EP0210944B1 - Verfahren zum horizontalen Stranggiessen von Metallen, insbesondere von Stahl - Google Patents

Verfahren zum horizontalen Stranggiessen von Metallen, insbesondere von Stahl Download PDF

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Publication number
EP0210944B1
EP0210944B1 EP86730077A EP86730077A EP0210944B1 EP 0210944 B1 EP0210944 B1 EP 0210944B1 EP 86730077 A EP86730077 A EP 86730077A EP 86730077 A EP86730077 A EP 86730077A EP 0210944 B1 EP0210944 B1 EP 0210944B1
Authority
EP
European Patent Office
Prior art keywords
continuous casting
horizontal continuous
billet
movement
strand
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.)
Expired - Lifetime
Application number
EP86730077A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0210944A2 (de
EP0210944A3 (en
Inventor
Achim Dipl.-Ing. Kubon
Peter Dr.-Ing. Voss-Spilker
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.)
Vodafone GmbH
Original Assignee
Mannesmann 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 Mannesmann AG filed Critical Mannesmann AG
Publication of EP0210944A2 publication Critical patent/EP0210944A2/de
Publication of EP0210944A3 publication Critical patent/EP0210944A3/de
Application granted granted Critical
Publication of EP0210944B1 publication Critical patent/EP0210944B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1284—Horizontal removing

Definitions

  • the invention relates to a method for the horizontal continuous casting of metals, in particular steel, in which the cast strand is gradually removed from an oscillating horizontal continuous casting mold.
  • Such a process is carried out with horizontal continuous casting molds, in which the molten metal solidifies in crust rings.
  • Such solidification can e.g. are supported by so-called separating rings (crushing rings) at the entrance of the horizontal continuous casting mold.
  • the generic method is known from DE-PS 31 37 119.
  • the formation of the ring-shaped crust-like cooling zones with a relatively stationary mold and a moving strand within a so-called drawing length leads to a falling flank in the cross-section of the crust ring.
  • the further course approaches the mold wall, so that with each drawing stroke there is an annular area of liquid metal which is not considered for the transmission of tensile forces.
  • the farther away the liquid ring-shaped area is from the separating ring the longer holding times must be required to support the desired crust ring formation, with long holding times leading to low output of continuous casting material.
  • EP-A 0 144 795 it is known from EP-A 0 144 795 to ensure a constant relative movement between the mold and the strand by means of a sinusoidal mold movement at a speed that is faster than the strand withdrawal speed with a continuous strand withdrawal. This also occurs in the case of a stationary mold with intermittent strand withdrawal in accordance with GB-A-2 015 081.
  • the object of the present invention is to take suitable measures to place the crust area at risk of tearing closer to the mold entrance (e.g. separating ring) in order to more easily detach the strand shell that forms from the mold wall with constant friction.
  • the object is achieved in that, in addition to the reciprocating movement of the horizontal continuous casting mold, the cast strand is conveyed in steps in the direction of the strand running such that the movements of the horizontal continuous casting mold and the strand extracting machine take place synchronously in the strand running direction at the same speed.
  • This not only shifts the ring-shaped crust area closer to the mold entrance (separating ring), but also creates a larger crust thickness in the area mentioned, so that larger pull-out forces or faster application, i.e. faster casting.
  • the otherwise necessary longer holding time is advantageously placed in the synchronous movement of the horizontal continuous casting mold and the extracting machine, since this movement brings about a relative movement between the cast strand and the horizontal continuous casting mold wall equal to zero.
  • the cast strand be compressed into the horizontal continuous casting mold outside of the synchronous movements of the horizontal continuous casting mold and the strand pulling machine. This measure additionally increases the thickness of the ring crust.
  • Such a process step can be carried out in such a way that the horizontal continuous casting mold is pushed against the continuous drawing machine.
  • a further improvement of the invention is that dwell times of the strand extraction machine are switched on between a recoil and a pulling movement. This measure also means a further strengthening of the strand shells or a better welding of the crust rings which follow one another in the strand running direction.
  • the mold backward movement 1 On the abscissa, the mold backward movement 1, the mold forward movement 2 and the forward movement 3 of the pulling machine and the backward movement 4 of the pulling machine are shown.
  • the pouring direction and the product length are also shown in the direction of arrow 5.
  • the pull-out machine is then decoupled and returned to the starting position via the backward movement 4.
  • the cycle described then begins, although the holding time 9 could of course also be dispensed with, for example by the retraction of the pull-out machine could take place faster due to the backward movement 4.
  • the holding times 7 and 9 thus mean possible variations in order to reinforce the strand shells or the crust rings.
  • FIG. 2 also shows the course of the length of the cast strand on the line 10a for casting without the invention. A comparison of lines 10a and 10 makes it clear that a higher cast strand production is achieved due to the invention.
  • the formation of the ring crust 12 is made clear in FIG. 3.
  • the strand shell is formed on the inner wall 6a of the horizontal continuous casting mold 6 and on the end face 13a of the separating ring 13 running perpendicular thereto, the horizontal continuous casting mold 6 being kept relatively calm. This creates the weakest shell part 8.
  • the tensile force 14 loads the ring crust 12 inappropriately high.
  • the horizontal continuous casting mold 6 being moved in the direction 15, i.e. the weakest shell point 8 is located closer to the end face 13a of the separating ring 13.
  • the direction of the metal flow directed into the entrance of the horizontal continuous casting mold 6 is denoted by 16.
  • the ring crust 12 grows at the weakest shell point 8 at a distance 18 by a multiple of the friction length 17.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
EP86730077A 1985-07-27 1986-05-07 Verfahren zum horizontalen Stranggiessen von Metallen, insbesondere von Stahl Expired - Lifetime EP0210944B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853526935 DE3526935A1 (de) 1985-07-27 1985-07-27 Verfahren zum horizontalen stranggiessen von metallen, insbesondere von stahl
DE3526935 1985-07-27

Publications (3)

Publication Number Publication Date
EP0210944A2 EP0210944A2 (de) 1987-02-04
EP0210944A3 EP0210944A3 (en) 1988-07-06
EP0210944B1 true EP0210944B1 (de) 1990-09-19

Family

ID=6276948

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86730077A Expired - Lifetime EP0210944B1 (de) 1985-07-27 1986-05-07 Verfahren zum horizontalen Stranggiessen von Metallen, insbesondere von Stahl

Country Status (3)

Country Link
EP (1) EP0210944B1 (enrdf_load_stackoverflow)
JP (1) JPS6228047A (enrdf_load_stackoverflow)
DE (2) DE3526935A1 (enrdf_load_stackoverflow)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2105081B (en) * 1981-08-26 1986-02-05 Davey Lowey Limited Monitor for continous casting apparatus
DE3137119C2 (de) * 1981-09-18 1983-07-28 Mannesmann AG, 4000 Düsseldorf Verfahren und Vorrichtung zum Horizontalstranggießen von Metallen, insbesondere von Stahl
DE3148033A1 (de) * 1981-12-04 1983-06-09 Realid GmbH, 4050 Mönchengladbach Ausziehmaschine fuer horizontale stranggiessanlage
JPS58218355A (ja) * 1982-06-11 1983-12-19 Mitsubishi Heavy Ind Ltd 水平連鋳方法及び装置
DE3343479C1 (de) * 1983-12-01 1984-08-23 Fried. Krupp Gmbh, 4300 Essen Verfahren zum Oszillieren einer in sich starren Horizontal-Stranggiesskokille fuer Metalle,insbesondere Stahl
DE3426168C2 (de) * 1984-07-16 1985-11-21 Mannesmann AG, 4000 Düsseldorf Verfahren zum horizontalen Stranggießen von Metallen, insbesondere von Stahl

Also Published As

Publication number Publication date
EP0210944A2 (de) 1987-02-04
JPS6228047A (ja) 1987-02-06
DE3526935A1 (de) 1987-02-05
DE3674287D1 (de) 1990-10-25
DE3526935C2 (enrdf_load_stackoverflow) 1987-07-09
EP0210944A3 (en) 1988-07-06

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