JPH06246328A - Method for rolling soft metallic slab - Google Patents

Method for rolling soft metallic slab

Info

Publication number
JPH06246328A
JPH06246328A JP5036486A JP3648693A JPH06246328A JP H06246328 A JPH06246328 A JP H06246328A JP 5036486 A JP5036486 A JP 5036486A JP 3648693 A JP3648693 A JP 3648693A JP H06246328 A JPH06246328 A JP H06246328A
Authority
JP
Japan
Prior art keywords
slab
rolling
heating furnace
roller table
double
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
Application number
JP5036486A
Other languages
Japanese (ja)
Other versions
JP2658797B2 (en
Inventor
Tahe Matsunaka
太兵衛 松中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries Ltd
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
Application filed by Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP5036486A priority Critical patent/JP2658797B2/en
Publication of JPH06246328A publication Critical patent/JPH06246328A/en
Application granted granted Critical
Publication of JP2658797B2 publication Critical patent/JP2658797B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Abstract

PURPOSE:To heat and to roll a soft metallic slab without leaving the pawl mark of a pit crane on it. CONSTITUTION:After a double slab 20 in which a soft intermediate metallic slab 12 for rolling is lapped on an underlay slab 11 for extracting and a topping slab 13 for insulating heat are individually charged into a batch type heating furnace 14 and heated, a tripple slab 30 is made by putting the topping slab on the double slab. The tripple slab is extracted from the heating furnace with the pit crane and placed on the roller table of the rolling line and, after the topping slab is fixed with side guides 15, the double slab is advanced on the side of the rolling mill. After the side guides 15 are released, the topping slab 13 and the double slab 20 are retreated on the side of the heating furnace with the roller table and the intermediate slab for rolling is fixed with the side guides. After only the underlay slab for extracting is retreated on the side of the heating furnace, the intermediate slab for rolling is fed to a rolling mill 4 with the roller table and rolled.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、軟鋼、銅合金等の軟質
金属のスラブの圧延方法に関し、さらに詳しく言えば、
軟質金属スラブの圧延に先立ってそのスラブをバッチ式
加熱炉に有効かつ迅速に装入・抽出できる方法に関する
ものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for rolling slabs of soft metals such as mild steel and copper alloys.
The present invention relates to a method for effectively and quickly charging and extracting a soft metal slab into a batch heating furnace before rolling the slab.

【0002】[0002]

【従来の技術】従来、軟鋼、銅合金等の軟質金属のスラ
ブは、まずバッチ式加熱炉に装入されて所定の温度(7
70〜790°C)まで加熱され、次いで抽出され、圧
延ラインに搬送され、圧延機によって圧延される。
2. Description of the Related Art Conventionally, a slab of soft metal such as mild steel or copper alloy is first charged into a batch type heating furnace and is heated to a predetermined temperature (7).
70-790 ° C), then extracted, conveyed to a rolling line and rolled by a rolling mill.

【0003】例えば、図3に示すように、加熱された軟
質金属スラブ1をバッチ炉から抽出するとき、ピットク
レーン2を使用してスラブ1を吊り出す(A)。このと
きピットクレーン2の爪が軟化したスラブ1の長辺側面
に食い込み、スラブ1に爪跡3を残す(3)。このスラ
ブ1をそのまま圧延機4によって圧延をすると(C)、
爪跡3の部分が圧延材5に幅不足の欠陥部6として現れ
る(D)。
For example, as shown in FIG. 3, when extracting a heated soft metal slab 1 from a batch furnace, a pit crane 2 is used to suspend the slab 1 (A). At this time, the claws of the pit crane 2 bite into the softened slab 1 on the side surfaces of the long sides, and the claw marks 3 are left on the slab 1 (3). When this slab 1 is rolled by the rolling mill 4 as it is (C),
The portion of the claw mark 3 appears on the rolled material 5 as a defective portion 6 having an insufficient width (D).

【0004】その結果、歩留が低下し、圧延ラインの生
産能率を低下させる。
As a result, the yield is lowered and the production efficiency of the rolling line is lowered.

【0005】そこで対策としてピットクレーンの爪跡を
圧延後の材料の先端部または後端部に現れるようにスラ
ブの圧延方法を工夫(L/C圧延)その先後端部をクロ
ップとしている。しかし、この方法では圧延に時間がか
かる。
Therefore, as a countermeasure, the slab rolling method is devised (L / C rolling) so that the claw marks of the pit crane appear on the front end or the rear end of the material after rolling (the L / C rolling), and the front and rear ends thereof are used as crops. However, this method requires time for rolling.

【0006】一方、チタン、チタン合金等の変形抵抗の
温度依存性の高い金属スラブを加熱炉で加熱するさいに
耐熱性カバーをスラブ上面に載置してスラブの上反りを
防止する熱間圧延方法が提案されている(特開昭59−
232612号公報)。
On the other hand, when a metal slab such as titanium or titanium alloy having a high temperature dependence of deformation resistance is heated in a heating furnace, a heat resistant cover is placed on the upper surface of the slab to prevent the warpage of the slab. A method has been proposed (JP-A-59-59).
232612).

【0007】しかし、この方法におけるカバーは特殊金
属スラブの上反り防止のためであって、軟質金属スラブ
の保温をするためのものではない。また、圧延用スラブ
の下に抽出用スラブを敷く考え方はない。
However, the cover in this method is to prevent the warp of the special metal slab and not to keep the soft metal slab warm. Also, there is no concept of laying the extraction slab under the rolling slab.

【0008】[0008]

【発明が解決しようとする課題】本発明は、軟質金属ス
ラブにピットクレ−ンの爪跡を残さずに、加熱炉にスラ
ブを装入・抽出し、圧延能率を向上させることのできる
軟質金属スラブの圧延方法を得ることを課題としてい
る。
DISCLOSURE OF THE INVENTION The present invention provides a soft metal slab capable of improving rolling efficiency by charging and extracting the slab into a heating furnace without leaving a pit-claw mark on the soft metal slab. The challenge is to obtain a rolling method.

【0009】[0009]

【課題を解決するための手段】本発明の軟質金属スラブ
の圧延方法は、抽出用下敷スラブの上に圧延用中間軟質
金属スラブを重ねた二重スラブと保温用上乗スラブとを
別々にバッチ式加熱炉に装入すること、加熱後、ピット
クレーンによって加熱炉内で前記二重スラブの上に前記
保温用上乗スラブを乗せて三重スラブにすること、該三
重スラブをピットクレーンによって加熱炉から抽出して
圧延ラインのローラテーブル上に置くこと、該三重スラ
ブをローラテーブルによって圧延機入側付近まで搬送す
ること、サイドガイドにより前記三重スラブの保温用上
乗スラブのみを固定した後、ローラテーブルによって前
記二重スラブを圧延機側に前進させること、前記サイド
ガイドを解除した後、ローラテーブルによって前記保温
用上乗スラブおよび前記二重スラブを加熱炉側に後退さ
せること、前記二重スラブの圧延用中間スラブのみを前
記サイドガイドにより固定した後、ローラテーブルによ
って前記抽出用下敷スラブのみを加熱炉側に後退させる
こと、前記圧延用中間スラブをローラテーブルによって
圧延機に送り込むこと、該圧延用中間スラブを圧延機に
よって圧延することからなる手段によって、上記課題を
解決している。
A method for rolling a soft metal slab according to the present invention is a method in which a double slab in which an intermediate soft metal slab for rolling is superposed on an underlay slab for extraction and a heat retaining top slab are separately batched. Charging into a heating furnace, and after heating, the heating slab is placed on the double slab in the heating furnace by a pit crane to form a triple slab, and the triple slab is heated by a pit crane. Extracted from the rolling table and placed on a roller table of the rolling line, the triple slab is conveyed to the vicinity of the rolling mill entrance side by a roller table, and after fixing only the heat-insulating slab of the triple slab by a side guide, the roller The double slab is moved forward to the rolling mill side by a table, the side guide is released, and then the heat retaining top slab and Retracting the double slab to the heating furnace side, after fixing only the intermediate slab for rolling of the double slab by the side guide, only retreating the extraction underlay slab to the heating furnace side by a roller table, The problem is solved by means of feeding the rolling intermediate slab to the rolling mill by means of a roller table and rolling the rolling intermediate slab by means of the rolling mill.

【0010】前記三重スラブは、各スラブの幅または長
さのうち長辺側サイズが上から順に大、中、小となるよ
うに重ねられることが好ましい。
It is preferable that the triple slabs are stacked so that the size of the long side of the width or length of each slab becomes larger, middle, and smaller in order from the top.

【0011】前記抽出用下敷スラブおよび前記保温用上
乗スラブは、ステンレス鋼からできていることが好まし
い。
The extraction underlay slab and the heat retaining upper slab are preferably made of stainless steel.

【0012】[0012]

【作用】加熱炉内の三重スラブの下敷スラブをピットク
レーンによって挟むので、圧延用中間スラブに爪跡を残
さない。3種のスラブの幅または長さがそれぞれ相違し
ているので、圧延機入側にあるサイドガイドを有効に利
用して各スラブを順次分離する。
[Function] Since the underlay slab of the triple slab in the heating furnace is sandwiched by the pit crane, no claw marks are left on the intermediate slab for rolling. Since the three types of slabs have different widths or lengths, the slabs are sequentially separated by effectively utilizing the side guides on the rolling mill entrance side.

【0013】[0013]

【実施例】図1を参照して、本発明の軟質金属スラブの
圧延方法の実施例について説明する。図1は、本発明の
圧延方法の工程を示す概略説明図である。
EXAMPLE An example of the method for rolling a soft metal slab according to the present invention will be described with reference to FIG. FIG. 1 is a schematic explanatory view showing the steps of the rolling method of the present invention.

【0014】本発明の軟質金属スラブの圧延方法は、図
1に示すように、次の工程からできている。まず、
(A)、(B)図に示すように、抽出用下敷スラブ11
の上に圧延用中間軟質金属スラブ12を重ねた二重スラ
ブ20と保温用上乗スラブ13とを別々にバッチ式加熱
炉14に装入する。次いで、(C)図に示すように、加
熱後、ピットクレーン2(図3)によって加熱炉14内
で二重スラブ20の上に保温用上乗スラブ13を乗せて
三重スラブ30にする。
The method of rolling a soft metal slab of the present invention comprises the following steps, as shown in FIG. First,
As shown in FIGS. (A) and (B), the underlayment slab 11 for extraction
The double slab 20 in which the intermediate soft metal slab 12 for rolling is superposed on it and the heat-insulating slab 13 are separately charged into the batch-type heating furnace 14. Next, as shown in FIG. 3C, after heating, the heat retaining mounting slab 13 is placed on the double slab 20 in the heating furnace 14 by the pit crane 2 (FIG. 3) to form the triple slab 30.

【0015】この三重スラブ30は、図2に示すよう
に、各スラブ11、12、13の幅または長さのうち長
辺側サイズが上から順に大、中、小となるように重ねる
ことが好ましい。このときの寸法差は、それぞれ100
mm程度が好ましい。また、抽出用下敷スラブ11およ
び保温用上乗スラブ13は、ステンレス鋼からつくられ
ることが好ましい。
As shown in FIG. 2, this triple slab 30 may be stacked so that the size of the long side of the width or length of each slab 11, 12, 13 is large, medium, and small in order from the top. preferable. The dimensional difference at this time is 100
About mm is preferable. In addition, the extraction underlay slab 11 and the heat retaining upper slab 13 are preferably made of stainless steel.

【0016】(D)図に示すように、三重スラブ30を
ピットクレーン2(図3)によって加熱炉14から抽出
して圧延ラインのローラテーブル(図示せず)上に置
く。このとき、抽出用下敷スラブ11を後述するサイド
ガイド15で挟みやすくするために三重スラブ30を9
0度ターンさせる場合もある。
As shown in FIG. (D), the triple slab 30 is extracted from the heating furnace 14 by the pit crane 2 (FIG. 3) and placed on a roller table (not shown) in the rolling line. At this time, the triple slab 30 is set to 9 in order to easily sandwich the extraction underlay slab 11 with the side guides 15 described later.
It may be turned 0 degrees.

【0017】(E)、(F)図に示すように、三重スラ
ブ30をローラテーブル(図示せず)によって圧延機4
(図3)の入側付近まで搬送し、そして、サイドガイド
15により三重スラブ30の保温用上乗スラブ13のみ
を固定した後、ローラテーブルによって二重スラブ20
を圧延機4側に前進させる。
As shown in (E) and (F), the triple slab 30 is rolled by a roller table (not shown) into a rolling mill 4.
(FIG. 3) is conveyed to the vicinity of the entrance side, and after the side guide 15 fixes only the heat retaining upper slab 13 of the triple slab 30, the double slab 20 is fixed by the roller table.
To the rolling mill 4 side.

【0018】次に、(G)図に示すように、サイドガイ
ド15を解除した後、ローラテーブルによって保温用上
乗スラブ13および二重スラブ20を加熱炉14側に後
退させる。
Next, as shown in FIG. 3G, after the side guides 15 are released, the heat retaining upper slab 13 and the double slab 20 are retracted toward the heating furnace 14 by the roller table.

【0019】(H)、(I)図に示すように、二重スラ
ブ20の圧延用中間スラブ12のみをサイドガイド15
により固定した後、ローラテーブルによって抽出用下敷
スラブ11のみを加熱炉側に後退させる。
As shown in FIGS. 1H and 1I, only the rolling intermediate slab 12 of the double slab 20 is provided with the side guides 15.
After fixing by, the extraction table slab 11 alone is retracted to the heating furnace side by the roller table.

【0020】(J)図に示すように、圧延用中間スラブ
12をローラテーブルによって圧延機4に送り込む。
As shown in (J), the rolling intermediate slab 12 is fed into the rolling mill 4 by a roller table.

【0021】そして、最後に、圧延用中間スラブ12を
圧延機4によって圧延する。
Finally, the rolling intermediate slab 12 is rolled by the rolling mill 4.

【0022】本発明の方法の具体的実施例について、以
下に説明する。
Specific examples of the method of the present invention are described below.

【0023】各種スラブの寸法は下記のとおりである。The dimensions of the various slabs are as follows.

【0024】 製品寸法は、厚み11mm×幅2000mmである。材
料の加熱温度は780°Cである。圧延用中間スラブの
材料成分は、Cu60wt%、Zn38.5wt%、S
n1.0wt%、残部は不可避不純物からなる。
[0024] The product dimensions are 11 mm thick and 2000 mm wide. The heating temperature of the material is 780 ° C. The material components of the intermediate slab for rolling are Cu 60 wt%, Zn 38.5 wt%, S
n1.0 wt%, the balance consisting of unavoidable impurities.

【0025】圧延結果、幅不足発生率はゼロであり、圧
延中の板反り発生率は5%であり、スケール押込み、疵
発生率は1%であった。
As a result of rolling, the width shortage occurrence rate was zero, the plate warpage occurrence rate during rolling was 5%, and the scale indentation and flaw occurrence rates were 1%.

【0026】比較例とて圧延用スラブ(長さ1500m
m×幅1000mm×厚み188mm)を製品寸法厚み
11mm×幅2000mmに圧延した。ピットクレーン
による爪跡の幅凹量は50〜100mmであり、幅不足
発生率は100%であり、圧延中の板反り発生率は20
%であり、スケール押込み疵は5%であった。
As a comparative example, a rolling slab (length 1500 m)
m × width 1000 mm × thickness 188 mm) was rolled to a product size of thickness 11 mm × width 2000 mm. The claw trace width concave amount by the pit crane is 50 to 100 mm, the width shortage occurrence rate is 100%, and the plate warpage occurrence rate during rolling is 20%.
%, And the scale indentation flaw was 5%.

【0027】[0027]

【発明の効果】本発明によれば、加熱炉からの抽出時に
圧延スラブにピットクレーンによる爪跡が残らず、圧延
機搬送までの移送時の温度降下が少なく、圧延スラブの
上反りも防止できる。
According to the present invention, no claw marks are left on the rolling slab by the pit crane during extraction from the heating furnace, the temperature drop during transfer to the rolling mill is small, and the warp of the rolling slab can be prevented.

【図面の簡単な説明】[Brief description of drawings]

【図1】 本発明の圧延方法の工程を示す概略説明図で
ある。
FIG. 1 is a schematic explanatory view showing steps of a rolling method of the present invention.

【図2】 本発明にもとづいて重ねた三重スラブの平面
図である。
FIG. 2 is a plan view of triple slabs stacked in accordance with the present invention.

【図3】 従来の圧延方法の工程を示す概略説明図であ
る。
FIG. 3 is a schematic explanatory view showing steps of a conventional rolling method.

【符号の説明】[Explanation of symbols]

11:抽出用下敷スラブ 12:圧延用中間スラブ 13:保温用上乗スラブ 14:バッチ式加熱炉 15:サイドガイド 11: Underlay slab for extraction 12: Intermediate slab for rolling 13: Upper slab for heat retention 14: Batch type heating furnace 15: Side guide

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 抽出用下敷スラブの上に圧延用中間軟質
金属スラブを重ねた二重スラブと保温用上乗スラブとを
別々にバッチ式加熱炉に装入すること、加熱後、ピット
クレーンによって加熱炉内で前記二重スラブの上に前記
保温用上乗スラブを乗せて三重スラブにすること、該三
重スラブをピットクレーンによって加熱炉から抽出して
圧延ラインのローラテーブル上に置くこと、該三重スラ
ブをローラテーブルによって圧延機入側付近まで搬送す
ること、サイドガイドにより前記三重スラブの保温用上
乗スラブのみを固定した後、ローラテーブルによって前
記二重スラブを圧延機側に前進させること、前記サイド
ガイドを解除した後、ローラテーブルによって前記保温
用上乗スラブおよび前記二重スラブを加熱炉側に後退さ
せること、前記二重スラブの圧延用中間スラブのみを前
記サイドガイドにより固定した後、ローラテーブルによ
って前記抽出用下敷スラブのみを加熱炉側に後退させる
こと、前記圧延用中間スラブをローラテーブルによって
圧延機に送り込むこと、該圧延用中間スラブを圧延機に
よって圧延することからなる軟質金属スラブの圧延方
法。
1. A double slab in which an intermediate soft metal slab for rolling is layered on an underlayment slab for extraction and a heating slab for heating are separately charged into a batch type heating furnace, and after heating, by a pit crane. Placing the heat-insulating slab on the double slab in a heating furnace to form a triple slab, extracting the triple slab from the heating furnace by a pit crane and placing it on a roller table of a rolling line, Transporting the triple slab to the vicinity of the rolling mill entrance side by the roller table, after fixing only the heat-insulating slab of the triple slab by the side guide, advance the double slab to the rolling mill side by the roller table, After releasing the side guide, the roller table is used to retract the heat retaining upper slab and the double slab toward the heating furnace, After fixing only the rolling intermediate slab of the slab by the side guide, only the extraction underlay slab is retracted to the heating furnace side by the roller table, the rolling intermediate slab is sent to the rolling mill by the roller table, A method for rolling a soft metal slab, which comprises rolling an intermediate slab for rolling with a rolling mill.
【請求項2】 前記三重スラブは、各スラブの幅または
長さのうち長辺側サイズが上から順に大、中、小となる
ように重ねられていることを特徴とした請求項1記載の
圧延方法。
2. The triple slab is stacked so that the size of the long side of the width or length of each slab is large, medium, and small in order from the top. Rolling method.
【請求項3】 前記抽出用下敷スラブおよび前記保温用
上乗スラブがステンレス鋼からできていることを特徴と
した請求項1記載の圧延方法。
3. The rolling method according to claim 1, wherein the underlay slab for extraction and the upper slab for heat retention are made of stainless steel.
JP5036486A 1993-02-25 1993-02-25 Rolling method of soft metal slab Expired - Lifetime JP2658797B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5036486A JP2658797B2 (en) 1993-02-25 1993-02-25 Rolling method of soft metal slab

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5036486A JP2658797B2 (en) 1993-02-25 1993-02-25 Rolling method of soft metal slab

Publications (2)

Publication Number Publication Date
JPH06246328A true JPH06246328A (en) 1994-09-06
JP2658797B2 JP2658797B2 (en) 1997-09-30

Family

ID=12471158

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5036486A Expired - Lifetime JP2658797B2 (en) 1993-02-25 1993-02-25 Rolling method of soft metal slab

Country Status (1)

Country Link
JP (1) JP2658797B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013188791A (en) * 2012-03-15 2013-09-26 Daido Steel Co Ltd Rolling method of steel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013188791A (en) * 2012-03-15 2013-09-26 Daido Steel Co Ltd Rolling method of steel

Also Published As

Publication number Publication date
JP2658797B2 (en) 1997-09-30

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