WO1999024181A1 - Verfahren und einrichtung zum kontinuierlichen schneiden beim warmwalzen - Google Patents
Verfahren und einrichtung zum kontinuierlichen schneiden beim warmwalzen Download PDFInfo
- Publication number
- WO1999024181A1 WO1999024181A1 PCT/DE1998/003132 DE9803132W WO9924181A1 WO 1999024181 A1 WO1999024181 A1 WO 1999024181A1 DE 9803132 W DE9803132 W DE 9803132W WO 9924181 A1 WO9924181 A1 WO 9924181A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- metal strip
- cutting
- scissors
- rollers
- driver
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
-
- 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
- B21B37/48—Tension control; Compression control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D25/00—Machines or arrangements for shearing stock while the latter is travelling otherwise than in the direction of the cut
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D36/00—Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock which the latter is travelling otherwise than in the direction of the cut
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
- B21B2015/0014—Cutting or shearing the product transversely to the rolling direction
-
- 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
- B21B37/48—Tension control; Compression control
- B21B37/52—Tension control; Compression control by drive motor control
- B21B37/54—Tension control; Compression control by drive motor control including coiler drive control, e.g. reversing mills
-
- 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
- B21B39/006—Pinch roll sets
Definitions
- the invention relates to a method and a device for cutting a metal strip which, in particular at a particularly high speed, runs out of a hot rolling mill and is cut with a pair of scissors arranged behind the hot rolling mill, a driver with two driver rollers being arranged behind the scissors which the metal strip goes through.
- Hot rolling has special requirements when it comes to cutting metal strips, since hot rolling takes place at high strip speeds. This means that hot-rolled strip must also be cut at a high strip speed. Due to cutting at high speeds, an extremely short time is available to switch from the conditions when unthreading from the front band to the conditions necessary for threading the rear band. Especially the speed of the driver rollers behind the scissors has to change very quickly. This is why extreme demands are placed on the low inertia of the drivers. However, these requirements can only be met to a limited extent, so that the cutting of hot-rolled strips with regard to the strip speed has narrow limits.
- a particular problem with the cutting of fast metal strips, in particular with metal strips that run out of a roll stand at a speed of more than 12 m / sec, is the repercussions on the rolling process in front of the shears.
- a particularly important feature is the opening or opening of the driver rollers behind the scissors after the cut. In this way it is possible to largely avoid repercussions by cutting on an upstream rolling process. This in turn makes it possible to reduce the loss in quality of the rolled metal strip due to the cutting process.
- the particular benefit is that cutting is possible even at high speeds without having to set parameters on the drivers that are not or only very difficult to achieve in mechanical engineering.
- the invention is used particularly advantageously for cutting metal strips which run out of a rolling mill faster than 12 m / s.
- the strip tension in the metal strip between the driver rollers and driver rollers arranged in front of the scissors is reduced to a necessary minimum tension. This further reduces the repercussions of the cutting on the rolling process and leads to a particularly precise cut.
- the minimum pull required is the pull in the metal strip that is necessary for the metal strip to be tightened.
- the rear metal strip created by cutting the metal strip is removed from the reel after the driver rollers are opened. sums up.
- the driver rollers are closed after the rear metal strip is gripped by the reel.
- driver rollers are provided in front of and behind the scissors. In this way, a particularly good decoupling between cutting and rolling is achieved in connection with the invention.
- FIG. 1 shows an exemplary embodiment of a cutting device
- Index i designates the system components rewinder (DC), driver rollers (PR1) before the shears, driver rollers (PR2) or work rolls (WR) of the last stand of a rolling mill before the cutting adjustment.
- FIG. 1 shows a cutting device. This has a pair of scissors 10, a frame with driving rollers PR1 in front of the scissors 10, a frame with driving rollers PR2 behind the scissors 10, a reel
- the computing device 11 is connected to the drives of the drive rollers PR1 and PR2, the reel DC and the scissors 10 via a data line 12, which is embodied in an exemplary embodiment of the bus system.
- reference numeral 1 denotes a metal strip and the arrow with reference symbol 2 denotes the running direction of the metal strip 1.
- a rolling mill for rolling the metal strip 1 is arranged in front of the cutting device. The work rolls of the last stand of this rolling mill are designated by WP. After the metal strip 1 has been cut by the scissors. 10, the metal strip 1 is divided into a front part 13 and a rear part 14.
- the reel DC is designed in such a way that it winds the front metal strip 13 and the rear metal strip 14 in different coils.
- a speed controller according to FIG. 2, which has a PI controller 3, is provided for each system component of drive rollers PR1, PR2 and reel DC.
- the target speed vS and the actual speed v are at the input of this PI controller 3. on.
- a predetermined torque M FF , X acts on the limitation of the PI controller 3.
- the PI controller 3 is followed by a PT 2 element 4, at the output of which the motor torque M x results.
- the speed controllers can be operated in 2 modes:
- the PI controller 3 operates in this position of the switch 5 as a normal speed controller and keeps the speed at its setpoint.
- an additional setpoint v Add / 1 of the speed or the speed is added.
- the output of the PI controller 3 is limited by one-sided limitation 31. As a result, if the metal strip 1 breaks, the speed can only increase until it reaches v Add, i v om setpoint is different. In this operating mode, the predetermined torque M FF (i is effective immediately as the engine torque Mi. In this way, a safe operating sequence is achieved.
- the speed controllers are controlled by specifying the mode and the torque M FFfi to be added. These specifications are transferred to the speed controllers via dead times that simulate the real transmission dead times.
- the exemplary sequence of cutting the metal strip is divided into the following phases:
- FIG 3 and the following table show how the speed controllers are controlled in the individual phases:
- Phases 3 and 4 connect directly to one another without a pause, so that the reel pull is reduced from 12 to 0 N / mm 2 without interruption.
- phases 6 and 7 are directly adjacent to one another, so that the reel pull is built up from 0 to 12 N / mm 2 with a continuous ramp.
- Vstrip 16 m / s -OP ⁇ Rl ⁇ 7.2 N / mm 2
- the cutting of the metal strip 1 begins at about 380 m / sec.
- the course of the tension ⁇ PR ⁇ in the metal strip 1 between the work rolls WR and the drive rollers PRl in front of the shears 10 clearly shows the effect of the method according to the invention on the tension behind the work rolls WR. As shown in FIG. 4, this remains almost constant behind the work rolls WR during the cutting process. The cutting process and rolling are thus decoupled, that is to say the cutting of the metal strip does not influence the rolling of the metal strip.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19881709T DE19881709B4 (de) | 1997-11-07 | 1998-10-26 | Verfahren zum Schneiden eines Metallbandes, das aus einer Warmwalzstraße ausläuft, und Vorrichtung zur Durchführung des Verfahrens |
AT0911898A AT409228B (de) | 1997-11-07 | 1998-10-26 | Verfahren und einrichtung zum schneiden beim kontinuierlichen warmwalzen |
US09/530,979 US6435449B1 (en) | 1997-11-07 | 1998-10-26 | Method and device for continuously cutting during hot rolling |
KR1020007004935A KR100545491B1 (ko) | 1997-11-07 | 1998-10-26 | 금속 스트립의 절삭 방법 및 장치 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19749423 | 1997-11-07 | ||
DE19749423.4 | 1997-11-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999024181A1 true WO1999024181A1 (de) | 1999-05-20 |
Family
ID=7848044
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1998/003132 WO1999024181A1 (de) | 1997-11-07 | 1998-10-26 | Verfahren und einrichtung zum kontinuierlichen schneiden beim warmwalzen |
Country Status (6)
Country | Link |
---|---|
US (1) | US6435449B1 (de) |
KR (1) | KR100545491B1 (de) |
CN (1) | CN1148272C (de) |
AT (1) | AT409228B (de) |
DE (1) | DE19881709B4 (de) |
WO (1) | WO1999024181A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7406901B2 (en) * | 2001-12-20 | 2008-08-05 | Kimberly Clark Worldwide, Inc. | Auto sheet threading and cutting device and method |
MX2007004261A (es) * | 2004-10-12 | 2007-06-18 | Fmc Biopolymer As | Sistemas de alginato auto-gelificantes y usos de los mismos. |
CN100453240C (zh) * | 2006-06-12 | 2009-01-21 | 宁波赛盟科技发展有限公司 | 一种多功能连续剖分机 |
CN109868643B (zh) * | 2019-02-21 | 2020-08-04 | 厦门保视丽无尘科技有限公司 | 热分切机的切片装置 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2073080A (en) * | 1980-04-03 | 1981-10-14 | Davy Loewy Ltd | Hot rolling of metal strip |
JPH04147716A (ja) * | 1990-10-11 | 1992-05-21 | Kawasaki Steel Corp | エンドレス熱間圧延における巻取機の切換方法 |
JPH04171116A (ja) * | 1990-11-01 | 1992-06-18 | Mitsubishi Heavy Ind Ltd | 高速走間切断装置 |
JPH07236916A (ja) * | 1994-02-28 | 1995-09-12 | Nisshin Steel Co Ltd | 連続冷間圧延機の出側張力制御方法および装置 |
JPH0890058A (ja) * | 1994-09-21 | 1996-04-09 | Kawasaki Steel Corp | 巻取機ピンチロールの制御方法 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1230994A (de) * | 1967-09-02 | 1971-05-05 |
-
1998
- 1998-10-26 DE DE19881709T patent/DE19881709B4/de not_active Expired - Lifetime
- 1998-10-26 KR KR1020007004935A patent/KR100545491B1/ko not_active IP Right Cessation
- 1998-10-26 CN CNB988102234A patent/CN1148272C/zh not_active Expired - Lifetime
- 1998-10-26 WO PCT/DE1998/003132 patent/WO1999024181A1/de active IP Right Grant
- 1998-10-26 US US09/530,979 patent/US6435449B1/en not_active Expired - Lifetime
- 1998-10-26 AT AT0911898A patent/AT409228B/de not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2073080A (en) * | 1980-04-03 | 1981-10-14 | Davy Loewy Ltd | Hot rolling of metal strip |
JPH04147716A (ja) * | 1990-10-11 | 1992-05-21 | Kawasaki Steel Corp | エンドレス熱間圧延における巻取機の切換方法 |
JPH04171116A (ja) * | 1990-11-01 | 1992-06-18 | Mitsubishi Heavy Ind Ltd | 高速走間切断装置 |
JPH07236916A (ja) * | 1994-02-28 | 1995-09-12 | Nisshin Steel Co Ltd | 連続冷間圧延機の出側張力制御方法および装置 |
JPH0890058A (ja) * | 1994-09-21 | 1996-04-09 | Kawasaki Steel Corp | 巻取機ピンチロールの制御方法 |
Non-Patent Citations (4)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 016, no. 428 (M - 1307) 8 September 1992 (1992-09-08) * |
PATENT ABSTRACTS OF JAPAN vol. 016, no. 474 (M - 1319) 2 October 1992 (1992-10-02) * |
PATENT ABSTRACTS OF JAPAN vol. 096, no. 001 31 January 1996 (1996-01-31) * |
PATENT ABSTRACTS OF JAPAN vol. 096, no. 008 30 August 1996 (1996-08-30) * |
Also Published As
Publication number | Publication date |
---|---|
US6435449B1 (en) | 2002-08-20 |
KR20010031861A (ko) | 2001-04-16 |
CN1148272C (zh) | 2004-05-05 |
ATA911898A (de) | 2001-11-15 |
AT409228B (de) | 2002-06-25 |
KR100545491B1 (ko) | 2006-01-24 |
DE19881709B4 (de) | 2008-05-29 |
CN1275934A (zh) | 2000-12-06 |
DE19881709D2 (de) | 2000-10-12 |
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