JPS5835044A - Method and device for production of ingot - Google Patents

Abstract

PURPOSE:To reduce fuel costs required for remelting of ingots after carrying out and transportation by charging molten metal into an ingot case of which the hole opened in the bottom part is closed with an ejecting plate and removing the high temp. cast ingot right after solidification by forcing the ejecting plate upward. CONSTITUTION:With the hole 2 of an ingot case 1 held closed with an ejecting plate 4, molten metal of Al (alloy) or the like is charged into the case 1. Right after solidification of the molten metal, a cylinder 10 for rapping is operated to turn a cam 8 for rapping, thereby moving the plate 4 slightly upward with ejecting arm 6. A cast ingot 5 of high temp. is stripped from the inside surface of the case 1 by the above-mentioned operation. A lift cylinder 7 is operated to move the arms 6 upward, thereby moving the plate 4 upper than the top edge surface 1b of the case 1 and removing the ingot 5 from the case 1. In succession, the fork or the like of a fork lift is inserted into the bottom part of the ingot 5 and the ingot is lifted and carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing an ingot for melting and an apparatus therefor.

An ingot for melting refers to a piece of refined metal such as aluminum, zinc, tin, iron, or an alloy thereof that has been melted and cast into a cast ingot, which cannot be remelted. It serves as the raw material for casting individual products. This melting ingot must be remelted in order to cast individual products, but a large amount of fuel (such as heavy oil) is required to melt the melting ingot, which has cooled to almost the same temperature as the outside temperature. Therefore, after casting, it is desirable to remove the ingot from the ingot case and transport it in a state as high as possible. In the case of large waves of ingots (in the case of aluminum, this refers to 300 to 4 ingots or more), once they cool down, a large amount of fuel is required to remelt them, so it is necessary to maintain the high temperature immediately after casting as much as possible. It is desirable to leave it there.

However, in the conventional manufacturing method, it is not possible to extract the hot ingot from the ingot case and transport it. That is, conventionally, when manufacturing large ingots, molten metal is poured into an ingot case, and before the molten metal solidifies, a hanging claw is inserted into the molten metal along the side wall of the ingot case, and as the molten metal solidifies, it is placed into the molten metal. Since the suspension claws are firmly attached to the ingot, the ingots are removed from the ingot case by the suspension claws. Therefore, if the inside of the casting ingot is not completely solidified, there is a risk that the suspension claws will come off from the casting ingot, which naturally causes the casting ingot to cool down.

In view of these inconveniences and drawbacks of the conventional method, the present invention provides a large ingot that can be removed from the ingot case and transported at the highest possible temperature after casting, reduces the fuel cost required for remelting, and can be manufactured safely. The purpose is to provide a manufacturing method and equipment for the same.

Hereinafter, one example of implementing the present invention will be described based on the drawings.

The ingot case (1) has the same structure as the conventional one, and has a hole 12 formed in its bottom (1a).
Fixedly installed on the top of the machine frame (3).

The hole (2) in the ingot case is the extrusion plate (4) during casting.
Immediately after solidification, it is opened by upward movement of the extrusion plate (4).

The extrusion plate (4) closes the hole (2) of the ingot case (1) and moves the cast ingot (5) into the ingot case (1).
) and is moved up and down within the ingot case (1) by the extrusion arm (6).

The extrusion arm (6) is installed vertically on the machine frame (3), the extrusion plate (4) is attached to the upper part, and the lift cylinder (7) is attached to the lower part. 4) and moves up and down.

Note that (8) in the figure is a die-cutting cam to assist the upward movement of the push-out arm (6) during die-cutting. ) and press the mold cutting cylinder Q.
It is designed to rotate by the vertical movement of l.

In addition, the CL umbrella in the figure is a guide rail for stably moving the extrusion arm (6) up and down, and the CL umbrella (9) of the extrusion arm (6)
) and are connected via a guide bearing (6).

Next, a method for manufacturing a large ingot according to the present invention will be explained in order of steps.

First, use the extrusion plate (4) to open the ingot case (socket hole (2)
The molten metal is injected into the ingot case (1).

Immediately after the molten metal solidifies, the die-cutting cylinder (G) is operated to rotate the die-cutting cam (8), and the extrusion plate (4) is slightly pushed through the extrusion arm (6). Move it up.

Then, the hot cast ingot (5) peels off from the inner surface of the ingot case (states shown in FIGS. 1 to 4).

After that, the lift cylinder (7) is operated to release the push-out arm (6).
) up and move the extrusion plate (4) to the ingot case (1).
Move it up until it is above the upper level surface (1b). Then,
The hot cast ingot (5) is supported by the extrusion plate (4) and extracted from the ingot case (1). This cast ingo (y) (5) is lifted and carried out by inserting a fork of a forklift into the bottom thereof.

In the present invention, the molten metal is poured into an ingot case with a hole drilled in the bottom by closing the hole with an extrusion plate, and immediately after solidification, the extrusion plate is pushed up and the high-temperature cast ingot is extracted from the ingot case. Compared to the conventional method using hanging claws, the cast ingot, which is at a considerably high temperature, can be extracted from the ingot case and transported, and the fuel cost required for remelting can be greatly reduced.

Moreover, since there is no need to wait for the cast ingot to cool sufficiently, production can be accomplished in a short time, and the work environment can also be improved because the inside of the factory is not exposed to the heat dissipated from the cast ingot for a long time.

In addition, unlike the case of using conventional hanging claws, the hanging claws are used when removing the cast ingot from the ingot case or when transporting the cast ingot.

There is no risk of it separating from the base, so you can work safely.

Therefore, the intended purpose can be achieved.

[Brief explanation of the drawing]

The drawings show one embodiment of the device of the present invention, in which FIG. 1 is a vertical front view, FIG. 2 is a plan view, FIG. 3 is a vertical side view, and FIG. 4 is a vertical front view in an operating state. In the figure, (1) is the ingot case, (2) is the hole, and (3)
machine frame, (4) is an extrusion plate, (5) is a casting ingot, (
6) is an extrusion arm.

Claims (2)

[Claims] (1) The ingot case has a hole drilled in the bottom, the hole is closed with an extrusion plate, molten metal is injected, and immediately after solidification, the extrusion plate is pushed up and the high-temperature cast ingot is extracted from the ingot case. Method of manufacturing ingots. (2) An ingot case is installed on the top of the machine frame, a hole is formed in the bottom of the ingot case, and the hole is closed by an extrusion plate supported by an extrusion arm that can move up and down. Ingot manufacturing equipment.