JPS61132244A - Method and device for continuous casting - Google Patents

Abstract

PURPOSE:To cool and solidify uniformly a molten metal and to improve the productivity of an ingot by inserting a heat pipe which is protected with a heat resistant protective pipe and is intervened with a low melting metal into a continuous casting mold so that the delayed cooling part of the molten metal is cooled by heat absorption. CONSTITUTION:The heat pipe 5 which is protected by the heat resistant protective pipe 9 and is intervened with the low melting metal 10 to improve heat conductivity is inserted into the continuous casting mold 1. The part 4 where the cooling of the molten metal is delayed is cooled by the heat absorption. The molten metal is uniformly cooled and solidified in the mold 1. The increase in the casting speed is thus made possible and the productivity of the ingot is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a continuous casting method for molten metal and an apparatus therefor, and includes 4! The present invention relates to a continuous casting method and an apparatus thereof with improved casting speed.

[Conventional technology]

The conventional continuous casting method and its equipment are shown in Fig. 6.
The molten metal 3 poured into the mold 1 from the pouring port 2 is poured into the mold 11.
It was then cooled down and continuously cast downward.

In order to speed up the cooling of the molten metal, cooling water 8 was passed through the mold 1, cooling water 8 was sprayed onto the ingot 6 that came out downward, and a heat pipe 5 was installed in the mold 1. .

[Problem that the invention seeks to solve]

However, in such conventional continuous casting methods and devices, the molten metal 3 poured into the mold 1 from the pouring port 2 is cooled by heat conduction of the mold 1, and the molten metal in the mold 1 is not poured. If the volume of the part that is exposed is large,
There is a problem in that the portion 4 where cooling of the molten metal is delayed becomes large, making it impossible to increase the casting speed.

[Failure to solve the problem]

In order to eliminate the above-mentioned problems in the conventional method, the present invention provides a continuous casting method in which the molten metal 6 poured into the mold 1 from the pouring port 2 is cooled by the mold 1. A heat pipe 5 is inserted, and the inserted heat pipe 5 quickly cools the portion 4 where the cooling of the molten metal is delayed.

[Effect]

According to the above-described means of the present invention, the heat pipe 5 inserted into the portion 4 where the cooling of the molten metal is delayed transfers the heat of the portion 4 where the cooling of the molten metal is delayed to the outside 2, so that the cooling of the molten metal is delayed. Increases speed.

〔Example〕

The present invention will be explained below with reference to embodiments shown in the drawings.

It should be noted that the same components as those of the conventional device described above are designated by the same reference numerals in the drawings.

FIG. 1 shows the continuous casting method and apparatus of the present invention, in which a mold 1 is cooled by passing cooling water, and the molten metal 3 poured from the pouring port 2 is cooled by the mold 1. In addition, although it is a conventional method to spray cooling water 8 from surrounding nozzles 7 onto the ingot 6 coming out of the mold 1 in a downward direction, heat is added to the portion 4 where cooling of the molten metal is delayed. By inserting one end of the pipe 5 and cooling the other end of the inserted heat pipe 5 with air or water, the heat of the portion 4 where cooling of the molten metal is delayed is transferred to the outside and quickly cooled.

In FIG. 2, the heat pipe 4 used in the present invention is inserted into a heat-resistant protection tube 9 to prevent damage, and the space between the heat pipe 5 and the protection tube 9 is filled with heat. This is an example in which a low melting point metal 10 such as lead or tin or an alloy 10 thereof is embedded in order to improve conduction. Also, in Figure 1, 1
Although an example is shown in which a single heat pipe is inserted, the cooling capacity can be further improved by inserting a plurality of heat pipes from the periphery.

〔Effect of the invention〕

As explained above, the continuous casting method and its device according to the present invention are characterized in that in the continuous casting method in which the molten metal poured into the mold from the pouring port is cooled in the mold, the continuous casting method uses a heat sink inserted in the part where the cooling of the molten metal is delayed. The molten metal is cooled by pipes.

Therefore, even if the volume of the part of the mold into which the molten metal is poured is large and the cooling of the molten metal is delayed, the molten metal is quickly cooled. Therefore, the casting speed is significantly improved and the ingot production capacity is improved.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view showing a main part of one embodiment of the continuous casting method and apparatus of the present invention, and FIG. 2 shows a main part of another embodiment of the continuous casting method and apparatus for manufacturing the same of the present invention. FIG. 6 is a longitudinal sectional view showing a conventional continuous casting method and apparatus. 1; Mold, 2; Pouring port, 6; Molten metal, 4; Part where cooling of the molten metal is delayed, 5; Heat pipe, 6; Ingot, 7; Nozzle, 8; Cooling water, 9; Protection tube, 10; Low melting point metal .

Claims (2)

[Claims] (1) A continuous casting method in which the molten metal poured into the mold from the pouring port is cooled by the mold, characterized in that the molten metal is cooled by a heat pipe inserted in a portion where cooling of the molten metal is delayed. Casting method. (2) A continuous casting device comprising a mold and a spout for pouring molten metal into the mold, characterized in that a heat pipe is inserted in a portion where cooling of the molten metal is delayed.