CN201190170Y

CN201190170Y - Oval-shaped refining ladle

Info

Publication number: CN201190170Y
Application number: CNU2008200148193U
Authority: CN
Inventors: 王敏涛; 王臣; 左永光
Original assignee: LIAONING KAIRUI SPECIAL STEEL CO Ltd
Current assignee: LIAONING KAIRUI SPECIAL STEEL CO Ltd
Priority date: 2008-08-13
Filing date: 2008-08-13
Publication date: 2009-02-04
Anticipated expiration: 2018-08-13

Abstract

The utility model discloses an oval refining ladle, which comprises a ladle bottom, a ladle wall, an upper flange, a lower flange and two lifting lugs positioned at the outer side of the ladle wall, wherein, an argon blowing hole is arranged at the ladle bottom, the projection of the ladle bottom on a level surface presents a circular shape, the projection of the upper edge of the ladle body enclosed by the ladle wall on the level surface presents an oval concentric with the projection of the ladle bottom, the long axis of the oval is perpendicular to the axial lines of the two lifting lugs, the length of the long axis is larger than the diameter of the ladle bottom but less than the end surface distance between the two lifting lugs, and the oval ladle fully takes advantage of the space in a VD furnace or a VDO furnace, thus the holding capacity of the refining ladle is enlarged. Compared with the common reversed circular truncated cone shape refining ladle, when steel liquid with the identical volume is loaded, the height of the liquid level of the steel liquid is lowered, thereby the situation that the steel liquid in the refining ladle is sprayed out of the refining ladle when encrusting matter is removed through blowing the oxygen at the ladle bottom is prevented.

Description

Oval refining ladle

Technical field

The utility model relates to a kind of ladle, especially a kind of refining ladle of using in VD or VOD stove.

Background technology

Refining ladle is a kind of important associate member of VD stove or VOD stove, the most frequently used refining ladle all is a reverse frustoconic at present, be provided with two outstanding hangers at Bao Bishang, the refining ladle of this shape is subjected to the restriction of VD or VOD furnace interior circular space, make that the useful space of refining ladle splendid attire molten steel is little, the bag BOTTOM OXYGEN when going to be mingled with molten steel very easily splash go out ladle, there is potential safety hazard, and influence the purified effect, can't produce qualified high-quality steel, for overcoming this problem, usually adopt the containing quantity that reduces molten steel in the refining ladle, reduce the liquid level of molten steel in the refining ladle, reach and prevent that molten steel molten steel splash when the bag BOTTOM OXYGEN goes to be mingled with from going out refining ladle.

The utility model content

The technical problem that utility model will solve is: a kind of oval-shaped refining ladle is provided, this refining ladle is under the situation that does not change VD stove or VOD furnace structure, make full use of the useful space in VD stove or the VOD stove, increase the volume of refining ladle, reduce the height of molten steel liquid level, prevent that molten steel molten steel splash when the bag BOTTOM OXYGEN goes to be mingled with from going out refining ladle.

The technical scheme that the technical solution problem is adopted: a kind of oval refining ladle, comprise the end, bag wall, upper flange, lower flange and be positioned at two hangers that wrap the wall outside, the bag end, be provided with argon blowing hole, the bag end, is in the circle that is projected as of horizontal plane, on horizontal plane, be projected as and wrap projection concentric ellipse in the end by the upper edge of the inclusion that surrounds of bag wall, oval-shaped major axis is perpendicular to the axis of two hangers, and the length of described major axis is greater than bag end diameter and be not more than the distance of two hanger end faces.

As a further improvement on the present invention, be provided with two argon blowing holes at the bottom of described bag, these two argon blowing holes are that symmetric line is along the long axis direction symmetric arrangement with the ellipse short shaft of inclusion upper edge projection.

Beneficial effect: because the upper edge of having adopted the inclusion that the bag wall surrounds is projected as and wraps end projection concentric ellipse on horizontal plane, oval-shaped major axis is perpendicular to the axis of two hangers, the length of described major axis greater than the bag end diameter and be not more than two hanger end faces apart from this technical scheme, made full use of the space in VD or the VDO stove, increased the volume of refining ladle, compare with common reverse frustoconic refining ladle, when the molten steel of splendid attire equal volume, the liquid level of the molten steel that reduces prevents that the molten steel molten steel splash when the bag BOTTOM OXYGEN goes to be mingled with in the refining ladle from going out refining ladle; Owing to be provided with two argon blowing holes in the bag bottom, these two argon blowing holes are that symmetric line is along the long axis direction symmetric arrangement with the ellipse short shaft of inclusion upper edge projection, in the Argon whipping process, make molten steel temperature even like this, shortened the Argon churning time, and each element is evenly distributed in the steel, and the inclusion rank all keeps original level, has improved the quality of steel, save the energy simultaneously, reduced production cost.

Description of drawings

Fig. 1 is that refining ladle of the present utility model is inserted the vertical view among VD or the VOD

Fig. 2 is that refining ladle of the present utility model is inserted the diagrammatic cross-section among VD or the VOD

Embodiment

Below in conjunction with accompanying drawing the utility model is described in further detail:

Oval refining ladle of the present utility model is by the bag end (3), bag wall (5), upper flange (8), lower flange (9) and be positioned at two hangers (2) in bag wall (5) outside and the argon blowing hole (1) on the bag end (3) constitutes, the bag end (3) is in the circle that is projected as of horizontal plane, on horizontal plane, be projected as ellipse by the upper edge (11) of the inclusion that surrounds of bag wall, the circle that this projection oval and the bag end forms is concentric, oval-shaped major axis (7) is perpendicular to the axis (6) of two hangers, and the length of described major axis (7) is greater than the diameter of the bag end (3) and be not more than distance between two hangers (2) outer face.

Adopt oval refining ladle of the present utility model, more common reverse frustoconic ladle has increased volume, when oval refining ladle is inserted VD or VOD stove, dwindled and the two same furnace walls of hanger axis (6) vertical direction upper wrapping body (4) between distance, confiscate and utilized the interior remaining space of stove, therefore, under the situation that does not change VD or VOD stove, increased the volume of ladle, contained into the time, reduced the height of molten steel liquid level (10) with the molten steel of the same volume of common ladle when oval refining ladle, thereby avoided the splash when the bag BOTTOM OXYGEN goes to be mingled with of the molten steel in the refining ladle to go out refining ladle, eliminate potential safety hazard, simultaneously, improved the quality of steel.

As a kind of improvement of the present invention, (3) are provided with two argon blowing holes (1) at the bottom of described bag, and these two argon blowing holes (1) are the long axis of ellipse direction symmetric arrangement of symmetry axis along the projection formation of upper edge on horizontal plane of inclusion with the axis of two hangers (2).Because more common ladle has increased an argon blowing hole, adopt two argon blowing holes Argon and stirring simultaneously, make molten steel temperature more even, shortened the Argon churning time, and each element is evenly distributed in the steel, and the inclusion rank all keeps original level, has improved the quality of steel, save the energy simultaneously, reduced production cost.

Claims

1. oval refining ladle, comprise the end (3), bag wall (5), upper flange (8), lower flange (9) and be positioned at two hangers (2) that wrap the wall outside, the bag end, be provided with argon blowing hole (1), the bag end (3) is in the circle that is projected as of horizontal plane, it is characterized in that: on horizontal plane, being projected as and wrapping at the end the concentric ellipse of (3) projection by the upper edge (11) of the inclusion that surrounds of bag wall (5), oval-shaped major axis (7) is perpendicular to (6) axis of two hangers, and the length of described major axis (7) is greater than the bag end (3) diameter and be not more than the distance of two hanger end faces.

2. oval refining ladle according to claim 1 is characterized in that: (3) are provided with two argon blowing holes (1) at the bottom of described bag, and these two argon blowing holes (1) are that symmetric line is along major axis (7) direction symmetric arrangement with the ellipse short shaft of upper edge (11) projection of inclusion.