KR20160078719A - Apparatus for manufacturing magnesium alloy - Google Patents

Abstract

A method for producing a magnesium alloy using various additive elements and a method for magnesium alloying in which a magnesium melt is accommodated and magnesium alloy is formed so that an element dissolved at a high temperature can be added in a liquid phase, And an input portion for inputting a molten alloy of the molten alloy dissolved in the alloy melting furnace into the alloying furnace. The present invention also provides an apparatus for producing a magnesium alloy.

Description

[0001] APPARATUS FOR MANUFACTURING MAGNESIUM ALLOY [0002]

An apparatus for manufacturing a magnesium alloy is disclosed.

In general, magnesium or a magnesium alloy (hereinafter referred to as a magnesium alloy) is the lightest metal among practical metals, and is expected as a lightweight structural material because of its excellent non-rigidity and non-rigidity. It is also expected to be a substitute for resin-based materials. In recent years, there has been an increasing demand for magnesium alloys that can be lightweight among commercial metals as weight reduction is demanded in transportation equipment and the like.

In order to manufacture such a magnesium alloy, an alloy element is charged into a magnesium melt contained in a mild steel crucible as an alloy, and a desired composition is set and dissolved. Then, the alloy element is uniformly distributed in the magnesium melt through the stirring process and the like to produce a high-temperature magnesium alloy solution, that is, the magnesium melt.

In order to dissolve the alloy to be added to the magnesium molten metal, it is necessary to maintain a high temperature. However, due to the low vaporization point of magnesium, alloys that dissolve at high temperatures can not be added directly to the magnesium melt.

Thus, conventionally, a method has been used in which an alloy is added to an element dissolving at a low temperature such as magnesium or aluminum to prepare a parent alloy, and the mother alloy is put into a magnesium melt.

However, such a conventional structure is difficult to manufacture a magnesium alloy in accordance with a desired composition even if a mother alloy is used, and there is a limit to the manufacture of various alloys using magnesium because the alloy contains only a low concentration in the parent alloy.

A magnesium alloy manufacturing apparatus capable of manufacturing a magnesium alloy using various additive elements is provided.

The present invention also provides an apparatus for producing a magnesium alloy capable of adding an element dissolved at a high temperature in a liquid phase.

The apparatus of this embodiment is an alloy melting furnace in which molten magnesium is accommodated and magnesium alloying is performed. An alloy melting furnace, which is separately installed in the alloying furnace to dissolve alloy elements, and a molten alloy of molten alloy dissolved in the alloy melting furnace, is introduced into the alloying furnace For example.

The alloy melting furnace may have a structure in which a plurality of alloy melting furnaces are provided to dissolve different alloying elements.

The alloy melting furnace can dissolve a high melting point alloy element having a melting point relatively higher than that of magnesium.

The alloy melting furnace can dissolve an alloy element containing zirconium (Zr).

The charging unit may include a transfer pipe installed between the alloy melting furnace and the alloying furnace to transfer molten alloy of the alloy melting furnace.

The charging unit may further include a pump installed in the alloy melting furnace and supplying the molten alloy to the transfer pipe, and the molten alloy may be transferred through driving of the pump.

The transfer pipe may be provided on the side of the alloy melting furnace and disposed to be inclined downward toward the alloying furnace so that the molten alloy flows to the alloying furnace through the transfer pipe when the molten metal level in the alloy melting furnace rises.

The charging unit may be a structure in which the alloy melting furnace is tilted and the alloy melt is injected into the alloying furnace through the opened upper end of the alloy melting furnace.

As described above, according to this embodiment, it is possible to use an alloy element having a high melting point, so that a magnesium alloy can be manufactured using various alloys.

In addition, since it is not necessary to produce the parent alloy with the alloy element, the process can be shortened and the magnesium alloy can be manufactured more easily.

Further, productivity of the magnesium alloy can be further increased.

1 is a schematic view showing a magnesium alloy manufacturing apparatus according to the present embodiment.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms as used herein include plural forms as long as the phrases do not expressly express the opposite meaning thereto. Means that a particular feature, region, integer, step, operation, element and / or component is specified, and that other specific features, regions, integers, steps, operations, elements, components, and / And the like.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Accordingly, the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Hereinafter, in this embodiment, an apparatus for manufacturing a magnesium alloy will be described as an example. The present invention is not limited thereto and may be applied to various alloys such as aluminum which are dissolved at low temperatures in addition to magnesium.

1 is a schematic view of an apparatus for manufacturing a magnesium alloy according to the present embodiment.

1, an apparatus for manufacturing a magnesium alloy according to an embodiment of the present invention includes an alloying furnace 10 in which a magnesium melt is accommodated and magnesium alloying is performed, and an alloy element M is separately provided in the alloying furnace 10, An alloy melting furnace 20 to be melted and an input portion for inputting a molten alloy of molten alloy dissolved in the alloy melting furnace 20 into the alloying furnace 10.

The alloying furnace 10 melts the magnesium contained therein. As the alloying furnace 10, for example, an electric furnace or an induction heating furnace can be used.

The alloy melting furnace 20 may be disposed above the alloy furnace 10 relatively. The alloy melting furnace 20 melts an alloy element M contained therein to form an alloy melt. The alloy melting furnace 20 may be, for example, an electric furnace or an induction heating furnace.

The alloy melting furnace 20 can be heated to a relatively high temperature as compared with the alloying furnace 10 so as to melt an alloy element having a high melting point. In this embodiment, the alloy melting furnace 20 is heated and held so as to melt an alloy element having a high melting point. Therefore, the alloying element having a high melting point, which is difficult to dissolve at the temperature of the alloying furnace 10, is also dissolved through the alloy melting furnace 20 and can be put into the magnesium melt in the form of a solution.

In the present embodiment, the alloy melting furnace 20 may dissolve an alloy element having a melting point of 1090 캜 or more, which is the boiling point of magnesium, and may dissolve an alloy element having a melting point of 200 캜 or more higher than that of magnesium. For example, the alloy melting furnace 20 can dissolve an alloy element having a high melting point such as zirconium (Zr).

In the present embodiment, only one or a plurality of alloy melting furnaces 20 may be provided. When there are a plurality of alloy melting furnaces 20, different alloying elements may be respectively dissolved through the respective alloy melting furnaces 20 and then introduced into the alloying furnace 10.

As described above, the alloying element 20 is separately melted and charged into the alloying furnace 10, so that the alloying element can be put into a molten magnesium solution of the alloying furnace 10 in a completely molten solution state .

Therefore, an alloy element having a high melting point can be used, and it is not necessary to produce a separate master alloy as an alloy element, and the productivity of the magnesium alloy can be further increased.

The molten alloy molten in the alloy melting furnace 20 is transferred to the alloying furnace 10 through the charging portion and charged into the magnesium molten metal.

As shown in FIG. 1, the charging unit includes a transfer pipe 30 installed between the alloy melting furnace 20 and the alloying furnace 10 to move the molten alloy of the alloy melting furnace 20.

In this embodiment, the charging unit may have a structure in which the molten alloy flows down to the alloy furnace 10 along the transfer pipe 30 when the level of the molten alloy dissolved in the alloy melting furnace 20 becomes equal to or higher than a predetermined height.

For this, the transfer pipe 30 is disposed on the side surface of the alloy melting furnace 20 at a predetermined height from the bottom thereof, and has a structure inclined downward toward the alloy crucible 10. Accordingly, when the level of the molten metal in the alloy melting furnace 20 gradually increases to reach the position of the transfer pipe 30, the molten alloy flows to the alloying furnace 10 through the transfer pipe 30.

By varying the inclination angle of the conveyance pipe 30 or the installation position of the conveyance pipe 30 on the side of the alloy melting furnace 20, the amount of the molten alloy to be conveyed can be varied.

Such a structure is capable of continuously moving the molten alloy to the alloying furnace 10 while continuously dissolving the alloying element in the alloy melting furnace 20, which is useful in the continuous production of the magnesium alloy.

In addition to the above-described structure, the charging unit may be applied with various structures for charging the alloy melt of the alloy melting furnace 20 into the alloy furnace 10.

For example, the charging unit is provided with a pump (not shown) installed in the alloy melting furnace 20 to supply molten metal to the transfer pipe 30 so that the molten alloy of the alloy melting furnace 20 It may be a structure forcibly transferred to the alloying furnace 10.

In another embodiment, the charging unit may be a structure that tilts the alloy furnace 20 and injects the alloy melt into the alloy furnace 10 through the open top of the alloy furnace 20. With such a structure, it is possible to easily introduce the molten alloy into the alloying furnace by simply tilting the alloy melting furnace 20.

In addition to the above-described structure, the introduction part may have a variety of structures such as a structure using a siphon system, and all of the structures that can apply the molten alloy of the alloy melting furnace 20 to the alloying furnace 10 are applicable will be.

(Example)

A magnesium alloy having zirconium (Zr) as an alloy element was manufactured by using the apparatus manufactured according to this embodiment. The zirconium element was dissolved in the alloy melting furnace 20 and added to the alloy furnace 10 containing the magnesium molten metal as a liquid phase.

Table 1 below shows the results of magnesium alloy manufacture according to the above embodiment in comparison with the prior art.

Process condition Comparative Example 1 Comparative Example 2 Example Alloy injection type Zr powder Mg-30Zr alloy Zr melt bath Recovery rate 20% or less Less than 40% More than 80% Dissolution time 2 hours 1 hours 30 minutes

In Comparative Example 1, magnesium alloy was prepared according to the prior art. In Comparative Example 1, zirconium powder was charged into magnesium melt to prepare a magnesium alloy. In Comparative Example 2, a mother alloy of Mg-30Zr was prepared, Magnesium alloy to produce a magnesium alloy. The recovery rate is the ratio of recovered zirconium produced from magnesium alloy, and as the ratio is lowered, it can not be made of magnesium alloy, but it is separated and precipitated from magnesium melt. The dissolution time represents the time taken for the raw metal to dissolve.

As shown in Table 1, in the case of the present embodiment, the magnesium alloy can be manufactured at a much higher recovery rate than that of the comparative example by separately dissolving the alloy element and injecting it into the magnesium melt in the form of a solution. In addition, the time required for dissolution can be shortened to half or less than that of the comparative example, and the productivity of the magnesium alloy can be increased.

While the illustrative embodiments of the present invention have been shown and described, various modifications and alternative embodiments may be made by those skilled in the art. Such variations and other embodiments will be considered and included in the appended claims, all without departing from the true spirit and scope of the invention.

10: Alloying furnace 20: Alloy melting furnace
30: Transfer pipe

Claims (8)

As the alloying in which the magnesium molten metal is accommodated and magnesium alloying is carried out,
An alloy melting furnace separately installed in the alloying furnace to dissolve the alloy element, and
A molten alloy molten metal dissolved in the alloy melting furnace is introduced into the alloying furnace,
Wherein the magnesium alloy is a magnesium alloy. The method according to claim 1,
Wherein a plurality of alloy melting furnaces are provided to dissolve different alloying elements. The method according to claim 1,
Wherein the alloy melting furnace dissolves a high melting point alloy element having a melting point relatively higher than that of magnesium. The method according to claim 1,
Wherein the alloy melting furnace dissolves an alloy element containing zirconium (Zr). 5. The method according to any one of claims 1 to 4,
Wherein the charging unit includes a transfer pipe installed between the alloy melting furnace and the alloying furnace to transfer molten alloy of the alloy melting furnace. 6. The method of claim 5,
Wherein the charging unit further comprises a pump installed in the alloy melting furnace and supplying the molten alloy to the transferring pipe. 6. The method of claim 5,
Wherein the transfer pipe is disposed on the side of the alloy melting furnace and is inclined downward toward the alloying furnace so that the molten alloy flows through the transfer pipe to move to the alloying furnace when the molten metal level in the alloy melting furnace rises. 6. The method of claim 5,
Wherein the charging unit tilts the alloy melting furnace and injects the alloy melt into the alloying furnace through the opened upper end of the alloy melting furnace.

Images