KR20190076865A - Method of manufacturing wide width steel shhet and apparatus for seperating steel shhet - Google Patents

Abstract

The present invention relates to a method of manufacturing a wide steel sheet which separates a steel sheet from a rolled plate formed by rolling vertically arranged two or more plates to manufacture a steel sheet, and a steel sheet separating apparatus used in separating a steel sheet from a rolled plate. According to an embodiment of the present invention, the method of manufacturing a wide steel sheet comprises: a rolled plate preparing step of preparing a rolled plate formed by rolling two or more plates after vertically arranging the plates; a trimming step of trimming edges of the rolled plate; and a steel sheet separating step of separating the trimmed rolled plate for each layer to obtain steel sheets. The steel sheet separating step is performed by allowing a separating member to relatively move with respect to the trimmed rolled plate along a boundary surface between an upper steel sheet and a lower steel sheet of the trimmed rolled plate.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method of manufacturing a wide steel plate,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a wide-width steel plate using a rolled plate formed by vertically arranging two or more plates, and then rolling the steel plate and a steel plate separator used therefor.

Generally, a thick plate means a steel plate having a thickness exceeding 6 mm, and its width is approximately 2000 to 5000 mm. Generally, there is a disadvantage that it is difficult to control the thickness of a thick plate manufactured in a general thick plate manufacturing facility to 6 mm or less when the width is 2000 mm or more. On the other hand, when a plate of 6 mm or less is required, a hot rolled steel sheet obtained in the form of a wound coil through hot rolling is generally used. The hot rolled steel sheet usually has a thickness of 1 to 22 mm and a width of 600 to 1950 mm.

According to the industry, the demand for the steel plate having a wide width and a wide width is increasing according to the performance requirement of the structural parts. Especially in the shipbuilding industry, the demand for cabin structures such as cruise ships, the living spaces of large merchant ships, and special ship structural materials are expanding.

However, in general, as the thickness of the steel sheet becomes thinner, the sensitivity of thermal deformation during welding increases, so that the steel sheet to be applied to a structural member is required to have a wide width so as to reduce the number of welded points. That is, the larger the width, the smaller the number of welding required, which is advantageous in that it can be easily applied to a structural material. For this reason, the actual users are demanding the production of a rear plate having a thickness of 6 mm or less, which is 2000 mm or more in width, rather than a narrow hot-rolled steel plate (hereinafter, also referred to as "ultra-wide plate").

This demand is also demanded in the flooring of energy storage tanks or roofing materials. Also, in the field of industrial machinery, a wider material having a thickness of 3.2 to 5 mm is demanded as a wear-resistant steel used for a truck loading floor plate. For this reason, some steel mills use a small-diameter rolling roll for the purpose of production of ultra-wide-width wide plates and use a CVC process for roll crown control to produce a 3 to 6 mm thick ferrous material up to 3500 mm width have. However, the steel mills are limited in their thickness and width in the production of heavy plates due to facility restrictions.

In general steel mills, heavy plate water mills with large rolling roll diameters are used. Therefore, sizing rolling is carried out for the production of 6 mm or less of rear plate material. After eliminating factors such as rolling load, it is reheated in heating furnace And a process for producing superfine materials is adopted. However, such a process is also problematic due to wave control and roll kissing in the thickness direction, which limits the production thickness and width thereof, making it difficult to manufacture a super wide plate.

One aspect of the present invention relates to a method of manufacturing a wide-width steel plate for separating a steel plate from a rolled plate formed by rolling two or more plate members vertically and then manufacturing the steel plate, and a steel plate separator used for separating the steel plate from the rolled plate will be.

According to one aspect of the present invention, there is provided a method of manufacturing a rolled plate, the method comprising: preparing a rolled plate formed by vertically arranging two or more plates; A trimming step of trimming the periphery of the rolled plate material; And a steel sheet separating step of separating the trimmed rolled sheet material by layers to obtain a steel sheet, wherein the steel sheet separating step includes a step of separating the trimmed rolled sheet material along the interface between the upper steel sheet and the lower steel sheet, So as to perform a relative movement with respect to the wide-width steel plate.

At this time, the steel sheet separating step includes an adsorption step of adsorbing the upper steel sheet of the trimmed rolled plate, and the separating member moving along the interface with at least a part of the circumference of the upper steel plate being lifted through the adsorption step And a separating step of separating the upper steel sheet.

The adsorption process may be performed through at least one of magnetic adsorption and vacuum adsorption.

Further, the separating member may include at least one of a roll and a wedge member conveyed to separate the upper steel plate and the lower steel plate.

The separating step may include a step of adjusting the vertical position so that the separating member has a position corresponding to the interface.

The rolled plate material preparing step is a step of preparing a rolled plate material by arranging a plate material having a thickness of 40 to 200 mm vertically and then joining outer circumferential surfaces to form a plate material aggregate and pressing the plate material aggregate with a reduction ratio of 10 to 40: And the like.

The steel sheet separated in the steel sheet separating step may have a thickness of 6 mm or less and a width of 2000 mm or more.

According to another aspect of the present invention, there is provided a separating apparatus for separating a rolled plate formed by rolling two or more plate materials vertically, comprising: a suction unit for adsorbing an upper steel plate to separate an upper steel plate from a rolled plate; And a separator for separating the upper steel plate from the lower steel plate by moving in the longitudinal direction of the rolled plate material along an interface between the upper steel plate and the lower steel plate of the rolled plate material .

In this case, the steel plate separator includes a vertical transfer unit for adjusting the vertical position of the separating member so that the separating member has a position corresponding to the interface, and a vertical transfer unit for moving the separating member along the interface in the longitudinal direction of the rolled plate And may have a longitudinal direction transferring portion.

According to one embodiment of the present invention having such a configuration, it is possible to provide a steel sheet that is ultra-thin but wide even in general-use steel rolling conditions in a general-purpose facility that is difficult to produce a conventional ultra-wide width wide material. In addition, even if the conventional general-purpose rolling mill is used, the equipment load can be solved and the manufacturing cost can be reduced.

According to an embodiment of the present invention, a steel sheet can be easily separated from a rolled plate formed by rolling two or more sheets of sheet material up and down.

1 is a schematic diagram for explaining a manufacturing process of a plate material aggregate formed by vertically arranging two or more plate materials and joining them together according to an embodiment of the present invention.
Fig. 2 is a schematic view for explaining a method of rolling the steel sheet according to the thickness of the target steel sheet at a different sheet thickness and number of sheets.
FIG. 3 is a photograph of a cross section taken along a direction perpendicular to rolling after rolling a bonded plate aggregate according to an embodiment of the present invention. FIG.
4 is a photograph showing a state of a steel sheet according to an embodiment of the present invention.
5 is an explanatory view showing a wide-width steel plate manufacturing method according to an embodiment of the present invention in order.
6 is a schematic view of a steel plate separating apparatus according to an embodiment of the present invention.
7 is a schematic view of a steel plate separating apparatus according to another embodiment of the present invention.
FIG. 8 is an explanatory view showing a process of separating a steel sheet using the steel sheet separating apparatus shown in FIG. 6 in order.
FIG. 9 is an explanatory view showing a process of separating a steel sheet using the steel sheet separating apparatus shown in FIG. 7 in order.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. However, the embodiments of the present invention can be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below. Further, the embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art. The shape and size of elements in the drawings may be exaggerated for clarity.

Also, in this specification, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise and wherein like reference numerals refer to the same or corresponding components throughout the specification.

The inventors of the present invention have found that, in the process of producing a thick plate, two or more metal plates are bonded (for example, welded) and then bonded to each other using various metal plates (Hereinafter, the rolled plate is referred to as a 'rolled plate') in a section where the rolled plate is rolled in the width and the width of the rolled plate, The present invention has been completed.

However, the present invention is not limited to the method of manufacturing a super wide width wide plate, but can be used in a wide width steel plate manufacturing method. Hereinafter, a steel plate is separated from a rolled plate based on a manufacturing process of a super wide width wide plate, A method of manufacturing will be described.

One embodiment for manufacturing a superabsorbent broad plate includes the steps of: preparing two or more plates; Applying a separating agent to the surface of the plate material; A step of arranging the plate material on which the separating agent is applied, and then joining the outer circumferential surfaces of the plate material to the plate material to obtain a plate material assembly; Rolling the plate aggregate; Removing the joined portion of the rolled plate material aggregate; And separating the plate assembly from which the joint is removed to obtain a steel sheet.

In this regard, an embodiment of the present invention is a rolling method comprising: a rolling plate preparing step of preparing a rolling plate formed by rolling two or more plates upside down; A trimming step of trimming the periphery of the rolled plate material; And a steel sheet separating step of separating the trimmed rolled sheet material by layers to obtain a steel sheet, wherein the steel sheet separating step includes a step of separating the trimmed rolled sheet material along the interface between the upper steel sheet and the lower steel sheet, So as to perform a relative movement with respect to the wide-width steel plate.

First, with reference to Figs. 1 to 4, an embodiment for manufacturing a super wide beam thick plate will be described.

1 is a schematic diagram for explaining a manufacturing process of a plate material aggregate formed by vertically arranging two or more plate materials and joining them together according to an embodiment of the present invention.

First, as shown in Fig. 1, two or more sheets 10 and 10 'are prepared. As the plate material, at least one selected from the group consisting of a slab, a bar plate and a thick plate may be used. On the other hand, if the prepared plate material has a thickness that can be preferably applied to the present invention, the post-processing may be carried out as it is. However, if the plate material is considerably thick, the plate material can be subjected to sizing rolling. Sizing rolling means rolling to reduce the thickness of the sheet material. For example, when it is assumed that a normal rolling facility can accommodate a slab having a thickness of 300 mm, the slab is subjected to sizing rolling to a thickness of 150 mm, and then two slabs are stacked and welded so that the total thickness becomes 300 mm Back, and back processes. As another example, the slab may be subjected to sizing rolling to a thickness of 100 mm, and then three slabs may be stacked and welded to obtain a total thickness of 300 mm, followed by rolling. In the present invention, the thickness of the sheet material is not particularly limited as far as it is difficult to roll the sheet material in a general rolling facility. It is preferable that the plate members 10 and 10 'have a thickness of 40 to 200 mm. However, in order for the plate member to have a thickness of less than 40 mm, manufacturing itself may be difficult, The joining process is excessively required for the production of the plate assembly, and the efficiency of the process is significantly reduced. In addition, when the plate material exceeds 200 mm, there is a disadvantage in that rolling can not be performed with a normal rolling facility due to an excessive thickness.

When the plate materials 10 and 10 'are prepared as described above, the separating agent 20 is applied to the surface of the plate material. As will be described later, in the present invention, the two or more sheet materials are arranged vertically and then joined together. Therefore, it is preferable to apply the separating agent 20 to a region where the plate material is arranged vertically, that is, a region (boundary surface) where the plate material contacts with the plate material. The separating agent 20 is for preventing the plate aggregate from being mechanically bonded by rolling, and is a means for easily separating the layers from each other in the bonded and rolled rolled plate material. The separating agent 20 is preferably applied to a region where the plate material contacts with the plate material when a plurality of plate materials are piled up. However, considering the ease of application of the separating agent, it is preferable that the separating agent is applied to the upper surface of the plate member 10 'located at the lower portion of the two or more plate members. On the other hand, as the separator, a metal oxide such as Al ₂ O ₃ , SiO ₂ , TiO ₂ , Cr ₂ O ₃ , Fe ₂ O ₃ or Fe ₃ O ₄ , a group consisting of MnS, an acidic flux, May be used.

Thereafter, after the sheet material to which the separating agent 20 is applied is stacked, the sheet material assembly 30, that is, the sheet material to which various layers are bonded, is obtained by joining the outer circumferential surfaces to join the sheet materials. In the present invention, the method of bonding is not particularly limited. However, it is preferable that the joining (for example, welding) is performed on all of the outer circumferential surfaces of the portions where two or more plates contact each other. If there is an area where only the edge portion is welded or a part of the weld is not made, a problem that the separator leaks out during rolling may occur. Therefore, in the present invention, it is preferable to weld all of the outer circumferential surfaces, that is, four surfaces of the plate members which are in contact with each other. In the present invention, since a very thick plate is made of a steel plate, a considerable amount of reduction is applied to the plate, which may cause a problem of breaking the welding due to a large amount of deformation. And it is possible for a person skilled in the art to appropriately control and apply the welding amount without any difficulty in order to practice the present invention.

Thereafter, the plate aggregate 30 is rolled. In the present invention, a typical thick plate manufacturing process is used as the rolling process. Unlike conventional hot rolled steel sheets, which are rolled in one direction, the plate rolling process is a rolling process in which a plate material is rolled while passing through a rolling mill, rolled back and rolled, and the rolling direction can be changed by rotating the plate, It is also possible to roll in the direction. That is, the plate rolling process is capable of longitudinal and transverse rolling. Accordingly, in the present invention, it is possible to manufacture the plate material as a wide-width steel plate. Before the rolling process, the plate assembly may be heated. The rolling process may include rough rolling and finishing rolling processes as well as ordinary thick plate manufacturing processes. After the finish rolling, a step such as shape correction can be performed.

In the present invention, since the pressing ratio can be set and applied according to the thickness of the target steel sheet at the time of rolling, the pressing force is not particularly limited, but it can be, for example, 10 to 40: 1 . When the reduction ratio is more than 40: 1, there is a problem that the possibility of fracture of the joint portion (welded portion) increases due to a high compression ratio during the rolling process. In order to prevent this, it is necessary to increase the joining process A problem occurs. In this case, the number of joints to be finally removed (trimmed) increases, which leads to a decrease in production yield. If the reduction ratio is increased, the amount of the separating agent applied for separation after the rolling process is increased. When the reduction ratio is less than 10: 1, the number of plates 10, 10 'constituting the plate assembly 30 is increased in order to obtain a steel plate of a thin steel plate, and the thickness of the plate member becomes thin, There is a disadvantage that the number of welding times of the plate material excessively increases in order to manufacture a plate material assembly in which a plurality of layers are bonded, resulting in a significant decrease in the efficiency of the process.

Fig. 2 is a schematic view for explaining a method of rolling the steel sheet according to the thickness of the target steel sheet at a different sheet thickness and number of sheets.

Fig. 2 (a) shows a case in which the target thickness of the steel sheet is 4 mm, and three pieces of the sheet material subjected to sizing and rolling of 60 mm are stacked and then joined (edge portions are welded) so that the joined sheet material assembly 30 has a thickness of 180 mm , And this is rolled with a reduction ratio of 15: 1 to obtain a rolled plate 40 having a final thickness of 12 mm. Thereafter, when the rolled plate 40 having a thickness of 12 mm is divided into three steel plates, the steel plate finally has a thickness of 4 mm.

Fig. 2 (b) shows a case in which the desired thickness of the steel sheet is 3 mm, in which four sheets of the sheet material subjected to sizing and rolling of 60 mm are stacked and then joined together to have a thickness of 240 mm, Thereby obtaining a rolled plate 40 having a final thickness of 12 mm. Thereafter, when the rolled plate 40 having a thickness of 12 mm is divided into four steel plates, the steel plate finally has a thickness of 3 mm.

Fig. 2 (c) shows a case in which the desired thickness of the steel sheet is 2.4 mm, in which five sheets of sizing-rolled sheets of 60 mm are stacked and then joined together to have a thickness of 300 mm, So as to obtain a rolled plate 40 having a final thickness of 12 mm. Thereafter, when the rolled plate 40 having a thickness of 12 mm is separated into five steel plates, the steel plate finally has a thickness of 2.4 mm.

3 is a photograph of a cross section of the rolled plate 40 obtained by rolling the plate aggregate 30 according to an embodiment of the present invention in the direction perpendicular to the rolling direction. As can be seen from Fig. 3, it can be seen that both ends of the steel sheet are bonded by welding (welding), and in the other areas, the separator 20 separates the steel sheet.

Next, the joint portion (welded portion) of the rolled plate 40 is removed. There may be a variety of methods for removing the welded portion (welded portion), but side trimming can be used in the present invention. As the side trimming, a gas cutting method or a mechanical cutting method can be used. It is possible to eliminate the joining portion (welded portion) through the side trimming and to solve the problem of the shape defect of the plate member end portion.

Thereafter, each layer is separated from the rolled plate 40 from which the welded portion (joined portion) is removed to obtain a steel plate. In the present invention, since the steel sheet is manufactured through the thick plate process, the steel sheet has a plate shape instead of a coil shape. In addition, although the steel sheet provided by the present invention is manufactured using a thick plate process, it may be a steel sheet having a thickness of 6 mm or less and a width of 2000 mm or more.

4 is a photograph showing a state of a steel sheet according to an embodiment of the present invention. As can be seen from FIG. 4, it can be seen that the steel sheet of the present invention was manufactured in a smooth shape without mechanical defects on its surface after the joint (weld) was removed and separated.

On the other hand, in the present invention, the steel sheet obtained as described above can be further subjected to surface treatment such as shot blasting or heat treatment.

Next, a method of manufacturing a wide-width steel sheet according to an embodiment of the present invention will be described with reference to Figs. 5 to 9. Fig.

A method of manufacturing a wide-width steel sheet according to an embodiment of the present invention is a method of manufacturing a wide-width steel sheet, in which two or more sheets of a sheet material are vertically arranged (that is, stacked) A trimming step of trimming the periphery of the rolled plate material 40; And a steel plate separating step of separating the trimmed rolled plate material 50 by layers to obtain a steel plate 60. The steel plate separating step separates the trimmed rolled plate material 50 from the interface between the upper steel plate and the lower steel plate BS so that the separating members 131 and 132 move relative to the trimmed rolling plate 50. [

First, in the rolling sheet material preparation step shown in Fig. 5 (a), the rolled sheet material 40 can be manufactured by the process shown in Figs. 1 and 2 as an example.

That is, as shown in FIG. 1, two or more sheets 10 and 10 'are prepared, a separating agent 20 is applied to the surface of the lower sheet 10', and the separating agent 20 is applied The plate material assembly 30 can be obtained by stacking the plate members 10 and 10 'in the vertical direction and joining the outer circumferential surfaces to join the plate members 10 and 10'. Then, as shown in FIG. 2, (30) is rolled to obtain a rolled plate material (40).

Next, a trimming step may be performed as shown in Fig. 5 (b).

The trimming step is a step of removing the periphery of the rolled plate 40 to remove the welded portion (welded portion) W. The trimming line TL of the trimming step can be formed at a predetermined distance d from the edge of the rolled plate 40 of the plate material and the amount of removal of the welded portion W It is possible to select a thickness at which no bonding occurs in the rolled plate material.

In this regard, one of the important factors in the trimming step is the amount of cutting according to the rolling ratio, the thickness of the slab, and the welding amount.

If the cut-off amount of the welded part is insufficient compared to the amount of welding or the amount of reduction, the jointed part remains after the trimming step, so that the steel sheet can not be separated in the subsequent step. On the contrary, if the cut- there is a problem.

The following Table 1 shows the results of experiments on whether or not the joining occurred at the cut-off portion when the cut-off amount was varied when the plate material (slab) of 100 mm thickness was rolled with various reduction ratios.

As can be seen from Table 1, in the case where the pressing ratio is 40: 1, no joining occurs at the cut portion of the trimmed rolled plate 50 when the welding cut amount is 6 mm or more, , The bonding did not occur at 8 mm or more in the case of a 10:

Abjabi Cutting amount of weld (d) Whether or not
40: 1
8mm X 6mm X 4mm O
20: 1
10mm X 8mm X 6mm O 10: 1
10mm X 8mm O

In this way, it is possible to select the cut-out amount within a range in which no joint occurs in consideration of the thickness of the plate material, the compression ratio, and the welding amount.

This trimming step may be performed to remove only the circumferential portion of the rolled plate 40. However, as shown in Fig. 5 (b), the middle portion of the rolled plate 40 may be formed at a predetermined length And cutting the sheet into a plurality of trimmed rolled sheet materials 50. [

Fig. 5 (c) shows the trimmed rolled sheet material 50 after the trimming step.

Next, as shown in Figs. 5 (d) to 5 (g), a steel plate separating step is performed in which the trimmed rolled plate members 50 are separated in layers on the basis of the interface BS to obtain the steel plate 60 do.

5 (d)) for adsorbing the upper steel plate 60 of the trimmed rolled plate 50 and a process of lifting at least a part of the circumference of the upper steel plate 60 through the adsorption process (Fig. 5 (e)), the separating member including the roll 131 moves along the interface BS (Fig. 5 (f)) to separate the upper steel sheet can do. At this time, the separating agent (DM 20 in FIG. 1) is applied between the steel plates 60, so that the steel plate 60 can be easily separated.

5 (d) to 5 (g), it is described that the roll 131 as the separating member moves along the interface BS. However, when the rolled sheet material 50 having the roll 131 is fixed, It is also possible to configure such that it moves. That is, the steel sheet separating step may be performed by causing the separating member to move relative to the trimmed rolled plate 50 along the interface BS between the upper steel plate and the lower steel plate of the trimmed rolled plate 50.

The adsorption process shown in Fig. 5 (d) can be performed through at least one of magnetic adsorption and vacuum adsorption. The number of the suction members 121 installed on the steel sheet can be variously changed in consideration of the width, length, and weight of the plate members.

5E, the adsorption member 121 is shown to lift the edge of the steel plate 60 first. However, the plurality of adsorption members 121 can lift the steel plate sequentially from the edge, .

6 and 7, a steel sheet separating apparatus 100 according to another aspect of the present invention will be described.

The steel strip separating apparatus 100 according to an embodiment of the present invention is a steel strip separating apparatus 100 according to an embodiment of the present invention. The steel strip separating apparatus 100 comprises a rolling sheet 40 formed by vertically arranging two or more sheets 10, 10 ' A separation device for separating a plate material (50), comprising: a suction part (120) for suctioning an upper steel plate (60) to separate an upper steel plate (60) from a trimmed rolled plate material (50) A steel plate separator 130 having separating members 131 and 132 for separating the upper steel plate 60 from the lower steel plate 60 in the longitudinal direction of the rolling plate 50 along the interface BS between the upper and lower steel plates, ). ≪ / RTI > The steel plate separating apparatus 100 may further include a base member 110 on which the rolled plate 50 is placed for the steel plate separating operation of the rolled plate 50.

At this time, the adsorption unit 120 may include at least one of a magnetic adsorption member and a vacuum adsorption member. In addition, the installation position and the number of the adsorption member 121 can be variously changed in consideration of the width, length, weight, and the like of the steel plate.

The adsorption unit 120 may include a driving unit 125 that can move in three dimensions to adsorb the adsorption member 121 or to move the adsorption unit 121 to a predetermined loading position in a state in which the steel plate is adsorbed. The driving unit 125 may be a variety of devices such as a crane or a robot capable of three-axis motion.

The separating member 130 may include at least one of a roll (131 in FIG. 6) and a wedge member (132 in FIG. 7) fed to separate the upper steel plate and the lower steel plate.

The roll 131 is suitable when the upper steel plate is well separated from the lower steel plate when the upper steel plate is lifted through the adsorption member 121 and there is a sufficient space for the roll 132 to enter between the upper and lower steel plates, The member 132 is suitable for forcibly separating the interface BS when the gap between the upper and lower steel plates is not formed or a part of the cut surface of the upper and lower steel plates is not separated, but the present invention is not limited thereto.

The separating unit 130 separates the upper steel plate 60 from the lower steel plate 60 while the roll 131 or the wedge member 132 moves along the interface BS in the longitudinal direction of the rolled plate 50 And may include a longitudinal direction transfer portion 137.

Further, since the rolled plate 50 may have different numbers and thicknesses of the steel plates disposed up and down (stacked), the rolling plate 50 may be vertically arranged to adjust the vertical position of the separating member so that the separating member has a position corresponding to the interface BS And may further include a transfer unit 136.

Finally, with reference to Figs. 8 and 9, the steel sheet separating step performed using the steel sheet separating apparatus 100 shown in Figs. 6 and 7 will be described in detail.

5D, the steel plate separating step is a step of separating the upper steel plate 60 of the rolled plate material 40 or the trimmed rolled plate 50 by the suction member 121 8 (a) and 9 (a)}, and at least a part of the circumference of the upper steel plate 60 adsorbed by the adsorbing member 121 is lifted (Fig. 8 (b) 8 (d) and Fig. 9 (d)), the separation member including the roll (131 in Fig. 8) or the wedge member (132 in Fig. 9) moves along the interface BS The steel plate is separated and the upper steel plate is moved to a predetermined stacking position (Fig. 8 (e) and Fig. 9 (e)). Thereafter, the lower steel plate can also be moved to the loading position by the suction unit 120 (Fig. 8 (f) and Fig. 9 (f)).

8 (b) and 9 (b), before the upper steel plate 60 is adsorbed by the adsorption member 121, after the upper steel plate 60 is adsorbed, A step of adjusting the vertical position of the separating members 131 and 132 so that the separating members 131 and 132 have positions corresponding to the interface BS after the steel plate 60 is lifted.

On the other hand, as shown in FIG. 8 (c), when the upper steel plate 60 is sufficiently lifted by the suction member 121, the roll 131 can enter the gap between the steel plates to separate the upper and lower steel plates .

9 (b) and 9 (c), if the gap between the upper and lower steel plates is small or is not easily separated after the adsorption member 121 adsorbs the steel sheet, the wedge member 132 It is also possible to constitute the wedge member 132 to move while pressing the interface BS to form a space between the upper and lower steel plates.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be obvious to those of ordinary skill in the art.

10, 10 '... plate material 20 ... separator
30 ... plate assembly 40 ... rolled plate member
50 ... trimmed rolled plate 60 ... steel plate
100 ... steel plate separator 110 ... base member
120 ... suction portion 121 ... suction member
130 ... separator 131 ... roll
132 ... wedge member 136 ... vertical transfer unit
137 ... longitudinal direction feed part 121 ... separation member
BS ... Boundary d ... Cutting amount
W ... welding part TL ... trimming line

Claims (11)

Preparing a rolled plate material by arranging two or more plate materials vertically and then rolling;
A trimming step of trimming the periphery of the rolled plate material; And
A steel plate separating step of separating the trimmed rolled plate by layers to obtain a steel plate;
/ RTI >
Wherein the step of separating the steel sheet is performed by causing a separating member to move relative to the trimmed rolling sheet along an interface between the upper steel sheet and the lower steel sheet of the trimmed rolled sheet material. The method according to claim 1,
The separating step may include an adsorption step of adsorbing the upper steel sheet of the trimmed rolled plate and a separating step of moving the separating member along the interface with at least a part of the circumference of the upper steel plate being lifted through the adsorption step, And a separating step of separating the wide-width steel plate from the wide-width steel plate. The method of claim 2,
Wherein the adsorption step is carried out through at least one of magnetic adsorption and vacuum adsorption. The method according to claim 1,
Wherein the separating member includes at least one of a roll and a wedge member that is fed to separate the upper steel plate and the lower steel plate. The method of claim 2,
Wherein the separating step comprises the step of adjusting the vertical position so that the separating member has a position corresponding to the interface. The method according to any one of claims 1 to 5,
The rolled plate material preparation step may include preparing a rolled plate material obtained by arranging a plate material having a thickness of 40 to 200 mm vertically and then joining outer circumferential surfaces to form a plate material aggregate and pressing the plate material aggregate with a reduction ratio of 10 to 40: Wherein the width of the steel sheet is in the range of 10 to 20 mm. The method according to any one of claims 1 to 5,
Wherein the steel sheet separated in the steel sheet separating step has a thickness of 6 mm or less and a width of 2000 mm or more.
A separating apparatus for separating a rolled plate material formed by rolling two or more plate materials vertically,
An adsorption unit for adsorbing the upper steel plate to separate the upper steel plate from the rolled plate; And
And a separating member moving in the longitudinal direction of the rolled plate along an interface between the upper steel plate and the lower steel plate of the rolled plate to separate the upper steel plate from the lower steel plate;
And the steel plate separator. The method of claim 8,
Wherein the adsorption unit comprises at least one of a magnetic adsorption member and a vacuum adsorption member. The method of claim 8,
Wherein the separating member has at least one of a roll and a wedge member which are fed to separate the upper steel plate and the lower steel plate. The method according to any one of claims 8 to 10,
The steel plate separating portion includes a vertical transferring portion for regulating the vertical position of the separating member so that the separating member has a position corresponding to the interface and a vertical direction transferring portion for transferring the separating member in the longitudinal direction And a conveying section.

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