JPH03142052A - Centrifugal casting apparatus - Google Patents

Abstract

PURPOSE:To shorten time till casting molten metal into a mold by laying a ladle and a spout on the laying table at the same time. CONSTITUTION:At the time of casting the molten metal, the first laying table 6a is shifted to a holding furnace 2 side and the molten metal is poured into a triangle ladle 4 from the pouring hole 2a of the holding furnace 2 by the quantity thereof weighed with an attached balance. The first laying table 6a is shifted to a mold 1 side and also a second laying table 6b is shifted in the vertical direction and a pouring hole 5a of the spout 5 is inserted into the center of opening hole part of the mold 1. The mold 1 is rotated with a roller R. The triangle ladle 4 is tilted toward the spout 5 and the molten metal holding in the triangle ladle 4 is poured into the mold 1 through the spout 5. By this method, at each time of changing the mold having a different diameter, the positional adjustment for pouring in the ladle to the spout is unnecessary to execute and the casting time of molten metal into the mold can be shortened.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a centrifugal casting apparatus comprising a mold for centrifugal casting, a ladle for measuring and holding molten metal, and a chamber for pouring molten metal from the ladle into the mold. .

[Conventional technology]

Conventionally, this type of centrifugal casting equipment has a ladle and a ladle to position the ladle to the mold and the ladle to the mold when pouring molten metal into molds with different diameters. There is a structure in which these are independently movable relative to each other in distance and up and down.

[Problem to be solved by the invention]

However, according to the above-mentioned prior art, in order to pour the molten metal into the mold, first, the grate was brought close to the mold, and the spout was adjusted up and down to insert the spout of the grate into the center of the opening of the mold. Thereafter, two adjustment steps are required: adjusting the ladle holding a predetermined amount of molten metal relative to the ladle, and moving it up and down, which has the disadvantage of being time consuming.

Further, the time spent on such adjustment lowers the temperature of the molten metal in the ladle, so the molten metal supplied to the ladle must be melted at a sufficiently high temperature. Another disadvantage is that holding such high-temperature molten metal tends to impair the durability of the refractory material in the ladle.

An object of the present invention is to eliminate the above-mentioned conventional drawbacks.

[Means to solve the problem]

In order to achieve this object, the characteristic configuration of the centrifugal casting apparatus according to the present invention is that the ladle and the pot are placed at the same time, and a mounting table is provided that is movable relative to the mold, near and far, and up and down. It's in a certain place.

[For production]

In other words, since the ladle and the ladle are placed on the mounting table at the same time, the pouring position of the ladle relative to the ladle can be adjusted to a constant value in advance.

When pouring from a ladle into a mold via a girdle, a predetermined amount of molten metal is first measured and poured using a scale attached to the ladle and held.

Next, the mounting table is brought close to the mold, and the mounting table is adjusted in distance and up and down in order to insert the pouring spout into the center of the opening of the mold.

After that, the ladle is tilted and the molten metal is poured into the furnace.

[Effect of the invention] Therefore, there is no need to adjust the pouring position of the ladle relative to the grate every time a mold with a different diameter is changed, so the time required to pour the molten metal held in the ladle into the mold is shortened. I can now do it.

As a result, the drop in the temperature of the molten metal is reduced, making it possible to lower the temperature of the molten metal supplied to the ladle, thereby improving the durability of the refractory material in the ladle.

〔Example〕

Examples will be described below.

As shown in Fig. 1, the centrifugal casting device has a cylindrical mold (
1), a roller (R) that rotates the mold (1) around its axis, and an automatic pouring mechanism (3) that pours molten metal into the mold (1).
It is composed of etc.

The automatic pouring mechanism (3) includes a triangular ladle (4) that is approximately triangular in front view and that measures and holds a predetermined amount of molten metal from a holding furnace (2) that stores and holds the molten metal. A spout (5) for pouring the metal into the mold (1) and a triangular ladle (4)
and a mounting table (6) on which the grate (5) is placed.

The mounting table (6) is placed in a holding furnace (
2) The first mounting table (6a) is movable in the distance direction between the
and a vertical direction for adjusting the vertical position of the triangular ladle (4) with respect to the holding furnace (2) and the vertical position of the pouring port (5a) of the said funnel (5>) with respect to the mold (1). It is composed of a second movable mounting table (6b).

The triangular ladle (4) is configured to be able to tilt in one direction, and is provided with a grate (5) in the direction of its tilting, and the molten metal is poured into the grate (5) by tilting the triangular ladle (4). Adjust the position accordingly.

■ According to the automatic pouring mechanism (3) described above, when pouring molten metal, the first mounting table (6a) is moved to the holding furnace (2) side, and the pouring port (2a) of the holding furnace (2) is opened. Kara triangular ladle (4)
An appropriate amount of molten metal is poured into the triangular ladle (4), in an amount that corresponds to the size, thickness, etc. of the cast product, and is measured using a scale (not shown) attached to the triangular ladle (4).

■ Move the first mounting table (6a) toward the mold (1) and move the second mounting table (6b) vertically to connect the spout (5a) of the spout (5) to the mold (1). Insert it into the center of the opening.

■ Rotate the mold (1) with the roller (R).

■ The triangular ladle (4) is tilted to the slender (5), and the molten metal held in the triangular ladle is poured into the mold (1) through the slender (5).
Pour into.

The above-mentioned process is performed in several tens of seconds, and the process is completed before the temperature reaches the limit temperature at which the molten metal solidifies.

[Another example]

Another embodiment will be described below.

In the previous embodiment, the mounting table (6) is composed of a first mounting table (6a) that is movable in the distance direction and a second mounting table (6b) that is movable in the vertical direction. It may be configured with a single mounting table (6) that is vertically movable.

In the previous embodiment, the ladle is a triangular ladle (4) that can be tilted freely.
However, the ladle is not limited to this, and instead of tilting, an electromagnetic pump or the like may be used to flow out the molten metal, and its flow mechanism and shape are arbitrary.

4. Note that although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of the drawing]

The drawing is a schematic configuration diagram of a centrifugal casting apparatus according to the present invention. (1)・・・Mold, (4〉・・・Ladle, (
5)・・・・・・(6)・・・・・・Placement stand.

Claims (1)

[Claims] A mold for centrifugal casting (1) and a ladle for measuring and holding molten metal (
4) and a funnel (5) for pouring metal from the ladle (4) into the mold (1), wherein the ladle (4) and the funnel (5) are mounted at the same time. At the same time,
A centrifugal casting apparatus that is provided with a mounting table (6) that is movable relative to the mold (1), both near and far and up and down.