JPH10252217A - Transformed shape steel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a transformed shape steel, which is various in size and shape and which is hardly affected by a weight increase or cost increase, by using the shape steel, only the standardized one of which has been available heretofore. SOLUTION: The web parts of two pieces of shape steel are cut into two, upper and lower parts and in any similar shapes. The upper cut part 11 of one piece and the lower cut part 12 of the other piece are made to abut each other in the web part 9 cut before. The abutted part 10 is welded in order to regenerate two piecdes of shape steel with the web pierced with holes.

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manufacturing method for obtaining a shaped steel having a dimension and a shape which is deformed by using a commercially available fixed length and rated shaped steel.

2. Description of the Related Art Various types of steel, such as H-type steel, L-type steel, T-type steel and steel sheet pile, are commercially available as steel materials. Etc. are rolled and formed into a desired shape through a rolling mill.Therefore, there is only a certain standardized product in the market, and it is desirable to obtain a deformed or specially shaped steel. One day.

[0003] As a general method of manufacturing the H-section steel 50,
As shown in FIG. 5, the bloom material is roughly rolled by a breaktown rolling mill, and then, the intermediate rolling mill 51 is a universal rolling mill 51, a shaping mill 52, and an edge mill 53 forging, shaping, and shaping the flange tip. Is carried out. Thereafter, the H-section steel 50 is completed through steps such as finishing by a finishing universal rolling mill and flange correction.

[0004] For the above-mentioned rolling work, a huge amount of equipment investment such as the use of a control computer in addition to the rolling equipment and the execution of controlled cooling is required. Special steel bars cannot be easily met with demand. As described above, it has been difficult to respond to the social demands for diversification of cross-sectional sizes and high-mix low-volume production of section steels.

[Problems to be Solved by the Invention] Since the production of the shape steel itself is carried out by using a large-scale rolling equipment and accompanying technology such as computer control and cooling control, deformed shape steel or special shape steel is used. It is easy to imagine that if the shaped steel bars were forcibly manufactured, the manufacturing costs would rise extremely and would be unprofitable. Therefore, despite the fact that it was strongly desired to obtain a desired shape steel without causing any cost-up factor, and to be able to freely change its size and shape, there was no way to supply it. The present invention
The purpose is to obtain a mold steel having a changed shape and dimensions without causing cost-up.

[Means for Solving the Problems] The two mold steels are divided into upper and lower portions at the web portion into an arbitrary same shape, and another cut upper portion and a cut lower portion are joined to each other at the cut portion web portion, and welding is performed. This problem was solved by going and regenerating two mold steels each having a gap. Also, not the web part, but a notch of the same shape in the flange part,
When the flange portions are butted and welded to each other, a prism having an air gap is obtained. As a result, arbitrary shaped steel having different rated dimensions can be obtained.

[Operation] The dimensions and shape of a conventional mold steel are different from those of a conventional mold steel by dividing two mold steels into upper and lower two parts at the web part and arbitrarily arranging the same cross section. And because it can be regenerated as deformed steel with voids, new applications can be expected and the weight increase is small,
A new deformed steel with less cost-up factor can be obtained.

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view illustrating a method of manufacturing a deformation steel according to an embodiment of the present invention. FIG. 2 is another embodiment of the method for producing a deformed steel according to the embodiment of the present invention. FIG. 3 is a diagram showing an application example of the deformed steel according to the embodiment of the present invention. FIG. 4 is an example in which the method for producing deformed steel according to the embodiment of the present invention is applied to a prism.

As shown in FIG. 1 (A), two commercially available H-section steels 1 are used, and as shown in FIG. Web part 9 of H-section steel 1 using a laser cutting machine capable of cutting
And cut into two. Although the cutting shape is not particularly specified, when re-welding as described later, the shape is desirably a shape excellent in aesthetic sense in terms of design, and the molten surface is formed so as to retain the strength as an H-shaped steel. Therefore, it is desired that the shape of the reweld surface is sufficiently large so that the rewelded surface can be sufficiently obtained, and that the number of straight sections is generally large. Therefore, an arc-shaped welded surface or a shape with a small reweld surface even if it has decorativeness is not very preferable.

The cut upper part 11 of the H-shaped steel 1 divided into two parts is shown in FIG.
Another cutting upper part 11 is butted against each other so as to make (B),
The portion is subjected to butt welding 10 to reconstruct one H-section steel 2. Similarly, the cut lower part 12 is butt-welded to each other.
0 is performed to reconfigure the H-section steel 2 '. In this way, the restructured H-section steels 2 and 2 ′ have H in which the gaps 13 are clear in the web portion 9 and the dimensions of the web portion 9 are different.
Children's steel 2, 2 'appears.

The above is an example in which the web portion 9 of the H-shaped steel 1 is divided into two substantially along the center line. However, as another embodiment, the web portion 9 of the H-shaped steel 3 is分割 B 分割-▲ B 線 'line with an angle of. 2
When the butt welding 10 is performed so that the divided cut upper part 31 and another cut upper part 31 whose direction is changed by 180 degrees are as shown in FIGS. 2B and 2C, the width of the web part 9 is narrow at the tip and thin at the base. However, H-shaped steels 4 and 4 ′ having different diameters and a clear gap 13 are obtained. The tapered H-shaped steels 4, 4 'are suitable for, for example, a girder 15 of a steel structure having a cantilever 14 as shown in FIG.

Although the embodiment of the present invention has been described using the H-shaped steel 1, the present invention is not limited to the H-shaped steel 1. For example, a notch 8 is provided in the flange portion 7 of the When the butting solution 10 is used, a prism 6 having a notch 7 is obtained.

[Effects of the Invention] Conventionally, only a standard shaped steel could be obtained. However, in the deformed steel according to the present invention, any shape steel different from the standard steel can be easily obtained by devising a web cutting line. At the same time, since the air gap is provided in the web portion, the weight per unit volume of the mold steel is reduced, and as a result, the weight of the entire steel structure is also reduced. It will be easier. Since the manufacturing method is only fusion of the section steel and subsequent butt welding, the cost increase factor is small, the price up factor for the steel material is small, and it does not become a hindrance factor for the price for the steel structure. In addition, even if the steel mold is configured as a steel structure that is exposed to the outside, there are many advantages such as adding a design element to the shape of the voids so that there is a decorative element so that it will not be particularly unsightly even if left unattended. is there.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a method for producing a deformed steel according to an embodiment of the present invention.

FIG. 2 is another embodiment of the deformed steel according to the embodiment of the present invention.

FIG. 3 is a view showing a usage example of the deformable copper according to the embodiment of the present invention.

FIG. 4 is a view showing an example of use of a deformed steel according to an embodiment of the present invention applied to a prism.

FIG. 5 is a view showing a situation in which a conventional mold steel is manufactured.

[Explanation of symbols]

1,3: H-shaped steel 2, 2 ', 4, 4': deformed steel 5: channel steel 6: prismatic column 7: flange portion 8: notch 9: web portion 10: butt welding 11, 31: cut upper portion 12 , 3
2: Lower part of cutting 13: Void 14: Cantilever girder 15: Large beam 50: H-shaped steel 51: Universal rolling mill 52: Shaping rolling mill 53: Etsiya rolling mill

Claims (2)

[Claims] 1. A two-section steel is vertically divided into two parts at the web portion in an arbitrary same shape, and another cut upper portion and a cut lower portion are butted to each other at the web portion. A deformed steel that has been recycled as a steel. 2. A deformed steel which is characterized in that the flanges of two steel bars are cut out in an arbitrary same shape, the flanges are butted together, and welded to form a prism having an air gap.