JPS6146367A - Device for distributing molten metal - Google Patents

Abstract

PURPOSE:To provide a titled device which eliminates conveying means, oxidation and temp. drop of a molten metal by feeding the molten metal in a melting furnace through a pressure-feed tank to each machine-side furnace from a horizontal airtight conduit for distributing the molten metal, filling an inert gas in the conduit and providing heating means thereto if necessary. CONSTITUTION:The molten metal in the melting furnace A is fed through the pressure-feed tank E to each machine-side furnace C of a die casting machine B from the horizontal airtight conduit D for distributing the molten metal. The inside of the conduit D is filled with the inert gas to prevent the oxidation of the molten metal (m). If necessary, the heating means such as heater wires 6 are provided in the conduit to prevent the temp. drop of the molten metal. The molten metal (m) of an equal temp. is fed to each furnace C and satisfactory die casting is executed.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a metal distribution device for distributing molten metal produced in a melting furnace to a hand furnace (holding furnace) installed for each die casting machine. It is.

<Conventional Technology> When distributing molten metal from a melting furnace to the local furnace of each die-casting machine, conventionally the molten metal from the melting furnace was placed in a ladle and transported to the local furnace by a lift car or the like. As a result, workability is extremely poor, and there are situations in which the distribution of metal cannot be completed in time.In addition, the distribution work is dangerous and requires extreme caution, and the surface of the molten metal is Because it is exposed to the atmosphere, there are inconveniences such as heat loss of the molten metal and capacity loss due to the formation of an oxide film, and when the oxide film gets mixed into the molten metal, it causes defects in die-cast products. there were.

<Problems to be Solved by the Invention> The present invention has been made in view of these conventional inconveniences and drawbacks, and is a vr that can solve all of the above-mentioned conventional inconveniences.
The purpose is to provide a standard molten metal distribution device.

Means for Solving the Problems〉 As a means for solving the problems, the metal distribution device according to the first aspect of the present invention airtightly connects the metal distribution path for distributing molten metal to the local furnace of each die casting machine. The molten metal distribution device according to the second aspect of the present invention is characterized in that the molten metal is formed in the shape of a mold and that the molten metal distribution path is filled with an inert gas. The third aspect of the present invention is characterized in that the hot water channel is formed in an airtight manner, the hot water channel is filled with an inert gas, and a heating means is provided. It consists of a pressure tank that feeds metal under pressure to the distribution channel, and a distribution channel that distributes the molten metal pressure-fed from the pressure tank to the local furnace of each die-casting machine. Formed in an airtight manner,
The hot water supply channel is characterized by being filled with inert gas and provided with heater wires.

<Example> An example of implementing the present invention will be described below based on the drawings.

In the figure, (A) is a melting furnace, (B) is a die-casting machine, and each die-casting machine (8) has a hand furnace (holding furnace) (C
) are located. Each hand furnace (C) is connected to the a conduit (D
), and the molten metal (
III) is now being distributed. Then, a branch conduit (
D') is provided with an appropriate shutoff means to prevent the inert gas filled in the hot water distribution conduit (D), which will be described later, from inadvertently flowing out from each local furnace (C).

As shown in FIG. 4, the interrupting means according to this embodiment is installed in the branch conduit (D') from its upper wall (ib'). The cutting plate (2) is inserted deeper than the liquid level of the molten metal (m 2 ).

The hot water distribution path (D) is constructed by using a fireproof heat insulating material and stacking a lower wall member (1a) having a generally concave cross section and a clay wall member (1b) having a generally reverse concave cross section in a clasped shape to form an internally airtight structure. , each hand furnace (
Build it on top of tower (3) so that it is on the same level as C). Then, the hot water distribution channel (D) is filled with an inert gas such as nitrogen gas, and an appropriate heating means is provided.

In the figure, (4) is a gas pipe that supplies inert gas into the hot water distribution conduit (D), and (5) is the state of the inert gas in the hot water distribution conduit (D). This is a gas detector that detects (1). Further, the heating means is as shown in the illustrated embodiment (heater wire (6)
Alternatively, small burners may be installed at appropriate intervals B in the hot water distribution path (D).

Therefore, the molten metal distribution channel (D) is arranged near the hand furnace <C) arranged for each die-casting machine (B), and each hand furnace (
C) through a branch conduit (D'), and one end of this distribution conduit (D) is directly connected to the melting furnace <A), or a pressure-feeding tank. It is connected in communication with the melting furnace (A) via (E), and distributes the molten metal in the melting furnace (A) to each local furnace (C).

When the molten metal distribution channel (D) is directly connected to the melting furnace (A), the molten metal should be gently sloped along the entire length so that the molten metal flows naturally to the end of the molten metal distribution channel (D). If the melting furnace (A) is connected to the melting furnace (A
) to transport the molten metal in the melting furnace (A) to each hand furnace (C).
Make sure to pump it up to.

The level (amount) of molten metal in the pressure feeding tank (E) is set to be the same as the level (ffi) of molten metal in the distribution conduit (D), and the level of molten metal is set, for example, to When the molten metal in the distribution channel (D) decreases, the pressure i (E
The piston ') operates to pump molten metal to the metering conduit (D).

<Effects of the Invention> Since the molten metal dispensing apparatus of the present invention is configured in this manner, the following effects are achieved.

That is, the metal distribution device according to the first aspect of the present invention forms the arrangement conduit for distributing molten metal to the local furnace of each die-casting machine in an airtight manner, and also fills the distribution conduit with an inert gas. As a result, the molten metal in the melting furnace can be efficiently and safely distributed from the distribution channel to each location without having to pick up the molten metal in a ladle and transport it using a lift car. Since the metal is covered with inert gas while being distributed from the melting furnace to each local furnace, there is no risk of the surface being oxidized, thus reducing capacity loss due to the formation of an oxide film or contamination of the molten metal with an oxide film. disappears.

In addition to the first aspect of the present invention, the hot water distribution device according to the second aspect of the present invention is provided with a heating means in the hot water distribution path, so that there is a possibility that the temperature of the molten metal will decrease during the distribution of hot water. Therefore, molten metal can be distributed to each local furnace at a constant high temperature.

In addition to the first and second aspects of the present invention, a hot water distribution device according to a third aspect of the present invention is provided with a pressure feeding tank for force-feeding molten metal from a melting furnace to a distribution conduit, and a hot water distribution device that extends over the entire length of a hot water distribution conduit. At that time, it became easier to manage the layout ffi because the molten metal was formed horizontally, and even if oxide films and other impurities were floating on the surface of the molten metal moving in the distribution channel, these impurities could be removed. There is almost no movement, so there is no possibility that these impurities will be mixed into the molten metal in the local furnace.

Therefore, the intended purpose can be achieved.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the present invention, and the first figure is a plan view and the second figure is a plan view.
The figure is a sectional view taken along line (2)-(2) in Fig. 1, Fig. 3 is an enlarged sectional view taken along line (3)-(3) in Fig.
)-(4) line enlarged cross-sectional view. In the figure, (A) is a melting furnace, (B) is a die-casting machine, (
C) is a local furnace, (D) is a distribution channel, (E) is a pressure tank, and (6) is a heating means (heater wire).

Claims (3)

[Claims] (1) A molten metal distribution channel that distributes molten metal to the local furnace of each die-casting machine is formed in an airtight manner, and the molten metal distribution channel is filled with an inert gas. Hot water distribution equipment. (2) The molten metal distribution channel for distributing molten metal to the local furnace of each die-casting machine is formed in an airtight manner, and the molten metal distribution channel is filled with an inert gas and a heating means is provided. Characteristics of molten metal distribution equipment. (3) Consisting of a pressure tank that pumps the molten metal from the melting furnace to the distribution channel, and a distribution channel that distributes the molten metal pressure-fed from the pressure tank to the local furnace of each die-casting machine; A molten metal distribution device characterized in that a channel is formed horizontally and airtight over the entire length, the channel is filled with an inert gas, and a heater wire is provided.