JP2006298485A - Coil handling and transferring method and coil to which the method is applied - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To shorten lead time by handling and transferring a coil by a simple bundling at handling and transferring the coil, and to provide a coil handling and transferring method by which the coil is sent to a consumer in a normal packing style even if the coil is transferred by stacking in a ship or the like. <P>SOLUTION: The method using a transferring coil (hereinafter, referred to as "simple packed coil" ) in which at least two vertical bands are applied on the coil wound on a coiler, comprises: a banding and transferring step in which at least two vertical bands are applied to the coil wound on the coiler and immediately the coil is transferred to a temporary depot yard; a step to store the coil at the temporary depot yard; and a step to stack the stored coil using a shock absorbing material to transfer. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a hot rolled or cold rolled coil processing / conveying method and a coil to which the method is applied, and in particular, a coil processing that enables the coil to be shipped / conveyed with as simple a bundling as possible. -It is related with the conveyance method and the coil which applies the method.

  A substantial portion of the hot-rolled coil that has been hot-rolled by a hot strip mill is exported in a so-called hot-rolled state or shipped domestically. A hot-rolled coil that is shipped in such a hot coil, that is, in a so-called black skin state, is generally wound by a coiler during hot rolling and then bundled by simple banding in the coiler. Then, after being cooled to a predetermined temperature, for example, 200 ° C. or less, it is transported to a packing line, and is bound so that it can withstand transportation as shown in FIG. This bundling is generally performed by banding the hot coil 1 in at least three vertical and horizontal directions, respectively, and is shipped in that state. In addition, the band 3 hung in the vertical direction on the hot-rolled coil 1 in the down-end state shown in FIG. 5 is called a vertical band, and the band 5 hung in the horizontal direction is called a horizontal band.

  Shipments of hot-rolled coils are often stacked on a ship's deck, but if they are bundled with multiple vertical bands 3 and horizontal bands 4 as described above, ship Even if the coils are displaced from each other due to shaking, vibration, etc. during navigation, and the band is somewhat damaged, it can be delivered to the customer in a normal package.

  In such a shipping / conveying method, first, strict binding by a plurality of vertical bands 5 and horizontal bands 5 is required. In addition, such binding requires manual banding work on a packing line for shipping. Therefore, after the hot-rolled coil is brought into the coil place, it must be cooled until it reaches a temperature safe for binding work, for example, 200 ° C. or less.

  However, hot rolled coils that are shipped in a black skin state are generally pickled separately by the customer when used, and rust prevention measures at the time of shipment are unnecessary. For this reason, it is sufficient for the bundling to be able to hold the package at the time of shipment / conveyance, and simplification of bundling and reduction of work costs are desired. In addition, since coil cooling requires a considerably long time, there is a problem that the time required from the end of hot rolling to shipping becomes long, and there is a problem that the lead time from so-called order receipt to delivery becomes long. On the other hand, when shipping is rushed, the bundling work must be performed at a relatively high temperature, and there is a problem that the work load increases.

  Regarding the banding of hot-rolled coils with high-temperature black skin, Patent Document 1 discloses that coil loosening during coil conveyance is achieved by bundling after raising the band temperature to the coil temperature with the coil tightened. There is disclosure to prevent. Patent Document 2 also states that the surface temperature of a high-temperature coil is measured, the band is tightened with a tightening force commensurate with the measured temperature information, the coil is prevented from loosening, and the package shape during coil transportation and transportation is maintained. There is disclosure.

JP-A-6-72413 JP 11-105821 A

  By utilizing the technology described in Patent Document 1 or 2, the coil binding can be prevented from loosening even when the coil is bound at a high temperature, and the lead time from the end of hot rolling to shipping is shortened. The application of these means may solve the problem that the manual binding work load is large. However, these means require separate bundling devices for the vertical band and the horizontal band in order to maintain the coil packing due to a band cutting accident or the like when stacked and transported on a ship or the like. Therefore, in addition to increasing the equipment cost, in order to prevent loosening of the coil due to damage to the band during transportation, a large number of banding is required, and it takes a considerable amount of time from the end of hot rolling to shipping by simpler binding. It was not possible to solve the problem. In addition, the cold-rolled coil has a strict rust-proof packaging that can withstand long-distance / long-time conveyance, such as exports, even though simple bundling is sufficient for relatively short-distance / short-distance conveyance. As in the case of hot rolled coils, there is a need for a simple, quick and economical method for handling and transporting coils.

  The object of the present invention is to solve the problems related to the production and shipment of the coil described above, and it is possible to reduce the lead time by processing and transporting by simple binding at the time of coil processing and transporting. It is an object of the present invention to provide a coil processing / conveying method that can be delivered to a customer in a normal package even when stacked and conveyed.

  The coil processing / conveying method of the present invention uses a coil for conveyance (hereinafter referred to as “simple packing coil”) in which the coil wound by a coiler is only provided with at least two vertical bandings. The coil wound by the coiler is subjected to at least two vertical banding, and the coil banding and unloading stage for immediately unloading the coil to the temporary storage yard, and storing the coil in the temporary storage yard; The stored coils are stacked and conveyed via a cushioning material.

  In the coil processing / conveying method, it is preferable that the buffer material is disposed between the coils with the coil banding portion interposed therebetween so that the vertical banding portions of the coil do not interfere with each other. In addition, when the coil to be processed / conveyed according to the present invention is a hot rolled coil, the effect of the present invention is most effectively exhibited.

  When the coil is loaded and transported in the hatch of the ship using the present invention, it is preferable that the mounting part of the coil is a part excluding the hatch combing part of the ship hatch. It is preferable that a complete bundling coil is disposed in advance in the hatch combing portion. In addition, a perfect binding coil means the coil with which the conventional packing was given, such as the coil which performed the banding of the vertical / horizontal direction of three.

  According to the present invention, even if it is a simple packing, it can be delivered to a customer in a normal packing form even if it is stacked and transported on a ship or the like. Further, the processing time required for coil processing / conveyance can be shortened. Furthermore, when the coil processing / conveyance according to the present invention is applied to a hot-rolled coil with a black skin, the conveyance to the cooling yard and the cooling in the normal process are omitted. Even if the production is continuously performed, the cooling yard can be prevented from becoming full, and a situation where production is delayed due to a shortage of the cooling yard can be avoided. In this case, the present invention can also be applied to export materials that involve long-distance conveyance.

  Hereinafter, the case where the present invention is applied to the processing and conveyance of a hot-rolled coil will be described as a representative example. FIG. 1 is a conceptual diagram showing a layout of a processing line of a hot-rolled coil with a black skin embodying the present invention. The hot-rolled steel strip S is hot-rolled to a final thickness by a continuous finish rolling mill (not shown) in the same manner as in a normal process, and while running in a cooling zone 13 extending from the rear of the finish rolling mill to the coiler 14, After being cooled to a predetermined temperature by, the coiler 14 takes up.

  In this example, the vertical banding performed in the coiler 14 after the winding is performed by at least two hooks. This double hook is a normal band hook, that is, a band-shaped member made of a cold-rolled steel plate having a thickness of about 1.6 mm and a width of about 25 mm is wound around a so-called vertical band hook at the center in the coil width direction, and the wound end portion The step of fixing with caulking metal fittings so as not to loosen is performed twice, that is, the banding is performed twice. FIG. 2 shows an example of two vertical bands 7 applied to the hot rolled coil 1. FIG. 2 shows an example in which two vertical bands are applied at substantially the same location of the coil as an example of binding two wires inside the coiler. However, one wire is added inside the coiler, and further binding is performed outside the coiler. There may be three or three books. In consideration of work efficiency, in the present invention, it is desirable to perform at least two vertical banding in the coiler 14 after winding the coil in the coiler 14 shown in FIG.

  As described later, at least two hooks are used when, for example, the coils are shifted from each other due to shaking, vibration, etc. during the navigation of the ship, when being stacked and transported on a transport means such as a ship. This is because even if one of the two applied bands is slightly damaged, the other remains in a healthy state, thereby enabling the hot rolled coil 1 to be delivered to the customer in a normal package. Note that this vertical banding may be performed twice at the same location, for example, as shown in FIG. 4, that is, overlapped on the previous banding, or as shown in FIG. The next banding may be performed immediately next to the banding. The number of vertical bands may be two or more, but it is practically four. Exceeding 4 is excessive binding. Preferably it is up to 3, preferably 2.

  In this example, two vertical banding on the hot rolled coil 1 is performed as a double vertical banding 7 as shown in FIG. 4, and this is immediately carried out to the temporary storage yard 19. The carry-out temperature to the temporary storage yard is about 500 to 600 ° C. The conveyance to the cooling yard 17 performed in the normal process and the cooling there are not performed. This temporary storage yard 19 may be prepared in particular, but it is also possible to divert the place for transporting the hot-rolled coil 1, for example, a ship loading / unloading yard as shown in FIG.

  The hot-rolled coil 1 carried out to the temporary storage yard 19 is left in that state, for example, until it is loaded, and is naturally allowed to cool to a temperature of 100 ° C. or lower.

  In this way, at least two vertical banding is performed, and the hot-rolled coil 1 carried out to the temporary storage yard 19 is loaded on a ship 23 or the like which is a conveying means. This loading is performed by usual means, for example, a method of stacking the hot rolled coils 1 in multiple stages using a quay crane 21. At that time, in the present invention, in order to prevent breakage / breakage of the two or more bands, the cushioning material 9 is used for stacking as shown in FIG. That is, the present invention is based on the knowledge that the cause of breakage of the binding band in the conveyance process is mainly due to crushing due to contact with other coils or with the vertical bands of other coils. A cushioning material is used as a means for preventing this.

  As shown in FIG. 3, the buffer material 9 is disposed between the lower coil group A and the upper coil group B of the hot-rolled coils 1 to be stacked. In addition, it must be of a thickness that does not easily deviate even when subjected to shaking, vibration, etc. during transportation by a ship or the like. The minimum thickness is that which prevents the vertical bands of the lower coil group A and the upper coil group B from interfering with the hot-rolled coil 1 of the coil group B, i.e., the vertical band. Must exceed thickness. In addition, when stacking, considering that the position of the vertical band overlaps between the lower coil group A and the upper coil group B, the thickness of the cushioning material 9 is equal to the vertical band of the lower coil group A. It is desirable to exceed the sum of the thickness and the thickness of the vertical band of the upper coil group B.

  By providing this thickness, it is possible to prevent the vertical band from coming into contact with other coils and breaking, and further coming into contact with the vertical bands of other coils and breaking. As the cushioning material 9 having such a function, if the hot-rolled coil of the vertical band using the band-shaped member made of cold-rolled steel sheet having a thickness of about 1.6 mm and a width of 25 mm is used, the vertical band is doubled. In the applied state, for example, a buffer material having a thickness of about 10 mm may be used. When a rubber band is used, a material having a thickness of about 30 mm can be used in consideration of deformation. Moreover, the cedar board material laid on the bottom of the ship can be used as it is.

  FIG. 4 is a sketch showing a state in which coiled black skin materials are stacked using a buffer material. As shown here, the cushioning material 9 is placed in two places across the vertical band 7 that is doubled over the hot-rolled coil, and its thickness is determined by the vertical band 7 of the upper hot-rolled coil and the lower hot-rolled coil. The thickness is such that the lateral bands 7 of the coil 1 do not interfere with each other.

  In the present invention, since the hot-rolled steel strip that has been finish-rolled in this way is immediately carried out to the temporary storage yard 19 in a state in which only two vertical bandings are applied to the substantially central portion in the width direction of the coil, The conveyance to the cooling yard 15 performed in the normal process and the cooling there are not performed. As a result, even if the hot-rolled coil 1 is continuously produced, the cooling yard 15 can be prevented from becoming full, and a situation in which production is hindered due to a shortage of the cooling yard can be avoided (Fig. 1). Further, in the present invention, the hot-rolled coils are bound only by at least two vertical banding applied in the center in the width direction, but when transporting this by stacking, the lower coil group and the upper coil Since a cushioning material is arranged between the side coil groups so that the horizontal banding does not interfere with each other, the coil binding is in a state where only two vertical banding is applied at the position in the width direction. Regardless, damage to the band during conveyance is prevented, and the hot rolled coil can be supplied to the consumer in a normal package by the vertical band stretched over the hot rolled coil.

  Although the coil used in the present invention is a simple package, when the coil is loaded into the hatch of the ship and transported, the coil loaded on the hatch combing portion is damaged particularly when the coil is unloaded. There is a danger to do.

  FIG. 5 is a schematic cross-sectional view showing a state where coils are loaded in the hatch 24 of the ship 23. As shown in FIG. 5, the hatch 24 is formed by a hatch floor 25 that extends substantially horizontally, a rising wall 27 from the hatch floor 25, and a folded portion 28 that is folded substantially horizontally from the top.

  In the present invention, when a coil is loaded on a ship hatch having such a configuration, the hatch coaming unit 27 is loaded with a complete binding coil 32 in advance, and then the coil 31 that has been bound according to the present invention is mounted. Try to load. At that time, as already described, the cushioning material 9 is arranged between the coils. The coil 31 that has been bound according to the present invention refers to a simple packing coil as described above.

  By loading in this way, coil damage that occurs during coil unloading can be avoided. That is, in normal coil loading / unloading, the coil loaded in a place excluding the hatch combing portion is lifted up by inserting a lifting tongue into the coil center hole 33 according to a normal procedure. In this case, a large coll damage does not occur when the coil is unloaded. Therefore, the coil which performed the binding which concerns on this invention can be loaded in the location except a hatch combing part.

  However, the coil loaded on the hatch combing part is not forcibly lifted by the forklift carried on the hatch floor, etc. Is then pulled out to the center of the hatch and then lifted up by inserting a lifting tongue into the coil center hole 33 in accordance with normal procedures. For this reason, it is preferable to avoid placing and loading the simple packing coil used in the present invention on the hatch combing portion because it is easy to pack. From this point of view, in the present invention, it is recommended that the simple packing coil be loaded only on the portion other than the hatch combing portion of the ship hatch, and the complete bundling coil 32 be disposed on the hatch combing portion.

  As described above, the embodiment has been described by taking the case where the present invention is applied to the processing / conveyance of the hot-rolled coil as a representative example, but the object of the processing / conveyance is not limited to the hot-rolled coil. For example, even if it is a cold-rolled coil, it can be transported for a relatively short time and in a short distance, and only a simple vertical band similar to that applied to the hot-rolled coil is applied. Can be stacked and transported using

It is a conceptual diagram which shows the layout of the processing line of the hot rolling coil which implements this invention. It is a perspective view which shows the banding state of the hot rolled coil when implementing this invention. It is a conceptual diagram which shows the state of the stacking | stacking when conveying a hot-rolled coil by this invention. It is a sketch which shows the state which stacked the hot-rolled coil using the buffer material. It is typical sectional drawing which shows the state which loaded the coil in the hatch of a ship. It is a sketch which shows the shipment state of the conventional hot rolling coil.

Explanation of symbols

1: Hot rolled coil
3: Vertical band
5: Horizontal band
7: Vertical band
9: cushioning material
13: Water-cooled cooling zone
14: Coiler
15: Cooling yard
17: Coil transfer line
19: Temporary storage yard
21: Quay crane
23: Ship
24: Ship hatch
25: hatch floor
26: Combing club
27: Rising wall (of hatch)
28: Horizontal folding part
31: Coil for binding according to the present invention
32: Complete binding coil
33: Coil center hole

Claims (6)

A coil banding and unloading stage for applying at least two vertical bandings to the coil wound by the coiler and immediately unloading the coil to the temporary storage yard;
Storing the coil in the temporary storage yard;
A coil processing / conveying method, wherein the stored coils are stacked and conveyed via a cushioning material. The coil processing / conveying method according to claim 1, wherein the cushioning material is disposed between the coils with the banding portions of the coils sandwiched therebetween so that the vertical banding portions of the coils do not interfere with each other. The coil processing / conveying method according to claim 1, wherein the coil is a hot-rolled coil. A conveying coil in which the coil wound by the coiler is only provided with at least two vertical banding. When loading and transporting the coil according to claim 4 in a hatch of a ship, the mounting part of the coil is a part excluding the hatch combing part of the ship hatch. A coil processing / conveying method according to claim 1. The coil processing / conveying method according to claim 7, wherein a complete bundling coil is disposed in advance in a hatch combing portion of a ship hatch.

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