JPH0636927B2 - Strip warpage control method in hot rolling - Google Patents
Strip warpage control method in hot rollingInfo
- Publication number
- JPH0636927B2 JPH0636927B2 JP1168804A JP16880489A JPH0636927B2 JP H0636927 B2 JPH0636927 B2 JP H0636927B2 JP 1168804 A JP1168804 A JP 1168804A JP 16880489 A JP16880489 A JP 16880489A JP H0636927 B2 JPH0636927 B2 JP H0636927B2
- Authority
- JP
- Japan
- Prior art keywords
- rolling
- rolled material
- amount
- rolled
- warp
- 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 - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
- B21B39/10—Arrangement or installation of feeding rollers in rolling stands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2273/00—Path parameters
- B21B2273/02—Vertical deviation, e.g. slack, looper height
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、熱間圧延における圧延材の板反りの効果的
な制御方法に関する。TECHNICAL FIELD The present invention relates to a method for effectively controlling the warpage of a rolled material in hot rolling.
一般に、熱間圧延における板反り制御方法として、油圧
延や異周速圧延あるいはパスライン調整などが行われて
いる。そのうちのパスライン調整による板反り制御に関
しては、例えば実開昭５９−１２０００５号公報に提示
されたもの（第１従来例）や特開昭５９−１７８１１４
号公報に提示されたもの（第２従来例）等がある。Generally, oil rolling, different peripheral speed rolling, pass line adjustment, or the like is performed as a plate warpage control method in hot rolling. Regarding the plate warpage control by adjusting the pass line among them, for example, the one disclosed in Japanese Utility Model Laid-Open No. 59-120005 (first conventional example) and Japanese Patent Laid-Open No. 59-178114.
And the like (second prior art example) and the like.
第１従来例の場合は、可逆４段圧延機の前後のテーブル
ローラのうち、それぞれ圧延機側の少なくとも３本以上
のローラを上下に昇降可能とし、圧延機出側のテーブル
ローラ上面の高さを下作業ロール上面と一致させるよう
にして圧延する。In the case of the first conventional example, among the front and rear table rollers of the reversible four-high rolling mill, at least three or more rollers on the rolling mill side can be vertically moved up and down, and the height of the upper surface of the table roller on the rolling mill exit side can be increased or decreased. Is rolled so as to match the upper surface of the lower work roll.
又、第２従来例の場合は、上下の作業ロールの入側及び
出側におのおの独立に昇降可能なテーブルローラを設け
た圧延機のパススケジュール、圧下量及び入側板寸法に
基づいて、基本的には、出側のテーブルローラ上面の高
さを下作業ロール上面と一致させると共に、入側のテー
ブルローラ上面の高さを下作業ロール上面の高さより圧
下量の１／２だけ下げた位置にセットし、圧延操業中に
その時々の圧延状況に応じて、付加調整量の分だけ前後
のテーブルローラを昇降させて位置制御する。Further, in the case of the second conventional example, based on the pass schedule, the amount of reduction and the plate size of the inlet side of the rolling mill provided with the table rollers that can be independently raised and lowered on the inlet side and the outlet side of the upper and lower work rolls, respectively. At the position where the height of the upper surface of the table roller on the exit side is made to coincide with the upper surface of the lower work roll, and the height of the upper surface of the table roller on the entry side is made lower than the height of the lower work roll by ½ of the reduction amount. During the rolling operation, the front and rear table rollers are moved up and down by the additional adjustment amount according to the rolling situation at each time to control the position.
しかしながら、第１従来例の場合は、圧延機出側のテー
ブルローラ上面高さを下作業ロール上面と一致させて
も、ミルバイトとテーブルローラ間で下反りが発生す
る。そのため、圧延材先端がテーブルローラと衝突しな
がら圧延が行われ、圧延材に小ピッチの波打ち形状が出
現して品質不良の原因となるという問題点があった。However, in the case of the first conventional example, even if the height of the upper surface of the table roller on the delivery side of the rolling mill is matched with the upper surface of the lower work roll, the warp occurs between the mill bite and the table roller. Therefore, there is a problem in that rolling is performed while the tip of the rolled material collides with the table roller, and a wavy shape with a small pitch appears on the rolled material, which causes poor quality.
一方、第２従来例の場合は、前記付加調整量に影響を与
える因子として、圧延材の温度分布、上下作業ロールの
粗度など時々刻々変化するものが多く、実質的に的確な
値を決定することが困難で上反り気味あるいは下反り気
味に制御せざるを得ない。その結果、下反りの場合は、
第１従来例と同じく圧延材先端とテーブルローラとの衝
突による品質不良が発生する。又、上反りの場合は、圧
延材先端が圧延機及びその前後設備に衝突して設備破損
等の危険を招く、などの問題点があった。On the other hand, in the case of the second conventional example, as factors that affect the additional adjustment amount, there are many things that change momentarily such as the temperature distribution of the rolled material and the roughness of the upper and lower work rolls, and a substantially accurate value is determined. It is difficult to do so, and there is no choice but to control it so that it is curving up or down. As a result, in the case of a warp,
As in the first conventional example, defective quality occurs due to the collision between the rolled material tip and the table roller. In addition, in the case of warpage, there is a problem that the leading end of the rolled material collides with the rolling mill and the equipment in front of and behind it, causing a risk of equipment damage.
そこで本発明は、上記従来の問題点に着目してなされた
ものであり、その目的とするところは、実際には実現の
困難な全く平坦な板形状を目指す制御方法に代えて、圧
延機出側の圧延材先端形状の板反りを許容し、その度合
と方向を制御して衝突による品質不良や設備破損を来さ
ないようにした熱間圧延における板反り制御方法を提供
して、上記従来の問題点を解決することにある。Therefore, the present invention has been made by paying attention to the above-mentioned conventional problems, and the purpose thereof is to replace the control method aiming at a completely flat plate shape which is actually difficult to realize, with the rolling mill output. It provides a plate warpage control method in hot rolling that allows plate warpage of the rolled material tip shape on the side, and controls the degree and direction of the rolled material to prevent quality defects and equipment damage due to collisions. To solve the problem of.
更に、本発明の他の目的は、圧延材と下作業ロール、テ
ーブルローラとの位置関係が圧延中に崩れることのない
熱間圧延における板反り制御方法を提供することにあ
る。Another object of the present invention is to provide a plate warpage control method in hot rolling in which the positional relationship among the rolled material, the lower work rolls, and the table roller is not broken during rolling.
上記目的を達成するため、本発明は、圧延機の上下一対
の作業ロールの前面または前後面に、おのおの独立に昇
降可能な上下一対のフィードローラを設け、下フィード
ローラ上面と下作業ロール上面との距離を、圧延材の先
端部の噛み込み時は当該パス圧下量の１／２以下にして
圧延材に若干の上反り形状を与え、圧延材の噛み込み後
は所定長さを圧延するまで当該パス圧下量の１／２以上
にして圧延材に若干の下反り形状を与え、その後は当該
パス圧下量の１／２に維持する。In order to achieve the above object, the present invention provides a pair of upper and lower work rolls of a rolling mill on the front surface or front and rear surfaces thereof, each of which is provided with a pair of upper and lower feed rollers that can independently move up and down, and a lower feed roller upper surface and a lower work roll upper surface. When the biting of the tip of the rolled material is 1/2 or less of the pass reduction amount, the rolled material is given a slight warp shape, and after the biting of the rolled material The amount of pass reduction is set to 1/2 or more to give a slightly warped shape to the rolled material, and thereafter, the amount of pass reduction is maintained at 1/2.
圧延後の圧延材の形状が、先端部上反りその後下反り形
状となる。そのため、圧延中に圧延材の先端部がテーブ
ルローラに衝突して歪み品質不良となること、及び設備
に衝突して破損せしめる危険が共に防止できる。The shape of the rolled material after rolling becomes a warp shape at the tip and then a warp shape. Therefore, it is possible to prevent the leading end of the rolled material from colliding with the table roller during rolling, resulting in poor distortion quality and the risk of colliding with equipment and causing damage.
以下、本発明を実施例に基づき図とともに詳細に説明す
る。Hereinafter, the present invention will be described in detail based on embodiments with reference to the drawings.
第１図は可逆圧延機の要部ローラ配置を模式的に示した
もので、圧延機の上下一対の作業ロール１，２の前後
に、テーブルローラ３とテーブルローラ４を設けると共
に、更に、前記作業ロール１，２とテーブルローラ３と
の間に上下一対でおのおの独立に昇降可能なフィードロ
ーラ５ａ，５ｂを設け、前記作業ロール１，２とテーブ
ルローラ４との間に同様な上下一対のフィードローラ６
ａ，６ｂを設けている。FIG. 1 schematically shows the arrangement of the essential rollers of a reversible rolling mill. Table rollers 3 and 4 are provided in front of and behind a pair of upper and lower work rolls 1 and 2 of the rolling mill. A pair of upper and lower feed rollers 5a and 5b which can be independently moved up and down are provided between the work rolls 1 and 2 and the table roller 3, and a similar pair of upper and lower feeds are provided between the work rolls 1 and 2 and the table roller 4. Roller 6
a and 6b are provided.
第２図はフィードローラの昇降手段の構造を示すもの
で、上下一対のフィードローラ５ａ，５ｂ（６ａ，６
ｂ）は、それぞれがチョック７ａ，７ｂ及び昇降フレー
ム８ａ，８ｂに連結され、油圧装置９ａ，９ｂによって
上昇及び下降が行えるようになっている。FIG. 2 shows the structure of the raising and lowering means of the feed roller, which comprises a pair of upper and lower feed rollers 5a, 5b (6a, 6).
In b), each is connected to the chocks 7a, 7b and the elevating frames 8a, 8b, and can be moved up and down by the hydraulic devices 9a, 9b.
本発明者らは、この圧延機で圧延実験を行ったところ、
以下のような結果が得られた。すなわち、いま第３図に
矢符号イで示すように圧延材１０をパスさせる場合に、
入側となる下フィードローラ５ａの上面レベルＬｆと下
作業ロール２の上面レベルＬｗとの距離をＸとし、その
圧延後の圧延材１０の板反り量をＹとする。但し、その
板反り量Ｙは、第４図に示すように圧延材１０の下面１
０Ａのレベルを基準にして、圧延材先端部下端１０Ｂの
レベルとの差を表したもので、基準から下方を＋（下反
り）、上方をを−（上反り）とする。When the present inventors conducted a rolling experiment with this rolling mill,
The following results were obtained. That is, when passing the rolled material 10 as shown by arrow mark a in FIG.
The distance between the upper surface level Lf of the lower feed roller 5a on the entry side and the upper surface level Lw of the lower work roll 2 is X, and the amount of warpage of the rolled material 10 after rolling is Y. However, as shown in FIG. 4, the plate warpage amount Y is equal to
It represents the difference from the level of the rolled material tip end lower end 10B with the level of 0A as a reference, and the lower side is + (downward warp) and the upper side is − (upward warp) from the reference.
こうして、圧延パス毎に前記距離Ｘを種々変えて、異な
る圧下量につき圧延実験したところ、板反り量Ｙとの間
に第５図に示すような関係が得られた。In this way, when the distance X was variously changed for each rolling pass and a rolling experiment was carried out for different reduction amounts, the relationship with the plate warpage amount Y was obtained as shown in FIG.
第５図から次の知見が得られる。圧下量３０mmの場合、
距離Ｘを圧下量の１／２にしたとき板反り量Ｙ＝０とな
り板反りしない。距離Ｘが圧下量の１／２を下回ると、
板反り量Ｙは負（上反り）となり、且つ距離Ｘを小さく
する程板反り量Ｙの絶対値が大きくなる。距離Ｘが圧下
量の１／２を上回ると、板反り量Ｙは（下反り）とな
り、距離Ｘを大きくする程板反り量Ｙの絶対値が大きく
なる。圧下量４０mmの場合も以上と同様の傾向が認めら
れる。The following findings can be obtained from FIG. For a reduction of 30 mm,
When the distance X is set to 1/2 of the reduction amount, the plate warp amount Y = 0 and the plate warp does not occur. When the distance X is less than 1/2 of the reduction amount,
The plate warp amount Y becomes negative (upward warp), and the smaller the distance X, the larger the absolute value of the plate warp amount Y. When the distance X exceeds 1/2 of the reduction amount, the plate warp amount Y becomes (downward warp), and as the distance X is increased, the absolute value of the plate warp amount Y increases. The same tendency as above is observed when the reduction amount is 40 mm.
上記の圧延実験における板反り量Ｙは、圧延長を５ｍと
したときの値である。圧延長が異なると当然に第５図の
グラフの傾きは変化するけれども、距離Ｘが圧延量の１
／２を下回ると上反りになり、距離Ｘが圧下量の１／２
を上回ると下反りになるという関係については、圧延長
に拘わらず同様の結果が得られる。The plate warpage amount Y in the above rolling experiment is a value when the rolling length is 5 m. Although the slope of the graph of FIG. 5 naturally changes when the rolling length is different, the distance X is 1 of the rolling amount.
If it falls below / 2, it will warp and the distance X will be 1/2 of the reduction amount.
With respect to the relationship that a warp occurs when the value exceeds, the same result is obtained regardless of the rolling length.
また、距離Ｘと板反り方向との関係については、圧延条
件（圧延材の表面性状、圧延材と作業ロール間の摩擦係
数、作業ロールの回転数等）が圧延材表面と裏面、およ
び上作業ロール下作業ロールで同じであれば、圧下量に
拘わらず、上記と同様の結果が得られる。Regarding the relationship between the distance X and the plate warpage direction, the rolling conditions (surface property of the rolled material, coefficient of friction between the rolled material and work rolls, number of revolutions of the work roll, etc.) are the front and back surfaces of the rolled material, and the upper work. If the work rolls are the same, the same results as above can be obtained regardless of the amount of reduction.
そこで、上記の知見に基づいて、積極的に板反りを生じ
させながら、その程度と反り方向を人為的に制御しつつ
圧延することを実験的に検討した。すなわち、圧延材１
０の先端部の噛み込み時は、入側となる下フィードロー
ラ５ａの上面レベルＬｆを油圧装置９ａの操作で調整し
て、距離Ｘを当該パス圧下量の１／２以下にし、圧延材
に若干の上反り形状を先ず与える。これにより、圧延後
の圧延材１０の先端とテーブルローラ４との衝突を防止
し、圧延材１０の波打ち現象による品質不良の発生を無
くす。Therefore, based on the above findings, an experiment was conducted to positively cause the plate warp and to roll while artificially controlling the degree and the warp direction. That is, rolled material 1
When the front end portion of 0 is bitten, the upper surface level Lf of the lower feed roller 5a on the entrance side is adjusted by operating the hydraulic device 9a, and the distance X is reduced to 1/2 or less of the pass reduction amount, and the rolled material First give a slight warp shape. This prevents the tip of the rolled material 10 from colliding with the table roller 4 after rolling, and eliminates the occurrence of quality defects due to the corrugation phenomenon of the rolled material 10.
次いで、圧延材１０の先端が作業ロール１，２に噛み込
まれた後には、入側となる下フィードローラ５ａの上面
レベルＬｆを油圧装置９ａの操作で再調整して、所定長
さを圧延する間、距離Ｘを当該パス圧下量１／２以上に
して圧延材１０に若干の下反り形状を与える。上記所定
の圧延長は、圧延後の圧延材１０の先端の上反り部が圧
延材出側付帯設備に衝突することがない高さとなるよう
に設定し、過剰な上反りが生じるのを制御する。Next, after the tip of the rolled material 10 has been bitten by the work rolls 1 and 2, the upper surface level Lf of the lower feed roller 5a, which is the entrance side, is readjusted by operating the hydraulic device 9a, and the predetermined length is rolled. During this, the distance X is reduced to 1/2 or more of the pass to give the rolled material 10 a slight warp shape. The predetermined rolling length is set so that the warped portion of the tip of the rolled material 10 after rolling does not collide with the auxiliary equipment on the delivery side of the rolled material, and controls the occurrence of excessive warpage. .
その後は、入側となる下フィードローラ５ａの上面レベ
ルＬｆを油圧装置９ａの操作で再々調整して、距離Ｘを
当該パス圧下量の１／２に維持し、板反り量Ｙ＝０の状
態で圧延する。After that, the upper surface level Lf of the lower feed roller 5a on the entry side is readjusted by operating the hydraulic device 9a to maintain the distance X at 1/2 of the pass reduction amount and the plate warpage amount Y = 0. Roll with.
以上の圧延操業中の上フィードローラ５ｂと下フィード
ローラ５ａ間のギャップは、圧延機入側の圧延材１０の
板厚Ｈｉに設定する。これにより圧延材１０をピンチン
グして、フィードローラ５ａと作業ロール２との相対位
置関係が崩れないように配慮する。The gap between the upper feed roller 5b and the lower feed roller 5a during the above rolling operation is set to the plate thickness Hi of the rolled material 10 on the rolling mill entrance side. Thereby, the rolled material 10 is pinched so that the relative positional relationship between the feed roller 5a and the work roll 2 is not broken.
以上の通り距離Ｘを制御しつつ圧延した被圧延材１０の
圧延後の形状は、第６図に示すように先端部上反り、そ
の後下反り形状になる。As described above, the shape of the rolled material 10 that is rolled while controlling the distance X after rolling has a warp shape at the tip and a warp shape after that, as shown in FIG.
なお、距離Ｘの値は、０≦Ｘ≦（圧下量）の範囲内で制
御されるべきのであり、この範囲を越えるとスリップ等
の現象が生じて、圧延操業が阻害されことが確認され
た。It should be noted that the value of the distance X should be controlled within the range of 0 ≦ X ≦ (rolling down amount), and if it exceeds this range, a phenomenon such as slip occurs and it is confirmed that the rolling operation is hindered. .
実験例： 圧延材１０の材質：ＳＰＣＣ 圧延前厚 ：１５０mm 圧延後厚 ：１２０mm とし、距離Ｘの値を変化させるタイミングは、高信頼性
のロードリレーと距離タイマとの組合わせで決定する方
法で行った。Experimental example: Material of rolled material 10: SPCC Thickness before rolling: 150 mm Thickness after rolling: 120 mm The timing for changing the value of distance X is determined by a combination of a highly reliable load relay and a distance timer. went.
圧延機の上下作業ロール１，２が圧延材１０を噛み込ん
でから、圧延材１０の先端部が最初に５００mm進むまで
は距離Ｘ＝５mmとし、その後距離Ｘ＝２０mmとした。更
に５００mm進んだ後に、距離Ｘ＝１５mmとし、以後はそ
の値を維持して圧延した。上下のフィードローラ５ａ，
５ｂ間のギャップは１５０mmを保った。The distance X was 5 mm from when the upper and lower work rolls 1 and 2 of the rolling mill bit the rolled material 10 until the leading end of the rolled material 10 first advanced 500 mm, and then the distance X was 20 mm. After further advancing 500 mm, the distance X was set to 15 mm, and thereafter, the value was maintained and rolling was performed. Upper and lower feed rollers 5a,
The gap between 5b kept 150 mm.
この圧延操業で、第７図に示すような先端部上反りその
後下反り形状が得られた。圧延中の衝突による小波形状
の歪や設備破損は全く発生しなかった。In this rolling operation, a tip warp shape and then a warp shape as shown in FIG. 7 were obtained. No wavelet distortion or equipment damage due to collision during rolling occurred.
なお、上記実施例は可逆圧延機につい歴て述べたが、一
方向圧延機の場合も適用可能なことはいうまでもない。It should be noted that, although the above embodiment has been described with respect to the reversible rolling mill, it is needless to say that it can be applied to the case of a unidirectional rolling mill.
以上説明したように、本発明によれば、圧延機の上下一
対の作業ロールの前面または前後面に、おのおの独立に
昇降可能な上下一対のフィードローラを設け、下フィー
ドローラ上面と下作業ロール上面との距離を、当該パス
圧下量１／２を基準にして上下に制御して圧延し、圧延
繁後の圧延材の形状が先端部上反りその後下反り形状と
なるようにした。そのため、圧延中に圧延材の先端部が
テーブルローラに衝突して歪み品質不良となること、及
び設備に衝突して破損せしめる危険が共に防止できると
いう効果が得られる。As described above, according to the present invention, a pair of upper and lower feed rollers that can independently move up and down are provided on the front or front and rear surfaces of a pair of upper and lower work rolls of a rolling mill, and a lower feed roller upper surface and a lower work roll upper surface are provided. And the distance was controlled up and down on the basis of the pass reduction amount of 1/2 to perform rolling so that the shape of the rolled material after rolling was warped at the tip and then warped. Therefore, it is possible to prevent both the risk that the tip end of the rolled material collides with the table roller during rolling, resulting in poor distortion quality, and the risk of collision with equipment and damage.
又、上下のフィードローラで圧延材を挟んで圧延するも
のとしたため、圧延材と下フィードローラと下作業ロー
ルとの相対位置関係が崩されないという効果も得たれ
る。Further, since the rolled material is rolled by sandwiching the rolled material between the upper and lower feed rollers, it is possible to obtain the effect that the relative positional relationship among the rolled material, the lower feed roller and the lower work roll is not broken.
第１図は本発明の実施例の要部のローラ配置の模式図、
第２図はそのフィードローラの昇降構造の正面図、第３
図は圧延状態の模式図、第４図は板反り形状の説明図、
第５図は下フィードローラ上面と下作業ロール上面との
距離と板反り量との関係を表す図、第６図、第７図は圧
延形状の一例を示す側面である。 １，２は作業ロール、３，４はテーブルローラ、５ａ，
５ｂはフィードローラ、１０は圧延材。FIG. 1 is a schematic view of a roller arrangement of essential parts of an embodiment of the present invention,
FIG. 2 is a front view of the ascending / descending structure of the feed roller, and FIG.
Figure is a schematic diagram of the rolled state, Figure 4 is an explanatory diagram of the warp shape,
FIG. 5 is a diagram showing the relationship between the distance between the upper surface of the lower feed roller and the upper surface of the lower work roll and the amount of warpage, and FIGS. 6 and 7 are side surfaces showing an example of the rolled shape. 1, 2 are work rolls, 3 and 4 are table rollers, 5a,
5b is a feed roller and 10 is a rolled material.
Claims (1)
は前後面に、おのおの独立に昇降可能な上下一対のフィ
ードローラを設け、下フィードローラ上面と下作業ロー
ル上面との距離を、圧延材の先端部の噛み込み時は当該
パス圧下量の１／２以下にして圧延材に若干の上反り形
状を与え、圧延材の噛み込み後は所定長さを圧延するま
で当該パス圧下量の１／２以上にして圧延材に若干の下
反り形状を与え、その後は当該パス圧下量の１／２に維
持することを特徴とする熱間圧延における板反り制御方
法。1. A pair of upper and lower feed rollers that can independently move up and down are provided on the front surface or front and rear surfaces of a pair of upper and lower work rolls of a rolling mill, and the distance between the upper surface of the lower feed roller and the upper surface of the lower work roll is determined by the rolling material. When the tip of the rolled material is bitten, the rolled amount is reduced to 1/2 or less to give a slightly warped shape to the rolled material, and after the rolled material is bited, the rolled amount is 1 / 2 or more to give a slightly warped shape to the rolled material, and thereafter maintain at 1/2 of the pass reduction amount, a method for controlling warpage in hot rolling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1168804A JPH0636927B2 (en) | 1989-06-30 | 1989-06-30 | Strip warpage control method in hot rolling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1168804A JPH0636927B2 (en) | 1989-06-30 | 1989-06-30 | Strip warpage control method in hot rolling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0335805A JPH0335805A (en) | 1991-02-15 |
| JPH0636927B2 true JPH0636927B2 (en) | 1994-05-18 |
Family
ID=15874797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1168804A Expired - Lifetime JPH0636927B2 (en) | 1989-06-30 | 1989-06-30 | Strip warpage control method in hot rolling |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0636927B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2688429B1 (en) * | 1992-03-10 | 1996-07-12 | Clecim Sa | INSTALLATION FOR LAMINATION OF A METAL PLATE. |
| DE102015101580B3 (en) * | 2015-02-04 | 2016-06-02 | Hydro Aluminium Rolled Products Gmbh | Method and device for embossing a strip |
-
1989
- 1989-06-30 JP JP1168804A patent/JPH0636927B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0335805A (en) | 1991-02-15 |
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