JP6649905B2 - Ladle for molten metal - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a ladle for a molten metal, which is a container in which a molten metal obtained by melting a metal is stored and in which a molten metal such as metal magnesium is inserted to process the stored molten metal.

  2. Description of the Related Art Conventionally, a ladle, which is a container for storing a molten metal obtained by melting the metal, has been used to transport or perform component adjustment processing.

  For example, Patent Literature 1 discloses a ladle for a molten metal in a cylindrical container shape that opens upward to store the molten metal therein.

JP-A-2006-137501

  However, in the ladle for molten metal of patent document 1, since the width of the inside and the outside at the upper end of the standing wall which contacts with the lid for ladle has a thickness of 80 to 100 mm, the ladle lid is provided on the ladle for molten metal. When a metal wire, such as magnesium metal, is inserted into the molten metal and component adjustment processing is performed, the molten metal scatters due to the intense reaction caused by the contact between the metal wire and the molten metal. Molten metal may adhere between the upper end of the wall and the lower surface of the ladle lid flange.Furthermore, the molten metal scattered by using the ladle gradually accumulates on the upper end of the ladle standing wall, etc. As a result, when the ladle lid is attached to the molten metal ladle, a gap may be formed and the molten metal may leak to the outside.

  Accordingly, the present invention provides a method for adjusting the components by attaching a lid to a ladle for molten metal and inserting a metal wire such as metallic magnesium into the molten metal to perform a component adjustment process. Even if it is scattered, the adhesion of the molten metal between the upper end of the standing wall of the ladle and the lower surface of the flange of the lid is reduced. It is an object of the present invention to significantly reduce the possibility that a molten metal leaks to the outside by making it difficult for a gap to be generated when a metal is attached.

[1] That is, the present invention includes a ladle main body that accommodates a molten metal therein, and a lid that covers an opening of the ladle main body, and an upper end of the ladle main body on the opening side is separable. , and the in upright walls of the ladle body, the width of the upper end of the opening side Ri length der of 1～70Mm, 10 to 30 degrees inner surface of the molten metal side of the upper end to the outer surface And the lid has a sealing material that is in contact with the upper end of the ladle main body, and the width of the upper end on the opening side is smaller than the cross-sectional diameter of the sealing material. It is a ladle for molten metal.

  According to the invention described in the above [1], when the ladle lid is attached to the molten metal ladle and a metal wire such as metal magnesium is inserted into the molten metal to perform a component adjustment process, contact between the metal wire and the molten metal is performed. Even if the molten metal scatters due to the violent reaction caused by the molten metal, it is possible to reduce the adhesion of the molten metal between the upper end of the standing wall of the ladle and the lower surface of the flange of the ladle lid, and even if the molten metal is used for many years When the ladle lid is attached to the ladle, a gap is less likely to be generated, and leakage of the molten metal to the outside can be significantly reduced. In addition, when the molten metal is poured into an empty ladle main body, it is possible to reduce the possibility that the molten metal splashes and adheres to the upper end of the ladle main body.

According to the invention described in the above [ 1 ], even if the molten metal scatters and accumulates on the upper end of the standing wall of the ladle, or is broken such that the upper end is chipped, the opening in the ladle body is further formed. By replacing the upper end on the side with a new equivalent member, it is possible to prevent the molten metal from leaking to the outside without forming a gap when the ladle lid is attached to the molten metal ladle even when used for many years.

According to the invention described in the above [ 1 ], furthermore, the molten metal scattered by bringing the ladle body and the lid into close contact with each other by the upper end of the ladle body being in contact with the sealing material, and thereby the upper end of the standing wall of the ladle. Can be reduced.

According to the invention described in the above [ 1 ], the sealing material covers the upper end of the ladle main body, so that the scattered molten metal can be prevented from attaching to the upper end of the standing wall of the ladle. Further, the pressure at which the upper end of the rising wall comes into contact with the sealing material increases, and the degree of close contact between the ladle body and the lid can be further increased.

It is a top view of the ladle for molten metal of the present invention. It is a top view in the state where the lid was removed in the ladle for molten metal of the present invention. It is AA line sectional drawing in the ladle for molten metal of this invention. It is an alpha section enlarged view in the ladle for molten metal of the present invention. It is an exploded front view of the ladle for molten metal of the present invention.

  Hereinafter, embodiments of the ladle for molten metal according to the present invention will be described in detail with reference to the accompanying drawings. Note that the embodiments described below are preferred specific examples for carrying out the present invention, and thus various technical limitations are made. However, the present invention is not limited to the particulars in the following description. It is not limited to this form unless otherwise specified. Further, the vertical direction in the description is the vertical direction in FIG. 3 shown in a cross-sectional view. The expression indicating the numerical range includes the upper limit and the lower limit.

  As shown in FIGS. 1 to 5, the ladle for molten metal according to the present invention has a lid that covers a ladle main body 1 that accommodates a molten metal therein and an opening 13 that opens upward from the ladle main body 1. The body 2 is provided.

  The ladle main body 1 is composed of an upper end 11 and a ladle base 12, and a base standing wall of the ladle base 12 is provided above a container-shaped ladle base 12 that opens upward and stores molten metal therein. An annular upper end 11 having an upper end standing wall 111 as a peripheral wall is fixedly provided so as to extend from 121. The opening 13 is formed integrally with the opening of the upper end 11 and the opening of the ladle base 12, and the molten metal 5 is put into the ladle main body 1 from the opening 13. The upper end 11 and the ladle base 12 are formed by a plate-shaped upper end fixing flange 15 projecting outward from the upper end 11 and a plate-shaped ladle base fixing flange 16 projecting outward from the ladle base 12. They are integrated by being fixed to a through-hole formed in them so as to communicate with the through-hole and through a fixture 4 composed of screws and bolts. Further, an annular gasket G having heat resistance or the like may be disposed between the upper end portion 11 and the ladle base portion 12 to improve the hermeticity between the upper end portion 11 and the ladle base portion 12. In addition, in this embodiment, the ladle main body 1 is separable into the upper end part 11 and the ladle base 12, but in other embodiment, the upper end part 11 and the ladle base 12 cannot be separated and are continuously integrated. It can be a thing.

  As described above, the upper end portion 11 is an annular member having the upper end standing wall 111 as a peripheral wall so as to extend from the base standing wall 121 of the ladle base 12, and a part of the lid 2. It is a member that abuts. The upper end portion 11 has an inclined shape in which the width continuously decreases from the lower side toward the upper end 14 which is the upper end, and it is preferably 1 to 70 mm at the upper end 14, and 1.5 to 70 mm. More preferably, it is 50 mm, most preferably 2 to 30 mm. When the width of the upper end 14 is within this range, it can be manufactured while having durability in long-term use. When a metal wire such as metal magnesium is inserted into the molten metal 5 to perform a component adjustment process, Even if the molten metal 5 is scattered due to a violent reaction due to contact between the wire and the molten metal 5, the molten metal 5 adheres between the upper end 14 of the upper end standing wall 111 of the upper end 11 and the lower surface of the flange 22 of the lid 2. In addition, even when the lid 2 is attached to the ladle main body 1 even when used for many years, a gap is less likely to be generated, and leakage of the molten metal 5 to the outside can be greatly reduced.

  Further, since the inner surface of the upper end portion 11 on the side of the molten metal 5 is inclined at an angle of 10 to 30 degrees with respect to the outer surface, the scattered molten metal 5 falls along the inclined surface into the molten metal 5 stored therein. I do. In addition, when the upper end 11 is damaged such as when a part of the upper end 14 of the upper end 11 is chipped or the like, the upper end 11 can be replaced with a new upper end 11 and the ladle base 12 can be continuously used. Compared to a single unit in which the ladle base 11 and the ladle base 12 cannot be separated, the cost is reduced, and even when used for many years, there is no gap when the lid 2 is attached to the ladle body 1 and the molten metal 5 Can be prevented from leaking to the outside.

  An upper end standing wall 111 of the upper end portion 11 has a plate-shaped upper end exterior portion 112 located on the outside, and an upper end fireproof portion 113 located on the inside and in contact with the scattered molten metal 5. The upper end portion 112 is preferably made of a material having strength and fire resistance, such as metal. In addition, since the upper end refractory portion 113 is in direct contact with the molten metal 5, inorganic compounds such as silica, zirconia, clay, and alumina having excellent fire resistance, heat resistance, corrosion resistance, and the like such as fire bricks and fire insulation bricks are used. It is preferable that the material is mainly used.

  Further, the vertical height of the upper end portion 11 is preferably 5 to 30%, more preferably 10 to 20% of the vertical height of the ladle main body 1. When the height of the upper end 11 in the vertical direction is within this range, the upper end 11 can be easily replaced when the upper end 14 is partially broken or the upper end 14 is broken, and the molten metal 5 can be easily replaced. Leakage and the like can be prevented because the joint does not come into contact with the joint between the part 11 and the ladle base 12.

  Four plate-like upper end fixing flanges 15 are provided below the upper end 11 so as to project outward, and are provided at equal intervals. Depending on the number, a plurality other than four can be provided.

  The ladle base 12 is a container-shaped member that opens upward and stores the molten metal therein, as described above, and is a main part of the ladle main body 1. The ladle base 12 is provided with a base standing wall 121 having a predetermined thickness on the outer periphery, and stores the molten metal 5 inside thereof. A discharge port 125 communicating with the inside of the ladle base 12 through a communication hole 124 and discharging the molten metal 5 to the outside is formed on the outer side surface of the base standing wall 121 in a substantially triangular shape.

  The base standing wall 121 of the ladle base 12 has a plate-shaped base exterior part 122 located outside and a base fireproof part 123 located inside and in contact with the molten metal 5. The base exterior part 122 is preferably made of a material having strength and fire resistance, such as metal. The base refractory portion 123 is mainly made of inorganic compounds such as silica, zirconia, clay, and alumina having excellent fire resistance, heat resistance, corrosion resistance, and the like such as fire bricks and fire insulation bricks, because they directly contact the molten metal 5. Preferably, the material is

  Four plate-shaped ladle base fixing flanges 16 are provided at equal intervals on the upper side of the ladle base 12 so as to protrude outward. Depending on the number, a plurality other than four can be provided.

The lid 2 is a member that covers the opening 13 of the ladle main body 1. The lid 2 has a box-shaped lid base 21 having a space S toward the opening 13, and the outer periphery of the lid base 21 faces outward. The protruding flange 22 is provided. Since the lid base 21 has the space S inside, when the metal wire is added to the molten metal 5 in the ladle main body 1, a reaction occurs violently, and even if the pressure increases suddenly, the air in the space S is removed. The force for pushing up the lid 2 by buffering can be reduced.

  On the lower surface of the flange portion 22, an annular groove portion 23 that is depressed upward is provided. The groove portion 23 is provided with a diameter substantially equal to the upper end 14 of the ladle main body 1, and a flexible sealing material 3 that can be deformed by stress so as to fill the groove portion 23 is fitted. Since the sealing material 3 is in close contact with the upper end 14 of the ladle main body 1, the sealing material 3 prevents the ladle main body 1 and the lid 2 from spouting and leaking to the outside. In the present embodiment, the flange portion 22 has a rectangular shape, but may have a polygonal shape such as a pentagonal shape, or may have a circular or elliptical shape.

  The lid 2 has a plate-shaped lid exterior part 24 located on the outside and a lid refractory part 25 located on the inside and capable of contacting the molten metal 5. The lid exterior part 24 is preferably made of a material having strength and fire resistance, such as metal. In addition, since the lid refractory portion 25 can come into direct contact with the molten metal 5, inorganic compounds such as silica, zirconia, clay, and alumina having excellent fire resistance, heat resistance, corrosion resistance, and the like such as fire bricks and fire insulation bricks. It is preferably a material mainly composed of

In order to add the metal wire to the molten metal 5 in the ladle base 12, an inner space S and the outside communicate with the inner space S on the upper surface of the lid base 21, and a substantially cylindrical insertion opening 26 is protrudingly provided. In the present embodiment, two insertion ports 26 are provided, but in other embodiments, one or three or more insertion holes may be provided.

  The sealing material 3 is a flexible member that fits into a flange 22 protruding outward from the outer periphery of the lid 2 and a groove 23 provided on the ladle body 1 side of the flange 22. . As described above, the sealing material 3 can be tightly attached to the upper end 14 of the ladle main body 1 to prevent the ladle main body 1 and the lid 2 from being spouted and leaked to the outside. As shown in FIG. 3, since the width of the upper end 14 on the opening 13 side is smaller than the cross-sectional diameter of the seal material 3 along the vertical direction, the pressure at which the upper end 14 contacts the seal material 3 is reduced. As a result, the degree of adhesion between the upper end portion 11 of the ladle main body 1 and the flange portion 22 of the lid 2 can be increased to prevent the molten metal 5 from leaking. Preferably, the sealing material 3 is made of a material having flexibility, fire resistance and heat resistance, such as a ceramic fiber which does not melt even when it comes into contact with the molten metal 5. In the present embodiment, the sealing material is provided in the groove 23 provided in the flange 22. In other embodiments, the sealing material is provided on the lower surface of the lid facing the upper end 14 of the ladle main body 1. You may. Furthermore, in the present embodiment, the sealing material 3 is annular, but can be formed into various shapes according to the shape of the upper end 14 of the ladle main body 1. Further, although the cross-sectional shape is circular, the shape is elliptical or polygonal. It can also be. When the cross-sectional shape is an elliptical shape or a polygonal shape, the diameter that becomes the maximum as the cross-sectional diameter is measured.

  The side surface of the lid base 21 has an exhaust port 27 that opens upward and communicates with the internal space S and the outside, and is bent upward. By the exhaust port 27, when the metal wire is added to the molten metal 5, the vapor or the like derived from the metal wire generated by the reaction between the metal wire and the molten metal can be released to the outside so that the internal pressure is not excessively increased. Further, since the exhaust port 27 is bent, even when the metal wire and the molten metal 5 react with each other when the metal wire is added to the molten metal 5 and the molten metal 5 is scattered, somewhere inside the exhaust port 27. Since it does not collide with and spill out straight to the outside, the loss of the molten metal 5 can be suppressed, and the safety for workers can be enhanced. In the present embodiment, the exhaust port 27 is bent in a substantially “C” shape. However, in other embodiments, the exhaust port 27 can be bent in an L shape, a J shape, or the like. It is also possible to use a non-bent straight line having a length such that the melt 5 does not blow out.

  The metal wire is a linear metal that adjusts components and the like of the molten metal 5. For example, as a component, a material containing calcium and silicon for deoxidation, and calcium and aluminum for desulfurization are used for steel. A contained material can be used. A material containing sulfur for stabilizing the molten steel component and a material containing carbon for finely adjusting the smelting component can also be used. Further, for cast iron, a material containing magnesium, silicon, iron or the like can be used for desulfurization or spheroidization. The metal wire is preferably used by coating these materials with a metal such as a thin steel plate. The metal wires can be used alone or in combination of two or more depending on the purpose.

DESCRIPTION OF SYMBOLS 1 ... Ladle main body 11 ... Upper part 111 ... Upper part standing wall 112 ... Upper part exterior part 113 ... Upper part fireproof part 12 ... Ladle base 121 ... Base Standing wall 122 ... base exterior part 123 ... base refractory part 124 ... communication hole 125 ... discharge port 13 ... opening 14 ... upper end 15 ... upper end fixing flange 16 ... Ladle base fixing flange 2 Lid 21 Lid base 22 Flange 23 Groove 24 Lid outer part 25 Lid fireproof part 26 ... Insert port 27 ... Exhaust port 3 ... Seal part 4 ... Fixer 5 ... Molten metal S ... Space G ... Gasket

Claims (1)

A ladle body that contains the molten metal therein, and a lid that covers an opening of the ladle body,
The upper end of the ladle body on the side of the opening is separable,
In upright wall of the ladle body, the width of the upper end of the opening side Ri length der of 1～70Mm,
The inner surface on the melt side of the upper end is inclined at an angle of 10 to 30 degrees with respect to the outer surface,
The lid has a sealing material that contacts the upper end of the ladle body,
A ladle for a molten metal , wherein a width of an upper end on the opening side is smaller than a cross-sectional diameter of the sealing material .

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