JPH0140681B2 - - Google Patents
Info
- Publication number
- JPH0140681B2 JPH0140681B2 JP19533082A JP19533082A JPH0140681B2 JP H0140681 B2 JPH0140681 B2 JP H0140681B2 JP 19533082 A JP19533082 A JP 19533082A JP 19533082 A JP19533082 A JP 19533082A JP H0140681 B2 JPH0140681 B2 JP H0140681B2
- Authority
- JP
- Japan
- Prior art keywords
- flange
- rough
- slab
- rolling
- groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 31
- 239000010959 steel Substances 0.000 claims description 31
- 238000005096 rolling process Methods 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 13
- 238000007688 edging Methods 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims 1
- 238000007796 conventional method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000005530 etching Methods 0.000 description 2
- 235000021028 berry Nutrition 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000020030 perry Nutrition 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/08—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
- B21B1/088—H- or I-sections
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Description
この発明は、粗形鋼片の圧延法および圧延用ロ
ールに関し、なかでもＨ形鋼などウエブとフラン
ジを有する形鋼の圧延成形に供する粗形鋼片を、
とくにスラブより成形する有利な製造技術を提案
しようとするものである。
省エネルギー、歩留向上、材料の表面および内
部の品質向上などを目的として、Ｈ形鋼などウエ
ブとフランジを有する形鋼を、連続鋳造にて製造
されたブルーム（矩形鋼片）、ビームブランクま
たはスラブ（ヘン平鋼片）などを素材として圧延
する方法が、近年採用されることが多くなつてい
る。
その中で、断面の大きなＨ形鋼は、連続鋳造の
比較的簡単なスラブから圧延することがとくに有
利である。
たとえば第１図のスラブ１から、第２図のＨ形
鋼用粗形鋼片２を圧延する方法として第３図ａの
ようにスラブ１を水平姿勢より90゜転回し、底に
突起（ベリー）３を有する孔型４で、スラブの幅
方向に圧下を加えることにより、スラブ１の短辺
中央に溝５をつけ、次に第３図ｂに示すように、
ほぼ同じ形状のペリー６で案内することにより材
料７の片寄り、倒れを防止しながら、孔型８で所
定の高さH2まで複数バスにわたつて圧延し、上
下端を幅広がりさせて、フランジを成形しつつ断
面７′の形状にする。その後第３図Ｃに示すよう
な底が平たんな孔型１０で断面７′のフランジ中
央に形成されていた溝１１を消去し、ほぼＩ形の
断面９として外面平たんなフランジ部を成形し、
ついでこれを、90゜転回し第３図ｄに示すように
造形孔型１２で粗形鋼片２に圧延する方法があ
る。
またそのほかには、第４図に示すように、幅小
から幅大の多数の箱型孔型造形系列を有するロー
ル対１３で、順次幅圧下を加えてフランジ部を成
形し、その後90゜転回し、造形孔型にて、第３図
ｄについて示したのと同様に粗形鋼片２に圧延す
る方法もある。
一般的に限られたロール胴長に対して圧延可能
な製品寸法は、必要な孔型が多いほぼ小さくなる
が、従来の方法では、フランジ部を形成するエツ
ジング圧延工程において、ベリー溝付圧延用孔型
フランジ幅出し圧延用孔型及びフランジ外面平坦
化圧延用孔型の３つの孔型かまたはフランジ部を
段階的に形成していく多数の箱形孔型が必要であ
り、何れにしても、製品寸法が大きいとき適合し
難い。
そこでこの発明は、フランジ部を形成するエツ
ジング圧延工程を２つの孔型だけで行なわせ、従
来の方法では、ロール胴長の制限より圧延不可能
であつたような大きな製品サイズをも一対のカバ
ーロールにて圧延可能にすることを目的としてい
る。
発明者らは
１ スラブの短辺部を幅方向に圧下すれば、その
両端部にふくらみを生じ、ドツグボーン形状に
なること。
２ この際フランジ外面中央部に凸部を形成し、
孔型には、それと対応する底溝を設けると、２
つのはめ合い関係により、材料の片寄り、倒れ
を生ずることなく圧延ができること。
に着目して以下の検討を行い、この発明による上
述問題点の解決を図つたものである。
この発明は、Ｈ形鋼などウエブとフランジを有
する形鋼の圧延成形用粗形鋼片をスラブより成形
するに際し、該スラブの幅方向に圧下を加えてス
ラブ幅方向両側にフランジ部を形成するエツジン
グ圧延工程にてそのフランジ外面中央部にセンタ
リング用凸部を形成する工程と、フランジの幅出
しを行なう工程とを、Ｈ型粗形鋼片のフランジ幅
に対応した溝幅の孔型でその溝底の中央に材料ス
ラブの厚みとほぼ等しい底溝を持つ同一の孔型で
連続的に行ない、その後フランジ外面中央部の凸
部を平たん化するとともにフランジ部を形成した
後、造形孔型にて粗形鋼片に成形すること
を上記の課題解決手段とするものであり、また
ロール胴周に、粗形鋼片のフランジに対応した溝
幅で、その溝底の中央に材料スラブの厚みとほぼ
等しい底溝をもつ第１の孔型と、粗形鋼片のフラ
ンジに対応した溝幅で、その溝底が平たんな第２
の孔型および粗形鋼片の外形輪郭と対応した造形
孔型とをそなえた一対のカリバロール
を上記の方法の実施に直接使用する粗形鋼片の
圧延用ロールとして、新たに提案するものであ
る。
この発明では、Ｈ形鋼などウエブとフランジを
有する形鋼の粗形鋼片をスラブより成形するに際
してフランジ部を形成するエツチング圧延工程を
２つのカリバーだけで有利に行なう方法を提供す
るものである。
第５図ａに示す素材のスラブ１は、まず第５図
ｂに示すようにカリバーロール対１４の第１の孔
型１５のセンタリング用底溝１５′で、長辺の上
下端の短辺部を案内しつつ、そのまま第５図ｃに
示すように、フランジ幅Ｂが充分出る所定の高さ
H3まで、フランジ幅出し圧延を行ない、断面１
７が断面１８の形状になるまで加工する。
この時、フランジ外面中央部にはセンタリング
用底溝１５′と対応する凸部１９が形成され、こ
の凸部１９をセンタリング用底溝１５′で案内し
て材料の片寄り、倒れを防止している。
その後、第５図ｄの溝底が平たんで底溝を有し
ない第２の孔型１６にて、フランジ外面中央部に
形成された凸部１９を平たん化するとともに、フ
ランジ部を形成し、断面２０を得て第５図ｅの造
形孔型１３に通して粗形鋼片２を圧延する。
実施例としてH36″×161/2″用の粗形鋼片（ウ
エブさ1180mm×フランジ幅540mm）を、従来の
方法では、圧延不可能であつたロール胴長3400mm
のロールを使つて260mm厚×1900mm幅スラブから
圧延した場合のバススケジユールを第６図に示す
カリバーロールを用いて実行した例を表１に示
す。
The present invention relates to a method for rolling a rough-shaped steel piece and a rolling roll, and in particular, to a rolling method for a rough-shaped steel piece, and in particular, a rough-shaped steel piece used for rolling forming of a section steel having a web and a flange, such as an H-shaped steel.
In particular, it is intended to propose an advantageous manufacturing technique for molding from slabs. Blooms (rectangular steel billets), beam blanks, or slabs are produced by continuous casting of H-beam steel sections with webs and flanges for the purpose of saving energy, improving yields, and improving the surface and internal quality of materials. In recent years, a method of rolling steel sheets using materials such as Henpei steel billets has been increasingly adopted. Among these, it is particularly advantageous for H-beams with large cross sections to be rolled from relatively simple continuous cast slabs. For example, as shown in Figure 3a, the slab 1 is turned 90 degrees from the horizontal position as shown in Figure 3a, and a protrusion (berry) is rolled on the bottom of the slab 1 shown in Figure 1. ) 3 in the widthwise direction of the slab, a groove 5 is formed in the center of the short side of the slab 1, and then as shown in FIG. 3b,
While preventing the material 7 from shifting or falling by guiding it with a perry 6 of almost the same shape, the material 7 is rolled over multiple buses to a predetermined height H 2 using a groove die 8, and the upper and lower ends are widened. While forming the flange, it is shaped into a cross section 7'. Thereafter, the groove 11 formed at the center of the flange of the cross section 7' is removed using a hole mold 10 with a flat bottom as shown in FIG. death,
Then, there is a method of turning this by 90 degrees and rolling it into a rough shaped steel piece 2 using a forming hole die 12 as shown in FIG. 3d. In addition, as shown in Fig. 4, the flange portion is formed by successively applying width reduction using a pair of rolls 13 having a large number of box-shaped hole forming series from small widths to wide widths, and then rotated 90 degrees. However, there is also a method of rolling into a rough-shaped steel billet 2 in a forming hole die in the same manner as shown in FIG. 3d. In general, the product dimensions that can be rolled for a limited roll body length are generally small due to the large number of holes required, but in the conventional method, in the edging rolling process to form the flange, Either three hole types, a hole type for rolling the flange width and a hole type for flattening the outer surface of the flange, or a large number of box-shaped holes for forming the flange portion in stages are required. , it is difficult to adapt when the product size is large. Therefore, the present invention allows the edging rolling process for forming the flange portion to be performed using only two holes, so that it is possible to roll products of large size that could not be rolled due to the limited roll body length using the conventional method. The purpose is to make it possible to roll it with rolls. The inventors discovered the following: 1. When the short side of a slab is rolled down in the width direction, a bulge is generated at both ends, resulting in a dogbone shape. 2 At this time, a convex portion is formed in the center of the outer surface of the flange,
If the hole mold is provided with a corresponding bottom groove, 2
Due to the fitting relationship between the two, rolling can be performed without causing the material to shift or fall. The following study has been carried out focusing on the above, and the present invention has attempted to solve the above-mentioned problems. This invention involves forming flanges on both sides of the slab by applying pressure in the width direction of the slab when forming a rough shaped steel piece for rolling forming of a section steel such as an H-beam having a web and a flange from a slab. In the edging rolling process, the process of forming a centering convex part at the center of the outer surface of the flange and the process of width-aligning the flange are performed using a hole with a groove width corresponding to the flange width of the H-shaped rough section. The same hole mold with a bottom groove approximately equal to the thickness of the material slab in the center of the groove bottom is used continuously. After that, the convex part at the center of the outer surface of the flange is flattened and the flange part is formed, and then the molding hole mold is The method of solving the above problem is to form the material into a rough-shaped steel slab using The first hole type has a bottom groove that is approximately equal to the thickness, and the second hole type has a flat groove bottom and has a groove width that corresponds to the flange of the rough shaped steel piece.
This paper proposes a pair of Caliba rolls having a hole shape corresponding to the outer contour of the rough-shaped steel billet and a forming hole shape that corresponds to the outer contour of the rough-shaped billet as rolling rolls for the rough-shaped billet that can be directly used in carrying out the above method. be. The present invention provides a method for advantageously performing the etching rolling process for forming a flange portion using only two calibers when forming a slab of a rough section steel piece having a web and a flange, such as an H section steel. . First, as shown in FIG. 5b, the slab 1 of the material shown in FIG. While guiding the flange width B, as shown in Figure 5c,
Perform flange width rolling until H 3 , and cross section 1
7 is processed until it has the shape of cross section 18. At this time, a protrusion 19 corresponding to the centering bottom groove 15' is formed at the center of the outer surface of the flange, and this protrusion 19 is guided by the centering bottom groove 15' to prevent the material from shifting or falling. There is. Thereafter, the convex portion 19 formed at the center of the outer surface of the flange is flattened using a second hole mold 16 with a flat groove bottom and no bottom groove as shown in FIG. 5d, and a flange portion is formed. , a cross section 20 is obtained and the rough shaped steel piece 2 is rolled through the forming hole die 13 of FIG. 5e. As an example, a rough-shaped steel billet for H36" x 161/2" (web width 1180mm x flange width 540mm) was rolled with a roll body length of 3400mm, which was impossible to roll using the conventional method.
Table 1 shows an example of the bus schedule for rolling a 260 mm thick x 1900 mm wide slab using the caliber roll shown in Figure 6.
【表】
カリバーロール形状は、１例として第６図に示
すように、フランジ外面中央部で、とくにセンタ
リング用凸部１９を形成するために、スラブ短辺
幅をほぼ同じ幅の底溝１５′を、第１孔型１５の
溝底の中央部に旋削し、また同時にフランジ幅出
しを行なえるように、材料の幅広がりを拘束しな
い溝幅とした第１の孔型１５と、この第１の孔型
１５で形成されたセンタリング用凸部１９を平た
ん化し、かつフランジ部の形成を行なう第２の孔
型１６および最後に粗形鋼片２の仕上げを司る造
型孔型１３の３つの孔型からなる。
第１の実施例にて、No.３（第１の孔型）、No.２
（第２の孔型）でのエツジング圧延工程での延び
率は約10％であり、圧延最終延び率では約60％で
あつた。
この発明によつて、スラブよりエツチング圧延
工程にて、２つの孔型だけを用い、ロール胴長に
由来した制限を受けることなく、材料の片寄り、
倒れを防止して、大きな製品サイズのＨ形鋼など
の粗形鋼片に至る圧延を有利に可能とすることが
できる。[Table] For example, as shown in FIG. 6, the shape of the caliber roll has a bottom groove 15' that has approximately the same width as the short side width of the slab in order to form a centering convex part 19 in the center of the outer surface of the flange. is turned into the center of the groove bottom of the first hole mold 15, and the first hole mold 15 has a groove width that does not restrict the spread of the material so that the flange width can be simultaneously adjusted. The second hole 16 flattens the centering convex portion 19 formed by the hole 15 and forms the flange portion, and finally the forming hole 13 controls the finishing of the rough shaped steel piece 2. It consists of a hole type. In the first example, No. 3 (first hole type), No. 2
The elongation rate in the edging rolling step (second groove type) was about 10%, and the final rolling elongation rate was about 60%. With this invention, in the etching rolling process from a slab, only two grooves are used, and there is no restriction due to the roll body length, and the unevenness of the material can be reduced.
It is possible to prevent collapse and advantageously enable rolling into rough-shaped steel pieces such as H-beams of large product size.
第１図はスラブの断面形状、また第２図は粗形
鋼片の断面形状を、それぞれ例示した断面図であ
り、第３図ａ〜ｄは従来法による圧延工程説明
図、第４図は他の従来例の説明図、第５図ａ〜ｅ
は、この発明による圧延工程の説明図であり、第
６図は、この発明の圧延用カリバーロールの孔型
説明図である。
１３……造形孔型、１４……底溝、１５……第
１の孔型、１６……第２の孔型。
Fig. 1 is a cross-sectional view illustrating the cross-sectional shape of a slab, and Fig. 2 is a cross-sectional view illustrating the cross-sectional shape of a rough shaped steel piece. Explanatory diagrams of other conventional examples, Figures 5 a to e
6 is an explanatory diagram of the rolling process according to the present invention, and FIG. 6 is an explanatory diagram of the groove shape of the caliber roll for rolling according to the present invention. 13... Molding hole mold, 14... Bottom groove, 15... First hole mold, 16... Second hole mold.
Claims (1)
圧延成形用粗形鋼片をスラブより成形するに際
し、 該スラブの幅方向に圧下を加えてスラブ幅方向
両側にフランジ部を形成するエツジング圧延工程
においてそのフランジ外面中央部にセンタリング
用凸部を形成する工程とフランジの幅出しを行う
工程とを、Ｈ形粗形鋼片のフランジ幅に対応した
溝幅の孔型でその溝底の中央に材料スラブの厚み
とほぼ等しい底溝を持つ同一の孔型で連続的に行
い、その後フランジ外面中央部の凸部を平たん化
するとともにフランジ部を形成した後、造形孔型
にて粗形鋼片に成形すること を特徴とする粗形鋼片の圧延法。 ２ ロール胴周の粗形鋼片のフランジに対応した
溝幅でその溝底の中央に材料スラブの厚みとほぼ
等しい底溝を持つ第１の孔型と、粗形鋼片のフラ
ンジに対応した溝幅でその溝底が平たんな第２の
孔型及び粗形鋼片の外形輪郭と対応した造形孔型
とをそなえた一対のカリバーロールからなる粗形
鋼片の圧延用ロール。[Claims] 1. When forming a rough shaped steel piece for rolling forming of a section steel such as an H section steel having a web and a flange from a slab, rolling is applied in the width direction of the slab to form flange portions on both sides in the width direction of the slab. In the edging rolling process to form the flange, the process of forming a centering convex part at the center of the outer surface of the flange and the process of width-aligning the flange are performed using a hole shape with a groove width corresponding to the flange width of the H-shaped rough section. The process is carried out continuously using the same hole type with a bottom groove approximately equal to the thickness of the material slab in the center of the groove bottom, and then the convex part at the center of the outer surface of the flange is flattened and the flange part is formed. A method of rolling a rough-shaped steel billet, which is characterized by forming it into a rough-shaped steel billet in a mold. 2. A first hole type having a groove width corresponding to the flange of the rough-shaped steel slab on the roll body circumference and a bottom groove at the center of the groove bottom that is approximately equal to the thickness of the material slab; A roll for rolling a rough-shaped steel billet, comprising a pair of caliber rolls having a second hole shape whose groove width is flat and a flat groove bottom, and a shaping hole shape corresponding to the external contour of the rough-shaped steel billet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19533082A JPS5985301A (en) | 1982-11-09 | 1982-11-09 | Method and roll for rolling rough shape billet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19533082A JPS5985301A (en) | 1982-11-09 | 1982-11-09 | Method and roll for rolling rough shape billet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5985301A JPS5985301A (en) | 1984-05-17 |
| JPH0140681B2 true JPH0140681B2 (en) | 1989-08-30 |
Family
ID=16339369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19533082A Granted JPS5985301A (en) | 1982-11-09 | 1982-11-09 | Method and roll for rolling rough shape billet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5985301A (en) |
-
1982
- 1982-11-09 JP JP19533082A patent/JPS5985301A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5985301A (en) | 1984-05-17 |
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