JPH07115158B2 - Melting furnace gutter transfer device - Google Patents

Description

The present invention relates to a gutter moving device for moving a gutter in a melting furnace in which a gutter is provided between a furnace body and a tundish.

[Conventional technology]

Conventionally, as a melting furnace of this type, the molten metal contained in the furnace body is discharged from the furnace body by tilting the furnace body, and the molten metal is received by a gutter and guided to a tundish below the gutter, and It is known that a tundish is poured into a mold below the tundish and cooled in the mold to produce an ingot.

[Problems to be Solved by the Invention] In the above-described conventional melting furnace, since there was no technique for moving the gutter, the molten metal was melted at the initial stage of tilting the furnace body and discharging the molten metal from the furnace body. From the body through the gutter,
While being introduced into the mold through the tundish, the temperature of the molten metal may be lowered, which may adversely affect the quality of the manufactured ingot. In addition, in the final stage of discharging the molten metal, the molten metal is likely to remain in the gutter, and it is difficult to smoothly discharge all the molten metal through the gutter. Further, in the stage of preparation for casting, there was a problem that the gutter interfered and a sufficient space for preparing the tundish and the mold could not be secured, which made the work difficult and the workability was poor.

The present invention has been made in view of the above circumstances, and its purpose is to suppress the temperature decrease of the molten metal as much as possible in the initial stage of discharging the molten metal from the furnace body, and in the final stage of discharging the molten metal, It is an object of the present invention to provide a gutter moving device for a melting furnace, which can prevent the molten metal remaining in the gutter and can secure a sufficient space for preparing the tundish and the mold in the stage of preparation for casting.

[Means for Solving the Problems]

The present invention for achieving the above object is a gutter moving device of a melting furnace which is provided between a furnace body and a tundish, and which moves a gutter for supplying the molten metal in the furnace body to a tundish, A gutter is provided on the frame so as to be rotatable in the vertical direction, and on the frame, a storage position for temporarily storing the melt supplied from the furnace body and a discharge position for discharging the melt to the tundish. And a rotation mechanism for rotating the same between the two.

Further, the frame is a moving frame provided on a gantry so as to be linearly movable in a direction orthogonal to a flowing direction of the molten metal in the gutter, and the frame is mounted on the gantry, and the gutter is above the tundish. A linear movement mechanism for linearly moving the casting position between the casting position and the retreat position retracting to the side of the tundish is provided.

[Action]

In the invention according to claim 1, at the time of casting, first, the gutter is rotated in the vertical direction with respect to the frame by the rotating mechanism,
By holding the molten metal in the storage position, the molten metal is stored in the gutter at the initial stage of discharging the molten metal from the furnace body. Here, by rotating the gutter to the discharge position by the rotating mechanism,
The accumulated molten metal is flowed to the tundish side at once to suppress the temperature drop of the molten metal, and the molten metal is sequentially supplied from the furnace body into the gutter, and at the final stage of discharging the molten metal, all the molten metal in the gutter is tundish. Drain to the side.

In the invention of claim 2, during casting, the gutter is linearly moved frame by frame by the linear movement mechanism in a direction orthogonal to the direction in which the molten metal flows, and is positioned above the tundish. In the preparation stage of the next casting process, the gutter is linearly moved frame by frame by the linear movement mechanism and is retracted to the side evacuation position of the tundish. This allows
Ensure a sufficient working space for maintenance and inspection of the tundish and mold.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS.

In these drawings, reference numeral 1 is a gutter, and the molten metal passage inside the gutter 1 has a deep bottom at its base end, a shallow bottom at an intermediate part, and a depth toward the tip. Inclined downward. The tip of the molten metal passage of the gutter 1 is bifurcated, a tundish 2 is installed below the tip of the gutter 1, and a mold is installed below the tundish 2. Further, a furnace body 3 is tiltably installed above the base end portion of the gutter 1.

A pair of support shafts 4 are projectingly provided on both sides of the tip of the gutter 1, and these support shafts 4 are supported by a hook-shaped support portion 5a formed at the tip of a substantially V-shaped support arm 5. Has been done. A rotary shaft 6 is attached to the base end of each of the support arms 5, and the rotary shaft 6 has a moving frame 7 of a rectangular tube shape.
It is rotatably attached to. A link member 8 is attached to one end of the rotary shaft 6, and a piston rod of a rotating cylinder 10 attached to a side portion of the moving frame 7 via a bracket 9 is rotatable on the link member 8. Are linked to.

A pair of bearing shafts 11 are provided on both sides of the base end of the gutter 1 in a protruding manner, and these bearing shafts 11 are provided in a V-shaped receiving portion 12a formed at the upper end of a U-shaped lifting arm 12. It is supported.
The elevating arm 12 is supported by a guide roller 14 rotatably installed on the moving frame 7 via a bracket 13 so as to be movable in the vertical direction. A piston rod of an ascending / descending cylinder 16 mounted via a bracket 15 is connected to the lower part of 7.

The moving frame 7 includes a support roller 18 provided on the pedestal 17, a guide mechanism 21 also provided on the pedestal 17 and including two upper and lower support rollers 19 and two left and right guide rollers 20. It is arranged so as to be movable in the horizontal direction. Then, at the base end of the moving frame 7,
The piston rod of the electric power cylinder 22 is connected.

In the melting furnace incorporating the gutter moving device configured as described above, first, the moving frame 7 is moved to the supporting roller 18 and the rollers 19 and 2 of the guide mechanism 21 by the power cylinder 22.
By advancing along 0, the gutter 1 is positioned at the casting position above the tundish 2 (see the state of FIGS. 1 and 2). Discharge the molten metal in the furnace body 3,
When supplying into the mold through the tundish 2, the piston rod of the rotating cylinder 10 is moved forward and the rotating shaft 6 is rotated counterclockwise in FIG. 1 through the link member 8. The support arm 5 is rotated counterclockwise about the rotary shaft 6 to lift the tip of the support arm 5 and raise the tip of the gutter 1 via the support shaft 4, and the piston of the lifting cylinder 16 The rod is retracted, the lifting arm 12 is lowered along the guide roller 14, and the support shaft 11
Is installed at the lower end. As a result, the gutter 1 is in a state of a storage position in which the tip portion is lifted upward, and in this state, when the molten metal is discharged from the furnace body 3 to the base end portion of the gutter 1 by tilting the furnace body 3, the molten metal is temporarily It collects inside the base end of the gutter 1,
The temperature drop of the molten metal is suppressed.

Then, the piston rod of the rotating cylinder 10 is retracted, and the rotary shaft 6 is moved through the link member 8 in FIG.
The support arm 5 is rotated in the clockwise direction to lower the tip of the support arm 5, and the tip of the gutter 1 is lowered via the support shaft 4 so that the gutter 1 is at the discharge position in a horizontal state. To As a result, the molten metal accumulated at the base end portion of the gutter 1 is discharged all at once from the tip portion, and the molten metal is sequentially supplied from the furnace body 3 into the gutter 1 to remove the tundish 2 from the tip of the gutter 1. The molten metal is smoothly introduced into the mold via the.

Then, when the discharge of the molten metal from the furnace body 1 is completed, the piston rod of the lifting cylinder 16 is advanced, the lifting arm 12 is raised along the guide roller 14, and the base end of the gutter 1 via the bearing shaft 11. Lift the section. As a result, all the molten metal remaining inside the base end of the gutter 1 is accommodated in the mold via the tundish 2 discharged from the gutter 1. In this way, a homogeneous molten metal can be smoothly supplied into the mold, and the quality of the manufactured ingot can be improved.

When the supply of the molten metal from the furnace body 3 is completed, the power cylinder 22 causes the moving frame 7 to move to the supporting roller.
The gutter 1 is retracted from above the tundish 2 to a lateral retreat position by retracting along the rollers 19 and 20 of the guide mechanism 21 and the guide mechanism 21. Ensure sufficient work space for maintenance and inspections and improve workability.

As is clear from the above description, the rotating cylinder 10, the link member 8, the rotating shaft 6, the supporting arm 5 and the like constitute a rotating mechanism, and the power cylinder 22, the supporting roller 18, the guide mechanism 21 and the like linearly move. The mechanism is configured.

〔The invention's effect〕

Since the present invention is configured as described above,
The following effects are achieved.

In the invention described in claim 1, in the initial stage of discharging the molten metal from the furnace body, the molten metal can be flowed all at once to the tundish side while the molten metal is stored in the gutter, and the temperature decrease of the molten metal can be suppressed. Also, it is possible to supply the molten metal from the furnace body to the gutter one by one, and at the final stage of discharging the molten metal, all the molten metal in the gutter can be discharged to the tundish side, and the molten metal remaining in the gutter can be prevented. .

In addition to the above effects, the invention according to claim 2 can sufficiently secure a work space for maintenance and inspection of the tundish and the mold performed as a preparatory step of the casting process, and the maintenance workability is improved.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention,
1 is a side view, FIG. 2 is a plan view, and FIG. 3 is a front view. 1 …… gutter, 2… tundish, 3 …… furnace body, 10 ……
Rotating cylinder, 16 ... Lifting cylinder, 17 ... Stand, 22 ...
… Power cylinder

Claims (2)

[Claims] 1. A device provided between a furnace body and a tundish,
And a gutter moving device of the melting furnace for moving the gutter supplying the molten metal in the furnace body to the tundish, the gutter is provided on a frame rotatably in the vertical direction, the frame, the gutter, A rotating mechanism for rotating the molten metal supplied from the furnace body between a storage position for temporarily storing the molten metal and a discharging position for discharging the molten metal to the tundish is provided. Gutter transfer device for melting furnace. 2. The frame is a moving frame provided on a gantry so as to be linearly movable in a horizontal direction orthogonal to a flowing direction of molten metal in the gutter, and the gantry is provided with the moving frame. A linear movement mechanism for linearly moving between a casting position located above the tundish and a retreat position where the gutter retracts to the side of the tundish. 1. The gutter moving device of the melting furnace according to 1.