CN115921838A - Adjustable mold for tundish overflow port and using method thereof - Google Patents

Abstract

The invention provides an adjustable mould of a tundish overflow port and a using method thereof.A mould frame comprises a fence structure and a bottom plate arranged on the fence structure; the fence structure is provided with two first wall plates which are respectively attached to two side walls of an overflow port of the tundish; the inner side surface of one of the first wall plates is connected with a telescopic piece, and the telescopic piece drives the first wall plate to move between the two side walls. The pouring basket overflow port can be plugged by arranging the mold frame, so that the situation that a permanent layer of pouring material flows into the overflow port or the permanent layer of the pouring basket overflow port is irregular when the pouring material is demolded is avoided, and the follow-up finishing time is shortened. In addition, the first wall plate connected with the telescopic piece in a moving mode can adapt to tundish overflow ports with different specifications, and cost for increasing mold frames with different sizes is reduced.

Description

Adjustable mold for tundish overflow port and using method thereof

Technical Field

The invention relates to the technical field of metallurgical equipment, in particular to the technical field of adjustable molds of overflow ports of a tundish.

Background

With the increasing requirements for the quality of steel, various ladle refining technologies are developed, and the purpose is to improve the cleanliness and clean the molten steel. The molten steel refined outside the furnace can be said to be clean, but the molten steel is possibly polluted after being poured into a tundish. Therefore, the tundish cannot be regarded as a simple molten steel transition vessel, but rather as a continuous metallurgical reactor, and the measures taken in ladle refining can be transferred to the tundish to further purify the molten steel. For this purpose, the concept of tundish metallurgy is proposed, the tundish being a refractory vessel between the continuous casting ladle and the mould.

The existing tundish is provided with a lining structure, which generally consists of a heat insulation layer (made of light bricks or heat insulation materials), a permanent layer (made of clay bricks or castable materials) and a working lining (made of heat insulation, plate coating or dry materials). After the permanent layer reaches the service life, the permanent layer is required to be disassembled and cast again.

When the permanent layer is poured again, a mold is required to be used for supporting, the mold is arranged at an overflow port of the tundish for plugging, and the pouring material is prevented from flowing out; however, the sizes of the overflow ports of the conventional tundish are inconsistent, so that a temporary wood plate or foam is generally adopted to manufacture a mould according to the actual size, time and labor are easily wasted, and the labor efficiency is low; in addition, during pouring, as the pouring material has larger buoyancy when vibrated, the wood board or the foam model is easily extruded and deformed, so that the permanent layer of the overflow port is irregular after demoulding, the overflow port needs to be repaired again, the labor load is increased, and the operation time is long.

Disclosure of Invention

In view of the above disadvantages of the prior art, an object of the present invention is to provide an adjustable mold for an overflow port of a tundish and a method for using the same, which are used to solve the problems of time and labor waste and low working efficiency caused by the need of temporarily manufacturing a mold to block the overflow port, and deformation of the temporary mold in the prior art.

To achieve the above and other related objects, the present invention provides an adjustable mold for an overflow port of a tundish, comprising:

the mould frame comprises a fence structure and a bottom plate arranged on the fence structure; the fence structure is provided with two first wall plates which are respectively attached to two side walls of the overflow port of the tundish;

one of the first wall plates is connected with an expansion piece on the inner side surface, and the expansion piece drives the first wall plate to move between the two wall plates.

Preferably: the telescopic piece comprises a nut, two stop pieces and a screw rod; the two stop parts are arranged on the bottom plate, and the nut is arranged between the two stop parts; the screw rod is connected in the nut in a rotating mode, and one end of the screw rod is connected with the first wall plate through a connecting piece.

Preferably: the connecting piece is of an L-shaped structure, a panel of the L-shaped structure is fixedly connected with the screw rod, and two ends of the L-shaped structure are connected to the inner side of the first wall panel.

Preferably: a supporting plate is further arranged between the two first wall plates, and the supporting plate is rotatably connected with a screw rod.

Preferably: the movable first wall plate comprises a fixed plate and a movable plate; the fixed plate is fixed on the bottom plate, and the inner side of the movable plate is connected with the telescopic piece.

Preferably: the fixed plate is consistent with the working layer of the tundish in length, and the fixed plate is 150mm in length.

The use method of the adjustable die for the overflow port of the tundish comprises the adjustable die for the overflow port of the tundish, and comprises the following steps:

step one, arranging the adjustable mould at an overflow port of the tundish, and attaching the fixed first wall plate to one side wall of the overflow port of the tundish;

and step two, the nut is rotated to drive the screw rod to rotate and move, so that the first wall plate connected with the nut is moved to gradually close to the other side wall of the tundish overflow port on the same side.

Preferably: the moving stroke of the screw is 2-3 cm.

As mentioned above, the adjustable die for the overflow port of the tundish has the following beneficial effects:

the invention can block the overflow port of the tundish by arranging the mold frame, thereby avoiding the irregularity of the permanent layer of the overflow port of the tundish during demolding and reducing the subsequent finishing time. In addition, the first wall plate connected with the telescopic piece in a moving mode can adapt to tundish overflow ports with different specifications, and cost for increasing mold frames with different sizes is reduced.

Drawings

FIG. 1 shows a prior art tundish configuration;

FIG. 2 is an enlarged view of FIG. 1;

FIG. 3 is a schematic view of an adjustable mold for a tundish overflow port according to the present invention;

figure 4 shows a top view of an adjustable mold for a tundish overflow and a tundish overflow according to the invention.

Description of the element reference

01. Tundish overflow port

011. Side wall

1. Mold frame

11. Fence structure

111. First side wall

111a support plate

111b moving plate

111c fixing plate

112. Expansion piece

1121. Nut

1122. Stop piece

1123. Screw rod

113. Connecting piece

114. Second wall plate

12. Base plate

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

Please refer to fig. 1 to 4. It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure, and are not used for limiting the conditions that the present disclosure can be implemented, so that the present disclosure is not limited to the technical essence, and any structural modifications, ratio changes, or size adjustments should still fall within the scope of the present disclosure without affecting the efficacy and the achievable purpose of the present disclosure. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are used for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms may be changed or adjusted without substantial change in the technical content.

As shown in fig. 1, the present invention provides an adjustable mold for an overflow port of a tundish, comprising:

the mold comprises a mold frame 1, wherein the mold frame 1 comprises a fence structure 11 and a bottom plate 12 arranged on the fence structure 11; the fence structure 11 is provided with two first wall plates 111, and the two first wall plates 111 are respectively attached to two side walls 011 of the tundish overflow port 01;

the inner side of one of the first wall plates 111 is connected to a telescopic member 112, and the telescopic member 112 drives the first wall plate 111 to move between the two side walls 011.

According to the invention, the overflow port 01 of the tundish can be blocked by arranging the mold frame 1, so that the irregularity of a permanent layer of the overflow port 01 of the tundish during demolding is avoided, and the subsequent trimming time is reduced. In addition, the first wall plate 111 connected with the telescopic piece 112 in a moving mode can be suitable for tundish overflow ports 01 of different specifications, and cost for increasing the mould frames 1 of different sizes is reduced.

In order to be able to move the first wall 111 on one side; specifically, now, the expansion member 112 includes a nut 1121, two stoppers 1122, and a screw 1123; two stop members 1122 are provided on the base plate 12, and a nut 1121 is provided between the two stop members 1122; a screw 1123 is rotatably connected to the nut 1121, and one end of the screw 1123 is connected to the movable first wall plate 111 through a connecting member 113. Since the nut 1121 is disposed between the two stoppers 1122, when the nut 1121 rotates, the nut 1121 cannot move, so that the nut 1121 drives the screw 1123 therein to rotate and move.

If the screw 1123 is directly connected with the first wall plate 111, a nut component similar to a screw with an inclined opening needs to be added, so that the design requirement is increased, and the production efficiency is reduced; therefore, the connecting member 113 is now set to be an L-shaped structure, a face plate of the L-shaped structure is fixedly connected with a screw 1123, and two ends of the L-shaped structure are connected to the inner side of the first wall plate 111; thereby functioning to support the inclined first wall plate 111 by the L-shaped structure; and the L-shaped structure is simple to manufacture, and only two panels are required to be vertically connected.

In order to support the other end of the screw 1123 opposite to the connected first wall 111; now, a supporting plate 111a is further disposed between the two first wall plates 111, and the supporting plate 111a is rotatably connected with a screw 1123.

In order to level the permanent layer near the overflow 01 of the tundish, a second wall plate 114 is required to be arranged on the two first wall plates 111 of the enclosure structure 11, and the second wall plate 114 is a straight plate.

In order to reduce the mass of the first movable wall 111, it is now provided to cut a portion of this first wall 111 so that the first movable wall 111 is smaller than the other first wall 111. Thus, the movable first wall 111 includes a moving plate 111b and a fixed plate 111c, the moving plate 111b is connected to the telescopic member 112, and the fixed plate 111c and the second wall 114 are integrally formed.

As shown in fig. 4, the end of the tundish overflow 011 is generally perpendicular to the side wall of the cavity of the tundish 01; to accommodate this, the fixing plate 111c is now arranged perpendicular to the second wall plate 114. Similarly, the other end of the second wall plate 114 should be connected to a corresponding vertical plate 111d, so that the position of the adjustable mold can be conveniently matched with the overflow port 01 of the tundish. In addition, the length of the vertical section at the tail end of the tundish overflow port 011 is equal to the thickness of the tundish wall working layer, the thickness is marked as a, and the size is 150mm. Thus, the fixing plate 111c is provided to accommodate the thickness of the working layer, now defining a length of the fixing plate 111c of 150mm.

In addition, in order to avoid that the moving plate 111b extends too much, so that the pouring material enters the mold frame 1 of the adjustable mold; the moving stroke of the screw 1123 is now set to 2-3 cm.

In addition to the above examples, the present invention also has the following methods of use:

step one, arranging an adjustable mould at an overflow port 01 of a tundish, and attaching a fixed first wall plate 111 to one side wall of the overflow port 01 of the tundish; the first stationary wall 111 is used as a reference by step one.

And step two, the screw rod 1123 is driven to rotate and move by rotating the nut 1121, so that the first wall plate 111 connected with the screw rod is moved to gradually close to the other side wall of the tundish overflow port 01 at the same side. When the first fixed wall plate 111 is fixed as a reference, the movable plate 111b is moved to fix both side walls of the tundish overflow port 01, and the installation of the adjustable mold on the tundish overflow port 01 is completed.

In summary, the first wall plate 111 connected with the telescopic member 112 is moved, so that the tundish overflow ports 01 with different specifications can be adapted, and the cost for increasing the mold frames 1 with different sizes is reduced; in addition, the fine adjustment of the moving plate 111b can be realized through the fine adjustment of the nut 1121, the travel of the screw 1123 is limited, and pouring materials are prevented from entering an adjustable mold.

Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (8)

1. The utility model provides an adjustable mould of middle package overflow mouth which characterized in that includes:

the mould frame comprises a fence structure and a bottom plate arranged on the fence structure; the fence structure is provided with two first wall plates which are respectively attached to two side walls of the overflow port of the tundish;

the inner side face of one of the first wall plates is connected with an expansion piece, and the expansion piece drives the first wall plate to move between the two side walls.

2. The adjustable die for the overflow port of a tundish according to claim 1, wherein: the telescopic piece comprises a nut, two stop pieces and a screw rod; the two stop parts are arranged on the bottom plate, and the nut is arranged between the two stop parts; the screw rod is connected in the nut in a rotating mode, and one end of the screw rod is connected with the first wall plate through a connecting piece.

3. The adjustable mold for the overflow of a tundish according to claim 1, wherein: the connecting piece is of an L-shaped structure, a panel of the L-shaped structure is fixedly connected with the screw rod, and two ends of the L-shaped structure are connected to the inner side of the first wall panel.

4. The adjustable die for the overflow port of a tundish according to claim 1, wherein: a supporting plate is further arranged between the two first wall plates, and the supporting plate is rotatably connected with the screw rod.

5. The adjustable die for the overflow port of a tundish according to claim 1, wherein: the movable first wall plate comprises a fixed plate and a movable plate; the fixed plate is fixed on the bottom plate, and the inner side of the movable plate is connected with the telescopic piece.

6. The adjustable die for the overflow port of the tundish of claim 5, wherein: the fixed plate is consistent with the working layer of the tundish in length, and the fixed plate is 150mm in length.

7. A method of using an adjustable mould for a tundish overflow comprising an adjustable mould for a tundish overflow as claimed in any one of claims 1 to 5, the method comprising:

step one, arranging the adjustable mould at an overflow port of the tundish, and attaching the fixed first wall plate to one side wall of the overflow port of the tundish;

and step two, the nut is rotated to drive the screw rod to rotate and move, so that the first wall plate connected with the nut is moved to gradually close to the other side wall of the tundish overflow port on the same side.

8. The use method of the adjustable die for the overflow port of the tundish as claimed in claim 6, wherein the moving stroke of the screw is 2-3 cm.

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