JPH09136155A - Tiltable casting device and core used with this device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tiltable casting device which can simply remove oxide film (slag) floated up on the surface of molten metal. SOLUTION: In the tiltable casting device arranging a molten metal pool part 3 in an opening part C" of a runner C' communicated with a cavity C arranged in a mold 1 and supplying the molten metal (a) in the molten metal pool part 3 into the cavity C through the runner C' by tilting the mold 1, a slag removing part 1D positioned on the surface at the time when the molten metal (a) flows at least the runner C' in the runner C', and integrated with a cast product at the time when the molten metal (a) solidifies.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tiltable casting apparatus, and more particularly to a tiltable casting apparatus in which a metal oxide coating floating on the surface of a molten metal is not supplied into a cavity. For a suitable core.

[0002]

2. Description of the Related Art FIG. 3A is a sectional view showing a schematic structure of a conventional tilting casting apparatus. This tiltable casting apparatus has a mold 1 configured by joining an upper mold 1a and a lower mold 1b, which are metal molds, and a rotary mechanism (not shown) about a center position O of the mold 1 It is configured to rotate in the direction indicated by the arrow 3 (b), that is, in the clockwise direction.

A cavity C having a core 2 interposed therein is provided in the mold 1, and the cavity C is provided.
Has a runner C ′ communicating with the outside of the mold 1.

A mold 1 (lower mold 1b in the illustrated example) 1 on the side of the opening C "of the runner C'is provided with a puddle 3 having a capacity substantially equal to the capacity of the cavity C.

After the molten metal a such as an aluminum alloy is put in the pool 3, the mold 1 is gradually rotated as shown in FIG. 3B, so that the molten metal a in the pool 3 runs. C '
And is supplied into the cavity C via. At the time of supplying the molten metal a, in order to prevent an oxide film, a so-called slag, which is generated when the surface of the molten metal a comes into contact with air, from being taken into the cavity C and mixed in the cast product, the runner C ' A baffle plate B is provided on the mold 1 in the opening C ″ of the mold 1.

The baffle plate B is determined so that the lower end portion thereof is located at least in the molten metal a, and the molten metal a
A sufficient space is secured on the lower end side so as not to obstruct the flow of.

When the molten metal a is supplied into the cavity C while the slag is removed by the baffle plate B, and the supplied molten metal a is solidified, the mold 1 is moved to its original position (see FIG. 3).
It is reversely rotated to the position (a). Then, the upper mold 1a and the lower mold 1b are separated, and the cast product is taken out from the cavity C. Then, after the core 2 is removed from the taken-out cast product, the runner C'is cut to obtain a cast product.

[0008]

However, in the conventional tilting casting apparatus described above, since the baffle plate for removing the slag is required, it not only becomes an obstacle when cleaning the mold, but also the apparatus becomes complicated. There was a flaw.

Therefore, the present invention has been made in order to solve the above-mentioned drawbacks, and an object thereof is to provide a tilting casting apparatus capable of removing a slag without using a baffle plate, and suitable for the apparatus. To provide a good core.

[0010]

In order to achieve the above object, a tilting casting apparatus according to the present invention is provided with a basin at the opening of a runner leading to a cavity provided in the mold, In a tilting casting device that tilts and supplies the molten metal in the pool through the runner into the cavity,
It is characterized in that at least a slag removing portion is provided inside the runner, which is located on a surface of the runner when the melt flows and is integrated with a cast product when the melt solidifies. Further, the slag removing portion is provided in a core arranged in the cavity.

Further, in order to achieve the above object, the core used in the tilting casting apparatus according to the present invention is provided with a molten metal pool at the opening of a runner leading to a cavity provided in the mold, Is a core disposed in the cavity of the tiltable casting apparatus for tilting the molten metal in the pool to supply the molten metal into the cavity through the runway. It is characterized in that a slag removing portion located on the surface when the molten metal flows through the runner is provided in the contact portion.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. Note that the same reference numerals are used for the same components as the conventional one, and the description of these components will be duplicated. Therefore, different components will be denoted by different reference numerals.

FIG. 1A is a cross-sectional view showing a schematic structure of a casting apparatus according to one embodiment, and in the drawing, 10 is a slag removing unit which is integrally formed with a core 2. .

The slag removing portion 10 is located on the inlet side of the runner C'which leads to the cavity C (on the side of the opening C "of the runner C ') when the core 2 is placed in the mold 1. The bottom end of the slag removing portion 10 is determined to be located at least on the surface of the molten metal a passing through the runner C ′.

FIG. 2 is a perspective view of the runner C'in the slag removing portion 10, and as is clear from this figure, the slag removing portion 10 is shown.
There are a plurality (three in the illustrated example) provided at predetermined intervals in the direction perpendicular to the flow direction of the molten metal a, and the lower end of each slag removing unit 10 and the bottom of the runner C '. There is a gap between and. Therefore, a sufficient gap for the molten metal a to flow is secured in the runner C ′, and these slag removing parts 1
There is no possibility that 0, 10 ... Obstruct the flow of the molten metal a.

After pouring a molten metal a such as an aluminum alloy into the pool 3, the mold 1 is gradually rotated as shown in FIG. 1 (b). C '
And is supplied into the cavity C via.

During the supply of the molten metal a, the slag a'floating on the surface of the molten metal a, as shown in FIG.
The flow is blocked by 0, and only the molten metal a is supplied into the cavity C.

When the supplied molten metal a is solidified, the mold 1
Is reversely rotated to the original position (the position shown in FIG. 1A). Then, the upper mold 1a and the lower mold 1b are separated, and the cast product is taken out from the cavity C. Then, after the core 2 is removed from the taken-out cast product, the runner C'is cut to obtain a cast product.

As described above, since the tilting casting apparatus according to the present embodiment has the slag removing unit 10, the slag can be removed efficiently without specially preparing a baffle plate as in the conventional case. can do. Moreover, the slag removing unit 10 is the core 2
It has the feature that it can be easily manufactured integrally with.

[0020]

EFFECTS OF THE INVENTION The tilting casting apparatus according to the present invention is a slag removing apparatus which is located in a runner at least on the surface of the runner as the melt flows, and is integrated with a cast product when the melt solidifies. Since the part is provided, the slag can be efficiently removed without specially preparing a baffle plate as in the conventional case. Further, when the slag removing portion is provided on the core provided in the cavity, it can be easily manufactured together with the manufacturing of the core.

The core used in the tilting casting apparatus according to the present invention is provided with a slag removing portion located on the surface of the core when the molten metal flows, in the portion of the core that contacts the runner. The slag can be effectively removed.

[Brief description of the drawings]

FIG. 1A is a cross-sectional view showing a schematic configuration of a tilting casting apparatus according to an embodiment, and FIG. 1B is an explanatory view showing a middle of rotation of a mold.

FIG. 2 is a perspective view for explaining slag removal.

FIG. 3A is a cross-sectional view showing a schematic configuration of a conventional tilting casting apparatus, and FIG. 3B is an explanatory view showing a middle of rotation of a mold.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mold 1a Upper mold 1b Lower mold 2 Core 3 Hot water pool 10 Slag removing part C cavity C'runner C "opening a Molten metal

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[Procedure amendment]

[Submission date] November 27, 1995

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] Figure 3

[Correction method] Change

[Correction contents]

[Figure 3]

Claims (3)

[Claims] 1. A hot water pool is provided at an opening of a runway leading to a cavity provided in a mold, and the mold is tilted to supply the molten metal in the hot pool into the cavity through the runner. In the tilting casting apparatus, the inside of the runner is provided with a slag removing unit which is located at least on a surface when the melt flows through the runner and is integrated with a cast product when the melt solidifies. Tilting casting equipment. 2. The tilting casting apparatus according to claim 1, wherein the slag removing portion is provided in a core arranged in the cavity. 3. A basin is provided at an opening of a runner leading to a cavity provided in the mold, and the mold is tilted to supply the molten metal in the basin into the cavity through the runner. A core disposed in the cavity of the tiltable casting apparatus, wherein a portion of the core that contacts the runner is provided with a slag removing portion located on a surface when molten metal flows through the runner. A core that is characterized.