EP0850701A1 - Procédé et installation de production de barres avec une structure affinée et/ou compressée par forgeage au laminoir - Google Patents

Procédé et installation de production de barres avec une structure affinée et/ou compressée par forgeage au laminoir Download PDF

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Publication number
EP0850701A1
EP0850701A1 EP97122109A EP97122109A EP0850701A1 EP 0850701 A1 EP0850701 A1 EP 0850701A1 EP 97122109 A EP97122109 A EP 97122109A EP 97122109 A EP97122109 A EP 97122109A EP 0850701 A1 EP0850701 A1 EP 0850701A1
Authority
EP
European Patent Office
Prior art keywords
rolling
stand
forging
roll stand
roll
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
EP97122109A
Other languages
German (de)
English (en)
Other versions
EP0850701B1 (fr
Inventor
Hubert Müller
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.)
SMS Siemag AG
Original Assignee
SMS Schloemann Siemag AG
Schloemann Siemag AG
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 SMS Schloemann Siemag AG, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Publication of EP0850701A1 publication Critical patent/EP0850701A1/fr
Application granted granted Critical
Publication of EP0850701B1 publication Critical patent/EP0850701B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B21B1/46—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 metal immediately subsequent to continuous casting
    • B21B1/466—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 metal immediately subsequent to continuous casting in a non-continuous process, i.e. the cast being cut before rolling
    • 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
    • B21B1/02—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 heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
    • B21B1/026—Rolling
    • 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
    • B21B1/02—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 heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
    • B21B1/04—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 heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing in a continuous process
    • 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
    • B21B13/22—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories for rolling metal immediately subsequent to continuous casting, i.e. in-line rolling of steel
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49988—Metal casting
    • Y10T29/49991—Combined with rolling

Definitions

  • the invention relates to a method for producing bar steel with a refined and / or compacted structure.
  • the invention relates also a rolling mill system to carry out the process.
  • the invention is based, a method and a task Specify plant with which the production of a core-compressed Product with significantly higher productivity compared to forging and consequently greatly reduced costs overall the benefits of rolling in quality improvement of Steel through forging to an overall economic and technical success unite.
  • the problem is solved with a manufacturing method of steel bars with a refined and / or compacted structure, that as the starting material, continuous cast products of forgeable Steel quality with an almost square cross-section and beveled Corner areas are used and this in forging heat above the transition temperature through continuous, swirl-free Forming alternately in at least one two-roll stand and / or at least one four-roll stand in comparison low elongation a multi-stage forming process with comparative very high rolling forces to a core compacted Roll product to be subjected.
  • An embodiment of the method according to the invention provides that forming (forging rolling) by rolling down corner areas the billet in at least one four-roll stand with such high rolling force that the resulting and, for example, in the micrograph recognizable compression-compressive stresses effective into the core zone are.
  • an embodiment of the method provides that the billet after solidification of the cast strand, temperature compensation and heating pre-calibrated to an intended forging roll temperature while doing so the flanks of the billets are deformed concavely.
  • the hereby resulting cross-sectional shape of the billet guarantees that that the compression pressures create compressive stresses right into the core and a relatively even structure across the entire cross-section produce.
  • An advantageous embodiment of the invention provides that the Pre-calibrated billets preferably in a combination of a horizontal roll stand and vertical mill stand smoothed and immediate then inserted into and into the four-roll stands be deformed by forging rolls.
  • the invention also makes it possible to achieve what is to be achieved Degree of microstructure deformation of the rolling stock immediately following stitches in a sequence of Two-roll stands and four-roll stands are made.
  • the Determining whether a wire with sufficient microstructure compaction up to The core zone has been reached through a number of attempts on rolled specimens, especially after they have cooled Determine micrographs and with the experience gained reproduce safely.
  • Embodiment of the invention may be advantageous, according to the An increase in the rolling temperature on the inlet side of a stand Temperature preferably by induction heating.
  • At least one four-roll stand can be used for forging rolls can be used with four driven rollers. With appropriate however, requirements for other rolling parameters can also suffice that for forging rolling at least one four-roll stand with two driven rollers is used, for example. With two driven Horizontal rollers and two non-driven vertical rollers.
  • the billets, at least on the first stitch, for rolling down the corner areas in a two-roll stand or in one Four-roll stand can be brought into a diagonal position below 45 °.
  • the advantage here is that a maximum amount of deformation work realized with a relatively small elongation of the rolled product becomes.
  • This advantage can be further enhanced be used so that the sticks are turned 45 ° for each subsequent stitch will.
  • the smoothing stitch in the two-roll horizontal stand or in the two-roll vertical stand is about 10%, whereas that Forging rolls in the four-roll stand with a pass reduction of 30 - 60% is done.
  • the method according to the invention sees with great advantage before that continuous casting billets in the roughing train of a rolling mill to steel bars with and / or refined by forging rolls processed compacted structure and that the hot rolled bar steel immediately afterwards in an intermediate or finishing line of the Rolling mill system for a calibrated or profiled end product is finished rolling.
  • Figure 1 shows the cross section of a as a starting material for manufacturing of steel bars with and refined by forging rolls compacted structure of continuously cast billet 20. It has one approximately square cross section with the vertical plane y-y and the horizontal plane x-x. At an angle of 45 ° between them Layers shows the cross-sectional shape of strongly sloping corner areas and initially even flanks 22.
  • a temperature compensation for example, in a conventional manner Equalization furnace (not shown) and the strand with a pair of scissors 11 cut into individual billets.
  • the Sticks pre-calibrated, smoothed and their flanks 22 accordingly the representation in Fig.
  • FIG. 2 the Stick 20 rotated by 45 ° and, for example, in a first stitch another sequence of steps between a pair of horizontal rollers 4 Rolling down the corner regions 21 in a first compression step subjected.
  • the resulting compression zones in the structure are indicated by the reference number 30 in FIG.
  • This illustration also clearly shows the concave shape 23 of the prepared for the billet cross sections.
  • Figure 2 shows the preparation of the next forming stitch in a universal scaffold 5, 7 of FIG Vertical rolls 14.
  • FIG. 3 shows an example of a family tree Carrying out the process suitable rolling mill system.
  • she owns an upstream system unit 1 in the form of a continuous casting system for the production of continuous cast and for forging rolling thermally prepared billet 20 made from the endless cast strand 10 can be cut to length with scissors 11.
  • the facility also shows in a preparatory part a roughing stand 2 for pre-calibration and then for smoothing a duo-horizontal frame 3 with subordinate Vertical smoothing scaffold 4.
  • Essential elements for that Forging rolls are the following two universal stands 5 and 7 preferably with smooth cylindrical rollers, between which there are a device 6 for preferably inductively heating the billets 20 is located. This can be followed by a duo frame 8 for smoothing be.
  • FIG. 3 further shows, there is one in the system of the Vorstrasse 15 Finishing line 9, not specifically identified, with, for example, five finishing stands subordinate.
  • the core is compacted into these by forging rolls Steel bars introduced hot and rolled in a heat.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Forging (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Heat Treatment Of Steel (AREA)
EP97122109A 1996-12-23 1997-12-16 Procédé et installation de production de barres avec une structure affinée et/ou compressée par forgeage au laminoir Expired - Lifetime EP0850701B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19654063 1996-12-23
DE19654063A DE19654063A1 (de) 1996-12-23 1996-12-23 Verfahren und Anlage zur Herstellung von Stabstahl mit durch Schmiedewalzen verfeinertem und/oder verdichtetem Gefüge

Publications (2)

Publication Number Publication Date
EP0850701A1 true EP0850701A1 (fr) 1998-07-01
EP0850701B1 EP0850701B1 (fr) 2001-11-28

Family

ID=7816045

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97122109A Expired - Lifetime EP0850701B1 (fr) 1996-12-23 1997-12-16 Procédé et installation de production de barres avec une structure affinée et/ou compressée par forgeage au laminoir

Country Status (5)

Country Link
US (1) US5983481A (fr)
EP (1) EP0850701B1 (fr)
JP (1) JPH10211501A (fr)
AT (1) ATE209536T1 (fr)
DE (2) DE19654063A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1400913B1 (it) * 2010-06-24 2013-07-02 Danieli Off Mecc Procedimento e impianto di colata e laminazione per realizzare prodotti laminati metallici lunghi
WO2016027208A1 (fr) 2014-08-18 2016-02-25 Bharat Forge Limited Procédé de forgeage de pièces complexes à partir de billettes de coulée continue
KR102348556B1 (ko) 2018-11-27 2022-01-06 주식회사 포스코 롤 포징 장치
IT202000020434A1 (it) * 2020-08-26 2022-02-26 Danieli Off Mecc Processo e apparato per produrre prodotti siderurgici, in particolare di tipo merchant, in particolare in modalita’ endless
CN113231463A (zh) * 2021-06-24 2021-08-10 西安盛日机电科技有限公司 无孔型技术轧制高速棒材的工艺方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2066314A (en) * 1935-02-21 1937-01-05 Bartscherer Franz Process of improving the structure of steel products
JPS5581004A (en) * 1978-12-12 1980-06-18 Nippon Steel Corp Forming roll
EP0342403A2 (fr) * 1988-05-18 1989-11-23 Sms Schloemann-Siemag Aktiengesellschaft Calibrage pour les cylindres des cages de laminoir avec trois ou plusieurs des cylindres
SU1623805A1 (ru) * 1989-03-15 1991-01-30 Производственное объединение "Уралмаш" Способ прокатки заготовок
JPH04327301A (ja) * 1991-04-30 1992-11-16 Nkk Corp ビレットの圧延方法
JPH05337510A (ja) * 1992-06-10 1993-12-21 Daido Steel Co Ltd 圧延方法
JPH08174001A (ja) * 1994-12-24 1996-07-09 Sumitomo Heavy Ind Ltd インライン型鋼材生産設備

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2014878B2 (de) * 1970-04-01 1975-04-10 Wsesojusnij Nautschno-Issledowatelskij I Projektno-Konstruktorskij Institut Metallurgitscheskowo Maschinostrojenija Moskau Verfahren zum Walzen von gegossenem Metallgut mit gerader Zahl von Begrenzungsflächen

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2066314A (en) * 1935-02-21 1937-01-05 Bartscherer Franz Process of improving the structure of steel products
JPS5581004A (en) * 1978-12-12 1980-06-18 Nippon Steel Corp Forming roll
EP0342403A2 (fr) * 1988-05-18 1989-11-23 Sms Schloemann-Siemag Aktiengesellschaft Calibrage pour les cylindres des cages de laminoir avec trois ou plusieurs des cylindres
SU1623805A1 (ru) * 1989-03-15 1991-01-30 Производственное объединение "Уралмаш" Способ прокатки заготовок
JPH04327301A (ja) * 1991-04-30 1992-11-16 Nkk Corp ビレットの圧延方法
JPH05337510A (ja) * 1992-06-10 1993-12-21 Daido Steel Co Ltd 圧延方法
JPH08174001A (ja) * 1994-12-24 1996-07-09 Sumitomo Heavy Ind Ltd インライン型鋼材生産設備

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 9201, Derwent World Patents Index; Class M21, AN 92-005268, XP002057900 *
PATENT ABSTRACTS OF JAPAN vol. 004, no. 123 (M - 029) 30 August 1980 (1980-08-30) *
PATENT ABSTRACTS OF JAPAN vol. 017, no. 164 (M - 1390) 30 March 1993 (1993-03-30) *
PATENT ABSTRACTS OF JAPAN vol. 018, no. 168 (M - 1580) 22 March 1994 (1994-03-22) *
PATENT ABSTRACTS OF JAPAN vol. 096, no. 011 29 November 1996 (1996-11-29) *

Also Published As

Publication number Publication date
US5983481A (en) 1999-11-16
JPH10211501A (ja) 1998-08-11
DE59705539D1 (de) 2002-01-10
DE19654063A1 (de) 1998-06-25
EP0850701B1 (fr) 2001-11-28
ATE209536T1 (de) 2001-12-15

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