KR101298536B1 - A inner cover for heat-treating coil - Google Patents

Abstract

The present invention relates to an inner cover for heat treatment of a steel plate which can be easily mounted and prevents deformation during mounting, comprising: a hollow body; An upper hard plate blocking an upper portion of the body; And an inner cover for heat treatment of the steel sheet including a reinforcing member formed inside the upper hard plate, which can be easily hoisted by a crane to shorten the working time, and prevent breakage due to the load of the inner cover. Therefore, it is possible to minimize the deformed deformation when hitting the inner cover.

Inner cover, protrusion, annealing

Description

Inner cover for steel plate heat treatment {A inner cover for heat-treating coil}

The present invention relates to an inner cover for steel plate heat treatment, and more particularly, to an inner cover for steel plate heat treatment that enables easy mounting and prevents deformation during mounting.

In general, the inner cover is used to perform annealing heat treatment of a steel sheet coil such as an electrical steel sheet to obtain desired characteristics, and after placing the steel sheet coil in an airtight container, the inner cover does not directly apply heat to the steel sheet, It is used to maintain the temperature of about 1200 ℃ due to the various atmosphere gases such as hydrogen, argon, reducing gas inside the cover to perform a heat treatment suitable for the electrical steel sheet characteristics.

In the conventional mounting process of the inner cover, when the iron plate coil is placed on the inner cover for annealing the steel sheet, the iron plate coil is disposed at a predetermined position such as the upper portion of the seating plate provided in the base, and then the inner cover is mounted to a crane having three arms. The steel plate coil is sealed by the same lifting mechanism, and a predetermined atmosphere gas is injected into the inner cover to perform annealing heat treatment.

At this time, the arm of the crane supports the protrusion of the inner cover to carry it, and the inner cover of the inner cover is seated on the fine thread provided in the base for sealing the steel plate coil, and then hits the upper hard plate with the striking part of the crane to the body. The space inside the inner cover is sealed by inserting into the thread.

In this case, the upper hard plate may be recessed by hitting the upper hard plate of the inner cover with the hitting part, and in order to correct this, a separate restoration work must be performed and, in severe cases, the upper hard plate should be discarded. Even when the body is deformed by the impact force applied to the upper hard plate, it may be restored or discarded.

In addition, the protrusion is welded by a plurality of frames on the support to form a radial isometric to the body, when the welding arm is damaged due to the weight of the inner cover when supporting the protrusion with the arm of the crane occurs. .

In addition, in order to support the protrusions with the same number of arms as the protrusions, the arms of the crane must be matched to the positions of the protrusions, but it is not easy to select the position of the arm, which takes some time.

The present invention has been made to solve the above problems, can be easily hoisted by a crane can shorten the working time, to provide an inner cover for heat treatment of the steel sheet to prevent damage by the load of the inner cover The purpose is.

In addition, an object of the present invention is to provide an inner cover for heat treatment of the steel sheet to minimize the depression deformation when hitting the inner cover with a crane.

The present invention, the hollow body; An upper hard plate blocking an upper portion of the body; It provides an inner cover for steel plate heat treatment comprising a; and a reinforcing material formed inside the upper hard plate.

Here, the reinforcing material is characterized in that a plurality of is arranged at an equiangular from the center of the upper hard plate, the center of the upper hard plate may be formed with a central reinforcement of the concentrated reinforcement.

In addition, the outer periphery of the upper plate may be provided with a protrusion extending in the horizontal direction in the horizontal direction from the outside in accordance with the reinforcement.

At this time, the protrusions, the upper and lower supports extending from the outer edge of the upper plate; And a plurality of support frames vertically connected to the upper and lower supports.

In addition, at least one of the upper and lower supports and the plurality of support frames may be integrated with the upper hard plate.

Here, an uneven surface may be formed on the body or the upper hard plate.

In addition, the present invention, the hollow body; An upper hard plate blocking an upper portion of the body; It provides an inner cover for steel sheet heat treatment comprising a; and a protrusion extending in a direction horizontal to the ground at the outer edge of the upper hard plate.

Here, the protrusions are characterized in that a plurality of are arranged at a right angle with respect to the center of the upper hard plate, the protrusions may be formed with an uneven surface.

By the inner cover for heat treatment of the steel sheet according to the present invention as described above, it can be easily hoisted by a crane can shorten the working time, to prevent damage due to the load of the inner cover, when hitting the inner cover with the crane It can be to minimize the deformation in the recess.

Hereinafter, the inner cover for heat treatment of the steel sheet according to the embodiment of the present invention will be described in detail. It will be apparent to those skilled in the art that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, It is provided to let you know.

Unless defined otherwise, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. Commonly used predefined terms are further interpreted as having a meaning consistent with the relevant technical literature and the present disclosure, and are not to be construed as ideal or very formal meanings unless defined otherwise.

The continuous open flame furnace (COF), a hearth rotary direct-coil continuous annealing furnace, includes a number of furnaces, doors and conveyor equipment. Each annealing furnace is rotatably disposed on the conveyor belt, and doors are provided at the inlet and outlet sides of the annealing furnace, respectively, to distinguish between the heating area and the cooling area. The annealing treatment object enters and exits a plurality of furnaces while rotating the COF through the conveyor facility, and heat treatment is performed by heating and cooling.

In annealing an iron sheet coil such as an electrical steel sheet or a oriented silicon steel sheet in such COF, the stacked iron sheet coil is disposed in an inner cover, and filled with an atmosphere gas such as hydrogen gas in the inner cover and rotated to a conveyor facility.

At this time, after placing the iron plate coil on the support in order to place the stacked iron plate coils in the inner cover, the inner cover is transported to a transport device to bubble the support and the iron plate coils stacked thereon. In order to maintain the airtightness of the atmosphere gas to be charged into the inner cover, the lower portion of the inner cover is charged to the existing sand by hitting the upper portion of the inner cover with a transport device.

1 is a front permeability of the inner cover according to an embodiment of the present invention, Figure 2 is an enlarged perspective view of the portion "A" of FIG. BRIEF DESCRIPTION OF THE DRAWINGS The drawings described herein, including FIG. 1, are diagrammatically illustrated, and the sizes and shapes of the parts are exaggerated and shown to be easy to understand. Like reference numerals refer to like elements throughout.

1 and 2, the inner cover 100 for heat treatment of the steel sheet according to an embodiment of the present invention, the hollow body 150, the upper hard plate 130 and the upper hard plate to block the upper portion of the body 150 It includes a reinforcing material 121 formed in the interior of the 130.

The body 150 has a cylindrical shape and a hollow is formed therein. The hollow inside has a space in which the iron coil is charged, and also has a space in which a support for supporting the iron coil is installed.

The upper portion of the body 150 is connected to the body 150, the upper hard plate 130 to close the hollow formed in the body 150 on one side. The upper hard plate 130 is preferably formed integrally with the body 150, but may be connected by a joining means such as welding. In addition, the upper hard plate 130 may be formed by the upper surface hit by the crane arcuate bend.

The reinforcement 121 is formed inside the upper hard plate 130. When the upper hard plate 130 is formed to be arcuate upward, the reinforcing material 121 may be formed to match the bottom side of the upper hard plate 130. In other words, the reinforcing material 121 is formed to the bottom side of the upper hard plate 130 under the arcuate upper surface of the upper hard plate 130.

The reinforcement 121 is preferably formed integrally with the upper hard plate 130, but may be connected by a joining means such as welding. In addition, the reinforcing material 121 may be formed of the same material as the upper hard plate (130).

On the outer edge of the upper hard plate 130 is formed a protrusion 110 protruding to the outside. As shown in FIG. 2, the protrusions 110 are vertically connected to the upper and lower supports 111 and 112 and the upper and lower supports 111 and 112 extending from the outer edge of the upper plate 130. , 113b, 113c, and 113d.

The lower support 112 is substantially in contact with the arm of the crane is loaded with the load of the arm. The load is distributed to a plurality of support frames 113 vertically connected to the lower support 112, and the upper support 111 vertically connected to the support frame 113 is resistant to the load applied to the support frame 113. To assist. The upper support 111 and the lower support 112 may have the same size, or may have a different size in the circumferential direction or in a direction projecting outward.

At least one of the upper and lower supports 111 and 112 and the support frame 113 of the protrusion 110 may be integrally molded at the time of forming the upper hard plate 130. The remaining members that are not integrally formed with the upper hard plate 130 may be connected by a joining means such as welding. At least one of the upper and lower supporters 111 and 112 and the support frame 113 are integrally formed with the upper hard plate 130 so that when the protrusion 110 is hoisted by a crane, the load of the inner cover 100 is increased. It can provide breakage resistance.

In addition, the protrusion 110 may be further extended in the outer circumferential direction of the inner cover 100 than the conventional protrusion. That is, the lower support 112 having a larger number of support frames 113a, 113b, 113c, and 113d than the conventional support frame, and extending further in the circumferential direction than the conventional support frame, and the upper support 111 corresponding thereto. Can have Due to the configuration of the extended protrusion 110, the contact probability of the crane when the arm contacts the protrusion 110 may be further increased. Therefore, it is possible to further increase the probability that the arm of the crane is matched with the position of the protrusion 110 and further reduce the hoisting and moving time of the inner cover 100. In addition, the protrusion 110 may be formed over the entire outer circumference of the upper hard plate 130.

3A is a plan view of an inner cover according to an embodiment of the present invention, and FIG. 3B is a modification of FIG. 3A.

Referring to FIG. 3A, a plurality of reinforcing members 121 may be disposed inside the upper hard plate 130 at a right angle from a center of the upper hard plate 130. In addition, a plurality of protrusions 110 may be disposed at a right angle from the center of the upper hard plate 130. The protrusion 110 may be formed at a point where the reinforcement 121 meets the outer edge of the upper hard plate 130 in conformity with the plurality of reinforcing members 121 disposed at an equal angle, but the protrusion 110 may be formed at a different position. It may be formed, or may be formed in a number different from the number of the reinforcing material 121.

As such, when the plurality of reinforcing members 121 are formed at an equiangular shape from the center of the upper hard plate 130, the striking force may be uniformly distributed when the upper hard plate 130 is hit by the crane. Therefore, it is possible to reduce the depression deformation caused by the hitting.

The reinforcement 121 may also include a central reinforcement 122 in the center portion where the striking force is concentrated, as shown in FIG. 3B. The central reinforcement part 122 is configured to concentrate the reinforcement 121 to further absorb the striking force. Preferably, the center reinforcement part 122 may also be formed to be symmetrical with the center of the upper hard plate 130.

FIG. 4 is a view showing another embodiment of FIG. 1, and FIG. 5 is an enlarged perspective view of part “B” of FIG. 4.

An uneven surface 153 may be formed on the body 150 of the inner cover 100. The uneven surface 153 is formed on the contact surface with the crane at the time of lifting and lowering by supporting the inner cover 100 by a crane, the frictional resistance force due to contact with the crane against the load due to the weight of the inner cover 100 By providing this it is possible to prevent the separation of the inner cover 100 from the crane. Preferably, irregularities are also formed in the contact portion of the crane in contact with the inner cover 100 to further increase the frictional resistance, and more preferably, the irregularities of the crane and the uneven surface 153 of the inner cover 100. ) Can be mutually engaged to provide greater frictional resistance by increasing the contact area.

As shown in FIG. 5, the uneven surface 153 may have recesses and convex portions formed in a direction in which the load of the inner cover 100 is loaded, that is, a direction perpendicular to the direction of gravity. Thus, when the recessed portion and the convex portion are formed perpendicular to the direction of gravity, the frictional resistance may be the maximum value as compared to the other directions.

In addition, preferably, the recessed portions and the convex portions of the uneven surface 153 may be alternately formed to provide frictional resistance in a direction parallel to the ground. The frictional resistance provided in the horizontal direction with the ground can prevent the inner cover 100 from being separated in the horizontal direction by vibration or the like when the inner cover 100 is transported by the crane.

In addition to the body 150, the concave-and-convex surface 153 may also be formed on the upper hard plate 130, the projection 110 is supported by the crane to substantially carry the weight of the inner cover 100, more details It may also be formed on the lower surface of the lower support 112 (see Fig. 2) of the protrusion 110. In this case, an uneven portion corresponding to the uneven surface formed on the lower surface of the lower support 112 may be formed on the upper arm of the crane.

Although the technical spirit of the present invention has been described in detail according to the above-described preferred embodiment, it should be noted that the above-described embodiment is for the purpose of description and not of limitation. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention.

In particular, although only three stiffeners and three protrusions are illustrated in the drawings, a larger number of stiffeners and protrusions may be provided, and the number of stiffeners and protrusions may be different.

1 is a front permeability of the inner cover according to an embodiment of the present invention,

FIG. 2 is an enlarged perspective view of part “A” of FIG. 1;

3A is a plan view of an inner cover according to an embodiment of the present invention;

3B is a variation of FIG. 3A,

4 is a view showing another embodiment of FIG.

5 is an enlarged perspective view of part “B” of FIG. 4;

<Explanation of symbols for the main parts of the drawings>

100 ... inner cover, 110 ... protrusion,

121 reinforcement, 130 upper upper plate.

Claims (10)

Hollow body; An upper hard plate blocking an upper portion of the body; And It includes a reinforcing material formed inside the upper hard plate, The inner cover for heat treatment of the steel sheet is arranged a plurality of the reinforcement isometric from the center of the upper hard plate. delete The inner cover of claim 1, wherein a central reinforcing part in which the reinforcing material is concentrated is formed at the center of the upper hard plate. The inner cover for steel sheet heat treatment according to claim 1, further comprising a protrusion protruding from the outside in the direction parallel to the ground from the outside in conformity with the reinforcing material on the outer edge of the upper hard plate. The method according to claim 4, The protrusion, Upper and lower supports extending from the outer edge of the upper plate; And A plurality of support frames connected vertically with the upper and lower supports; Inner cover for steel sheet heat treatment, characterized in that it comprises a. The inner cover of claim 5, wherein at least one of the upper and lower supports and the plurality of support frames is integral with the upper hard plate. The inner cover of claim 1, wherein an uneven surface is formed on the body or the upper hard plate. Hollow body; An upper hard plate blocking an upper portion of the body; And It includes a protrusion extending in a direction horizontal to the ground on the outer edge of the upper slab, The protrusion, Upper and lower supports extending from the outer edge of the upper plate; And A plurality of support frames connected vertically with the upper and lower supports; Inner cover for heat treatment of steel sheet comprising a. The inner cover of claim 8, wherein a plurality of protrusions are disposed at a right angle with respect to the center of the upper hard plate. The inner cover of claim 8, wherein an uneven surface is formed on the protrusion.

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