EP1789210A1 - Convex roll used for influencing the profile and flatness of a milled strip - Google Patents
Convex roll used for influencing the profile and flatness of a milled stripInfo
- Publication number
- EP1789210A1 EP1789210A1 EP05783941A EP05783941A EP1789210A1 EP 1789210 A1 EP1789210 A1 EP 1789210A1 EP 05783941 A EP05783941 A EP 05783941A EP 05783941 A EP05783941 A EP 05783941A EP 1789210 A1 EP1789210 A1 EP 1789210A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roll
- rolls
- rollers
- curved
- cylindrical
- 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
Links
- 238000005096 rolling process Methods 0.000 claims description 21
- 230000007704 transition Effects 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims 2
- 238000006073 displacement reaction Methods 0.000 description 10
- 238000009826 distribution Methods 0.000 description 5
- 238000013000 roll bending Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007620 mathematical function Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
- B21B13/142—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls by axially shifting the rolls, e.g. rolls with tapered ends or with a curved contour for continuously-variable crown CVC
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
-
- 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
- B21B27/02—Shape or construction of rolls
- B21B27/021—Rolls for sheets or strips
-
- 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
- B21B37/40—Control of flatness or profile during rolling of strip, sheets or plates using axial shifting of the rolls
Definitions
- Convex roller for influencing the profile and flatness of a rolled strip
- the invention relates to a rolling stand for producing a rolled strip, comprehensive work rolls, which are optionally supported on support rollers or intermediate rollers and support rollers, wherein the work rolls and / or the support rollers and / or the intermediate rollers are axially displaceable against each other.
- Rolling mills with displaceable pairs of rolls are known, wherein each roll of at least one of these pairs of rolls is provided with a curved contour running in the direction of a bale, which extend on both rolls over opposite sides over part of the rolling stock width. wherein the curved contour extends over the entire length of the bale of both rollers and has a shape in which the two bale compartments complement each other in a certain relative axial position.
- DE-C-36 24 241 describes a rolling mill in which the working rolls each have a curved contour tapering towards a roll end and widening towards the end of the bale, and in the axial direction in the opposite direction are arranged adjustable, that in each case the tapered end of a work roll or intermediate roll between a rolling stock edge and the end of the associated support roller, preferably aligned and held on one edge of the rolling stock.
- EP 0 249 801 B1 discloses a rolling mill for the production of rolled strip, in which the rolls are provided with a curved contour running essentially over the entire bale length.
- the contours of all rollers are designed in the initial state or unloaded state, that the axial course of the sum of the effective roll bale diameters in each relatively changed axial position of the rolls assumes a course deviating from a constant course and follows a mathematical function symmetrical to rolling.
- the curved contour of the rollers usually runs mathematically in the direction of a third-order polynomial.
- CVC Continuously Variable Crown
- the rolls provided with a convexly curved roll bale section are designed with such a large roll diameter that the bending forces have a substantially parabolic (x 2 ) effect on the roll gap profile.
- Rollers with conventional x 3 -CVC cuts also provide a predominantly parabolic effect, so that there is consequently hardly any actuator with which it is possible to compensate for planarity errors of a higher order.
- This also applies, in particular, to the so-called Z-high frameworks, which, due to the small work roll diameter, are designed without work roll bending for structural reasons. Due to the use according to the invention of For example, this disadvantage can be prevented by the use of a high-order grind roller or higher-order work rolls x 5 + x 6 + x 7 .
- the remaining rolls of the roll stand are formed with a continuous cylindrical roll barrel except the convex rolls.
- FIG. 2 shows the rolls of a four-high stand with work rolls designed according to the invention
- FIG. 3 shows adjustable roll gap profiles for a six-high rolling stand
- FIG. 5 shows a roll gap profile for the six-high rolling stand of FIG. 3 with work rolls designed according to the invention
- FIG. 6 shows a roll gap profile for the six-high rolling stand of FIG. 3 with classic CVC work rolls
- FIG. Fig. 7 shows the pressure distribution between the intermediate roll and the
- Fig. 8 shows the pressure distribution between the intermediate roll and the
- FIG. 1 shows a six-high stand for producing a rolled strip 1 with working rolls 10, 11, intermediate rolls 20, 21 and back-up rolls 30, 31.
- the work rolls 10, 11 and the support rollers 30, 31 are cylindrical over their entire Ballen ⁇ and not axially displaceable in the illustrated embodiment, while the intermediate rolls 20, 21 arranged according to the invention axially displaceable in the direction of arrow 22 and with a partially convexly curved roll barrel portion R (Fig. x) are formed.
- FIG. 2 shows the alternative application of the invention to work rolls 15, 16 designed according to the invention in a four-high stand for producing a rolled strip 1 with work rolls 15, 16 and back-up rolls 30, 31. While the cylindrical support rollers 30, 31 are also arranged here axially not displaceable ver ⁇ , the work rolls designed as convex rollers 15, 16 in the direction of arrow 12 can be moved axially. Compared with the embodiment of the work rolls 10, 11 of the six-high stand of FIG. 1, it can be clearly seen that the formation of the work rolls 15, 16 in the form of convex rolls leads to substantially thicker rolls.
- FIG. 3 shows in a coordinate system the possible adjustable nip profiles for a six-high rolling stand with small work rolls for two different intermediate rolls with convexly curved roll bale rolls. cut and a classic CVC intermediate roll for the entire Verschie ⁇ be Schl, but constant intermediate roll bending value, applied.
- the diagram contains in vertical pitch the quadratic influence of the nip, indicated by the symbols 25 for positive and 25 'for nega ⁇ tive changes.
- the non-quadratic changes are indicated in horizontal division by the symbols 26 for positive changes and 26 'for negative changes. To illustrate the achievable effect of the horizontal scale is compared to the vertical reproduced much larger.
- FIG. 4 shows in a coordinate system corresponding to FIG. 3 the possible roll gap profiles for the intermediate roll 20 according to the invention and for the classic CVC intermediate roll 20 ", which results if, in addition to the intermediate roll displacement, the intermediate roll deflection is also variable
- the control panel 23 for the intermediate roll 20 according to the invention and the Stell ⁇ field 24 for the CVC intermediate roll 20 ".
- the positioning field 24 of the CVC intermediate roller 20 " makes it clear that always a residual error x 4 occurs at the zero point of the coordinate system (rectangular profile).
- FIG. 5 shows, by way of example, an achievable roll gap profile 3 for the six-high stand of FIG.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
- Straightening Metal Sheet-Like Bodies (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
- Metal Rolling (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004044903 | 2004-09-14 | ||
PCT/EP2005/009717 WO2006029770A1 (en) | 2004-09-14 | 2005-09-09 | Convex roll used for influencing the profile and flatness of a milled strip |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1789210A1 true EP1789210A1 (en) | 2007-05-30 |
EP1789210B1 EP1789210B1 (en) | 2008-11-05 |
Family
ID=35219678
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05783941A Not-in-force EP1789210B1 (en) | 2004-09-14 | 2005-09-09 | Convex roll used for influencing the profile and flatness of a milled strip |
Country Status (15)
Country | Link |
---|---|
US (1) | US7757531B2 (en) |
EP (1) | EP1789210B1 (en) |
JP (1) | JP5368702B2 (en) |
KR (1) | KR101130607B1 (en) |
CN (2) | CN103084391A (en) |
AT (1) | ATE413237T1 (en) |
BR (1) | BRPI0509781A8 (en) |
CA (1) | CA2568829C (en) |
DE (1) | DE502005005906D1 (en) |
ES (1) | ES2314709T3 (en) |
RU (1) | RU2391154C2 (en) |
TW (1) | TWI344871B (en) |
UA (1) | UA86058C2 (en) |
WO (1) | WO2006029770A1 (en) |
ZA (1) | ZA200605636B (en) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008009902A1 (en) * | 2008-02-19 | 2009-08-27 | Sms Demag Ag | Rolling device, in particular push roll stand |
DE102009021414A1 (en) | 2008-12-17 | 2010-07-01 | Sms Siemag Aktiengesellschaft | Roll stand for rolling a particular metallic Guts |
CN101992215B (en) * | 2009-08-13 | 2012-07-04 | 宝山钢铁股份有限公司 | Axial movement control method for continuously variable crown (CVC) working roll |
JP5625749B2 (en) * | 2010-10-28 | 2014-11-19 | Jfeスチール株式会社 | Rolling mill and rolling method |
CN102632081B (en) * | 2012-04-06 | 2014-08-13 | 马钢(集团)控股有限公司 | Hot-rolling rough mill structure |
KR101490621B1 (en) * | 2013-09-30 | 2015-02-05 | 주식회사 포스코 | Apparatus for grinding roll |
CN103736735A (en) * | 2013-12-25 | 2014-04-23 | 烨辉(中国)科技材料有限公司 | Intermediate roller for cold-roll steel sheet |
CN104722585A (en) * | 2015-03-13 | 2015-06-24 | 李慧峰 | Strip rolling mill asymmetric strip shape compensation method |
CN106269901B (en) * | 2015-06-09 | 2018-03-09 | 宝山钢铁股份有限公司 | A kind of narrow side wave control method of six rollers CVC planishers |
CN107052052B (en) * | 2017-05-19 | 2019-04-02 | 北京科技大学 | Multi-model full duration board rolling Strip Shape Control working roll and design method |
CN108435797B (en) * | 2018-03-19 | 2020-02-07 | 包头钢铁(集团)有限责任公司 | Method for determining the surface profile of a roll and roll |
EP3685930B1 (en) * | 2019-01-28 | 2021-11-24 | Primetals Technologies Germany GmbH | Local varying of the roll gap in the area of the edges of a rolled strip |
CN113316491B (en) * | 2019-01-28 | 2023-08-11 | 首要金属科技德国有限责任公司 | Effective profile change of working surface of working roll during hot rolling of rolled piece into rolled strip in rolling stand |
CN112246874B (en) * | 2020-09-30 | 2022-10-14 | 安阳钢铁股份有限公司 | Method for reducing edge peeling of supporting roll of heavy and medium plate mill |
CN112808382B (en) * | 2021-01-04 | 2022-08-16 | 中冶长天国际工程有限责任公司 | Roll gap fine adjustment device, crusher and crusher roll gap control method |
CN112872049B (en) * | 2021-01-28 | 2023-02-21 | 邯郸钢铁集团有限责任公司 | Matching method for roll shape of special intermediate roll for cold-rolled ultrahigh-strength steel |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE6911574U (en) | 1969-03-21 | 1969-08-28 | Franz Vogel Fa | VACUUM SAFETY VALVE |
JPS61144202A (en) * | 1984-12-19 | 1986-07-01 | Kawasaki Steel Corp | Rolling method for controlling shape of sheet stock |
DE3624241C2 (en) | 1986-07-18 | 1996-07-11 | Schloemann Siemag Ag | Method for operating a rolling mill for producing a rolled strip |
DE3712043C2 (en) * | 1987-04-09 | 1995-04-13 | Schloemann Siemag Ag | Roll stand with axially displaceable rolls |
SU1713696A1 (en) | 1989-11-27 | 1992-02-23 | Институт черной металлургии | Roll unit of quarto strip rolling mill stand |
SU1713697A1 (en) | 1990-01-23 | 1992-02-23 | Производственное объединение "Новокраматорский машиностроительный завод" | Rolling stand |
JP2928581B2 (en) * | 1990-04-13 | 1999-08-03 | 株式会社日立製作所 | Four-high rolling mill and rolling method |
US5174144A (en) * | 1990-04-13 | 1992-12-29 | Hitachi, Ltd. | 4-high rolling mill |
KR100216299B1 (en) | 1991-05-16 | 1999-08-16 | 에모토 간지 | Six-stage rolling mill |
CN2149986Y (en) | 1991-12-04 | 1993-12-22 | 武汉钢铁公司 | Supporting roller |
JPH0810816A (en) | 1994-06-22 | 1996-01-16 | Nisshin Steel Co Ltd | Rolling method and rolling mill |
US6119500A (en) * | 1999-05-20 | 2000-09-19 | Danieli Corporation | Inverse symmetrical variable crown roll and associated method |
-
2005
- 2005-09-09 BR BRPI0509781A patent/BRPI0509781A8/en not_active Application Discontinuation
- 2005-09-09 DE DE502005005906T patent/DE502005005906D1/en active Active
- 2005-09-09 EP EP05783941A patent/EP1789210B1/en not_active Not-in-force
- 2005-09-09 KR KR1020067014961A patent/KR101130607B1/en active IP Right Grant
- 2005-09-09 ES ES05783941T patent/ES2314709T3/en active Active
- 2005-09-09 CN CN2013100511727A patent/CN103084391A/en active Pending
- 2005-09-09 UA UAA200610847A patent/UA86058C2/en unknown
- 2005-09-09 JP JP2007530656A patent/JP5368702B2/en not_active Expired - Fee Related
- 2005-09-09 US US11/596,935 patent/US7757531B2/en active Active
- 2005-09-09 CA CA2568829A patent/CA2568829C/en not_active Expired - Fee Related
- 2005-09-09 WO PCT/EP2005/009717 patent/WO2006029770A1/en active Application Filing
- 2005-09-09 RU RU2006132233/02A patent/RU2391154C2/en not_active IP Right Cessation
- 2005-09-09 CN CNA2005800308844A patent/CN101018623A/en active Pending
- 2005-09-09 AT AT05783941T patent/ATE413237T1/en active
- 2005-09-13 TW TW094131396A patent/TWI344871B/en not_active IP Right Cessation
-
2006
- 2006-07-07 ZA ZA200605636A patent/ZA200605636B/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2006029770A1 * |
Also Published As
Publication number | Publication date |
---|---|
UA86058C2 (en) | 2009-03-25 |
ES2314709T3 (en) | 2009-03-16 |
BRPI0509781A (en) | 2007-10-23 |
JP5368702B2 (en) | 2013-12-18 |
US20080000281A1 (en) | 2008-01-03 |
WO2006029770A1 (en) | 2006-03-23 |
BRPI0509781A8 (en) | 2016-05-03 |
CA2568829A1 (en) | 2006-03-23 |
TW200616724A (en) | 2006-06-01 |
JP2008513212A (en) | 2008-05-01 |
EP1789210B1 (en) | 2008-11-05 |
DE502005005906D1 (en) | 2008-12-18 |
RU2391154C2 (en) | 2010-06-10 |
RU2006132233A (en) | 2008-03-20 |
US7757531B2 (en) | 2010-07-20 |
CN101018623A (en) | 2007-08-15 |
KR20070051773A (en) | 2007-05-18 |
ZA200605636B (en) | 2007-09-26 |
CN103084391A (en) | 2013-05-08 |
CA2568829C (en) | 2012-03-27 |
TWI344871B (en) | 2011-07-11 |
KR101130607B1 (en) | 2012-04-24 |
ATE413237T1 (en) | 2008-11-15 |
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