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Up-drawing continuous casting method, up-drawing continuous casting apparatus, and continuous casting

Inactive Publication Date: 2016-11-17
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides an up-drawing continuous casting method and an up-drawing continuous casting apparatus that can increase productivity. This is accomplished by using a hollow member to draw up molten metal and flowing inert gas through the hollow member to cool it. This cooling promotes faster drawing of the hollow member, allowing for improved productivity of the casting process.

Problems solved by technology

However, the flow rate of the coolant gas has a limit, so there is a limit to improvement of the productivity (that is, the casting speed) by increasing the flow rate of the coolant gas in the free casting method of the related art.

Method used

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  • Up-drawing continuous casting method, up-drawing continuous casting apparatus, and continuous casting
  • Up-drawing continuous casting method, up-drawing continuous casting apparatus, and continuous casting
  • Up-drawing continuous casting method, up-drawing continuous casting apparatus, and continuous casting

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embodiment 1

[0038]With reference to drawings, the following describes embodiments of the present invention. FIG. 1 is a sectional view to describe an up-drawing continuous casting apparatus according to Embodiment 1. The up-drawing continuous casting apparatus according to the present embodiment forms a casting having a predetermined shape while drawing up molten metal. As illustrated in FIG. 1, the up-drawing casting apparatus according to the present embodiment includes a holding furnace. 10, a hollow member 11, a driving portion 13, a cooling portion 15, and a gas supply portion 16.

[0039]The holding furnace 10 holds molten metal M1. The molten metal M1 is molten metal of aluminum or aluminum alloy, for example. The holding furnace 10 holds the molten metal M1 at a temperature of a melting point or more of a material constituting the molten metal M1. In the example in FIG. 1, molten metal is not replenished into the holding furnace 10 during casting, so that a surface level of the molten meta...

embodiment 2

[0063]Next will be described Embodiment 2 of the present invention. FIG. 5 is a sectional view to describe an up-drawing continuous casting apparatus according to Embodiment 2. The up-drawing continuous casting apparatus illustrated in FIG. 5 is different from the up-drawing continuous casting apparatus (see FIG. 1) described in Embodiment 1 in that a shape determining member 25 is provided. Except for the above point, the up-drawing continuous casting apparatus of Embodiment 2 is the same as the up-drawing continuous casting apparatus described in Embodiment 1, so the same reference sign is assigned to the same constituent and duplicate description is omitted.

[0064]The shape determining member 25 is a member configured to determine a shape (a sectional shape) of a casting M3 by applying, to molten metal M1, an external force (that is, a force that acts on the molten metal M1 at the time when the molten metal M1 passes through a molten metal passage portion 26), when the molten meta...

embodiment 3

[0073]Next will be described Embodiment 3 of the present invention. Embodiments 1, 2 deal with a case where a casting is formed by use of one hollow member. Embodiment 3 deals with a case where a casting is formed by use of a plurality of hollow members. Note that the following exemplary castings are merely examples, and castings having other various shapes can be formed in an up-drawing continuous casting method according to the present invention. Note that an up-drawing continuous casting apparatus for use in the present embodiment is the same as the up-drawing continuous casting apparatus as described in Embodiments 1, 2, so duplicate-description is omitted.

[0074]FIGS. 7 to 17 are perspective views each illustrating an example of the placement of hollow members at the time of forming a casting by use of the up-drawing continuous casting method according to the present embodiment, and an example of the casting thus formed. For example, a plurality of hollow members may be placed s...

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Abstract

An up-drawing continuous casting method according to the present invention is an up-drawing continuous casting method for forming a casting having a predetermined shape by drawing up molten metal held in a holding furnace, and includes: a step of introducing, into the molten metal, a hollow member configured to draw up the molten metal; and a step of flowing inert gas into the hollow member so as to pour the inert gas into the molten metal. The casting is formed by drawing up the molten metal with the hollow member after stopping the flowing of the inert gas into the molten metal.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to an up-drawing continuous casting method, an up-drawing continuous casting apparatus, and a continuous casting.[0003]2. Description of Related Art[0004]Japanese Patent Application Publication No. 2012-61518 (JP 2012-61518 A) describes a technique related to a free casting method (an up-drawing continuous casting method) that does not require a mold. In the free casting method described in JP 2012-61518 A, a starter is immersed into a surface of molten metal (that is, a molten metal surface), and then the starter is drawn up to lead out the molten metal. At this time, a casting having a desired sectional shape is continuously casted by leading out the molten metal via a shape determining member placed near the molten metal surface, and then cooling the molten metal thus led out.[0005]With a normal continuous casting method, the sectional shape and the shape in a longitudinal direction are ...

Claims

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Application Information

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IPC IPC(8): B22D11/00B22D11/041B22D27/04B22D11/11B22D11/12B22D11/124B22D11/04B22D11/14
CPCB22D11/006B22D11/0403B22D11/041B22D27/045B22D11/11B22D11/12B22D11/124B22D11/145B22D11/01
Inventor FURUKAWA, YUICHIMORITA, KEIICHI
Owner TOYOTA JIDOSHA KK