WO1988009229A1 - Hot rolling method and equipment for fragile strip - Google Patents

Hot rolling method and equipment for fragile strip Download PDF

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Publication number
WO1988009229A1
WO1988009229A1 PCT/JP1988/000492 JP8800492W WO8809229A1 WO 1988009229 A1 WO1988009229 A1 WO 1988009229A1 JP 8800492 W JP8800492 W JP 8800492W WO 8809229 A1 WO8809229 A1 WO 8809229A1
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WO
WIPO (PCT)
Prior art keywords
heating
rolling
roll
roll body
burner
Prior art date
Application number
PCT/JP1988/000492
Other languages
French (fr)
Japanese (ja)
Inventor
Sadakazu Masuda
Fumio Fujita
Tadayoshi Murakami
Masahiko Yoshino
Ryuichi Yagi
Masamoto Kamata
Shunpei Kobayashi
Original Assignee
Nippon Kokan Kabushiki Kaisha
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP7807087U external-priority patent/JPS63189401U/ja
Priority claimed from JP12709787A external-priority patent/JPS63295003A/en
Application filed by Nippon Kokan Kabushiki Kaisha filed Critical Nippon Kokan Kabushiki Kaisha
Publication of WO1988009229A1 publication Critical patent/WO1988009229A1/en
Priority to KR1019890700140A priority Critical patent/KR890701234A/en

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B21B37/30—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control
    • B21B37/32—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control by cooling, heating or lubricating the rolls
    • 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
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/10—Lubricating, cooling or heating rolls externally
    • B21B27/106—Heating the rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • B21B3/02—Rolling special iron alloys, e.g. stainless steel

Definitions

  • the present invention relates to a method for warm rolling of brittle steel such as high Si steel, and a warm rolling equipment suitable for carrying out the method. It is. Background Technology Brittle materials such as high Si ⁇ are known to be difficult to process such as rolling, but these materials can also be rolled by raising the processing temperature. .
  • the strip temperature becomes higher than the roll temperature, so the strip path is heated by the strip.
  • FIG. 7 shows the amount of heat crown. Due to such a crown, the roll shape becomes a bottom-like shape that changes rapidly at the end of the plate width. As a result, the strip to be rolled becomes extremely center-stretched, and the end of the plate is subjected to a large tensile stress. Then, the strip of brittle material will easily break when subjected to the tensile stress of such a plate edge. Conventionally, there has been a roll cooling method using a coolant as a method of suppressing heat crown.However, in the case of brittle materials, the strip temperature cannot be lowered due to workability problems. This method is not applicable.
  • the rolling of steel dies has the problem that if the roll temperature is not high enough, the heat of the doll will be robbed by the rolls and the proper processing of the dies will not be possible. Sometimes it is necessary to preheat the rolling roll.
  • the present invention has been made in view of such a problem, and it is an object of the present invention to provide a method capable of suppressing the heat crown of a rolling roll and warm-rolling brittle steel without breaking. is there.
  • Another object of the present invention is to provide a rolling equipment suitable for carrying out such a method and capable of preheating a rolling roll.
  • DISCLOSURE OF THE INVENTION the present invention relates to a method for rolling a brittle steel curtain, which includes: The side part is heated to control the heat crown of the rolling roll.
  • Heating on both sides of the roll body can be performed by direct heating using a burner or other heating means, or indirect heating via a backup roll or the like.
  • the rolling equipment of the present invention is provided with a heating device capable of changing the heating range in the roll body length direction along the roll body length direction, and the rolling roll in the roll body length direction.
  • a plurality of temperature sensors are provided along the line, and the heating range of the heating device can be controlled based on temperature information from the temperature sensors.
  • the temperature of the reel surface is measured by the temperature sensor, and based on this temperature information, the heating range of the heating device and the width of heating on both sides of the roll are controlled.
  • the control of the heating width is specifically performed by on-off control of each heating element constituting the heating device.
  • the entire length of the body of the roll is heated by a heating device.
  • FIG. 1 is an explanatory diagram showing an embodiment of the method of the present invention.
  • Fig. 2 shows ⁇ —! In Fig. 1.
  • [It is an arrow view along the line.
  • Figure 3 shows the effect of the heating width on both sides of the roll body on the amount of heat crown in warm rolling.
  • the fourth marauder shows the change in the amount of heat crown in the example of the present invention and the comparative example over time.
  • FIG. 5 is a side view showing one embodiment of the facility of the present invention.
  • FIG. 6 is an arrow view along the line VI-V in FIG.
  • FIGS. 1 and 2 show one embodiment of the present invention, in which a rolling roll is directly heated by a heating parner.
  • (la) and (lb) are the upper and lower rolling rolls, (2) the backup roll, (3) the heating burner, (4) the stand, and (5) the roll temperature.
  • Thermometer (contact type) to do, (S) is Luoyang.
  • the heating burner (3) is arranged for each rolling roll (la) (lb) so that it can ripen the mouth of the rolling roll and the rain side portion.
  • This heating burner has a plurality of burner portions (burner nozzles) along the longitudinal direction of the roll body so that the width of the flame on the rain side of the mouth body can be appropriately adjusted. Is wearing.
  • both sides of the rolling roll body including the vicinity of the edge contact area of the steel roll (S) are directly heated by the heating burner (3). Then, the result of the heat-crown control is performed.
  • thermometer (5) the temperature in the longitudinal direction of the roll body is measured by a thermometer (5), and the heating width is adjusted by on-off control of each burner part that constitutes the heating burner. Is made.
  • the thermal expansion of the rolling section of the rolling roll is made uniform, and it is possible to properly prevent the center of the gamdy from extending.
  • the heating of both sides of the mouth body can be performed by direct heating using a wrench or other heating means, or indirect heating via a back-and-forth protocol or the like.
  • Fig. 3 shows the effect of the heating width on the amount of heat crown in warm rolling with equipment as shown in Fig. 1, and the crown can be controlled by the heating width.
  • H is appropriately suppressed by gradually increasing the heating width as the rolling time elapses.
  • FIG. 4 shows the change in the amount of heat crown during rolling (see FIG. 3) with time in the above-mentioned inventive examples and comparative examples.
  • a large heat crown is generated, whereas in the example of the present invention, the heat crown amount is suppressed to a small value.
  • the copper die was rolled without breaking from a plate thickness of 2.0 im to 0.5 mm.
  • roll preheating was performed. If not, the edge was broken at the beginning of rolling. '
  • heating near the edge was not performed during rolling, the steel had a large center extension and eventually broke.
  • FIG. 5 and 6 show one embodiment of the present invention, in which (la) and (lb) are upper and lower rolling rolls, (2) is a backup port, and (3) is a heating burner. , (4) is a stand, (5) is a temperature sensor, (6) is a heating control device, and (7) is a valve opening / closing device.
  • the heating burner (3) is arranged in pairs with each rolling roll (la) (lb).
  • This heating burner has a plurality of burner sections (31) (burner nozzles) along the longitudinal direction of the roll body, and the burner sections (31) are turned on and off by reloading.
  • the width of the flame with respect to the barrel can be adjusted as appropriate.
  • the gas supply pipe (8) to each burner section (31) of the heating parner (3) is provided with a valve (9), and each valve (9) is based on a command of the heating control device (6). It is opened and closed by the valve opening / closing device (7).
  • a plurality of the temperature sensors (5) are provided at intervals along the longitudinal direction of the roll body.
  • the temperature information from the temperature sensor (5) is sent to the heating control device (6), and based on this temperature information, the heating range of the heating burner (3) is controlled. ) Is turned on and off.
  • (10) is an air nozzle arranged opposite to the center of the mouth of the rolling roll (la) (lb), and each of the air nozzles (10) has an air pipe ( From 11), air for cooling the nozzle is supplied.
  • the entire length of the rolling roll (la) (lb) is preheated by using all the wrench arranged in the roll body length direction.
  • the part of the rolling roll (la) (lb) that includes the vicinity of the edge contact part of the steel ry- (S) is heated.
  • Heat with burner (3) indicates the roll table in the roll body longitudinal direction. The surface temperature is measured, and based on this temperature information, the roll heating position and the heating position of the roll are controlled by the on-off control of each burner section (31) so that the thermal expansion of the sheet path section of the rolling mill becomes uniform. The heating width is adjusted.
  • both sides of the roll cylinder are heated with burners as described above, and air is supplied from the air nozzle (10) to the center of the roll cylinder to forcibly cool that part.
  • air is supplied from the air nozzle (10) to the center of the roll cylinder to forcibly cool that part.
  • more aggressive heat-crown control can be performed.
  • INDUSTRIAL APPLICABILITY The method and equipment of the present invention can be used for rolling of brittle steel strips such as Gao Si.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Abstract

This invention relates to a method of hot rolling a fragile strip, and equipment for practicing the method. During a hot rolling operation according to this method, both side portions of a roll body including the portions of the same which are in the vicinity of the strip edge-contacting portions thereof are heated so as to control the heat crown of the roll. The rolling equipment has a heating unit capable of varying a heating range in the lengthwise direction of a rolling roll, and a plurality of temperature sensors arranged in the lengthwise direction of the roll, and is capable of controlling the heating range of the heating unit according to temperature information from the temperature sensors.

Description

( I ) 曰月 糸田 ¾  (I) Satsuki Itoda
. 脆性鋼帯の温間圧延方法及び温間圧延設備 技 術 分 野 こ の発明は、 高 S i鋼蒂等の脆性鐲蒂の温間圧延方法 及びその実施に好適な温間圧延設備に関するものであ る 。 背 景 技 術 高 S i鐲等の脆性材料は圧延等の加工が難し い こ と で 知られている が、 これ らの材料も加工温度を上げる こ と によ り圧延可能と なる。 . TECHNICAL FIELD The present invention relates to a method for warm rolling of brittle steel such as high Si steel, and a warm rolling equipment suitable for carrying out the method. It is. Background Technology Brittle materials such as high Si 鐲 are known to be difficult to process such as rolling, but these materials can also be rolled by raising the processing temperature. .
こ のよ う な加工温'度を上げた'圧延では、 ス ト リ ジ プ 温度がロ ール温度よ り高 く な るため、 ロールの板道部 がス ト リ ッ プによ り加熱されて熟膨張を.繰 り返し、 口 In such rolling at an elevated processing temperature, the strip temperature becomes higher than the roll temperature, so the strip path is heated by the strip. Repeatedly swelling
—ルは大き な凸ク ラ ウ ン と なる 。 第 7 図はこ の ヒー ト ク ラ ウ ン量を示 している 。 こ のよ う なク ラ ウ ン によ り ロ ール形状は、 板幅端部で急激に変化する なベ底状と なる 。 こ のため圧延される ス 卜 リ ッ プは極端なセンタ —延びと な り 、 板端部は大きな引張 り 応力 を受ける こ と になる。 そ して、 脆性材料のス ト リ ッ プは .. こ のよ う な板端部の引張 り 応力 を受ける と簡単に破断して .し ま う 。 従来、 ヒー トク ラ ウンを抑える方法と しては、 クー ラン ト を用いたロールの冷却方法があるが、 脆性材料 の場合、 加工性の問題からス ト リ ップ温度を低下させ られないため、 この方法は適用できない。 The rule is a large convex crown. Figure 7 shows the amount of heat crown. Due to such a crown, the roll shape becomes a bottom-like shape that changes rapidly at the end of the plate width. As a result, the strip to be rolled becomes extremely center-stretched, and the end of the plate is subjected to a large tensile stress. Then, the strip of brittle material will easily break when subjected to the tensile stress of such a plate edge. Conventionally, there has been a roll cooling method using a coolant as a method of suppressing heat crown.However, in the case of brittle materials, the strip temperature cannot be lowered due to workability problems. This method is not applicable.
また、 鋼蒂の温間圧延は、 ロール温度がある程度高 く ないと鐲蒂の熱がロールに奪われ鐲蒂の適切な加工 が行なえなく なる という問題がぁ リ、 このため鋼蒂の 圧延開始時に圧延ロールを予熱しておく必要がある。  In addition, the rolling of steel dies has the problem that if the roll temperature is not high enough, the heat of the doll will be robbed by the rolls and the proper processing of the dies will not be possible. Sometimes it is necessary to preheat the rolling roll.
本発明はこのよう な問題に鑑みなされたもので、 圧 延ロールの ヒー ト ク ラ ウンを抑え、 脆性鎩蒂を破断を 生じる ことなく温間圧延する ことができる方法を提供 せんとするものである。  The present invention has been made in view of such a problem, and it is an object of the present invention to provide a method capable of suppressing the heat crown of a rolling roll and warm-rolling brittle steel without breaking. is there.
また本発明は、 このよう な方法の実施に好適で、 し かも圧延ロールの予熱をも行なう こと ができる圧延設 備の提烘を他の 目的とする。 発 明 の 開 示 このよ う な目的を達成するため、 本発明は、 脆性鋼 幕の圧延中、 圧延ロールの長手方向において、 鑼蒂ェ ッジ接触部位の近傍を含む π一ル胴部雨側部分を加熱 し 、 圧延ロールの ヒー 卜 ク ラ ウ ンを制御する よ う に し たものである。  Another object of the present invention is to provide a rolling equipment suitable for carrying out such a method and capable of preheating a rolling roll. DISCLOSURE OF THE INVENTION In order to achieve such an object, the present invention relates to a method for rolling a brittle steel curtain, which includes: The side part is heated to control the heat crown of the rolling roll.
このよ う なヒ一 卜ク ラ ウ ンの制御によ り 、 圧延口一 ルの板道部の熱膨張が均一化し、 鋼帯のセン タ 一延び を適切に防止する こ と ができ る。 By controlling the heat crown in this way, the rolling mill The thermal expansion of the plate path of the steel strip is made uniform, and the center of the steel strip can be properly prevented from extending.
ロール胴部両側の加熱は、 バ一ナ一やその他の加熱 手段によ る直接加熱、 またはバッ クアップロール等を 介した間接加熱で行なう こ と ができる。  Heating on both sides of the roll body can be performed by direct heating using a burner or other heating means, or indirect heating via a backup roll or the like.
また、 本発明の圧延設備は、 圧延ロールの 口一ル胴 長方向に沿って、 ロール胴長方向における加熱範囲を 可変と し得る加熱装置を設ける と と もに、 圧延ロール のロール胴長方向に沿って複数の温度センサを設け、 該温度センサによる温度情報に基づき加熱装置の加熱 範囲を制御し得るよ う に構成した。  Further, the rolling equipment of the present invention is provided with a heating device capable of changing the heating range in the roll body length direction along the roll body length direction, and the rolling roll in the roll body length direction. A plurality of temperature sensors are provided along the line, and the heating range of the heating device can be controlled based on temperature information from the temperature sensors.
上記加熱装置による加熱中、 温度センサによ リ ロ 一 ル表面温度が測定され、 この温度情報に基づき加熱装 置の加熱範囲、 すなおち ロール両側の加熱幅が制御さ れる。 こ の加熱幅の制御は、 具体的には加熱装置を構 成する個々の加熱体のオン-オ フ制御によ り なされる。  During the heating by the heating device, the temperature of the reel surface is measured by the temperature sensor, and based on this temperature information, the heating range of the heating device and the width of heating on both sides of the roll are controlled. The control of the heating width is specifically performed by on-off control of each heating element constituting the heating device.
また、 圧延ロールの予熟を行なう場合には、 □—ル 胴部の唣全長を加熱装置で加熱する。  When the rolling roll is pre-ripened, the entire length of the body of the roll is heated by a heating device.
前記加熱装置と しては、 加熱バ一ナをはじめ とする 適当な加熱手段を用いる こ と ができ る。 図 面 の 簡 単 な 説 明 第 1 図は本発明法の一実施状況を示す説明図である 第 2図は第 1 図中 Π—！ [線に沿う矢視図である。 As the heating device, an appropriate heating means such as a heating burner can be used. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram showing an embodiment of the method of the present invention. Fig. 2 shows 中 —! In Fig. 1. [It is an arrow view along the line.
第 3 図は温間圧延において Π—ル胴部両側の加熱幅 がヒ一 卜ク ラ ウン量に及ぼす影響を示したものである。  Figure 3 shows the effect of the heating width on both sides of the roll body on the amount of heat crown in warm rolling.
第 4 匪は実施例における本発明例と比較例のヒー ト ク ラ ウン量の変化を経時的に示したものである。  The fourth marauder shows the change in the amount of heat crown in the example of the present invention and the comparative example over time.
第 5 図は本発明設備の一実施例を示す側面図である。 第 6図は第 5 図中 VI— V [線に沿う矢視図である。  FIG. 5 is a side view showing one embodiment of the facility of the present invention. FIG. 6 is an arrow view along the line VI-V in FIG.
第 7 図は鋪蒂の温間圧延におけるロール胴部長手方 向でのヒー トク ラウンを示すものである。 発明を実施するための最良の形態 第 1 図及び第 2図は本発明の一-実施状況 示 もの で、 加熱パーナで圧延ロールを直接加熱するよう にし たものである。  Fig. 7 shows the heat crown in the longitudinal direction of the roll body in the hot rolling of Udai. BEST MODE FOR CARRYING OUT THE INVENTION FIGS. 1 and 2 show one embodiment of the present invention, in which a rolling roll is directly heated by a heating parner.
図において、 （la) (lb)は上下の圧延ロール、 （2)は バッ クア ップロール、 （3)は加熱バ一ナ、 （4)はスタ ン ド、 （5)はロ ール温度を測定するための温度計（接触 式)、 （S)は鑼蒂である。  In the figure, (la) and (lb) are the upper and lower rolling rolls, (2) the backup roll, (3) the heating burner, (4) the stand, and (5) the roll temperature. Thermometer (contact type) to do, (S) is Luoyang.
加熱バーナ（3)は、 圧延ロールの口一ル胴部雨側部 分を加熟し得るよう に各圧延ロール（la) (lb)に対して 配置されている。 この加熱バ一ナはロール胴部長手方 向に沿って複数のバー-ナ部（バ一ナノズル）を有し、 口 —ル胴部雨側での火炎の幅を適宜調整し得るよう にな つている。 The heating burner (3) is arranged for each rolling roll (la) (lb) so that it can ripen the mouth of the rolling roll and the rain side portion. This heating burner has a plurality of burner portions (burner nozzles) along the longitudinal direction of the roll body so that the width of the flame on the rain side of the mouth body can be appropriately adjusted. Is wearing.
このよ う な設備.において、 鋼蒂（S )の圧延中、 鋼蒂 (S )のエッジ接触部位の近傍を含む圧延ロール胴部両 側部分は加熱バ一ナ（3 )によ り直接加熱され、 そのヒ 一卜 ク ラウン制御がなされる。  In such equipment, during rolling of the steel roll (S), both sides of the rolling roll body including the vicinity of the edge contact area of the steel roll (S) are directly heated by the heating burner (3). Then, the result of the heat-crown control is performed.
実際には、 温度計（5 )によ り ロール胴部長手方向に おける温度が測定され、 加熱バ一ナを構成する各バー ナ部のオン-オ フ制御等によ リ加熱幅等の調整がなさ れる。  Actually, the temperature in the longitudinal direction of the roll body is measured by a thermometer (5), and the heating width is adjusted by on-off control of each burner part that constitutes the heating burner. Is made.
このよう な ヒー トク ラ ウンの制御によ り、 圧延ロー ルの板道部の熱膨張が均一化し、 鏑蒂のセンタ 一延び を適切に防止する こ と が.でき'る。  By controlling the heat crown in this way, the thermal expansion of the rolling section of the rolling roll is made uniform, and it is possible to properly prevent the center of the gamdy from extending.
なお、 上記口一ル胴部両側の加熱は、 パーナやその 他の加熱手段による直接加熱またはバッ クァ シプロ一 ル等を介した間接加熱で行なう こ と ができ る。  The heating of both sides of the mouth body can be performed by direct heating using a wrench or other heating means, or indirect heating via a back-and-forth protocol or the like.
第 3 図は第 1 図に示すよ う な設備による温間圧延に おいて、 ヒー ト ク ラ ウン量に及ぼす加熱幅の影響を示 したもので、 加熱幅によってク ラ ウン制御ができ、 特 に、 圧延時間の経過と とも に加熱幅を順次広げてい く こ と によ り 、 H が適切に抑えられる こ と が判る。  Fig. 3 shows the effect of the heating width on the amount of heat crown in warm rolling with equipment as shown in Fig. 1, and the crown can be controlled by the heating width. In addition, it can be seen that H is appropriately suppressed by gradually increasing the heating width as the rolling time elapses.
〔実 施 例〕  〔Example〕
- 第 1 図及び第 2 図に示される と同様の設備を用 い、 まず、 圧延前に、 ロール胴部に対向 して配置 されたすべてのバーナ を用いて、 ロールの予熱 (200°C)を行い、 次い'で被圧延鏰蒂のエッジ接触 位置から ロール端方向にかけての所定幅のロール 部分を加熱しつつ、 鑼帯の温間圧延を実施した。 また比較のため、 同様の条件でロール加熱を行お ずに温間圧延を実施した。 圧延の具体的な条件は 以下の通りである。 -Use the same equipment as shown in Fig. 1 and Fig. 2. First, before rolling, place it facing the roll body. Preheating the roll (200 ° C) using all the burners performed, and then heating the roll of a predetermined width from the edge contact position of the rolled steel to the end of the roll in the next ' Was carried out. For comparison, warm rolling was performed under the same conditions without performing roll heating. The specific conditions for rolling are as follows.
6.5% Sill  6.5% Sill
鋼 蒂加 熱温度 350°C  Heat temperature 350 ° C
圧 延 ロ ール径 200画 φ - 圧延ロール胴長 200画 φ  Rolling roll diameter 200 strokes φ-Rolling roll body length 200 strokes φ
圧延口.一ル加熱条件（本発明）  Rolling spout. Heating conditions (the present invention)
加 熱 幅 30 mm  Heating width 30 mm
バ一ナ温度 1000。C  Burner temperature 1000. C
ロール温度 2O0~25O°C  Roll temperature 2O0 ~ 25O ° C
第 4図は上記本発明例と比較例において、 圧延 中のヒー ト ク ラ ウン量 (第 3 図参照）の変化を 経時的に示すもので、 ロール加熱を行わない比較 例では圧延の進行と ともに大きなヒー ト クラ ウン を生じるのに対し、 本発明例ではヒー トク ラ ウン 量が小さ く抑えられている。 本発明では、 銅蒂を 板厚 2.0imから 0.5mmまで破断する ことなく圧延で きた。 し 'かしながら比較例では、 ロール予熱を行 おない場合、 圧延初期においてエツ ジ部が破断し た'。 また圧延時にエツ ジ近傍の加熱を行わない場 合、 鋼蒂に大きなセンタ一延びを生じ、 ついには 破断して しまっ た。 FIG. 4 shows the change in the amount of heat crown during rolling (see FIG. 3) with time in the above-mentioned inventive examples and comparative examples. In both cases, a large heat crown is generated, whereas in the example of the present invention, the heat crown amount is suppressed to a small value. In the present invention, the copper die was rolled without breaking from a plate thickness of 2.0 im to 0.5 mm. However, in the comparative example, roll preheating was performed. If not, the edge was broken at the beginning of rolling. ' In addition, if heating near the edge was not performed during rolling, the steel had a large center extension and eventually broke.
また、 ロール温度を 200〜 250 °Cに保持できれば良 好な圧延が行えるため'、 他の実施例と して上記温 度を下回らない条件で、 熱膨張の大きい板道部を エア にて強制冷却を行う こ と によ り ヒ 一 ト ク ラ ウ ン制御を行っ た。 こ の よ う に板エッ ジ近傍の加熟 と ロ ールの板道部のエア冷却を組み合わせた結果、 所定の板厚までロールに過度の温度上昇を発生さ せる こ とな く 、 良好なヒー ト ク ラ ウン制御が行え た。  In addition, since good rolling can be performed if the roll temperature can be maintained at 200 to 250 ° C ', as another example, the sheet path with large thermal expansion is forced by air under the condition that the temperature does not fall below the above temperature. Heat-crown control was performed by cooling. As a result of combining ripening near the edge of the sheet and air cooling of the sheet path of the roll as described above, it is possible to obtain a favorable roll without causing an excessive rise in temperature to a predetermined sheet thickness. Heat crown control was performed.
次に、 本発明の圧延設備について説明する。  Next, the rolling equipment of the present invention will be described.
第 5 図及び第 6 図は本発明の一実施例を示すもので、 (la) (lb)は上下の圧延ロール、 （2)はバッ ク ァ ッ プ口 —ル、 （3)は加熱バーナ、 （4)はスタ ン ド、 （5)は温度 センサ、 （6)は加熱制御装置、 （7)はバルブ開閉装置で ある。  5 and 6 show one embodiment of the present invention, in which (la) and (lb) are upper and lower rolling rolls, (2) is a backup port, and (3) is a heating burner. , (4) is a stand, (5) is a temperature sensor, (6) is a heating control device, and (7) is a valve opening / closing device.
前記加熱バ'一ナ（3)は、 各圧延ロール（la) (lb)に対 杭して配置されている。 この加熱バ一ナはロール胴部 長手方向に沿っ て複数のバ一ナ部（31) (バ一ナノズル） を有し、 これ らバ一ナ部（31)のオン-オフ によ リ ロー ル胴部に対する火炎の幅を適宜調整し得るよう になつ ている。 The heating burner (3) is arranged in pairs with each rolling roll (la) (lb). This heating burner has a plurality of burner sections (31) (burner nozzles) along the longitudinal direction of the roll body, and the burner sections (31) are turned on and off by reloading. The width of the flame with respect to the barrel can be adjusted as appropriate.
加熱パーナ（3)の各バ一ナ部（31)へのガス供給管（8) にはバルブ（9)が設けられ、 この各バルブ（9)は加熱制 御装置（6)の指令に基づくバルブ開閉装置（7)によ リ開 閉させられる。  The gas supply pipe (8) to each burner section (31) of the heating parner (3) is provided with a valve (9), and each valve (9) is based on a command of the heating control device (6). It is opened and closed by the valve opening / closing device (7).
前記温度センサ（5)はロール胴部の長手方向に沿つ て間隔的に複数設けられている。 これら温度センサ（5) による温度情報は加熱制御装置（6)に送られ、 この温 度情報に基づき加熱バーナ（ 3 )の加熱範囲の制御、 具 体的にはバルブ開閉による各バーナ部（31 )のオン -ォ フ制御が行なおれる。  A plurality of the temperature sensors (5) are provided at intervals along the longitudinal direction of the roll body. The temperature information from the temperature sensor (5) is sent to the heating control device (6), and based on this temperature information, the heating range of the heating burner (3) is controlled. ) Is turned on and off.
なお、 （10)は各圧延ロール（la) (lb)の口一ル胴部の 中央部に対抗して配置されたエア ノ ズルであ り、 該各 エアノズル（10)には、 エア配管（11)から口一ル冷却用 のエアが供給されるよう になっている。  In addition, (10) is an air nozzle arranged opposite to the center of the mouth of the rolling roll (la) (lb), and each of the air nozzles (10) has an air pipe ( From 11), air for cooling the nozzle is supplied.
以上のよう な圧延設備では、 ロール予熱時には、 Π —ル胴長方向に並べられたすべてのパーナを甩いて圧 延ロール（la) (lb)の略全長の予熱を行う 。 また、 脆性 銷蒂 (S)の圧延中にば、 圧延ロール（la) (lb)のう ち、 鋼蒂 -(S)のエッジ接触部位近傍を含む口一ル胴雨側部 分のみを加熱バ一ナ（3)で加熱する。 かかる加熱中、 温度センサ（5)によ り o―ル胴長手方向でのロール表 面温度が測定され、 この温度情報に基づき、 圧延口一 ルの板道部の熱膨張が均一 と なる よ う 、 各バーナ部 ( 31 )のオン-オ フ制御によ り ロールの加熱位置や加熱 幅の調整がなされる。 In the rolling equipment as described above, at the time of roll preheating, the entire length of the rolling roll (la) (lb) is preheated by using all the wrench arranged in the roll body length direction. In addition, during the rolling of the brittle sales fairy (S), only the part of the rolling roll (la) (lb) that includes the vicinity of the edge contact part of the steel ry- (S) is heated. Heat with burner (3). During such heating, the temperature sensor (5) indicates the roll table in the roll body longitudinal direction. The surface temperature is measured, and based on this temperature information, the roll heating position and the heating position of the roll are controlled by the on-off control of each burner section (31) so that the thermal expansion of the sheet path section of the rolling mill becomes uniform. The heating width is adjusted.
また、 圧延中、 上記のよ う にロール胴両側部をバ一 ナで加熱する と ともに、 ロール胴中央部にエアノ ズル ( 10 )からエアを供給して、 その部分を強制冷却する こ と によ り 、 よ り積極的な ヒー ト ク ラ ウン制御を行う こ と ができる。 産業上 の利用可能性 本発明の方法及び設備は高 Si鐲蒂等の脆 ¾鋼帯の圧 延に利用する こ と ができる。  During rolling, both sides of the roll cylinder are heated with burners as described above, and air is supplied from the air nozzle (10) to the center of the roll cylinder to forcibly cool that part. Thus, more aggressive heat-crown control can be performed. INDUSTRIAL APPLICABILITY The method and equipment of the present invention can be used for rolling of brittle steel strips such as Gao Si.

Claims

請 求 の 範 囲 The scope of the claims
(1) 脆性鑼蒂の圧延中、 圧延ロールの長手方向にお いて、 鑼蒂エッジ接触部位の近傍を含むロール胴 部両側部分を加熱し、 圧延ロールのヒー トク ラウ ンを制御する こ とを特徴とする脆性鋼蒂の温間圧 延方法。 ' (1) During the rolling of the brittle ludy, control both sides of the roll body, including the vicinity of the ludy edge contact area, in the longitudinal direction of the rolling roll to control the heat crown of the rolling roll. Warm rolling method for brittle steel. '
(2) 口一ル胴部両側を加熱手段によ リ直接加熱する 請求の範囲（1)記載の方法。  (2) The method according to claim (1), wherein both sides of the mouth body are directly heated by heating means.
(3) 加熟手段によ リ圧延口 ルのバッ クァップロ一 ルの口一ル胴部雨側を加熱し、 該バッ クアップ口 ール らの熱伝導によ y圧延口一ル胴部雨側を力 g 熱する請求の範囲（1)記載の方法。  (3) The ripening means heats the rain side of the back roll of the rolling mill by the ripening means, and the heat is transferred from the backup mill to the rain side of the rolling mill. The method according to claim 1, wherein the heat is heated.
(4) 加熱手段が加熱バ一ナである請求の範囲（1)、 (2)または ）記載の方法- (4) The method according to claims (1), (2) or (3), wherein the heating means is a heating burner.
(5) 加熱手段が加熱バ一ナ以外の手段である請求の 範囲（1)、 （2)または（3)記載の方法。 (5) The method according to claims (1), (2) or (3), wherein the heating means is a means other than a heating burner.
(6) 圧延時間の経過と ともに、 ロール胴部雨側の加 熱範囲を α—ル胴部端方向に順次広げてい く こと を特徵とする請求の範囲（1)、 （2)または（3)記载 の方法。  (6) Claims (1), (2) or (3) characterized in that as the rolling time elapses, the heating range on the rain side of the roll body is gradually expanded toward the α-bar body end. ) Notation method.
(7 ) 圧延口一ルのロール胴長方向に沿っ て、 ロール 胴長方向における加熱範囲を可変と し得る加熱装 置を設ける と ともに、 圧延口一ルの π—ル胴長方 ( I D 向に沿っ て複数の温度センサを設け、 該温度セ ン サによ る温度情報に基づき加熱装置の加熱範囲を 制御し得るよ う構成して成る脆性鋼帯の温間圧延 設備。 (7) A heating device that can change the heating range in the roll body length direction is provided along the roll body length direction of the rolling mill, and the π-roll body length of the rolling mill is (A hot rolling facility for brittle steel strip, comprising a plurality of temperature sensors provided along the ID direction so that the heating range of the heating device can be controlled based on temperature information from the temperature sensors.
(8) 加熱装置がロール胴長方向に沿って複数の加熱 パーナを備えている請求の範囲（7)記載の設備。  (8) The equipment according to claim (7), wherein the heating device includes a plurality of heating spanners along the roll body length direction.
(9) 加熱装置が加熱バ一ナ以外の加熱手段を備える 請求の範囲（8)記載の設備。  (9) The facility according to claim (8), wherein the heating device includes a heating means other than the heating burner.
PCT/JP1988/000492 1987-05-26 1988-05-23 Hot rolling method and equipment for fragile strip WO1988009229A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019890700140A KR890701234A (en) 1987-05-26 1989-01-25 Warm rolling method of brittle steel strip and warm rolling equipment

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP62/78070U 1987-05-26
JP62/127097 1987-05-26
JP7807087U JPS63189401U (en) 1987-05-26 1987-05-26
JP12709787A JPS63295003A (en) 1987-05-26 1987-05-26 Method for warm rolling brittle steel strip

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Publication Number Publication Date
WO1988009229A1 true WO1988009229A1 (en) 1988-12-01

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DE19830034A1 (en) * 1998-06-26 1999-12-30 Mannesmann Ag Method for hot rolling metal especially steel strips

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JPS60180611A (en) * 1984-02-29 1985-09-14 Kobe Steel Ltd Control method of roll coolant in rolling mill
JPS60238012A (en) * 1984-05-10 1985-11-26 Mitsubishi Electric Corp Method for shape control of rolling mill

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US1978894A (en) * 1930-06-20 1934-10-30 Walter R Clark Rolling mill
FR1339417A (en) * 1962-11-23 1963-10-04 Process for improving and regulating the rolling conditions of flat products as well as devices for carrying out this process or similar process
US3213655A (en) * 1962-12-03 1965-10-26 Westinghouse Electric Corp Workpiece shape control apparatus
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JPS5581010A (en) * 1978-12-12 1980-06-18 Kobe Steel Ltd Plate shape control method of plate rolling
JPS58128208A (en) * 1982-01-28 1983-07-30 Nippon Steel Corp Method and device for supplying of cooling water for roll of cold rolling mill
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JPS60238012A (en) * 1984-05-10 1985-11-26 Mitsubishi Electric Corp Method for shape control of rolling mill

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Title
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