JP3006660B2 - Pouring trough - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pouring trough for casting molten metal into a mold.

[0002]

2. Description of the Related Art An example of a conventional facility for centrifugally casting a cast iron tube using a pouring trough is shown in FIG. 2 and FIG.
This will be described with reference to a partially enlarged view.

The pouring trough 1 guides the molten metal S poured from the triangular ladle 2 into the rotary mold 4 on the movable casting cart 3, and a chute 5 into which the molten metal S is poured from the triangular ladle 2, The molten metal S poured into the chute 5 is transferred to the rotating mold 4
It comprises a trough main body 6 to be guided into the inside, and a trough cart 8 on which the trough main body 6 is placed and which moves on a rail 7 laid on a constant slope M. During casting, the trough body 6 is moved by the trough truck 8 in the direction of the arrow X from the casting start position indicated by the solid line to the casting end position indicated by the two-dot chain line. The chute 5 is for pouring the molten metal S from the triangular ladle 2 into the trough main body 6 with momentum. Further, the movable casting cart 3 moves on the rail 7. Further, the triangular ladle 2 and the chute 5 are fixed to a work platform K provided on the slope M.

At the time of casting, first, the molten metal S is transported from a blast furnace (not shown) by a ladle 9 and temporarily stored in a stationary ladle 10 on a work table K. This molten metal is transferred to the triangular ladle 2, and the trough body 6 is inserted into the rotary mold 4 by the trough truck 8 to the casting start position, and the rotary mold 4 is rotated. From this state, the molten metal S for one cast iron pipe is poured from the triangular ladle 2 to the chute 5 while moving the trough body 6 from the trough cart 8 in the arrow X direction (while pulling out), and passes through the trough body 6. It is poured into the rotary mold 4 and cast.

The trough main body 6 includes a main body (gutter) 11 having a V-shaped cross section of a guide surface for guiding the molten metal S, as shown in FIG. A pair of hermetically sealed water cooling jackets 12a and 12b for flowing cooling water on substantially both sides of the main body 11 along the cross section of the main body 11 are provided. In addition, a concave portion 13 is formed on the outer surface of the bottom of the main body 11. The recess 13 is provided between the trough main body 6 and the rotating mold 4.
An additive supply pipe (not shown) for supplying an additive into the mold 4 is provided immediately before the molten metal S is supplied into the mold.

The water cooling jackets 12a and 12b are provided with covers 14a and 14b having an arc-shaped cross section which cover the outer sides of both sides of the main body 11 in the longitudinal direction of the trough main body 6, and the trough main body 1
, Consisting of copper cooling water supply pipes 15a and 15b inserted from the base end side (chute 5 side) of the trough body 6 at the end side (rotary mold 4 side) of the trough body 6 is sealed, and the base end side is cooled. It is connected to a water discharge port (not shown). The cooling water supply pipes 15a and 15b extend inside the water cooling jackets 12a and 12b in the longitudinal direction of the trough main body 6, and are opened at the tip of the trough main body 6. Therefore, the cooling water is supplied to the cooling water supply pipe 15
The water flows into the water cooling jackets 12a and 12b from the distal end of the trough main body 6 by a and 15b, flows into the water cooling jackets 12a and 12b to the proximal side, and is discharged from the cooling water outlet on the proximal side. The main body 11 is cooled by the water-cooled jackets 12a and 12b, so that seizure and melting of the main body 11 are prevented.

[0007]

However, in the main body 11 of the conventional trough main body 6, the cross-sectional shape of the molten metal guide surface is V
Due to the letter shape, when the molten metal S transfers from the chute 5 to the trough main body 11, there is a problem that the molten metal S is scattered. That is, when the molten metal S falls from a certain height on the guide surface of the main body portion 11 when moving from the chute 5 to the trough main body 11, the molten metal S tends to flow upward along the side surface of the guide surface of the main body portion 11. As indicated by the arrow in FIG.
Scattered from the side surface of the device, and as a result, there was a problem that the high-temperature molten metal S adhered to surrounding devices, and these devices were damaged.

An object of the present invention is to solve such a problem, and an object of the present invention is to provide a pouring trough in which the molten metal is prevented from scattering when the molten metal moves from the chute to the trough body.

[0009]

To achieve the above object, a pouring trough according to the present invention comprises a chute into which a molten metal is poured and a molten metal poured into the chute while moving in the mold, is guided into a rotary mold. A pouring trough comprising a trough body having a cooling jacket , wherein the cross-sectional shape of the guide surface of the molten metal of the trough body has a ring shape with an open top, and each upper end has a bent shape. Is what you do.

[0010]

According to this structure, when the molten metal moves from the chute to the trough main body, if the molten metal falls on the guide surface of the trough main body from a certain height, the molten metal flows along the guide surface in the direction of the rotating mold and the guide surface. Move upward along the side of the. At this time, the direction of movement of the molten metal that moves upward is changed to the center direction from the turn of the upper end, so that the molten metal is prevented from scattering from the side surface of the trough body.

[0011]

An embodiment of the present invention will be described below with reference to the drawings. The same components as those of the conventional example shown in FIGS. 2 to 4 are denoted by the same reference numerals, and description thereof is omitted.

FIG. 1 is a cross-sectional view of a trough body of a pouring trough according to an embodiment of the present invention. This cross section corresponds to the view taken along the line AA in FIG. As shown in the figure, the trough body 6 'of the pouring trough of the present invention has a cross-sectional shape of the molten metal guide surface 21 of the main body (gutter part) 11' in a ring shape with an open top,
Each of the upper ends 22a and 22b has an inverted shape. Also,
On both sides of the main body 11 ', the main body 11'
Are provided with a pair of hermetically sealed water cooling jackets 12a and 12b. Similarly, a concave portion in which an additive supply pipe (not shown) is arranged
13 'is formed on the outer surface of the bottom of the main body 11'.

According to the above configuration, when moving from the chute 5 to the trough main body 6 ', the molten metal S is transferred onto the guide surface of the main body 11'.
When it falls from a certain height on the guide surface 21, it flows along the guide surface 21 in the direction of the rotary mold 4, and moves upward along the side surface of the guide surface 21. At this time, the direction of movement of the molten metal S moving upward along the side surface of the guide surface 21 is changed to the center direction as shown by the arrow due to the return of the upper ends 22a and 22b. Therefore, it is possible to prevent the molten metal S from being scattered from the side surface of the trough body 6 ', and to prevent the scattered high-temperature molten metal S from adhering to surrounding devices and causing damage.

The main body 11 ′ is provided with a water-cooled jacket 12.
a, is cooled by 12b, seizure of the main body portion 11 ', that have melting damage is prevented.

[0015]

As described above, according to the present invention, the molten metal that falls from the fixed height on the guide surface of the trough body and moves upward along the side surface of the guide surface is moved by the return of the upper end. The direction is changed to the center direction, so that it is possible to prevent the molten metal from scattering from the side surface of the trough main body, and it is possible to prevent the molten high-temperature molten metal from adhering to surrounding devices and causing damage.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a trough body of a pouring trough according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of a casting facility provided with a conventional pouring trough.

FIG. 3 is an enlarged view of a portion G in FIG. 2;

FIG. 4 is a view as viewed in the direction of arrows AA in FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pouring trough 2 Triangular ladle 3 Casting trolley 4 Rotating mold 5 Chute 6 'Trough main body 11' Main part (gutter part) 11 '12a, 12b Water cooling jacket 13' Recess 14a, 14b Cover 15a, 15b Cooling water supply pipe 21 Guide surfaces 22a, 22b Upper end S Molten metal

Continuation of the front page (56) References JP-A-52-95536 (JP, A) JP-A-60-195155 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B22D 13 / Ten

Claims (1)

(57) [Claims] 1. A pouring trough comprising a chute into which a molten metal is poured , and a trough body having a cooling jacket for guiding the molten metal poured into the chute into a rotating mold while moving inside the mold. A pouring trough, wherein a cross-sectional shape of the guide surface of the molten metal of the main body is a ring shape with an open top, and each upper end is a bent shape.