JPS6246242B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to rolling equipment that can be used commonly for tentering rolling in thick plate rolling and rough rolling in hot coil rolling.

Conventionally, the following two methods have been adopted to perform thick plate rolling and hot coil rolling in the same rolling equipment.

The first method incorporates a tenter rolling mill for performing tenter rolling for thick plate rolling in addition to hot coil rolling equipment. According to the method shown in FIG. 1, in the case of thick plate rolling, a slab is heated in a heating furnace 101 and then tenter rolled in a tenter rolling mill 102. First, the slab is rolled down in the longitudinal direction, and then rotated by 90 degrees on the turntable 103 and rolled to widen the width of the rolled material (slab) until it reaches a predetermined finished width. When the predetermined width dimension is reached, the direction is changed again by 90 degrees using the turntable 103, and the rough rolling mill 105 rolls the product in the longitudinal direction to the final product thickness. On the other hand, in the case of a hot-rolled coil, the tentering mill 102 is bypassed and the attached edger 104 and roughing mill 105 are used in combination to perform longitudinal rolling by a predetermined amount while controlling width expansion. Thereafter, the head is cut off by a crop shear 106, and then rolled by a finishing mill 107 to the thickness of the final product, and then wound by a down coiler 108. According to this method, the tentering rolling mill 102
Incorporating the turntable 103 increases the line length and increases the amount of equipment investment.

The second method, as shown in FIG. 2, mainly focuses on manufacturing hot-rolled coils. In the case of hot-rolled coil manufacturing, a material to be rolled heated in a heating furnace 201 is roughly rolled by a group of rough rolling mills 202, 203, 204, and 205, and then a cropper 206 is used to remove defective portions at the leading and trailing ends of the material to be rolled. After cutting off, finishing rolling is performed in the finishing rolling mill 207, and the down coiler 20
It is wound up at 8. On the other hand, when manufacturing thick plates, a vertical rolling mill (attached edger) 20
9, 210, 211 perform width direction rolling, and longitudinal direction rolling is performed by rough rolling mills 202, 203, 204,
The rolling mill 205 and finishing mill 207 may be used in whole or in part. Thereafter, the down coiler 208 is bypassed and the sheet is sent to the plate finishing line after the hot straightening machine 212. According to this method, the tentering function during thick plate production is limited to width direction rolling using a vertical rolling mill, that is, edging (width reduction rolling). It is difficult to manufacture plate products.

SUMMARY OF THE INVENTION An object of the present invention is to provide a rolling equipment that eliminates the drawbacks of the conventional equipment, is capable of rolling thick plates and hot coil rolling, and can shorten the rolling line compared to the conventional equipment. The configuration of the present invention to achieve such an object is to provide a vertical rolling mill adjacent to a rough rolling mill, install a turntable on at least one of the front and rear sides of the rough rolling mill, and install an intermediate turntable in the housing of the vertical rolling mill. It is characterized by being equipped with a detachable table roller.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be explained in detail below based on embodiments shown in the drawings.

FIG. 3 shows an embodiment of the present invention, in which figure a is a cross-sectional view in the line direction, and figure b is a cross-sectional view in the direction perpendicular to the line. As shown in the figure, the vertical rolling mill uses a top sliding beam 3 and a bottom sliding beam 2 to roll vertical rolls (edging rolls) 1 that are provided so as to be movable horizontally in a direction perpendicular to the line. The material to be rolled is rolled in the width direction. In the housing of this vertical rolling mill, an intermediate table roller 4 is housed using a bottom sliding beam 2. The intermediate table roller 4 is used when rolling a thick plate, and has both ends attached and supported by left and right support frames 5 connected by a beam, and a driving gear attached to the support frame 5. It is connected to the box 6 via a coupling 7, and includes the drive gear box 6 as one unit. Therefore, when taken out of the housing, the drive gear box 6
It is cut from the shaft 10 that transmits the rotation of the drive motor 9 at the coupling 8 portion of the input shaft and is transported out. This intermediate table roller 4 is introduced by being suspended from an overhead crane or the like between the front and rear top sliding beams 3 with the vertical roll 1 retracted, and a wedge mechanism 11 is installed on the bottom sliding beam 2. be used and fixed. The wedge mechanism 11 consists of a wedge-shaped stopper 12 and a screw mechanism 13 for propelling it, and is installed in a hole 14 of the bottom sliding beam 2 passed through in the line direction. On the other hand, a hole 15 into which a stopper 12 is fitted is also bored in the support frame 5 on the intermediate table roller 4 side. When inserting the intermediate table roller 4 into the vertical rolling mill housing, the vertical roll 1 is inserted with the vertical roll 1 removed, or the vertical roll 1 is opened to its maximum extent by increasing the maximum opening amount compared to the conventional one. It goes without saying that the number of intermediate table rollers 4 and the driving method are appropriately selected depending on various conditions such as the dimensions of the rolled material to be handled and operating conditions.

A rough rolling mill (not shown) is provided adjacent to the rear of the vertical rolling mill. This rough rolling mill is a known general horizontal rolling mill equipped with horizontal rolls. Furthermore, turntables (not shown) are installed before and after the rolling section consisting of the rough rolling mill and the vertical rolling mill. This turntable rotates the material to be rolled 90 degrees to perform tenter rolling, and rotates the material 90 degrees to change to longitudinal rolling.

Therefore, according to the rolling equipment of the present invention, during hot coil rolling, the intermediate table roller 4 is carried out of the housing of the vertical rolling mill to enable horizontal movement of the vertical roll 1, and the vertical roll 1 is moved horizontally. The material to be rolled is edged with the roll 1 to control width expansion, and rolled in the longitudinal direction with a rough rolling mill. After that, as described above, the leading and trailing ends of the defective material are removed by a crop shear, and then sent to finish rolling, and after being finished to a predetermined thickness, the product is wound up by a down coiler. On the other hand, when rolling a thick plate, the intermediate table roller 4 is fixed in the housing, and a turntable and a rough rolling mill are used to perform tentering rolling. That is, the material to be welded is rotated by 90 degrees on a turntable, and then introduced into a rough rolling mill via intermediate table rollers 4 and rolled. Then, when the width reaches a predetermined size, the direction is changed again by 90° and rolling is performed in the longitudinal direction.
In the case of thick plate rolling, it is a small slab for thick plate rolling that cannot be fed in the apron part of the vertical rolling mill using a conventional rolling equipment in which a vertical rolling mill and a horizontal rolling mill are arranged close to each other. Also, by rotating the table roller 4, it is possible to smoothly send the rolled material to the horizontal rolling mill. Also, in the case of small slabs, when the rough rolling mill is reversed and the slab is sent to the vertical rolling mill, there is a risk that the deformation (bending) will be large and the tip will be sent below the pass line, but it will rotate in the feeding direction. Since it is guided to the pass line by the table roller 4, accidents can be prevented. Moreover, it can withstand the impact load at that time.

FIG. 4 shows another embodiment of the invention. Figure a is a sectional view taken in a direction perpendicular to the line, and figure b is a sectional view taken in a direction perpendicular to the line. In this embodiment, the intermediate table roller 4 is fixed to the top sliding beam 3 side, and the support frame 5 is formed into a substantially inverted T shape so as to hang over the top sliding beam 3, and the flange portion thereof is fixed to the top sliding beam 3 side. 16 and is fixed to beam 3. Other possible fixing means include a link mechanism or a set pin.

Thus, according to the present invention, the tentering rolling of thick plate rolling and the rough rolling of hot coil rolling can be performed in the same rolling equipment. Moreover, the rolling line is shorter than the conventional one, which incorporates a tenter rolling mill and a roughing mill and uses them separately for each rolling process, and the same equipment (rolling mill) is always used regardless of thick plate rolling or hot coil rolling. The equipment operating rate is improved compared to the conventional method. Therefore, costs can be reduced.

[Brief explanation of the drawing]

FIGS. 1 and 2 are layout diagrams of conventional rolling equipment capable of rolling thick plates and hot coil rolling. Third
The figures are views showing an example of a vertical rolling mill and an intermediate table roller of the rolling equipment according to the present invention, in which a is a sectional view in the line direction and b is a sectional view in the direction perpendicular to the line. Fourth
The figures show another embodiment, in which a is a sectional view in the line direction and b is a sectional view in the direction perpendicular to the line. In the drawing, 1 is a vertical roll (edging roll),
4 is an intermediate table roller.

Claims (1)

[Claims] 1. A vertical rolling mill is provided adjacent to the rough rolling mill, and a turntable is installed at least one of the front and rear sides of the rolling mill, and an intermediate table roller is detachably installed in the housing of the vertical rolling mill. rolling equipment.