JPS62166001A - Slab forming device train - Google Patents

Abstract

PURPOSE:To efficiently form a slab having high quality with a compact installation by executing cross reduction from one end of the slab and executing the same from the other end in the mid-way then subjecting the slab to light draft of edger rolls and horizontal rolling. CONSTITUTION:The heated slab 7 is passed through a descaling device 3 to a cross press device 4. The slab is first subjected to the cross reduction to a required position from a rear end 7a side toward front end 7b side in the progressing direction of the line, then dies 8 are exchanged and the slab 7 is subjected to press cross rolling from the front end 7b side toward the progressing direction of the line. The slab is successively subjected to the cross light draft by the edger rolls 5 to smoothly shape the transverse end faces; thereafter, the slab is subjected to reverse rolling by a horizontal rolling mill 6 to form the slab having a required thickness. The molding operation of the slab is efficiently executed with the min. device arrangement while the excellent effect of a cross press device 4 is utilized to the max. extent.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a slab forming apparatus array.

[Prior art] In recent years, compared to the roll method width rolling, a large amount of width reduction can be obtained in one step, the crimping effect of the internal porosity of slab etc. is large, and the downstream rolling process is improved because dog bones do not occur. Various studies have been conducted to reduce the width of thermal 1:η materials using a width reduction press because it has excellent effects such as less formation of fishtails during molding.

[Problems to be solved by the invention] However, a slab forming line that can form slabs efficiently and with high quality while maximizing the effect of press width reduction has not yet been realized. At present, the advantages of breath molding cannot be fully utilized.

The present invention has been developed by focusing on these points, so while making maximum use of the excellent features of the width reduction breath,
- The purpose is to enable efficient slab forming with easy installation and leakage.

[Means for Solving the Problems] The present invention is an attempt to solve the above-mentioned technical problem, and involves performing width reduction from one end of the slab on the downstream side of the heating furnace, and performing width reduction from the other end midway through. A width brace device is provided,
At the same time, on the downstream side between the width press bags, one roll for rolling the slab (1 inch wide) is installed, and a horizontal rolling roll is installed on the downstream side of the edge 17-〇-roll. [This relates to a slab forming apparatus array characterized by the following.

[Function 1] Therefore, in the present invention, the width reduction of the slab is performed from one end of the slab using a width press device, and from the other end midway through to reduce the fishtail of the slab, and then a light reduction of the edger roll is performed. After smoothing the end face shape of the slab by reducing the width of the slab, horizontal rolling is performed using a horizontal rolling mill, thereby making it possible to form the slab efficiently and with high quality using compact equipment.

[Example] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an example of the present invention, in which a common descaling device 3 is provided in front of heating furnaces 1 and 2 installed in parallel, and a width brace W is provided downstream of the descaling device 3. A device 4, an edger roll 5, and a horizontal rolling mill 6 are installed in sequence to constitute a slab forming line.

The slab 7 heated by the heating furnace 1.2 is first removed with oxidized scale and the like by the descaling device 3, and then reduced in width by the width pressing device 4.

At this time, the slab 7 first passes through the width brace device 4, and then moves from the rear end 7a side in the line traveling direction to the front end 7b side (in the opposite direction to the line traveling direction)
After the width is rolled down to the required position, the die 8 of the width press device 4 is replaced as shown in FIG. 2 (8), and the slab 1 is now press width rolled from the front end 1b side toward the line advancing direction. .

Generally, when a slab is rolled down across the width of the slab from #]@ to the rear end at once, a large fishtail b is formed at the rear end of slab a, as shown in Figure 3, and this slab is rolled in a horizontal rolling mill. When rolled, the fishtail becomes even longer, resulting in a decrease in product yield.

On the other hand, as described above, if the slab 7 is subjected to the width reduction from both ends, the slab 7 can be made into a nearly rectangular shape as shown in FIG. 2 fB). The mold 8 can be replaced by changing the orientation of the mold, or by replacing it with another mold, or by moving the mold vertically if the mold has a vertically symmetrical shape. A switchable one may also be used.

The width reduction by the width press device 4 produces some unevenness on the rolled surface, so the width end surface is shaped smoothly by light width reduction by the edger D-roll 5, and then the horizontal rolling mill 6 Reverse rolling is performed to form a slab of the required thickness.

According to the above-described slab forming line, the slab forming operation can be efficiently performed while maximizing the excellent effects of the width press device 4 with the minimum II arrangement.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and various changes may be made without departing from the gist of the present invention.

[Effects of the Invention] As described above, according to the slab forming apparatus array of the present invention,
The width reduction of the slab is performed from one end of the slab using a width press device, and the fishtail of the slab is reduced by performing it from the (I!! After that, we use a horizontal rolling mill to roll and form the slab, so we can take advantage of the excellent features of press width reduction while efficiently forming high-quality slabs with fewer fishtails using compact equipment. It can be played.

[Brief explanation of drawings]

Figure 1 is an overall explanatory diagram showing one embodiment of the present invention, and Figure 2 (
5) (B) is an explanatory diagram of the pressing method using the width pressing device,
FIG. 3 is an explanatory diagram of a slab when the width of the press is reduced in only one direction. 1.2 is a heating furnace, 3 is a descaling device, 4 is a width press device, 5 is an edger roll, 6 is a horizontal rolling mill, 7 is a slab, and 8 is a mold not shown.

Claims (1)

[Claims] 1) A width press device is provided on the downstream side of the heating furnace to perform width reduction from one end of the slab and from the other end midway through, and a light width reduction of the slab is provided downstream of the width press device. 1. A slab forming apparatus array characterized in that a horizontal rolling mill is provided on the downstream side of the edger roll.