EP0262899A2 - Schere für Stranggussstangen - Google Patents

Schere für Stranggussstangen Download PDF

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Publication number
EP0262899A2
EP0262899A2 EP87308564A EP87308564A EP0262899A2 EP 0262899 A2 EP0262899 A2 EP 0262899A2 EP 87308564 A EP87308564 A EP 87308564A EP 87308564 A EP87308564 A EP 87308564A EP 0262899 A2 EP0262899 A2 EP 0262899A2
Authority
EP
European Patent Office
Prior art keywords
billet
casting
shearing
shear
blades
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.)
Withdrawn
Application number
EP87308564A
Other languages
English (en)
French (fr)
Other versions
EP0262899A3 (de
Inventor
Max Ahrens
Manfred Haissig
Kozma Ahacic
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.)
Steel Casting Engineering Ltd
Original Assignee
Steel Casting Engineering Ltd
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 Steel Casting Engineering Ltd filed Critical Steel Casting Engineering Ltd
Publication of EP0262899A2 publication Critical patent/EP0262899A2/de
Publication of EP0262899A3 publication Critical patent/EP0262899A3/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/126—Accessories for subsequent treating or working cast stock in situ for cutting

Definitions

  • This invention relates generally to continuous casting systems in which a single elongated casting is formed and particularly to horizontal continuous casting systems in which the elongated casting is periodically sheared into predetermined lengths during the continuous casting process.
  • the continuous casting system provides a system of casting fabrication in which a supply of molten metal or molten alloy is heated and liquified within a furance-like structure called a tundish or heated outside the tundish and placed therein prior to casting.
  • the furnace includes a discharge orifice near the bottom of its internal cavity which is coupled by a throat to a cooled die or mold.
  • the latter defines an elongated die passage suitable for the formation of an elongated casting which in turn defines an entrance opening and exit opening.
  • cooling means are provided which generally circle or surround the die passage for the purpose of conducting sufficient heat from the molten metal within the die passage to solidify all or part of the molten metal therein to form a casting.
  • drive means are provided down stream of the mold and casting coolers which are operated upon the casting to periodically withdraw a portion of the casting from the die passage. This withdrawn portion is typically referred to as "casting stroke".
  • the speed at which the casting is withdrawn from the cooled die is selected in accordance with the cooling capacity of the die and the characteristics of the casting. Because of the heat within the casting, the center of the casting remains molten or partially molten for a substantial length down the casting. At some point however, the entire casting becomes soldified and is moved by the casting drive mechanism along a succession of rollers generally referred to as the casting bed.
  • continuous casting systems generally provide a device as a billet shear which is operative upon the casting to periodically shear the casting into predetermined lengths thereby facilitating transportation and storage of the cast billet.
  • the most commonly used billet shear comprises a pair of substantially flat hardened plates which are positioned one above and one below the casting at a selected point along the casting bed. Hydraulic means are operative upon the cutting plates to drive the cutting plates toward each other and into the casting. In most systems, the cutting plates are offset from each other and move in substantial alignment such that the billet cutting action occurs by virture of the inwardly facing corners of the cutting plates being driven through the casting.
  • a horizontal continuous casting billet shear having a pair of cutting blades and means situating the blades on opposite sides of a to-be-sheared casting billet.
  • the blades each define an acute angled cutting edge having facets extending therefrom for a predetermined distance together with a pair of inclined camming surfaces joined to the cutting surfaces which function to provide cutting clearance for the shearing operation.
  • Channel means are provided within the shearing blade supports for guiding the shearing blades and hydraulic means are operative upon the cutting blades to provide a shearing force.
  • Figure 1 sets forth a perspective view of the shearing blades and hydraulic cylinder of the present invention billet shear together with a dashed line representation of the support mechanism. It should be understood that Figure 1 is a simplified pictorial view for use in obtaining a clear understanding of the basic operation of the present invention shear. It will be apparent to those skilled in the art, from examination of the remaining figures, that many structural details of the present invention billet shear have been omitted from Figure 1 for purposes of illustration.
  • a pair of shearing blades 11 and 12 are positioned above and below a casting billet 13. Blade 11 defines a cutting edge 14 extending downwardly from the remainder of blade 11 while blade 12 defines an upwardly extending cutting edge 15.
  • shearing blades 11 and 12 are substantially identical and are mirror images of each other in their orientation with respect to the vertical plane of blade motion described below in greater detail.
  • An upper blade support 20 is attached to shearing blade 11 and defines a dove-tail union 17 which secures shearing blade 11 to blade support 20.
  • An upper hydraulic cylinder 24 is positioned overlying blade support 20 and defines a conventional expansion-type hydraulic cylinder.
  • Upper cylinder 24 further includes a piston 30 which couples hydraulic cylinder 24 to blade support 20.
  • cylinder 24 includes the conventional means utilized in coverting a source of pressurized hydraulic fluid to an expandable cylinder.
  • hydraulic cylinder 25 includes conventional hydraulically operable means for coverting a source of pressurized hydraulic fluid to an expandable hydraulic press function.
  • Casting 13 which comprises the to-be-sheared horizontally continuously cast billet, extends between shearing blades 11 and 12.
  • hydraulic means pump hydraulic fluid into hydraulic cylinders 24 and 25 by means shown below in greater detail, causing shearing blade 11 to be driven downwardly against casting 13 and shearing blade 12 to be driven upwardly against the under side of casting 13.
  • FIG. 6a shows the configuration of shearing blades 11 and 12 as the initial shearing action takes place and as shearing blades 11 and 12 are driven into casting or billet 13.
  • Shearing blade 11 defines a cutting edge 14 and a inclined facet 33 extending upwardly therefrom at an acute angle.
  • An additional facet 34 extends upwardly from facet 33 at a more inclined angle and as set forth below, provides a camming surface which aids the shearing action of the present invention billet shear.
  • a vertical facet 35 extends upwardly from cutting edge 14 while an inclined facet 36 extends upwardly from facet 35 and forms a second camming surface for shearing blade 11.
  • shearing blade 12 defines an inclined surface 40 extending from cutting edge 15 and a camming facet 41 extending from facet 40. The latter defines a camming surface similar to surface 34 of shearing blade 11. Shearing blade 12 further defines a vertical facet 42 extending downwardly from cutting edge 15 and a camming facet 43 which extends downwardly from vertical facet 42. As can be seen by examination of Figure 6a and as mentioned above, shearing blades 11 and 12 are substantially identical in structure and are oppositely oriented with respect to each other.
  • shearing blades 11 and 12 are positioned in a common vertical plane substantially orthoginal to billet 13 and aligned such that cutting edges 14 and 15 are positioned in parallel and generally aligned with each other in a common vertical plane. Furthermore, it should be noted that facets 35 and 42 are positioned in a common vertical plane corresponding to the plane of motion of shearing blades 11 and 12.
  • Figure 6b sets forth a illustration of the positions of shearing blades 11 and 12 as they appear at the conclusion of the shearing stroke of hydraulic cylinders 24 and 25. It should be noted that billet 13 is completely sheared at this point and defines a plurality of inclined surfaces 44, 45, 46 and 47. It should be further noted that surfaces 25 and 42 of shearing blades 11 and 12 respectively are in substantial contact and further that cutting edges 14 and 15 overlap each other insuring that billet 13 is completely severed by the shearing action. Inclined surfaces 44 through 47 are produced in billet 13 by the incline of surfaces 34 and 36 of blade 11 and surfaces 41 and 43 of blade 12.
  • incline surfaces 34, 36, 41 and 43 of shearing blades 11 and 12 provide a camming action against billet 13 during the cutting process which in turn insures proper clearance of the material of billet 13 during the shearing process and facilitates the shearing operation of blades 11 and 12.
  • the cutting edge 14 and 15 are more easily driven into casting 13 than the conventional square faced cutting plates utilized in prior art shears.
  • Figure 2 sets forth a side view of the present invention billet shear supported upon a casting bed 60 which, in accordance with coventional fabrication techniques, extends horizontally substantially in parallel with the path traveled by casting 13.
  • Casting bed 60 further defines a rail 61 and a rail 59 (better seen in Figure 3).
  • Billet shear 10 comprises a pair of oppositely positioned frame members 22 and 23 together with a channel frame 28 coupled therebetween.
  • Channel frame 28 and upper frame 22 and lower frame 23 form a compact rigid structure which encircles casting bed 60 and rails 61 and 59 as well as casting 13.
  • upper frame 22 supports a hydraulic cylinder 24 constructed in accordance with presently known conventional hydraulic cylinder techniques.
  • a quartet of fasteners 50, 51, 52, and 53 are secured to frame 22 and extend upwardly therefrom and from an attachment to upper housing 26.
  • Upper housing 26, fasteners 50 through 53 and upper frame 22 cooperate to captivate hydraulic cylinder 24 and secure it to channel frame 28.
  • lower frame 23 defines a quartet of fasteners 55 through 58 which extend downwardly therefrom and which are secured to lower housing 27.
  • hydraulic cylinder 25 is captivated between lower frame 23 and lower housing 27 by fasteners 55 through 58.
  • channel frame 28 defines a channel 70 therein which receives the end portions of shearing blades 11 and 12 and which provides a channel guide for the motion thereof in the vertical plane.
  • a second blade channel 72 (better seen in Figure 4) which corresponds in position and structure to channel 70, receives the other end of shearing blades 11 and 12.
  • Channels 70 and 72 cooperate to restrict shearing blades 11 and 12 to vertical motion in a single plane under the forces imparted by hydraulic cylinders 24 and 25.
  • channels 70 and 72 insure that shearing blades 11 and 12 operate in a common vertical plane and provide the relative motions depicted in Figures 6a and 6b described above during the present invention shearing process.
  • Billet shear 10 further includes a wheel support 63 on one side of channel frame 28 and a wheel support 73 (better seen in Figure 3) on the other side of channel frame 28.
  • a pair of conventional axels 68 and 69 extend outwardly from channel frame 28 on one side and pass through wheel support 63 while a similar set of axels 71 and 74 extend outwardly from the other side of channel frame 28 and are secured to wheel support 73.
  • a quartet of rolling wheels 64 through 67 are supported up axels 68, 69, 71 and 74 and are aligned with and ride upon rails 61 and 59 of casting bed 60.
  • billet shear 10 is rollingly supported upon rails 61 and 59 and is moveable with respect thereto in accordance with an important aspect of the present invention.
  • FIG. 4 sets forth a section view of the present invention billet shear taken along section lines 4-4 in Figure 3.
  • hydraulic cylinders 24 and 25 are supported respectively above and below casting 13.
  • Hydraulic cylinder 24 defines a piston 30 which is coupled to a blade support 20 while hydraulic cylinder 25 includes a piston 31 coupled to blade support 21.
  • Blades 11 and 12 are shown positioned in their retracted position within channel 72.
  • Casting 13 extends through billet shear 10 and is supported therein by a pair of cooled guides 80 and 81 below and above casting 13 respectively.
  • Cooled guide 80 defines a transverse bearing surface 82 at the downstream side of billet shear 10 while cooled guide 81 defines a transverse bearing surface 83 at the upstream side of billet shear 10.
  • bearing surfaces 82 and 83 support casting 13 during the shearing operation and assist in compensating for the twisting forces imparted to billet 13 by the shearing operation.
  • Blade channel 70 comprises a pair of trapezoidal wedge blocks 90 and 91 secured to channel frame 28 by a pair of conventional fasteners 94 and 95 respectively.
  • channel 72 comprises a pair of trapezoidal cross-section blocks 92 and 93 secured to channel frame 28 by a pair of conventional fasteners 96 and 97 respectively.
  • wedge shaped blocks 90 through 93 are moveable with respect to channel frame 28 to provide adjustment of the channel thus formed which guides shearing blades 11 and 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shearing Machines (AREA)
  • Continuous Casting (AREA)
  • Metal Rolling (AREA)
  • Accessories And Tools For Shearing Machines (AREA)
EP87308564A 1986-09-29 1987-09-28 Schere für Stranggussstangen Withdrawn EP0262899A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US91370586A 1986-09-29 1986-09-29
US913705 1986-09-29

Publications (2)

Publication Number Publication Date
EP0262899A2 true EP0262899A2 (de) 1988-04-06
EP0262899A3 EP0262899A3 (de) 1989-07-26

Family

ID=25433508

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87308564A Withdrawn EP0262899A3 (de) 1986-09-29 1987-09-28 Schere für Stranggussstangen

Country Status (5)

Country Link
EP (1) EP0262899A3 (de)
JP (1) JPS63180409A (de)
CN (1) CN87106736A (de)
BR (1) BR8704939A (de)
CA (1) CA1279569C (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017219289A1 (de) * 2017-10-27 2019-05-02 Sms Group Gmbh Verfahren zum Trennen eines Gießstranges oder Zwischenbandes mittels einer Schere
CN115026345A (zh) * 2022-06-27 2022-09-09 张家港市发力机械有限公司 一种86度至98度剪刃

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100450669C (zh) * 2007-02-14 2009-01-14 南昌长力钢铁股份有限公司 连铸坯定重剪切装置
JP6001397B2 (ja) * 2012-09-25 2016-10-05 山田 榮子 鋼の連続鋳造における鋳片切断装置
CN103769678A (zh) * 2013-10-11 2014-05-07 福州台捷液压机械有限公司 连铸热坯在线同步对角剪断机
JP6533883B2 (ja) * 2015-10-28 2019-06-19 榮子 山田 鋼の連続鋳造鋳片の切断装置
JP6616207B2 (ja) * 2016-02-24 2019-12-04 榮子 山田 鋼の連続鋳造鋳片の切断装置
CN111069678B (zh) * 2019-11-28 2021-09-17 武汉大西洋连铸设备工程有限责任公司 连铸钢坯同步液压剪切方法
CN114147777A (zh) * 2021-11-25 2022-03-08 深圳市比挺科技有限公司 一种口罩鼻梁条压紧切割装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3565309A (en) * 1967-09-06 1971-02-23 Gulf & Western Ind Prod Co Method and apparatus for shearing rolled metal blanks
US3585830A (en) * 1968-09-06 1971-06-22 Reynolds Metals Co Method of and apparatus for shearing and rolling metal billets
FR2409108A1 (fr) * 1977-11-22 1979-06-15 Voest Alpine Montan Ag Machine a cisailler dans un train de rouleaux de sortie d'une installation de coulee continue
JPS57184564A (en) * 1981-05-09 1982-11-13 Kawasaki Heavy Ind Ltd Steel ingot cutter for continuous casting installation
EP0080998A1 (de) * 1981-11-27 1983-06-08 Manfred Dipl.-Ing. Haissig Vorrichtung zum horizontalen Stranggiessen von Metallen oder Legierungen
JPS59219114A (ja) * 1983-05-26 1984-12-10 Ube Ind Ltd 鋼片の切断方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3565309A (en) * 1967-09-06 1971-02-23 Gulf & Western Ind Prod Co Method and apparatus for shearing rolled metal blanks
US3585830A (en) * 1968-09-06 1971-06-22 Reynolds Metals Co Method of and apparatus for shearing and rolling metal billets
FR2409108A1 (fr) * 1977-11-22 1979-06-15 Voest Alpine Montan Ag Machine a cisailler dans un train de rouleaux de sortie d'une installation de coulee continue
JPS57184564A (en) * 1981-05-09 1982-11-13 Kawasaki Heavy Ind Ltd Steel ingot cutter for continuous casting installation
EP0080998A1 (de) * 1981-11-27 1983-06-08 Manfred Dipl.-Ing. Haissig Vorrichtung zum horizontalen Stranggiessen von Metallen oder Legierungen
JPS59219114A (ja) * 1983-05-26 1984-12-10 Ube Ind Ltd 鋼片の切断方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 7, no. 29 (M-191)[1174], 5th February 1983; & JP-A-57 184 564 (KAWASAKI JUKOGYO K.K.) 13-11-1982 *
PATENT ABSTRACTS OF JAPAN, vol. 9, no. 94 (M-374)[1817], 24th April 1985; & JP-A-59 219 114 (UBE KOSAN K.K.) 10-12-1984 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017219289A1 (de) * 2017-10-27 2019-05-02 Sms Group Gmbh Verfahren zum Trennen eines Gießstranges oder Zwischenbandes mittels einer Schere
US11529670B2 (en) 2017-10-27 2022-12-20 Sms Group Gmbh Method for cutting a cast strand or intermediate strip using shears
CN115026345A (zh) * 2022-06-27 2022-09-09 张家港市发力机械有限公司 一种86度至98度剪刃
CN115026345B (zh) * 2022-06-27 2023-11-21 张家港市发力机械有限公司 一种86度至98度剪刃

Also Published As

Publication number Publication date
JPS63180409A (ja) 1988-07-25
EP0262899A3 (de) 1989-07-26
BR8704939A (pt) 1988-05-17
CA1279569C (en) 1991-01-29
CN87106736A (zh) 1988-06-08

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