JPH0484607A - Manufacture of steel plate with differential thickness in width direction - Google Patents
Manufacture of steel plate with differential thickness in width directionInfo
- Publication number
- JPH0484607A JPH0484607A JP19776890A JP19776890A JPH0484607A JP H0484607 A JPH0484607 A JP H0484607A JP 19776890 A JP19776890 A JP 19776890A JP 19776890 A JP19776890 A JP 19776890A JP H0484607 A JPH0484607 A JP H0484607A
- Authority
- JP
- Japan
- Prior art keywords
- width direction
- rolling
- strip
- tension
- stand
- 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.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 19
- 239000010959 steel Substances 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 238000005096 rolling process Methods 0.000 claims abstract description 27
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 5
- 238000005304 joining Methods 0.000 claims abstract description 4
- 238000009826 distribution Methods 0.000 abstract description 4
- 238000005098 hot rolling Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 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
- B21B1/22—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 plates, strips, bands or sheets of indefinite length
- B21B1/24—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 plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
- B21B1/26—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 plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2205/00—Particular shaped rolled products
- B21B2205/04—Taper- or wedge-shaped profiles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/02—Transverse dimensions
- B21B2261/04—Thickness, gauge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2265/00—Forming parameters
- B21B2265/02—Tension
- B21B2265/06—Interstand tension
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2265/00—Forming parameters
- B21B2265/18—Elongation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2273/00—Path parameters
- B21B2273/04—Lateral deviation, meandering, camber of product
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野］
本発明は、エンドレス圧延による鋼板の熱間仕上圧延に
おいて幅方向差厚鋼板を製造する方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for producing a steel plate with a different thickness in the width direction in hot finish rolling of a steel plate by endless rolling.
［従来の技術１
幅方向の板厚差のある鋼板は厚板圧延機では製造方法が
知られている（特開昭４９−５３５５５号公報）。[Prior Art 1] There is a known method for manufacturing a steel plate with a difference in thickness in the width direction using a thick plate rolling mill (Japanese Patent Laid-Open No. 49-53555).
この厚板の技術では長手に板厚差を生じる圧延を行った
後９０°方向転回をして入側鋼片断面をテーバ状にし、
長平方向圧延時の幅方向の伸び差を防止しキャンバ発生
を防止している。In this thick plate technology, after rolling to create a difference in thickness in the longitudinal direction, the steel piece is rotated 90 degrees to make the cross section of the steel piece into a tabular shape.
This prevents the difference in elongation in the width direction during rolling in the longitudinal direction and prevents the occurrence of camber.
しかし、ストリップの熱間圧延では幅方向のロールギャ
ップを変えて幅方向板厚差のある鋼板を製造すると、第
３図に示すように、幅方向の伸びに差が生じて、キャン
バが生じ製品品質を悪化させると共に、仕上圧延機の通
板性を阻害する。However, in hot rolling of strip, if the roll gap in the width direction is changed to produce a steel plate with a difference in thickness in the width direction, as shown in Figure 3, there will be a difference in elongation in the width direction, resulting in camber and the product. In addition to deteriorating the quality, it also impedes the threadability of the finishing mill.
第３図はロールＦ１のロールギャップを変えて、ロール
入側ストリップ断面１ａがロール出（１す断面］ｂとな
るように圧延したとき、ストリップが１ｃ方向へ曲り、
キャンバを生ずることを示している。Fig. 3 shows that when the roll gap of the roll F1 is changed and the strip cross section 1a on the roll entrance side becomes the roll exit side (cross section 1a) b, the strip bends in the direction 1c.
This indicates that camber occurs.
またストリップの熱間圧延では上記特開昭４９−５３５
５５号公報のように、ストリップを９０°方向転回する
ことはできない。In addition, in the hot rolling of strips,
It is not possible to rotate the strip by 90° as in the 55th publication.
〔発明が解決しようとする課題１
本発明はストリップの熱間仕上圧延において幅方向差厚
鋼板を製造する方法を実現することを目的とする。[Problem to be Solved by the Invention 1] An object of the present invention is to realize a method for manufacturing a steel plate with a difference in thickness in the width direction in hot finish rolling of a strip.
〔課題を解決するための手段１
本発明は、仕上圧延機の上流（９１１で鋼板を接合して
熱間圧延するエンドレス圧延において、鋼板に引張力が
生じているとき、仕上圧延機の幅方向のロールギャップ
を傾斜させて圧延し、幅方向に板厚差のある鋼板を製造
することを特徴とする幅方向差厚鋼板の製造方法である
。[Means for Solving the Problems 1] The present invention provides a method for rolling the steel sheets upstream of the finishing mill (in the endless rolling process in which steel plates are joined and hot-rolled at 911), when a tensile force is generated in the steel plate, This is a method for producing a steel plate with a difference in thickness in the width direction, which is characterized by rolling with a roll gap inclined to produce a steel plate with a difference in thickness in the width direction.
［作用］
ストリップに張力を与えた状態で仕上圧延機の圧延を連
続的に行う場合に、幅方向のロールギャップを変えて圧
延すると、次スタンドとの間のストリップの張力分布が
幅方向に変る。このとき、幅方向の断面差がそのまま長
手方向の伸び差となり、ストリップにキャンバを生ずる
ことなく、幅方向にメタルフローが生じて、長平方向の
伸び差を緩和させる。したがって、キャンバは生じない
。[Function] When rolling is performed continuously on a finishing mill with tension applied to the strip, if the roll gap in the width direction is changed and rolled, the tension distribution of the strip between the next stand and the next stand changes in the width direction. . At this time, the difference in cross-section in the width direction directly becomes a difference in elongation in the longitudinal direction, and metal flow occurs in the width direction without creating camber in the strip, thereby alleviating the difference in elongation in the longitudinal direction. Therefore, no camber occurs.
第１図はこのことを説明する説明図である。FIG. 1 is an explanatory diagram explaining this.
第１図（ａ）は仕上圧延機４の第１スタンドＦ１と第２
のスタンドＦ２の平面図を示すもので、ストリップ１は
引張力を受けている。第１スタンドＦ１は幅方向のロー
ルギャップを変えている。Figure 1(a) shows the first stand F1 and the second stand of the finishing rolling mill 4.
shows a top view of the stand F2 in which the strip 1 is under tension. The first stand F1 has a different roll gap in the width direction.
第１図（ｂ）はストリップ１の断面図の変化を示すもの
で、第１スタンドＦ１の入側の断面１ａは、出側におい
て断面１ｂのようになっている。FIG. 1(b) shows a change in the cross-sectional view of the strip 1, and the cross-section 1a on the entry side of the first stand F1 becomes the cross-section 1b on the exit side.
このときストリップ■内の張力分布は第１図（ａ）に示
すように厚肉側の張力１１が大きく、薄肉側の張力１２
が小さい。したがってこの張力差によって圧延時の幅方
向伸びの差１３が生じストリップにキャンバが生じない
。At this time, the tension distribution in the strip ■ is as shown in Fig. 1(a), where the tension 11 on the thick side is large and the tension 12 on the thin side is large.
is small. Therefore, this tension difference causes a difference 13 in elongation in the width direction during rolling, and no camber occurs in the strip.
〔実施例１
第２図は本発明の詳細な説明するだめの圧延工程の側面
図である。ストリップ１は粗圧延機２の下流側において
、接合装置３によって接合され、仕上圧延機４にて圧延
され、シャー５にて剪断された後巻き取られ、コイル６
となる。[Example 1] Fig. 2 is a side view of a rolling process for explaining the present invention in detail. The strip 1 is joined by a joining device 3 on the downstream side of the rough rolling mill 2, rolled by a finishing mill 4, sheared by a shear 5, and then wound up into a coil 6.
becomes.
幅方向差厚を付すべきストリップ（ジードパ５ＰＣＨ）
１の先端が仕上圧延機のＦ１スタンドに来た時点でＦ１
スタンドの片圧下を行い、その部分がＦ２スタンドに到
達した時点で片圧下量を増やしたＦ２スタンドの片圧下
な行い、順次片圧下量を増やしつつＦ７スタンドまで片
圧下を行った。結果は次の通りである。Strip with different thickness in the width direction (Jidopa 5PCH)
When the tip of 1 reaches the F1 stand of the finishing mill, F1
One-side reduction was performed on the stand, and when that part reached the F2 stand, one-side reduction was performed on the F2 stand with the amount of one-side reduction increased, and one-side reduction was performed up to the F7 stand while increasing the amount of one-side reduction sequentially. The results are as follows.
仕上圧延機入側
シートバー ３０ｍｍＸ１．０００ｍｍ（幅方向板厚差
≦５０μｍ）
（エツジ２５ｍｍ点）
仕」−圧延機出側
製品 ２．０ｍｍＸ Ｉ ０００ｍｍ（幅方向板
厚差２００ ＩＬｍ ）
（エツジ２５ｍｍ点）
差厚鋼機の先端のトラッキングはマスフロー１ｊ１算に
よって求めてもよく、また接合位置の圧延荷重の変動を
検知してこれを用いてもよく、その何れでもよい。Finish rolling machine entry side sheet bar 30mmX1.000mm (width direction plate thickness difference ≦50μm) (edge 25mm point) Finish - rolling mill exit side product 2.0mmX I 000mm (width direction plate thickness difference 200ILm) (edge 25mm point ) The tracking of the tip of the differential thickness steel machine may be obtained by mass flow 1j1 calculation, or may be used by detecting the fluctuation of the rolling load at the joining position, or either of these may be used.
なお、以上はＦ１〜Ｆ７仕上圧延機の全スタンドを用い
て片圧下をする例にて説明したが、製品厚さ等によって
は、上流スタンドでは幅方向に均等な圧下をし、下流ス
タンド（例えばＦ５〜Ｆ ７ ）のみ片圧下をしてもよ
い。さらに、上流スタンド（例えばＦ１〜Ｆ３）のみ片
圧下をし、下流スタンドは開放して圧下をしないように
してもよい。The above explanation was based on an example in which single rolling is performed using all stands of F1 to F7 finishing mills, but depending on the product thickness, etc., the upstream stand performs uniform rolling in the width direction, and the downstream stand (e.g. Only F5 to F7) may be partially compressed. Furthermore, only the upstream stands (for example, F1 to F3) may be partially rolled down, and the downstream stands may be opened and not rolled down.
本発明によれば、エンドレス熱間仕上圧延により、幅方
向の板厚差のある鋼板を製造することができるようにな
った。According to the present invention, it has become possible to manufacture a steel plate with a difference in plate thickness in the width direction by endless hot finish rolling.
第１図は本発明の詳細な説明図、第２図は本発明の詳細
な説明するための圧延工程の（ｊｊ＋１面図、第３図は
キャンバ発生の説明図である。FIG. 1 is a detailed explanatory diagram of the present invention, FIG. 2 is a (jj+1 plane view) of the rolling process for explaining the present invention in detail, and FIG. 3 is an explanatory diagram of camber generation.
Claims (1)
圧延すると共に仕上圧延機の幅方向のロールギャップを
傾斜させて圧延することを特徴とする幅方向差厚鋼板の
製造方法。1. A method for producing a steel plate with a different thickness in the width direction, which comprises joining steel plates upstream of a finishing mill and subjecting them to hot endless rolling, and rolling with the roll gap in the width direction of the finishing mill being inclined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2197768A JPH0757364B2 (en) | 1990-07-27 | 1990-07-27 | Method for manufacturing width-direction difference thickness steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2197768A JPH0757364B2 (en) | 1990-07-27 | 1990-07-27 | Method for manufacturing width-direction difference thickness steel plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0484607A true JPH0484607A (en) | 1992-03-17 |
| JPH0757364B2 JPH0757364B2 (en) | 1995-06-21 |
Family
ID=16380028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2197768A Expired - Fee Related JPH0757364B2 (en) | 1990-07-27 | 1990-07-27 | Method for manufacturing width-direction difference thickness steel plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0757364B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105598166B (en) * | 2016-01-04 | 2017-07-28 | 燕山大学 | A kind of different temperature rolling method for preparing stainless steel and carbon steel composite board |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57209703A (en) * | 1981-06-22 | 1982-12-23 | Nippon Kokan Kk <Nkk> | Preventing method for tail overlap in tandem rolling |
| JPS62214805A (en) * | 1986-03-14 | 1987-09-21 | Sumitomo Metal Ind Ltd | Method for preventing camber for rolling material |
-
1990
- 1990-07-27 JP JP2197768A patent/JPH0757364B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57209703A (en) * | 1981-06-22 | 1982-12-23 | Nippon Kokan Kk <Nkk> | Preventing method for tail overlap in tandem rolling |
| JPS62214805A (en) * | 1986-03-14 | 1987-09-21 | Sumitomo Metal Ind Ltd | Method for preventing camber for rolling material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0757364B2 (en) | 1995-06-21 |
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