JPS5933006A - Method for preventing rupture of plate in cold rolling - Google Patents
Method for preventing rupture of plate in cold rollingInfo
- Publication number
- JPS5933006A JPS5933006A JP14382482A JP14382482A JPS5933006A JP S5933006 A JPS5933006 A JP S5933006A JP 14382482 A JP14382482 A JP 14382482A JP 14382482 A JP14382482 A JP 14382482A JP S5933006 A JPS5933006 A JP S5933006A
- Authority
- JP
- Japan
- Prior art keywords
- rolling
- edge crack
- length
- plate
- tension
- 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.)
- Pending
Links
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
- B21B1/28—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 cold-rolling, e.g. Steckel cold mill
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B33/00—Safety devices not otherwise provided for; Breaker blocks; Devices for freeing jammed rolls for handling cobbles; Overload safety devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は冷間圧延における板破断防止方法に係り、詳し
くは、ホットコイルの厚、みから、トニタルで60優月
上、圧下・′ケ加える・圧延機スタンドの、下流i#l
l1vcお:いてに、・必要に応じ低張力圧延を行なつ
、て圧延中の板破断ケ防止・すゐ冷間圧処方法に係る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for preventing plate breakage during cold rolling, and more specifically, the thickness and appearance of hot coils are 60 mm or more, rolling, adding, and rolling mill stands. downstream i#l
l1vcO: In addition, ・Perform low-tension rolling as necessary to prevent plate breakage during rolling.・Relate to the cold rolling method.
一般のタンデム・□ミルにおいては、スンレド間の張力
とじて「延相′め変珍低抗の1″5〜365〜36パチ
′@を付方1ルて庄4Lヶ朽橙うている□。In a general tandem/□ mill, the tension between the two leads is 1"5 to 365 to 36 cracks with a low resistance of 1" to 4L. .
こn:―゛あ!′□わ低張力に丁あと玉タンド間f板の
絞シf尭生1やすぐ瀝るどiもあ2が、□そn□−iノ
上に圧延荷重か増大し、1品の荊状會悪什8ぜたり、ヒ
ニト・□ス゛□りjツテの発生t:S増大fib″ため
に午産能i整底下6ぜざΣヶ得な(なるからであるすそ
の九め’K、i業上出米2尼は高い張力□で圧延な行な
う□。 □−′□□: □ 5゛一方、普通−のE
I:aにおいては、ホットゴ4ル倉その1省冷佃圧柾會
□行jうが、支げ仮端部會ニトリ4ングし□て1冷間圧
a′子る一□いすn、に尤ソも□:ホツドゴイル状゛顧
がらトータルで60優以上の゛圧下f加えΔと之 板端
部に)□コ□ギ訓状の耳゛荒1fL′ある区は耳−L−
61失し、耳割れが□大きくガると板破断會雀ず暮。゛
この板″6I/Wrば通常の□圧鉦:”張力下ヤ発□生
*□′るご□どが多く、トータル□圧下率の高い(特に
10チ9上)圧砥會多く行なうミ慕では、設備の稼動率
w’tB’H上吃叶下□δゼ?いる、
。Kon:-゛Ah! '□The rolling force of the plate between the ball stands and the rolling force 1 and 2, which immediately die under low tension, is increased due to the rolling load on the Due to the bad situation, the 8th occurrence of the problem, the increase in fib'' causes the production capacity to bottom out and the bottom is lower than 6. □ -'□□: □ 5゛On the other hand, ordinary - E
I: In a, the hot gong 4 storage room 1 cold pressure □ is carried out, but the supporting temporary end is nitrided 4 □ and 1 cold pressure □ is applied to the 1 □ chair n. Of course, □: A total of 60 or more ゛pressure f was applied to the edge of the board) while looking at the hot goil shape.
61 was lost, and the ear cracked □ and the board broke and the board broke.゛If this plate is 6I/Wr, it is a normal □pressure gong: ``There is a lot of pressure under tension, and there are many □Rugs, and the total □reduction rate is high (especially 10 inches and 9 tops). At Mu, the operating rate of the equipment w'tB'H is above □δze? There is,
.
いては不明な点か多:<、同一ロット材e)庄・延で□
・□も耳1lllれ状況を異なることが多いため、板
破断 。There are many unknown points: <, same lot material e) Sho/Nobu□
・□ also has different cracking conditions in each ear, so the board breaks.
の可能性が昼すからと言って安易に低張力圧延 □ケ
笑施すると、圧−一を低下させることになる。If you apply low-tension rolling just because there is a possibility of this happening, it will lower the rolling force.
そこで、本発明方法において汀、板端部の耳側1.長芒
會検出し、必要4時に低張力圧延全行□なうことによっ
て総合的に高い圧延能率ケ確保する冷間圧延方法番提、
供する。Therefore, in the method of the present invention, 1. A cold rolling method that detects long rolling and performs low tension rolling on all rows at the necessary time to ensure overall high rolling efficiency.
provide
すなわち、不発明方、伝−複数個の圧aaスタンドを有
する冷間Ei:延機でホットコイルヶ冷間圧妙する際に
、出側のay延、材のホラトコ・イルからのトータル圧
下率が60 % ’fr越える圧延機スタンドより下流
側の1個若しくH2個辺上の圧延機スタンドの出ll1
lVcおいて、板端部の耳側れ長毛音測定し、この]4
−割れ長石が圧延条件に応じて設定した基準耳1Ill
f′L、長ちより長い時には低張力圧延全行なうことを
%徴とする。That is, in the case of cold rolling with a plurality of rolling mills, the total reduction rate from the exit side ay rolling and the horizontal rolling of the material is 60. % 'fr Exceeding of the rolling mill stand on one or H2 sides downstream from the rolling mill stand ll1
At lVc, measure the long hair sound at the end of the plate, and measure this]4
- Standard ear 1Ill of cracked feldspar set according to rolling conditions
When f'L is longer than the length, low tension rolling is performed completely as a percentage.
、 N下、本発明方法について詳しく貌明する。, N below, the method of the present invention will be explained in detail.
、、x′17、本発明者らに、冷間圧姶時の付加張力□
ニール断i率との関係Iめたところ、第1図、、、、、
+7/示す通りであった。。,, x'17, the inventors have determined that the additional tension during cold pressing □
The relationship with the Neil rupture rate is shown in Figure 1.
+7/It was as shown. .
第1図に最終のトータル「下編9□2.5%の場合であ
って、+4〜5スタンド間張力に関するものである。第
1しjから明らかな通り、冷間圧altl[延材の変形
抵抗の約lOチル上の張力″1“L、:I”C“て、−
、”−助舶旬急札7“る。Figure 1 shows the final total of 9□2.5% for the lower part and relates to the tension between +4 and 5 stands. Tension ``1''L, :I''C'' on about lO chill of deformation resistance, -
,"-Sukeshipunkyufuda 7"ru.
一万、板破断kr1.@する輯端部9耳11tlf1.
tff、トリミング時のかえシ、1.圧蝉材へ、の異物
の混入、圧延中のミルバイト内刃のや力状態に、影Vさ
れるものの、その耳側tzLy)桐炭、と板破断とのj
…にFi密接な関係がある。この点につき本発明者らが
ψト究したところ、第2図に示す通シであった。10,000, plate breakage kr1. @ bending end 9 ears 11tlf1.
tff, map for trimming, 1. Although this is affected by the contamination of foreign matter into the pressed cicada material and the force condition of the inner blade of Milvite during rolling, there is a possibility that the edge side of the paulownia charcoal and plate breakage may occur.
Fi is closely related to... When the present inventors investigated this point, the result was as shown in FIG. 2.
第2図1は最終スタンド出側の吾−thllれの板端部
〃・らの侵入長さと破断発生率の関係ケ示したものでお
って、第2図に示す如(1,I!1lJf’l−長もか
約10隨9上になると破断率が急増している。Figure 2 1 shows the relationship between the penetration length and the incidence of fracture at the end of the plate on the exit side of the final stand. When the length increases to about 10 mm, the rupture rate increases rapidly.
要するに%第1図ならびに第2図に示す関係から、板破
断に1.圧延中の耳側れ長芒會検出して、そn、ケある
基準値(この基準値は圧延条件費、ら決めらj、るもの
で、上記のし」でに10闘)9下に設定することによシ
嫉助発色率に小豆(抑えることが出来ること、
基準値9上の耳ll4f1.長塾ケ有するものにおいて
は、設定張力、(第1図に示すし0てa変形抵抗の10
%)μノ下で東張力圧延’を行なうこと、等によって破
断発生率は小豆(抑えることが出来る。 。In short, from the relationships shown in Figures 1 and 2, it can be concluded that 1. Detecting the side-to-side deviation during rolling, and then lowering it to a certain standard value (this standard value is determined by the rolling condition cost, and the above-mentioned 10 times) By setting the color development rate of adzuki bean, it is possible to suppress the color development rate above the standard value 9. For those with Nagajuku, set tension, (as shown in Figure 1) 10
%) The incidence of fractures can be suppressed by performing tension rolling under a certain temperature.
7た、耳側fL、に通掌ト下タル圧)1率60饅川上で
発生するものであって、圧i[より第3図に示す如く、
圧延材6の板、端部6aにおいて隙間。7, the palm pressure on the ear side fL) is generated above the 1 rate 60 yen, and the pressure i [as shown in Fig. 3,
A gap at the end 6a of the plate of the rolled material 6.
y−fr+する。ことから、耳側□、n検出に通常の方
法、たとえば、弗元器とその・受光器とから成る検出装
装置によって検出できる。1.た、耳@IJfLj−1
ホットコ、イルからのトータル圧下率が約60%9上。y-fr+. Therefore, the ear side □,n can be detected by a conventional method, for example, by a detection device consisting of a fluorometer and its photoreceiver. 1. Ta, ear @IJfLj-1
The total reduction rate from hotco and il is approximately 60%9.
で発生することから、耳1111t″L長芒の検出に通
常の、タンデム・ミルエに4+3スタンドJ−J降で行
なえば十分である。ただし、板破断の発生に、トータル
の圧下率が高く、しかも設定張力の高い最終段什a轡會
含む圧延機スタンド間に設置するのか最も有効である。Therefore, it is sufficient to detect the ear 1111t''L long awn using the normal tandem mille with 4+3 stand J-J descending.However, the total reduction rate is high and the plate breakage occurs Moreover, it is most effective to install it between the rolling mill stands including the final stage abutment, which has a high tension setting.
そこで、本発明方法について第4図に示す圧延装置によ
って詳しくa明・すると、次の通シである。・
1ず、第4図は本発明方法會笑施″′r4)装置の一し
11の配#にし1であって、#!5図に示す圧延装置6
5つのス、ノンド′f具え□る夕1ンデム・、ミルであ
って、≠4スタンドの出ll1lK、耳割れ長さ検出装
に9が設置さnでいる。 。Therefore, the method of the present invention will be explained in detail using the rolling apparatus shown in FIG. 4 as follows.・First, FIG. 4 shows the arrangement of the rolling device 11 in which the method of the present invention is carried out.
It is a mill equipped with 5 units, nondo'f, and ≠4 stands, and 9 is installed in the ear crack length detection device. .
”−z”r、 co4″″′1゛゛4″″j(i−!?
。 旨に+4〜5スタンド間の張力制御が行なわれ
る。"-z"r, co4""'1゛゛4""j (i-!?
. In effect, tension control is performed between +4 and +5 stands.
また、m4図において符号] a、 2a、 3a’
b4a、58に各スタンドのワークロール、Ib。Also, in the m4 diagram, the symbols] a, 2a, 3a'
b4a, 58 is the work roll of each stand, Ib.
2b、3b、4b、5bU駆動モータ、lc、
。2b, 3b, 4b, 5bU drive motor, lc,
.
2C,3C,・・4c、5cは圧下装置、■は・圧延
:1.11
材、■5.■にそ□ぞ□さイオ7.リー、ヤとヶ、
■□□
ジョン・リールを示す。2C, 3C,... 4c, 5c are rolling devices, ■ is rolling
:1.11 Material, ■5. ■Niso□zo□Saio7. Lee, Yatoga,
■□□ Indicates John Leal.
上記のEi−妙装附におhて通常の如く圧延する場合に
、第5図1で笑hT示す張力下で圧延筋九でいる。本発
明万frによると、圧押中に検出装kQ&cおいて耳割
j71.長もが検出さ12、第2図の点紡で示す基準値
會越えた場合Kf−J、検出装置9からの信号を板破断
制御装置ioに送り、この耳削れ投石か基準耳111J
A長さ設定装置11からの基準長芒會越えたと判断し7
′!:場合には、オン信号ケ制御装(至)32に送り、
例えば、第1図に示す例から決する許容張力C第】ν)
の点線領域1に圧延条件415図の点線で示す如く制御
する(なお、設定装置]に晶i杯毎にt □準耳側1.
長ぢケ設定しておく)。When rolling is carried out in the usual manner with the above-mentioned Ei-h condition, the rolling bar is under the tension shown in FIG. According to the tenth aspect of the present invention, during pressing, the detection device kQ&c detects the ear split j71. If a long piece is detected 12 and exceeds the reference value shown by the point spinning in Fig. 2, the signal from the detection device 9 is sent to the plate breakage control device io, and the signal is sent to the plate breakage control device io to determine whether this selvedge is stoned or the reference selvage 111J.
It is determined that the reference length from the A length setting device 11 has been exceeded.7
′! : If so, send the on signal to the control device (to) 32,
For example, the allowable tension C]ν) determined from the example shown in FIG.
In the dotted line area 1, the rolling conditions are controlled as shown by the dotted line in Figure 415 (setting device).
Set it to a long time).
1だ、このように張カケ低減した場合には轟然製品厚に
iくなるので、制御装置12により自動的に正規の板厚
が得らfLるように仙のH−延条件への制御、たとえば
″+3〜4スタンド間張カケアップするような制御か行
なわ1.る。このように本発明方法によって板破断が予
想さnる材料すべてケ低張力圧蝙するよp屯、又、板破
断の危険性tおかして圧延するよりも、局部的Vr低盛
力圧延するため、高因住産能率が達成できる。1. If the tension chipping is reduced in this way, the product thickness will increase dramatically, so the control device 12 automatically controls the H-rolling conditions so that the normal plate thickness is obtained. For example, control is carried out such that the tension is increased by +3 to 4 stands.1. In this way, by the method of the present invention, all materials that are expected to break in the plate will be subjected to low tension stress, and Rather than rolling at the risk of risk, high production efficiency can be achieved by locally rolling with low Vr build-up force.
更に、(イ)、従来法によって仮破断ケ許容して庄砥し
fc場場合、(ロ)、仮破1er會防止するために低張
力圧延した場合と、(ハ)%本発明方法で圧延した場合
とについて、トータル圧下率に対する圧l#、能4+ケ
求めたとqろ、第6図に示す通りの結果が得らfした。Furthermore, (a) the case where the conventional method allows temporary breakage and the fc field is polished, (b) the case where low tension rolling is performed to prevent the temporary breakage, and (c) the case of rolling with the method of the present invention. When the pressure 1# and the capacity 4+ were calculated for the total rolling reduction ratio, the results shown in FIG. 6 were obtained.
第′6図において符号(イ)σ従来法、(ロ)は低張力
圧延、(9に本究明法か示し、このMj来から、、本発
明方法によると格段に潰れたEi=蝙が達成されること
かわかる。In Fig. 6, symbol (a) is σ conventional method, (b) is low tension rolling, (9 is the method of the present study, and from this Mj, according to the method of the present invention, a significantly crushed Ei = frog is achieved. I know what will happen.
旬上詳しく説明した通ジ、本発明@は、し1卿、<D
Ef=、延機スタンドν)上ケ有する冷間圧a−でホッ
トコイルf冷間圧延する際に、出御の圧a材のホットコ
イルからのトータル圧下率が60qbケ越える仕延憬ス
タンドより下流鋼の1個若しくは2個旬上の圧延機スタ
ンドの中側において、板端部の再割れ長さ倉測定1、こ
の再割れ長名か圧延条件に応ピて設定した基準耳fJn
長さより長い時Kに低張力圧机會行なうものである。As explained in detail earlier, the present invention @ is by Lord Shi1, <D
Ef=, rolling mill stand ν) When cold rolling the hot coil f with the cold pressure a- with the upper roller, the total reduction rate from the hot coil of the rolled material a exceeds 60 qb from the finishing stand. On the inside of the rolling mill stand above one or two pieces of downstream steel, measure the re-crack length of the plate end 1, and use the name of this re-crack length or the standard ear fJn set according to the rolling conditions.
When the length is longer than the length, a low tension pressure mechanism is applied to K.
従って、ホットコイルの冷間圧柾時に板端部の破断・が
有効に防止できる上に、低張力圧延に局部的に行なうに
過ぎないため、圧延能率が低下することがない。Therefore, breakage of the plate end portions can be effectively prevented during cold rolling of the hot coil, and since the rolling is carried out only locally at low tension, rolling efficiency does not decrease.
第1釦にF3:延機スタンドにおhるワ加張力と破断発
生率との関係會示すグラフ、第28!Jは破断発生率と
再割れ長石との関俤?示すグラフ、第3図に根端部の再
割n、の一例の説明図、第4因に本発明方法ケ集施jる
装置の一例の配置図、第5図a本発明方法と従来例とで
張力制御態様j比較して示す断明図、第6図は本発明法
、従来法、低張力圧延法の圧延能重分示すグラフである
。
符 号1a〜5a・・・・・・圧a機ワークロール1b
〜5b・−・・・・圧延機の駆動装Tk′IC〜5C・
・・・・・圧a機の圧下装置6・・・・・・圧延材 7
・・・・・・ペイオフ・リールII ’
””’ (918・・・・・・テンション−リール
9・・・・・・耳側n、長さ検出装置
10・・・・・・耳tt+r+−制御装置]2・・・・
・・圧延機の制御装澹
特許出−人 111崎製鉄株式会社
代理人弁理士松下義勝
弁詐士側島文雄
1″・ 。
〆 、 。
:′□
□
a(1′
第3図
□ 第5図
第す図
トータル刀「五季(%)1st button F3: Graph showing the relationship between the tension applied to the rolling mill stand and the fracture occurrence rate, No. 28! Is J the relationship between fracture incidence and re-cracked feldspar? Fig. 3 is an explanatory diagram of an example of the re-division of the root end, and the fourth factor is a layout diagram of an example of a device that implements the method of the present invention, and Fig. 5 a shows the method of the present invention and a conventional example. FIG. 6 is a graph showing the rolling capacity of the method of the present invention, the conventional method, and the low tension rolling method. Codes 1a to 5a... Pressure machine work roll 1b
~5b---Rolling mill drive unit Tk'IC~5C・
...Reducing device of the rolling machine 6 ...Rolled material 7
...Payoff Reel II'
""' (918... tension reel 9... ear side n, length detection device 10... ear tt+r+- control device) 2...
...Rolling mill control system patent originator: 111 Saki Steel Co., Ltd. Patent attorney Yoshikatsu Matsushita Fraudulent Fumio Sajima 1''. Diagram: Total sword "Five seasons (%)"
Claims (1)
・コイルケ冷間圧延する・際VcJ出側:の圧・延材の
ホットコイルからのトータル圧下率が60優を越える圧
延機スタンドより□下流側の1:・個若定した。基準再
割れ長・・さ□より・長い時VC#″r低張力圧延ケ行
なうことケ特徴とする冷間Ek:地における:板破断・
防止方、法。・Hot coil cold rolling is carried out in a cold rolling mill with multiple rolling mill stands. Side 1: ・The individual was determined. When the standard re-crack length is longer than □, VC#''r low tension rolling is performed Characteristic cold Ek: In the ground: Plate fracture
Prevention methods, laws.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14382482A JPS5933006A (en) | 1982-08-18 | 1982-08-18 | Method for preventing rupture of plate in cold rolling |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14382482A JPS5933006A (en) | 1982-08-18 | 1982-08-18 | Method for preventing rupture of plate in cold rolling |
Publications (1)
Publication Number | Publication Date |
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JPS5933006A true JPS5933006A (en) | 1984-02-22 |
Family
ID=15347803
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP14382482A Pending JPS5933006A (en) | 1982-08-18 | 1982-08-18 | Method for preventing rupture of plate in cold rolling |
Country Status (1)
Country | Link |
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JP (1) | JPS5933006A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105057365A (en) * | 2015-07-21 | 2015-11-18 | 首钢京唐钢铁联合有限责任公司 | Control method for preventing strip steel finish rolling drift |
CN115087504A (en) * | 2020-08-12 | 2022-09-20 | 普锐特冶金技术日本有限公司 | Control device for rolling device, rolling facility, and method for operating rolling device |
-
1982
- 1982-08-18 JP JP14382482A patent/JPS5933006A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105057365A (en) * | 2015-07-21 | 2015-11-18 | 首钢京唐钢铁联合有限责任公司 | Control method for preventing strip steel finish rolling drift |
CN105057365B (en) * | 2015-07-21 | 2016-11-30 | 首钢京唐钢铁联合有限责任公司 | Control method for preventing strip steel finish rolling drift |
CN115087504A (en) * | 2020-08-12 | 2022-09-20 | 普锐特冶金技术日本有限公司 | Control device for rolling device, rolling facility, and method for operating rolling device |
US20230115961A1 (en) * | 2020-08-12 | 2023-04-13 | Primetals Technologies Japan, Ltd. | Control device for rolling mill apparatus, rolling mill facility, and operation method for rolling mill apparatus |
EP4144452A4 (en) * | 2020-08-12 | 2023-05-24 | Primetals Technologies Japan, Ltd. | Control device for rolling device, rolling equipment, and method for operating rolling device |
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