JPH0696161B2 - Roll for reducing web thickness of profile - Google Patents
Roll for reducing web thickness of profileInfo
- Publication number
- JPH0696161B2 JPH0696161B2 JP63226561A JP22656188A JPH0696161B2 JP H0696161 B2 JPH0696161 B2 JP H0696161B2 JP 63226561 A JP63226561 A JP 63226561A JP 22656188 A JP22656188 A JP 22656188A JP H0696161 B2 JPH0696161 B2 JP H0696161B2
- Authority
- JP
- Japan
- Prior art keywords
- roll
- web
- profile
- thickness
- rolling
- 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 - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
- B21B27/028—Variable-width rolls
Landscapes
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） この発明は、Ｈ形、溝形あるいはこれに類似した形鋼の
製造の際とくに粗ユニバーサル圧延段階から仕上ユニバ
ーサル圧延段階に至るまでの間に用いて好適な圧延ロー
ルに関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to the production of H-shaped, grooved or similar shaped steel, particularly during the course from the rough universal rolling stage to the finish universal rolling stage. The present invention relates to a rolling roll suitable for use.
（従来の技術） 形鋼の製造では、ロールの頻繁な交換を要することなく
ウエブ高さを自由に調整するため、あるいは製品の寸法
精度の向上を図るためにその圧延過程で形材のウエブ部
を幅方向および厚み方向に繰返し圧下を加え所望のサイ
ズに仕上げる圧延方式が採用されていて、ここに形材の
ウエブ部を厚み方向に圧下するロールは、その表面が平
たんなものが使用されていた。(Prior Art) In the production of shaped steel, in order to freely adjust the height of the web without requiring frequent replacement of rolls or to improve the dimensional accuracy of the product, the web portion of the profile is rolled during the rolling process. A rolling method is adopted in which rolling is repeatedly performed in the width direction and the thickness direction to finish to a desired size, and a roll with a flat surface is used for rolling the web portion of the profile in the thickness direction. Was there.
（発明が解決しようとする課題） ところで上記の圧延方式では形材のウエブ部を幅方向に
圧下する時点でその両端部近傍が他の領域よりも大きく
変形し局部的な増厚現象を呈することがあり、ここにウ
エブ部をその厚み方向に圧下する通常のフラットロール
を作用させてもその部位における増厚傾向を完全に解消
するのは困難で、ウエブ部の変形等、製品の断面形状に
悪影響を及ぼす不利があった。(Problems to be solved by the invention) By the way, in the above rolling method, when the web portion of the profile is rolled down in the width direction, the vicinity of both end portions thereof is deformed more than other regions and a local thickening phenomenon is exhibited. However, it is difficult to completely eliminate the tendency of thickening at that portion even if an ordinary flat roll that rolls down the web portion in the thickness direction is applied here. There was a detrimental effect.
ウエブ部の幅方向における圧下の際に生じる局部的な増
厚を有利に解消できる圧延ロールを提案することがこの
発明の目的である。SUMMARY OF THE INVENTION It is an object of the present invention to propose a rolling roll that can advantageously eliminate a local thickening that occurs when the web portion is rolled down in the width direction.
（課題を解決するための手段） この発明は、形材のウエブ部を幅方向に少なくとも１回
圧下する工程を含む圧延過程で該形材のウエブ部をその
厚み方向に圧下するロールであって、該ロールは、ロー
ル軸とこのロール軸に保持されロール軸の軸方向に沿っ
て互いに逆向きに移動可能な少なくとも２つのロール本
体からなり、該各ロール本体はその外側端を起点とする
30〜50mmの領域に、形材のウエブ部を幅方向に圧下する
際に生じる局部的な増厚を防止する凸部を有することを
特徴とする形材のウエブ厚み圧下用ロールである。(Means for Solving the Problem) The present invention relates to a roll for rolling down a web portion of a profile in the thickness direction in a rolling process including a step of rolling down the web portion of the profile at least once. , The roll is composed of a roll shaft and at least two roll main bodies held by the roll shaft and movable in opposite directions along the axial direction of the roll shaft, and each roll main body has its outer end as a starting point.
A roll for reducing a web thickness of a profile, which has a convex portion in a region of 30 to 50 mm for preventing a local increase in thickness when the web portion of the profile is pressed in the width direction.
第１図にこの発明に従うウエブ厚み圧下用ロールを、そ
の下側半分について模式的に示す。図における番号１は
ロール軸、２はロール本体であり、このロール本体２に
はその外側端を起点とする30〜50mmの領域に、形材のウ
エブ部を幅方向に圧下する際に生じる局部的な増厚を防
止する、突出代がδになる凸部３が設けられており、ロ
ール本体２はロール軸１の軸方向に移動して、ロール幅
Ｗが適宜変更できるようになっている。FIG. 1 schematically shows a web thickness reducing roll according to the present invention in the lower half thereof. In the figure, reference numeral 1 is a roll shaft, 2 is a roll main body, and the roll main body 2 has a local area that occurs when the web portion of the profile is pressed down in the region of 30 to 50 mm starting from the outer end thereof. A convex portion 3 having a protrusion margin of δ is provided so as to prevent the excessive increase in thickness, and the roll body 2 moves in the axial direction of the roll shaft 1 so that the roll width W can be appropriately changed. .
（作 用） 以下この発明をＨ形鋼の製造を例として説明する。(Operation) The present invention will be described below by taking the production of H-section steel as an example.
通常、Ｈ形鋼を圧延によって製造する場合、例えば第２
図に示すような設備が用いられ加熱炉より搬出された形
材は図中の如き各段階を経ることによって所望のサイズ
に仕上げられる。ここにＨ形鋼のウエブ高さの調整は、
粗ユニバーサルミル群から仕上げユニバーサルミルに至
るまでの間の少なくとも１パスで形材のウエブ部を例え
ば第３図に示すようにその幅方向に所定量圧下すること
により調整される。Usually, when H-section steel is manufactured by rolling, for example,
The profile carried out from the heating furnace using the equipment as shown in the figure is finished into a desired size by going through each step as shown in the figure. Here, the adjustment of the web height of H-section steel is
It is adjusted by pressing the web portion of the profile for a predetermined amount in the width direction thereof in at least one pass from the group of coarse universal mills to the finish universal mill, as shown in FIG.
ところでこの場合、形材のウエブ部がウエブ厚み圧下用
ロールＨに接触するまでの間で比較的温度の高いウエブ
端部域すなわちＲ部近傍（端部から30〜50mm程度の範
囲）において局部的な増厚傾向を示し、以降の圧延過程
で形材のウエブ部をその厚み方向に圧下してもそれを解
消するのが困難であった。この領域におけるウエブ厚の
増加現象は形材の温度分布に依存し第４図に示すように
ウエブ厚の薄いもの程その傾向が大きい。By the way, in this case, until the web portion of the shape member comes into contact with the web thickness reducing roll H, the temperature is locally high in the edge region of the web, that is, in the vicinity of the R portion (range of about 30 to 50 mm from the edge). However, even if the web portion of the profile was pressed down in the thickness direction in the subsequent rolling process, it was difficult to eliminate it. The phenomenon of increasing the web thickness in this region depends on the temperature distribution of the profile, and as shown in FIG. 4, the tendency becomes greater as the web thickness becomes thinner.
そこでこの発明では、形材のウエブ部をその厚み方向に
圧下するウエブ厚み圧下用ロールの両サイド30〜50mmの
範囲に第４図に示すようなウエブ厚の増加分を解消し得
る0.5〜2.0mm程度の突出代になる凸部を設け、該増加分
を長手方向に延ばしウエブ面の平滑化を図る。Therefore, in the present invention, an increase in web thickness as shown in FIG. 4 can be eliminated in the range of 30 to 50 mm on both sides of the web thickness reducing roll that reduces the web portion of the profile in the thickness direction of 0.5 to 2.0. A convex portion having a protrusion margin of about mm is provided, and the increased portion is extended in the longitudinal direction to smooth the web surface.
なお上掲第１図にはロール幅の変更可能な幅可変ロール
を例として示したが、例えば第５図に示すように一体式
ロールであってもかまわない。Although the variable width roll whose roll width can be changed is shown in FIG. 1 as an example, it may be an integral type roll as shown in FIG. 5, for example.
（実施例） 第１図に示したウエブ厚み圧下用ロールによる圧下を経
て仕上げたＨ形鋼の幅方向における各点でのウエブ厚み
の増加量の測定結果を従来法に従って製造したＨ形鋼の
結果とともに第６図に示す。(Example) The measurement result of the increase amount of the web thickness at each point in the width direction of the H-section steel finished through the reduction by the web thickness reduction roll shown in FIG. The results are shown in FIG.
形材のウエブ部幅方向の圧下後に凸部を設けてロールに
よる圧下を施した場合には、ウエブ厚みがその幅方向に
おいて、ほぼ一定していることが確かめられた。It was confirmed that the web thickness was almost constant in the width direction when the convex portion was provided and the roll was pressed after the web member was pressed in the web width direction.
（発明の効果） この発明によれば、形材のウエブ部をその幅方向に圧下
して形鋼のウエブ高さを調整する圧延方式において回避
するのが困難であったウエブ部の局部的な増厚に起因し
た形状不良を防止して歩留りの向上を図ることができ
る。(Effects of the Invention) According to the present invention, it is difficult to avoid the web portion of the profile in the rolling method in which the web height of the shaped steel is adjusted by pressing down the web portion in the width direction. It is possible to prevent a defective shape due to the increase in thickness and improve the yield.
第１図はこの発明に従うウエブ厚み圧下用ロールの模式
図、 第２図はＨ形鋼を製造する設備のレイアウトを示す図、 第３図はウエブ幅方向の圧下要領を示す図、 第４図はウエブ厚の増加両とウエブ幅方向の圧下量の関
係を示すグラフ、 第５図はこの発明の他の例を示す図、 第６図はウエブ厚の増加量を測定した結果を示す図であ
る。 １……ロール軸、２……ロール本体 Ｗ……ロール幅FIG. 1 is a schematic view of a roll for reducing a web thickness according to the present invention, FIG. 2 is a view showing a layout of equipment for producing H-section steel, FIG. 3 is a view showing a reduction procedure in a web width direction, and FIG. Is a graph showing the relationship between the increase in web thickness and the amount of reduction in the web width direction, FIG. 5 is a diagram showing another example of the present invention, and FIG. 6 is a diagram showing the results of measuring the increase in web thickness. is there. 1 ... Roll axis, 2 ... Roll body W ... Roll width
Claims (1)
圧下する工程を含む圧延過程で該形材のウエブ部をその
厚み方向に圧下するロールであって、 該ロールは、ロール軸とこのロール軸に保持されロール
軸の軸方向に沿い互いに逆向きに移動可能な少なくとも
２つのロール本体からなり、該各ロール本体はその外側
端を起点とする30〜50mmの領域に、形材のウエブ部を幅
方向に圧下する際に生じる局部的な増厚を防止する凸部
を有することを特徴とする形材のウエブ厚み圧下用ロー
ル。1. A roll for rolling down a web portion of a profile in the thickness direction in a rolling process including a step of rolling down the web portion at least once in the width direction, the roll comprising: a roll shaft; The roll shaft is composed of at least two roll bodies that are held by the roll shaft and can move in opposite directions along the axial direction of the roll shaft, and each roll body has a region of 30 to 50 mm from its outer end as a starting point. A roll for reducing a web thickness of a profile, which has a convex portion which prevents a local increase in thickness when the web portion is pressed in the width direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63226561A JPH0696161B2 (en) | 1988-09-12 | 1988-09-12 | Roll for reducing web thickness of profile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63226561A JPH0696161B2 (en) | 1988-09-12 | 1988-09-12 | Roll for reducing web thickness of profile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0275404A JPH0275404A (en) | 1990-03-15 |
| JPH0696161B2 true JPH0696161B2 (en) | 1994-11-30 |
Family
ID=16847091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63226561A Expired - Fee Related JPH0696161B2 (en) | 1988-09-12 | 1988-09-12 | Roll for reducing web thickness of profile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0696161B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5373397A (en) * | 1992-01-08 | 1994-12-13 | Olympus Optical Co. Ltd. | Lens barrel of short length having the capability of a large zooming magnification and a zoom lens capable of a large forward movement |
| JP3190403B2 (en) * | 1992-01-08 | 2001-07-23 | オリンパス光学工業株式会社 | Lens barrel |
| US5285322A (en) * | 1992-09-08 | 1994-02-08 | Eastman Kodak Company | Mechanisms for mounting cam barrels |
| US5587843A (en) * | 1995-06-06 | 1996-12-24 | Industrial Technology Research Institute | Zoom lens mechanism |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57106503U (en) * | 1980-12-19 | 1982-07-01 | ||
| JPS58112602A (en) * | 1981-12-25 | 1983-07-05 | Sumitomo Metal Ind Ltd | Rolling method for shape steel and rolling mill train thereof |
-
1988
- 1988-09-12 JP JP63226561A patent/JPH0696161B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0275404A (en) | 1990-03-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |