JPH0757364B2 - Method for manufacturing width-direction difference thickness steel plate - Google Patents
Method for manufacturing width-direction difference thickness steel plateInfo
- Publication number
- JPH0757364B2 JPH0757364B2 JP2197768A JP19776890A JPH0757364B2 JP H0757364 B2 JPH0757364 B2 JP H0757364B2 JP 2197768 A JP2197768 A JP 2197768A JP 19776890 A JP19776890 A JP 19776890A JP H0757364 B2 JPH0757364 B2 JP H0757364B2
- Authority
- JP
- Japan
- Prior art keywords
- rolling
- strip
- stand
- difference
- steel sheet
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims description 15
- 239000010959 steel Substances 0.000 title claims description 15
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 238000000034 method Methods 0.000 title claims 2
- 238000005096 rolling process Methods 0.000 claims description 34
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 238000005304 joining Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 101100257461 Arabidopsis thaliana SPCH gene Proteins 0.000 description 1
- LFYJSSARVMHQJB-QIXNEVBVSA-N bakuchiol Chemical compound CC(C)=CCC[C@@](C)(C=C)\C=C\C1=CC=C(O)C=C1 LFYJSSARVMHQJB-QIXNEVBVSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005098 hot rolling 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
- B21B1/22—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)
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。Description: TECHNICAL FIELD The present invention relates to a method for producing a width-direction difference-thickness steel sheet in hot finish rolling of a steel sheet by endless rolling.
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）。A manufacturing method of a steel plate having a plate thickness difference in the width direction is known in a 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パ状にし、長
手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 that causes a difference in plate thickness in the longitudinal direction, it is turned in the 90 ° direction to taper the cross section of the steel strip on the inlet side, preventing the difference in elongation in the width direction during longitudinal rolling and creating camber. Is being prevented.
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 the hot rolling of strips, when a steel sheet having a widthwise thickness difference is manufactured by changing the widthwise roll gap, as shown in FIG. 3, a difference occurs in the widthwise elongation, resulting in a camber. It deteriorates the quality and impairs the sheet passing property of the finish rolling 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がロール出側断面1b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 F 1 is changed and the strip is rolled so that the cross section 1a of the strip on the roll entering side becomes the cross section 1b of the roll on the outgoing side, the strip bends in the direction 1c and causes a camber.
またストリップの熱間圧延では上記特開昭49−53555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。Further, in hot strip rolling, the strip cannot be turned in the 90 ° direction as in the above-mentioned Japanese Patent Laid-Open No. 49-53555.
〔発明が解決しようとする課題〕 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。[Problems to be Solved by the Invention] An object of the present invention is to realize a method for producing a width-direction difference thickness steel sheet in hot finish rolling of strip.
本発明は、仕上圧延機の上流側で鋼板を接合して熱間エ
ンドレス圧延すると共に仕上圧延機のスタンドの圧延幅
方向のロールギャップを傾斜させかつ該圧延スタンドの
上流から下流の鋼板に張力をかけ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である。The present invention joins the steel sheets on the upstream side of the finish rolling mill to perform hot endless rolling and tilts the roll gap in the rolling width direction of the stand of the finish rolling mill and applies tension to the steel sheet from the upstream side to the downstream side of the rolling stand. It is a manufacturing method of a width direction difference thickness steel sheet characterized by rolling over.
エンドレス圧延では、ストリップを連続的に連結してし
まうので、中間にあるストリップは常に張力を受けた状
態で圧延される。Since endless rolling continuously connects the strips, the strip in the middle is always rolled under tension.
幅方向のロールギャップを変えてストリップを圧延する
と、幅方向の断面差がそのまま長手方向の伸び差とな
り、ロールギャップの大きい方へストリップが曲がる。
しかしこれをストリップに張力を与えた状態で行うと、
長手方向の伸び差とならない。すなわち、この場合には
ストリップに張力がかかっていることから、ロールギャ
ップの少ない側のストリップのメタルフローが長手方向
ではなく第１図（ｂ）のような幅方向へのメタルフロー
となる。従って、長手方向の伸び差が緩和され、キャン
バが生じない。When the strip is rolled by changing the roll gap in the width direction, the cross-sectional difference in the width direction becomes the difference in elongation in the longitudinal direction as it is, and the strip bends toward the larger roll gap.
However, if you do this with tension applied to the strip,
There is no difference in elongation in the longitudinal direction. That is, in this case, since the strip is under tension, the metal flow of the strip on the side with less roll gap is not the longitudinal direction but the widthwise metal flow as shown in FIG. 1 (b). Therefore, the difference in elongation in the longitudinal direction is alleviated and the camber does not occur.
第１図はこのことを説明する説明図である。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。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 is an explanatory diagram for explaining this. FIG. 1A shows a plan view of the first stand F 1 and the second stand F 2 of the finish rolling mill 4, in which the strip 1 is subjected to a tensile force. The first stand F 1 changes the roll gap in the width direction. FIG. 1 (b) shows a change in the cross-sectional view of the strip 1. The cross section 1a on the inlet side of the first stand F 1 is like the cross section 1b on the outlet side.
このときストリップ１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 1 is such that the tension 11 on the thick side is large and the tension 12 on the thin side is small, as shown in FIG. Therefore, due to this tension difference, a difference 13 in elongation in the width direction during rolling occurs, and the camber does not occur in the strip.
第２図は本発明の実施例を説明するための圧延工程の側
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。FIG. 2 is a side view of the rolling process for explaining the embodiment of the present invention. On the downstream side of the rough rolling mill 2, the strip 1 is joined by a joining device 3, rolled by a finish rolling mill 4, sheared by a shear 5, and then wound to form a coil 6.
幅方向差厚を付すべきストリップ（シートバーSPCH）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スタンドの片圧下を行い、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。Strips with different thickness in the width direction (sheet bar SPCH) 1
Tip performs pieces reduction of F 1 stands at the time of coming to F 1 stand of the finishing rolling mill performs pieces pressure of F 2 stand portion thereof is increased strip rolling reduction upon reaching the F 2 stand, while increasing the sequential single reduction rate was one-under pressure until the F 7 stand. The results are as follows.
仕上圧延機入側： シートバー 30mm×1000mm （幅方向板厚差≦50μｍ） （エッジ25mm点） 仕上圧延機出側： 製品 2.0mm×1000mm （幅方向板厚差200μｍ） （エッジ25mm点） 差厚鋼板の先端のトラッキングはマスフロー計算によっ
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。Finishing mill entry side: Sheet bar 30mm x 1000mm (width direction thickness difference ≤ 50μm) (edge 25mm point) Finishing mill exit side: Product 2.0mm x 1000mm (width direction sheet thickness difference 200μm) (edge 25mm point) difference The tracking of the tip of the thick steel plate may be obtained by mass flow calculation, or the variation of the rolling load at the joining position may be detected and used, or any of them 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〜F7）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。In addition, the above is described with an example in which one-side reduction is performed using all the stands of the F 1 to F 7 finish rolling mills, but depending on the product thickness and the like,
Upstream stand a uniform reduction in the transverse direction, a downstream stand (e.g. F 5 to F 7) only may be a single pressure. further,
It is also possible to perform one-side reduction only on the upstream stand (for example, F 1 to F 3 ), and open the downstream stand to prevent reduction.
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 sheet having a plate thickness difference in the width direction by endless hot finish rolling.
第１図は本発明の原理の説明図、第２図は本発明の実施
例を説明するための圧延工程の側面図、第３図はキャン
バ発生の説明図である。 １……ストリップ、２……粗圧延機 ３……接合装置、４……仕上圧延機 ５……シャー、６……コイル 11,12……張力、13……伸び差FIG. 1 is an explanatory view of the principle of the present invention, FIG. 2 is a side view of a rolling process for explaining an embodiment of the present invention, and FIG. 3 is an explanatory view of camber generation. 1 ... Strip, 2 ... Coarse rolling mill 3 ... Joining device, 4 ... Finishing rolling mill, 5 ... Shear, 6 ... Coil 11, 12 ... Tension, 13 ... Expansion difference
───────────────────────────────────────────────────── フロントページの続き (72)発明者 野村 信彰 千葉県千葉市川崎町１番地 川崎製鉄株式 会社千葉製鉄所内 (56)参考文献 特開 昭57−209703（ＪＰ，Ａ) 特開 昭62−214805（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Nobuaki Nomura Inventor No. 1 Kawasaki-cho, Chiba-shi, Chiba Inside the Chiba Works, Kawasaki Steel Co., Ltd. (56) Reference JP-A-57-209703 (JP, A) JP-A-62- 214805 (JP, A)
Claims (1)
ンドレス圧延すると共に仕上圧延機のスタンドの圧延幅
方向のロールギャップを傾斜させかつ該圧延スタンドの
上流から下流の鋼板に張力をかけ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 steel sheet is joined on the upstream side of a finishing rolling mill to perform hot endless rolling, a roll gap in a rolling width direction of a stand of the finishing rolling mill is inclined, and a tension is applied to a steel sheet upstream from the rolling stand. A method for manufacturing a width-direction difference-thickness steel sheet, which comprises rolling over.
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 JPH0484607A (en) | 1992-03-17 |
| JPH0757364B2 true 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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105598166A (en) * | 2016-01-04 | 2016-05-25 | 燕山大学 | Different-temperature rolling method for preparing stainless steel and carbon steel composite board |
Family Cites Families (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
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105598166A (en) * | 2016-01-04 | 2016-05-25 | 燕山大学 | Different-temperature rolling method for preparing stainless steel and carbon steel composite board |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0484607A (en) | 1992-03-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2173066C (en) | Hot-rolling method of steel piece joint during continuous hot-rolling | |
| JPH0751703A (en) | Continuous processing line for the conversion of hot rolling to cold rolling | |
| US4316376A (en) | Method for preventing wandering of strip under roller leveling in hot rolling line | |
| JP3037513B2 (en) | Guide device for rough rolling mill and method for guiding rolled material | |
| JPH0757364B2 (en) | Method for manufacturing width-direction difference thickness steel plate | |
| JP3381576B2 (en) | Method and apparatus for preventing meandering of tail end of rolled material in continuous rolling mill | |
| EP0040653B1 (en) | Method for preventing wandering of strip under roller leveling in hot rolling line | |
| JP3244119B2 (en) | Strip shape and edge drop control method in strip rolling | |
| JPH105842A (en) | Method and apparatus for correcting bending of rolled material in hot plate rolling equipment, hot rolling equipment, and reversible tapered side guide | |
| JP3337966B2 (en) | Hot or warm rolling method and hot or warm rolling equipment for strip metal sheet | |
| JP3215332B2 (en) | Hot rolling method for sheet material | |
| JPH1094811A (en) | Determination of Rolling Order of Steel Sheet in Hot Rolling Continuous Process | |
| JP3801350B2 (en) | Rolling equipment | |
| JP2993376B2 (en) | Hot continuous finishing mill with meandering prevention function | |
| JP2919061B2 (en) | Edge drop control method in cold rolling | |
| CA1141206A (en) | Method for preventing wandering of strip under roller leveling in hot rolling line | |
| JPH05261416A (en) | Plate profile control method | |
| JP2755133B2 (en) | Stainless steel cold rolled strip width direction warping method | |
| JP2005152932A (en) | Universal mill and steel plate manufacturing method using the same | |
| JPH04251602A (en) | Hot rolling method | |
| JP3362076B2 (en) | Continuous hot rolling of billets | |
| JP2899225B2 (en) | Cold rolling method of sheet material and cold tandem mill | |
| JPH06179006A (en) | Method for changing and rolling sheet thickness of running hot rolled strip | |
| JPH06142710A (en) | Stable rolling method for deformed steel sheet | |
| JP2007237232A (en) | Steel sheet rolling method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| LAPS | Cancellation because of no payment of annual fees |