EP2506991B1 - Compact reversible universal mill for producing medium-large sections - Google Patents

Compact reversible universal mill for producing medium-large sections Download PDF

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Publication number
EP2506991B1
EP2506991B1 EP10778938.0A EP10778938A EP2506991B1 EP 2506991 B1 EP2506991 B1 EP 2506991B1 EP 10778938 A EP10778938 A EP 10778938A EP 2506991 B1 EP2506991 B1 EP 2506991B1
Authority
EP
European Patent Office
Prior art keywords
stand
universal
reversible
mill
roller way
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.)
Revoked
Application number
EP10778938.0A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2506991A2 (en
Inventor
Andrea Delli Zotti
Marco Lange
Domenico Vergara
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.)
Pomini Long Rolling Mills SRL
Original Assignee
Siemens SpA
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
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Application filed by Siemens SpA filed Critical Siemens SpA
Priority to PL10778938T priority Critical patent/PL2506991T3/pl
Publication of EP2506991A2 publication Critical patent/EP2506991A2/en
Application granted granted Critical
Publication of EP2506991B1 publication Critical patent/EP2506991B1/en
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B21B1/08—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 structural sections, i.e. work of special cross-section, e.g. angle steel
    • B21B1/14—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 structural sections, i.e. work of special cross-section, e.g. angle steel in a non-continuous process, i.e. at least one reversing stand
    • 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
    • B21B1/08—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 structural sections, i.e. work of special cross-section, e.g. angle steel
    • B21B1/082—Piling sections having lateral edges specially adapted for interlocking with each other in order to build a wall
    • 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
    • B21B1/08—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 structural sections, i.e. work of special cross-section, e.g. angle steel
    • B21B1/088—H- or I-sections
    • 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
    • B21B1/08—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 structural sections, i.e. work of special cross-section, e.g. angle steel
    • B21B1/09—L-sections
    • 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
    • B21B1/08—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 structural sections, i.e. work of special cross-section, e.g. angle steel
    • B21B1/095—U-or channel sections
    • 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
    • B21B13/001—Convertible or tiltable stands, e.g. from duo to universal stands, from horizontal to vertical stands
    • 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
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • 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
    • B21B2013/003—Inactive rolling stands
    • 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
    • B21B13/08—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process
    • B21B13/10—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process all axes being arranged in one plane
    • B21B2013/106—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process all axes being arranged in one plane for sections, e.g. beams, rails

Definitions

  • This invention relates to a compact reversible universal mill for producing medium-large sections.
  • reversible mill in the third solution provides various advantages over the continuous mill in the first two, but the main factor is essentially the lower initial investment cost. Indeed, reversible rolling mills reduce the number of machines required for rolling, enable smaller hangars and related structural work to be used, provide process and productivity advantages, etc.
  • Patent EP 256 409 B1 from SMS describes a process for producing such sections using a reversible mill known as "X-H”.
  • the X-H process solution adopted by SMS to produce sections provides for one or more reversible breakdown stands and an intermediate reversible-finishing mill (tandem) comprising a universal reducing stand, a two-high stand and a universal stand that fulfills the dual functions of reducing and finishing.
  • tandem intermediate reversible-finishing mill
  • This solution provides for the use of one or more breakdown stands, an intermediate reversible mill comprising U - H - U (like the competition) and a continuous finishing mill comprising a horizontal stand (optional - providing the function of an edger) and a universal stand.
  • An additional stand is provided away from the intermediate reversible mill and therefore linked by roller way and located as a finishing stand near to the cooling bed.
  • finishing stand the roller way and all of the structural work and hangars related to the longer plant increase the overall investment by the client.
  • the general purpose of this invention is to resolve the aforementioned drawbacks in the prior art in an extremely simple, economical and particularly functional manner.
  • Another purpose is to provide a reversible mill that is more compact than those currently available.
  • Another purpose is to provide a reversible mill that minimizes plant costs related to the structural work and hangars required.
  • this invention describes a compact reversible universal mill for producing medium-large sections, having the characteristics set out in the attached claims.
  • the reversible universal mill 10 provides for the placement of a finishing universal stand 11 as the final additional stand in a reversible intermediate unit 12 across a roller way 13 carrying a bar 17 being worked.
  • the reversible intermediate unit 12 includes a first universal reducing stand 14, a two-high stand 15 and a second reducing universal stand 16.
  • this additional stand 11 does not change as it is used always and exclusively for finishing. Therefore the stand 11 is always open during intermediate passes and is only closed before the bar completes the last pass in the production cycle.
  • the stand 11 therefore moves perpendicularly to the direction of movement of the bars 17 gradually worked by the stand 11 itself.
  • This movement is for example effected by an appropriate actuating unit, shown in 18, possibly connecting to and disconnecting from the actuators belonging to the stand 11.
  • This arrangement consists of an X - X - H solution using a reversible mill comprising four full stands substantially limiting the distance between the finishing stand 11 and the reversible intermediate unit 12.
  • this finishing stand 11 is no longer placed away from the reversible intermediate unit 12, as described in the prior art, but is placed immediately after the last universal stand of the same reversible unit 12.
  • the option of offering clients ever-more compact plants, such as those according to this invention enables involvement in contracts where the installation area is not critical, as well as involvement in contracts where the actual layout is critical to mill installation.
  • the service life of the rolls of the universal finishing stand according to this invention is around 2000 [t] for smaller sections and around 3000 [t] for larger ones.
  • the advantages of the XXH solution compared to the existing solution are the smaller total footprint of the plant and the option of producing two plate bars per bloom produced optimizing furnace loads.
  • the arrangement proposed makes the plant more compact or in any case significantly optimizes the process.
  • the solution proposed generates a single-change system for the stands of the reversible mill and therefore a more compact rollshop section, a reduced and optimized use of overhead cranes, more rational use of spare parts and therefore better warehouse management. This naturally results in fewer maintenance staff and shorter mill change times (the 4 nearby stands enable just one operator to be present).
  • the "I Shape” solution shown in Figure 2 results in a more compact layout and enables the roller ways, lubricant, hydraulic, air, water and grease pipes to be shorter, reducing the impact on the operation and maintenance part.
  • a furnace unit 21 with related accessories (such as descaler 23) is placed upstream before a roughing unit 24.
  • a furnace unit 21 with related accessories such as descaler 23
  • a roughing unit 24 is placed upstream before a roughing unit 24.
  • the mill 10 according to the invention is followed by the mill 10 according to the invention before a cooling bed 27, cutting stations 29 and final stations.
  • the "U shape" solution shown in Figure 3 with bed 27 further away results in any case, once the final stand is moved, in a more compact layout.
  • the compact solution may enable use of the space after the finishing stand to be optimized and the distance between it and the cooling bed to be lengthened at a lower cost making it possible to roll a longer finished product from a starting section that is heavier and to cut it into multiples of the length of the bed before the bed using the saw. This naturally improves productivity and yield and plant productivity at a lower investment cost.
  • Figure 4 shows a third embodiment of a plant that incorporates the mill according to this invention and that combines characteristics of the "I shape” plant with those of the "U shape” plant shown before, mixing and adapting them.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Crushing And Grinding (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
EP10778938.0A 2009-12-01 2010-11-02 Compact reversible universal mill for producing medium-large sections Revoked EP2506991B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10778938T PL2506991T3 (pl) 2009-12-01 2010-11-02 Zwarta nawrotna walcarka uniwersalna do wytwarzania średnich i dużych kształtowników

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI2009A002113A IT1397191B1 (it) 2009-12-01 2009-12-01 Treno universale reversibile compatto per la produzione di profili medio grandi.
PCT/EP2010/066606 WO2011067055A2 (en) 2009-12-01 2010-11-02 Compact reversible universal mill for producing medium-large sections

Publications (2)

Publication Number Publication Date
EP2506991A2 EP2506991A2 (en) 2012-10-10
EP2506991B1 true EP2506991B1 (en) 2015-01-14

Family

ID=42320986

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10778938.0A Revoked EP2506991B1 (en) 2009-12-01 2010-11-02 Compact reversible universal mill for producing medium-large sections

Country Status (12)

Country Link
US (1) US20120279269A1 (it)
EP (1) EP2506991B1 (it)
KR (1) KR101520528B1 (it)
CN (1) CN102648059B (it)
BR (1) BR112012013133A2 (it)
ES (1) ES2529711T3 (it)
IN (1) IN2012DN03304A (it)
IT (1) IT1397191B1 (it)
PL (1) PL2506991T3 (it)
RU (1) RU2550456C2 (it)
UA (1) UA107203C2 (it)
WO (1) WO2011067055A2 (it)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110814024A (zh) * 2019-11-13 2020-02-21 天津市中重科技工程有限公司 中大型h型钢多机架高节奏可逆轧制工艺

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115647045B (zh) * 2022-10-25 2023-06-27 广州Jfe钢板有限公司 一种利用酸连轧机组生产酸洗板的方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU428795A1 (ru) * 1972-06-26 1974-05-25 И. С. Шмуклер , А. М. Миславский Стан для непрерывно-реверсивной прокатки
JPS5288565A (en) * 1976-01-21 1977-07-25 Nippon Steel Corp Method of rolling shape steel
AT372881B (de) * 1982-03-05 1983-11-25 Voest Alpine Ag Anlage zum warmwalzen von band- oder tafelfoermigem walzgut
AT380188B (de) * 1982-03-05 1986-04-25 Voest Alpine Ag Anlage zum warmwalzen von band- oder tafelfoermigem walzgut
US4503697A (en) * 1983-01-25 1985-03-12 Tippins Machinery Company, Inc. Method for hot rolling slabs
DE3627729C2 (de) * 1986-08-16 1996-03-07 Schloemann Siemag Ag Formstahl-Walzwerk
ES2028137T5 (es) * 1987-01-23 1997-05-16 Schloemann Siemag Ag Dispositivo de ajuste para una caja de laminacion universal.
IT1259487B (it) * 1992-08-26 1996-03-20 Danieli Off Mecc Procedimento per la produzione di lamiere sottili ed impianto di laminazione compatto adottante tale procedimento
DE4415762A1 (de) * 1994-04-29 1995-11-02 Mannesmann Ag Verfahren und Vorrichtung zum Walzen von Trägern aus Vorprofilen
DE19512931A1 (de) * 1995-03-30 1996-10-02 Mannesmann Ag Universalgerüstgruppe und Verfahren zum Walzen von stranggegossenen Vorprofilen
DE19649295A1 (de) * 1996-11-28 1998-06-04 Schloemann Siemag Ag Warmwalzanlage
CN1298501C (zh) * 2001-05-30 2007-02-07 新日本制铁株式会社 钢轨的制造方法及其制造设备
ITMI20021594A1 (it) * 2002-07-19 2004-01-19 Danieli Off Mecc Metodo e impianto per la laminazione a caldo di rotaie

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110814024A (zh) * 2019-11-13 2020-02-21 天津市中重科技工程有限公司 中大型h型钢多机架高节奏可逆轧制工艺

Also Published As

Publication number Publication date
KR20120104562A (ko) 2012-09-21
UA107203C2 (uk) 2014-12-10
KR101520528B1 (ko) 2015-05-14
ITMI20092113A1 (it) 2011-06-02
PL2506991T3 (pl) 2015-05-29
IN2012DN03304A (it) 2015-10-23
ES2529711T3 (es) 2015-02-24
CN102648059A (zh) 2012-08-22
EP2506991A2 (en) 2012-10-10
WO2011067055A3 (en) 2011-12-01
WO2011067055A2 (en) 2011-06-09
RU2550456C2 (ru) 2015-05-10
IT1397191B1 (it) 2013-01-04
BR112012013133A2 (pt) 2016-08-16
RU2012127312A (ru) 2014-01-20
US20120279269A1 (en) 2012-11-08
CN102648059B (zh) 2015-04-15

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