JPS5940536B2 - Continuous ingot manufacturing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for continuously vertically casting ingots of non-ferrous metals such as aluminum or steel.

The conventional vertical continuous ingot casting method is a so-called batch casting method in which ingots such as slabs or billets of a certain length are cast in a batch manner, which is widely used in the production of ingots of non-ferrous metals such as aluminum and copper. The semi-continuous casting method and the complete casting method, which is used in the production of ingots of steel, etc., by continuously casting and cutting the ingot that descends from the mold into predetermined lengths to obtain ingots of a predetermined length. A continuous casting method is known.

However, in the former semi-continuous casting method, when an ingot of a predetermined length has been cast, pouring from the melting furnace or holding furnace is stopped, and the pouring gutter and mold are removed, or the gutter and mold are removed. The entire board on which the mold is attached must be tilted upward to open up the space above the ingot, and then the ingot must be lifted up by a crane, etc., and in order to start producing the next ingot, the mold and After resetting the gutter and inserting the dummy bar, it is necessary to restart pouring.

Therefore, with this method, there is a problem in that there is a large time loss between the time when an ingot of a predetermined length is finished casting and the next ingot production starts, and the work during this period requires a great deal of labor and effort. In addition, as mentioned above, when pouring is stopped, the molten metal becomes extremely solid near the tap opening of the melting furnace or holding furnace, in the gutter, etc., and this may hinder the next pouring.

On the other hand, in the latter fully continuous casting method, the equipment requires a cutting device, and this cutting device must be configured to descend in precisely synchronized fashion with the descent of the ingot, resulting in significantly higher equipment costs. Furthermore, the energy consumption of fuel and the like required for cutting is extremely large, and therefore there is a problem in that the overall equipment cost and operating cost are extremely high.

This invention was made in view of the above circumstances.
This improves work efficiency by eliminating the need to stop pouring and remove the mold or gutter between casting an ingot of a predetermined length and producing the next ingot, and also improves work efficiency by cutting the ingot. The purpose of this is to eliminate the need for equipment and reduce equipment costs and operating costs, and once an ingot of a predetermined length has been cast, the tap can be poured into the next mold without stopping. The present invention provides a continuous ingot manufacturing device capable of producing hot water.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to an apparatus for manufacturing an aluminum slab using an ingot will be described in detail with reference to the drawings.

In FIGS. 1 and 2, molds 13 to 1h are molds for continuous slab casting made with a cold water jacket structure, and these molds 1a to 1h are horizontally attached to the upper end of the vertical central support 2. They are supported by an annular substrate 3 and arranged in an annular and radial manner on the same horizontal plane, and sprays 4 for secondary cooling are provided below each of the molds 1a to 1h.

Further, among the molds 1a to 1h, the mold 1a at a predetermined position
A gutter 5 is provided above the mold for pouring molten metal into the mold at this position.

This gutter 5 is arranged so as to extend substantially horizontally in the radial direction from a position above the solid axis of the central column 2, and the base end support portion 5A of the gutter 5 is located above the solid axis of the central column 2. At the upper end 6A of the gutter lifting mechanism 6 such as a hydraulic cylinder installed at the top of the
It is attached so as to be rotatable about the central axis of the central support 2.

Further, a molten metal pouring pipe 7 is attached to the tip of the gutter 5 and hangs down to approximately the center of the mold 1a, and a distributor 8 is attached to the lower end of this molten metal pouring pipe 7.

Furthermore, a gear 6 is provided on the outer peripheral surface of the base end support portion 6A of the gutter 5.
B is formed, and this gear 6B is meshed with a pinion 9 provided so that the axial direction is perpendicular to the eccentric position of the central support 2, so that it will not become disengaged even if the gutter lifting mechanism 6 operates. ing.

The pinion 9 is rotated by a gutter rotation drive mechanism 10 such as a motor disposed at the upper end of the central support 2.

Further, below each of the molds 1a to 1h, there is a pulling down device 1 that descends while receiving the slab cast by each mold.
1 is arranged.

Each of these lowering devices 11 has a structure in which a receiving piece 11C for receiving the lower end of the slab 12 is attached to a lifting rod 11B of a lifting mechanism 11A such as a hydraulic cylinder.

Note that the receiver piece 11 is raised and set at a predetermined position in the mold as a dummy bar head before the start of casting.

These pulling-down devices 11 and the central column 2 are attached to a turntable 14 supported by a fixed base 13 so as to be rotatable about the central axis position of the central column 2, and this turntable 14 is A gear 15 is formed on its outer peripheral surface, and this gear 15 meshes with a pinion 17 of a rotational drive mechanism 16 such as a motor.

Therefore, when this rotational drive mechanism 16 is operated, the turntable 14 rotates in a horizontal plane, and each of the molds 1a to 1h fixed to the central support 2 and each pulling down device 11 simultaneously rotate in the same direction.

Furthermore, among the molds 1a to 1h, the slab 12 after casting is placed on the side of the space between the mold 1e at a predetermined position on the side where the gutter 5 is not located and the corresponding piece 11C. An unloading mechanism 18 is provided for unloading to the opposite direction.

This unloading mechanism 18 includes gripping arms 18A and 18A' that can move back and forth to a position sandwiching the slab 12 on the receiver piece 11C, clamp pieces 18B and 18B' that grip the slab between the gripping arms 18A and 18A', and hydraulic pressure. It is composed of clamp actuation mechanisms 18C and 18C' such as cylinders.

In the figure, reference numeral 19 denotes an intermediate pot for once receiving molten metal from a holding furnace or melting furnace (not shown) and pouring it into the gutter 5.

Next, the operation of the above embodiment will be explained.

As shown by the solid line in FIGS. 1 and 2, the gutter 5 is positioned in advance so that its tip is located above the center of the mold 1a, and the gutter 5 is lowered to place the distributor 8 into the mold 1a. The mold 1a is placed at a predetermined height.
The lower receiver is set in place in the mold 1a by raising the piece 11C.

In this state, the molten metal from the melting furnace or holding furnace is poured into the intermediate pot 19.
The molten metal is poured into the gutter 5 through the trough 5, and is poured from the tip of the molten metal into the mold 1a via the distributor 8.

After the level of the molten metal in the mold reaches the position of the distributor 8, when the receiver piece 11C is lowered at a predetermined speed in conjunction with pouring, the cast slab 12 is gradually lowered from within the mold 1a.

When a slab of a predetermined length is cast, the gutter lifting mechanism 6 is operated to raise the gutter 5 to a position where the distributor 8 is above the upper surface of the mold 1a.

Subsequently, the gutter rotation drive mechanism 10 is operated to rotate the gutter 5 in the counterclockwise direction in FIG. 2, and when the tip of the gutter 5 is positioned above the next mold 1b, the rotation of the gutter 5 is stopped. At the same time, the gutter lifting mechanism 6 is operated again to lower the gutter 5, and the distributor 8 at the tip thereof is positioned at a predetermined height within the mold 1b.

In addition, in advance, a piece (not shown) of the receiver for the mold 1b is attached to the mold 1b.
Raise it to a fixed position inside.

In this manner, the molten metal is poured into the mold 1b, and the slab 12 is cast again by lowering the receiver (not shown) below the mold 1b in the same manner as described above.

While casting is being performed in the mold 1b in this way, the rotational drive mechanism 16 is operated to move the turntable 14 to the second
Rotate clockwise as shown by arrow A in the figure.

That is, the molds 1a to 1h, the gutter 5 and the pulling down device 11
etc. are rotated during casting.

Then, when the mold has rotated by the arrangement angle (45 degrees in the illustrated example), that is, when the gutter 5 has returned to its original position as shown by the solid line, the rotation is stopped and casting is continued.

When casting in this mold 1b is completed, casting is performed in the next mold 1c in the same manner as described above, and the turntable 14 is rotated again during this casting.

In this way, each time a cast slab is cast into each mold, the cast slab is sent in the direction of the arrow, and when the first slab cast by the mold 1a reaches a position (unloading position) facing the unloading mechanism 18, it is unloaded. Grasping arm 18A of mechanism 18
, 18A' move forward to a position where they sandwich the slab 12.

After the clamp pieces 18B, 18B' clamp and grip the slab 12, the gripping arms 18A, 18A' retreat and the slab 12 is carried out.

Thereafter, the same operation is performed one after another to sequentially cast slabs 12 of a predetermined length, and the cast slabs 12 are sequentially transported out.

In the above description, the gutter 5 may be configured to pour metal into multiple molds at the same time, and in short, all the molds 1a to 1h.
It is sufficient if the configuration is such that the metal is poured into an appropriate number of molds, which is less than half of the molds.

In addition, in the case of a configuration in which melt is poured into multiple molds at the same time, the unloading mechanism 18 also unloads multiple slabs at the same time, or sequentially from when the molds stop rotating until they start rotating again. A configuration may be adopted in which a plurality of slabs are carried out.

Furthermore, since the unloading mechanism 18 is for unloading a slab that has already been cast, it is only necessary to arrange it so as to correspond to a mold at a position other than the position where the metal is poured by the gutter 5, and is not necessarily required. It is not necessary to provide it at a position opposite to the gutter 5.

Furthermore, in the above-mentioned configuration, the gutter 5 is raised so that the distributor 8 does not collide with the upper part of the mold wall surface when the gutter 5 rotates, but the distributor is not used and the lower end of the pouring pipe 7 is lower than the upper surface of the mold. If the gutter 5 is also located above, there is no need to raise the gutter 5, and therefore the gutter lifting mechanism 6 can be omitted in this case.

Furthermore, in the embodiment described above, the central support 2 is configured to rotate together with the turntable 14, and the molds 1a to 1h are fixed to the center support 2 via the substrate 3, and the central support is rotated. Although the molds 13 to 1h are configured to rotate according to
A member is provided above the turntable 14 to support the substrate 3 holding the components a to 1h, and the substrate 3 and the turntable 1 are connected to each other.
4 may be configured to rotate together with the central support 2.

In this case, there is no need to rotate the gutter, so the gear 6B, pinion 9, and bridge movement mechanism 10 are not required.

In the above-mentioned embodiment, when the gutter 5 is rotated, there is a risk that the molten metal flowing down from the distributor 8 will fall on the upper surface of the mold wall or between the molds and become solidified. As shown in Figure 3, an inverted V-shaped guide piece 20 is passed between the adjacent molds 1a and Ib, and the gutter 5 is connected to the mold 1a.
The molten metal flows down along the guide piece 20 until it rotates from the upper position to the upper position of the mold 1b.
It is desirable to configure the structure so that it flows inward.

As described above, according to the apparatus of the present invention, the molds are sequentially moved to sequentially cast ingots such as slabs of a predetermined length, and the cast ingots of a predetermined length are sequentially carried out from a predetermined carry-out position. can be done.

Therefore, according to the device of the present invention, unlike conventional so-called semi-continuous casting devices, there is no need to remove the mold or gutter every time an ingot of a predetermined length is finished casting, and work efficiency is greatly improved. At the same time, there are no problems such as coagulation of the tap due to the stoppage of tap water, and there is no need for a cutting device, which is essential for fully continuous casting equipment, so equipment costs and operating costs are relatively low. can get.

[Brief explanation of drawings]

FIG. 1 is a partial longitudinal sectional front view of an embodiment of the device of the present invention, and FIG.
The figure is a plan view taken along line n-l in FIG. 1, and FIG. 3 is a schematic exploded perspective view of the mold with the roof piece placed over the frame. 1a to 1h...Mold, 5...Gutter, 11
. . . Pulling down device, 16 . . . Rotation drive mechanism, 18 . . . Unloading mechanism.

Claims (1)

[Claims] 1 A plurality of continuous casting molds are arranged in a ring on the same horizontal plane, and a gutter for pouring molten metal into an appropriate number of molds is arranged above an appropriate number of molds, which is less than half of these molds. Further, below each of the molds, there is provided a pull-down device that receives and descends the ingot cast by each mold, and the molds and pull-down device are simultaneously arranged with the center of arrangement of these molds as an axis. A rotary drive mechanism is attached to rotate the ingot in the same direction, and at a position corresponding to the mold at a predetermined position other than the position where the metal is poured by the gutter, the ingot cast to a predetermined length by the mold is removed. A continuous ingot manufacturing device equipped with a transport mechanism for transporting ingots.