing cost and cost by eliminating the equipment in the reheating process, process management can be facilitated, the liquid phase generated in the reheating process in the solid phase It is an object of the present invention to provide an apparatus for producing a metal slurry for casting that can eliminate the trapping phenomenon.

1 is a device configuration schematically showing the configuration of the apparatus for producing a metal slurry for casting according to the present invention.

<Explanation of symbols for the main parts of the drawings>

1: molten metal 3: slurry

10 ladle device 20 inclined plate device

22: inclined plate for cooling 24: inclined plate support means

26: cooling pipe 28: cooling water supply line

29 flow rate control means 30 vibration generating device

32: vibrator 40: injection sleeve

50: air jet device

Hereinafter, the present invention will be described with reference to the accompanying drawings.

The present invention for achieving the above object is provided with a predetermined control means for adjusting the supply speed and the amount of the molten metal (1) so that only the required amount of molten metal (1) flows to the cooling inclined plate (22) A ladle device 10; It receives the adjusted amount of molten metal 1 from the ladle apparatus 10, cools it to make a slurry 3 state, and inclines at a predetermined angle so that it can flow to the injection sleeve 40 of the die casting machine. An inclined plate apparatus having a lower side connected to the inlet of the injection sleeve 40 and including a cooling inclined plate 22 having a cooling pipe 26 therein, and supporting means 24 for supporting the cooling inclined plate 22. 20; It characterized in that it comprises a; vibration generating device 30 for generating a vibration to vibrate the cooling inclined plate 22 through the vibrator (32).

In a preferred embodiment of the present invention, the flow rate of the cooling water flowing through the cooling pipe 26 is controlled by the flow rate control means 29 installed on the cooling water supply line 28.

In addition, the cooling inclined plate 22 is characterized in that it is made of any one of copper and graphite for the cooling performance.

In addition, the cooling inclination plate 22 is characterized in that the release agent is coated so that the slurry does not adhere well to the upper surface through which the slurry flows.

In particular, the release agent is characterized in that the boron nitride (boronitride).

In addition, after the prepared slurry 3 is injected into the injection sleeve 40, high pressure air is injected to remove and remove the metal material remaining on the cooling inclined plate 22, so that the high pressure air supply means ( It is characterized in that it further comprises an air spraying device (50) capable of injecting the high pressure air supplied from 52 to the upper surface of the cooling inclination plate (22).

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is a schematic view showing the configuration of the apparatus for producing a metal slurry for casting according to the present invention.

The present invention relates to an apparatus for producing a metal slurry for casting for making a metal material in a solid state and a liquid state from a molten metal (hereinafter, referred to as molten metal) for a molding process of a product using a semi-melt metal material. The present invention relates to an apparatus for producing a metal slurry for casting, which is capable of supplying a die-cast material that is ideally spherical in form and can be directly supplied to a die casting machine without reheating.

To this end, the present invention is a ladle device (10) for supplying the molten metal 1, and the cooling inclination plate (22) in which the cooling pipe (26) is built in the molten metal (1) supplied from the ladle device (10) A) the inclined plate apparatus 20 for cooling the slant plate 22 through the vibrator 32 by generating an oscillator 32 and a vibrating plate 32 to make the slurry cool. It is made, including.

Here, the ladle device 10 is provided with a predetermined control means 12 for adjusting the supply speed and the amount of the molten metal 1 so that only the required molten metal 1 flows to the cooling inclined plate 22. .

Here, as an embodiment of the control means 12, it may be implemented as an opening and closing means is installed on the outlet from which the molten metal flows out from the ladle device 10 and the opening and closing amount is adjusted in accordance with the electrical signal of the controller (14).

In addition, the inclined plate device 20 is inclined at a predetermined angle so as to receive a controlled amount of molten metal 1 supplied from the ladle device 10 and flow to the injection sleeve 40 of the die casting machine, and the lower side thereof. And a cooling inclination plate 22 connected to the inlet of the injection sleeve 40 and support means 24 for supporting the cooling inclination plate 22.

Here, the cooling inclination plate 22 has a cooling pipe 26 in which cooling water is circulated, and the flow rate of the cooling water flowing through the cooling pipe 26 is controlled by the flow control means 29. have.

Here, the flow rate control means 29 may be implemented as an opening and closing means that is installed on the cooling water supply line 28 for supplying the cooling water to the cooling pipe 26 and the opening and closing amount is adjusted in accordance with the electrical signal of the controller 14. have.

The cooling inclination plate 22 is a preferred embodiment. In the case of manufacturing an aluminum slurry, an aluminum slurry is formed on the upper surface of the aluminum slurry to be made of copper or graphite having high thermal conductivity to improve cooling performance. Release agent such as boronitride is coated to prevent sticking.

In addition, the inclined plate support means 24 is supported by the vibrator 32 of the vibration generating device 30 disposed below, and transmits the vibration transmitted from the vibrator 32 to the cooling inclined plate 22.

The vibration generating device 30 generates a vibration of about 10 ~ 200 Hz, and includes a vibrator 32 for transmitting the generated vibration to the inclined plate device (20).

In a preferred embodiment of the present invention, the upper side of the cooling inclined plate 22, the air injection capable of injecting the high pressure air supplied from the high-pressure air supply means 52 to the upper surface of the cooling inclined plate 22 through the nozzle outlet The device 50 is installed.

The air injector 50 is installed so that the nozzle outlet faces the upper surface of the cooling inclined plate 22. After the completion of the injection of the slurry 3 in the reaction sleeve 40, the inclined plate is sprayed with high pressure air. The metal material remaining in (22) is separated and removed from the inclined plate (22).

Hereinafter, referring to the operating state of the present invention, the vibration generated by the vibration generating device 30 is transmitted to the cooling inclination plate 22 through the vibrator 32 and the inclined plate support means 24, and the cooling pipe 26 In the state in which the coolant is circulated at a controlled flow rate within the flow path, when the amount of the molten metal 1 adjusted to the upper surface of the cooling inclined plate 22 is supplied from the ladle device 10 and flows, the molten metal 1 is cooled. As the inclined plate 22 flows, it spheroidizes without growing into a resinous phase during solidification.

At this time, the slurry 3 is less agglomerated by vibration of the inclined plate 22 for cooling, and the spheroidizing effect is further promoted.

In this way, when an appropriate amount of metal slurry is accumulated in the injection sleeve of the die casting machine, the die casting machine is operated to inject the slurry into a mold at a high pressure, thereby forming a product.

As described above, by providing a casting metal slurry manufacturing apparatus for producing a moldable slurry material without a reheating process and directly supplying the die casting machine, the molding process of the product using the reaction solid metal material can be simplified, The elimination of equipment for the reheating process and the provision of a simple device can reduce manufacturing costs and costs.

In addition, since the spherical metal slurry produced from the molten metal is directly injection molded, it is easier to manage the process and the production speed can be shorter than that of the conventional slurry production, which is divided into a material manufacturing process for forming a spherical structure and a reheating process for reheating. It can be effective.

In addition, the phenomenon in which the liquid phase generated in the recrystallization process is not trapped in the solid phase does not occur so that the mechanical properties of the molded product are not deteriorated.

Claims (6)

A ladle device (10) provided with predetermined control means (12) for adjusting the supply speed and the amount of the molten metal (1) so that only the molten quantity (1) of the required amount flows to the cooling inclined plate (22); It receives the adjusted amount of molten metal 1 from the ladle apparatus 10, cools it to make a slurry 3 state, and inclines at a predetermined angle so that it can flow to the injection sleeve 40 of the die casting machine. An inclined plate apparatus having a lower side connected to the inlet of the injection sleeve 40 and including a cooling inclined plate 22 having a cooling pipe 26 therein, and supporting means 24 for supporting the cooling inclined plate 22. 20; Vibration generating device 30 for generating a vibration to vibrate the cooling inclined plate 22 through the vibrator (32); Metal slurry manufacturing apparatus for casting, characterized in that it comprises a. 2. The apparatus for producing a metal slurry for casting according to claim 1, wherein the flow rate of the cooling water flowing through the cooling pipe 26 is controlled by a flow rate control means 29 installed on the cooling water supply line 28. . The apparatus of claim 1, wherein the cooling inclination plate is made of one of copper and graphite for cooling performance. The apparatus of claim 1, wherein the cooling inclination plate (22) is coated with a releasing agent so that the slurry does not adhere well to the upper surface through which the slurry flows. The apparatus of claim 3, wherein the release agent is boron nitride. The method of claim 1, wherein the prepared slurry (3) is injected into the injection sleeve 40, the high pressure air is blown to separate and remove the metal material remaining on the cooling inclined plate (22). The apparatus for producing a metal slurry for casting, characterized in that it further comprises an air spraying device (50) capable of spraying the high pressure air supplied from the air supply means (52) to the upper surface of the cooling inclined plate (22).