US3303538A - Method for lowering a multiple cast ingot during continuous casting using only web contact - Google Patents

Method for lowering a multiple cast ingot during continuous casting using only web contact Download PDF

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Publication number
US3303538A
US3303538A US272283A US27228363A US3303538A US 3303538 A US3303538 A US 3303538A US 272283 A US272283 A US 272283A US 27228363 A US27228363 A US 27228363A US 3303538 A US3303538 A US 3303538A
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United States
Prior art keywords
lowering
continuous casting
cast ingot
during continuous
web contact
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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
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US272283A
Inventor
Frenken Klaus
Stellmacher Wilhelm
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Vodafone GmbH
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Mannesmann AG
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Publication date
Priority claimed from DEM52524A external-priority patent/DE1158668B/en
Application filed by Mannesmann AG filed Critical Mannesmann AG
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    • 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
    • B22D11/1287—Rolls; Lubricating, cooling or heating rolls while in use
    • 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

Definitions

  • the casting must have solidified above the lowering rolls because squeeze cracks tend to form on castings pressed by the lowering rolls whilst their core is still liquid.
  • the distance between the ingot mould and the lowering rolls must be so large that, with a given lowering speed, the crater point is above the lowering rolls. -It is also possible to reduce the lowering speed, in order to produce a sulficiently long solidification time.
  • the castings are distorted by about 2 to 4 mm. by the contact pressure of the lowering rolls, and this has an unfavourable effect particularly with round castings which tend to become oval or unround.
  • the substantial advantage of the invention is that the arrangement of the transport rolls becomes independent of the position of the crater. These rolls may be located above the crater in the direction towards the ingot hold without incurring the risk of causing squeeze cracks in the casting, and reduce substantially the overall structural height of the plant.
  • FIGURES l to 3 show diagrammatically in FIGURES l to 3 an arrangement for carrying out the method according to the invention.
  • the ladle 1 is located above the distributor 2.
  • an ingot mold 4 constructed for casting three continuous castings 5.
  • the lowering rolls are shown at 6.
  • the castings 5 form continuous castings and are interconnected by webs 7.
  • the lowering rolls 6 have roll rings 8 which collaborate with the webs 7.
  • the roll rings 8 are positively connected with the rolls 6 by pass springs 9.
  • distance rings 10 and clamping rings 11 serve to transmit axial forces to the rolls 6.
  • the connection between the roll rings '8 and the rolls 6 may also be effected by other known means.
  • a continuous casting a method for lowering and guiding a multiple cast casting of preferably round cross-section with individual ingots interconnected by webs that are thin in comparison with the cross-sectional area of said ingots, the improvement comprising, using a roll contact pressure only on said webs and solely for lowering and guiding said casting.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Description

K. FRENKEN ET AL 3,303,538 A MULTIPLE CAST INGOT DURING CONTINUOUS Feb. 14, 1967 M'ETf iOD FOR LOWERING CASTING USING ONLY WEB CONTACT 3 Sheets-Sheet 1 Filed April 11, 1963 Feb. 14, 1967 K. FRENKEN ET AL 3,303,538
METHOD FOR LOWERING A MULTIPLE CAST INGOT DURING CONTINUOUS CASTING USING ONLY WEB CONTACT Filed April ll, 1963 3 Sheets-Sheet 2 Inventors Klaus Frenken 81 Wilhelm Sfe/lmacher By their Attorneys 3,303,538 METHOD FOR LOWERING A MULTIPLE CAST INGOT DURING CONTINUOUS Feb. 14, 1967 FRENKEN ET AL CASTING USING ONLY WEB CONTACT 5 Sheets-Sheet 5 Filed April 11, 1963 S ar w e n nhr M C m SH remAH m r W C! 1 w HUB m United States Patent 3,303,538 METHOD FOR LOWERING A MULTIPLE CAST INGOT DURING CGNTINUQUS CASTING USING ONLY WEB CONTACT Klaus Frenken, Essen-Werden, and Wilhelm telimacher, Dusseldorr, Germany, assignors to Mannesmann Aktiengesellschaft, Dusseldorf, Germany, a German body corporate Filed Apr. 11, 1963, Ser. No. 272,283 Claims priority, application Germany, Apr. 17, 1962, M 52,524 1 Claim. (Cl. 22-2001) For lowering individual ingots in continuous casting plants, the lowering rolls are designed as cylindrical or profiled rolls, resting against the continuous casting. The casting must have solidified above the lowering rolls because squeeze cracks tend to form on castings pressed by the lowering rolls whilst their core is still liquid. In order to prevent internal cracks, the distance between the ingot mould and the lowering rolls must be so large that, with a given lowering speed, the crater point is above the lowering rolls. -It is also possible to reduce the lowering speed, in order to produce a sulficiently long solidification time. In addition, the castings are distorted by about 2 to 4 mm. by the contact pressure of the lowering rolls, and this has an unfavourable effect particularly with round castings which tend to become oval or unround.
These drawbacks also occur with conventional devices for pulling off multiple cast ingots, that is to say, ingots having preferably the same shape which are connected by webs and are cast in the same mold, and which are then separated after solidifying by means of known apparatus.
According to the invention, these drawbacks may be avoided in that the contact pressure is exerted only on the connecting webs between the individual ingots of the multiple casting.
The substantial advantage of the invention is that the arrangement of the transport rolls becomes independent of the position of the crater. These rolls may be located above the crater in the direction towards the ingot hold without incurring the risk of causing squeeze cracks in the casting, and reduce substantially the overall structural height of the plant.
Fatented Feb. 14, 1967 The accompanying drawing shows diagrammatically in FIGURES l to 3 an arrangement for carrying out the method according to the invention.
As shown in FIG. 1 (end view) and FIG. 2 (side elevation), the ladle 1 is located above the distributor 2. On the upper stage 3 of the continuous casting plant, there is provided an ingot mold 4, constructed for casting three continuous castings 5. The lowering rolls are shown at 6.
As may be seen more clearly from FIG. 3, the castings 5 form continuous castings and are interconnected by webs 7. The lowering rolls 6 have roll rings 8 which collaborate with the webs 7. The roll rings 8 are positively connected with the rolls 6 by pass springs 9. In order to allow the position of the roll rings 8 to be adapted to different sizes of castings or to different distances between the Webs, there are provided distance rings 10 and clamping rings 11. The clamping rings serve to transmit axial forces to the rolls 6. However, the connection between the roll rings '8 and the rolls 6 may also be effected by other known means.
What we claim is:
In a continuous casting a method for lowering and guiding a multiple cast casting of preferably round cross-section with individual ingots interconnected by webs that are thin in comparison with the cross-sectional area of said ingots, the improvement comprising, using a roll contact pressure only on said webs and solely for lowering and guiding said casting.
References Cited by the Examiner UNITED STATES PATENTS 2,183,010 12/1939 Coxe 22-575 2,975,493 3/1961 Morton et al. 22-572 3,130,457 4/1964 Bungeroth et al. 22-575 3,147,521 9/1964 Boeh-m 22-2001 3,189,957 6/1965 Luteijn 22-2001 3,191,251 6/ 1965 Olsson 22-2001 3,209,452 10/1965 Schneckenburger 22-2001 J. SPENCER OVERHOLSER, Primary Examiner.
R. D. BALDWIN, Assistant Examiner,
US272283A 1962-04-17 1963-04-11 Method for lowering a multiple cast ingot during continuous casting using only web contact Expired - Lifetime US3303538A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEM52524A DE1158668B (en) 1962-04-17 1962-04-17 Method and device for lowering a multiple strand connected by webs during continuous casting
FR929381A FR1352400A (en) 1962-04-17 1963-03-27 Method and apparatus for lowering a continuous compound ingot during continuous casting

Publications (1)

Publication Number Publication Date
US3303538A true US3303538A (en) 1967-02-14

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BE (1) BE630106A (en)
FR (1) FR1352400A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2183010A (en) * 1936-11-28 1939-12-12 Charles D Coxe Direct rolling of hot metal
US2975493A (en) * 1957-02-05 1961-03-21 British Iron Steel Research Casting of metals
US3130457A (en) * 1962-09-24 1964-04-28 Alfred H Anderson Sash balance
US3147521A (en) * 1961-08-10 1964-09-08 Boehm Arnold Henry Continuous casting and forming process
US3189957A (en) * 1956-05-04 1965-06-22 Philips Corp Method of manufacturing permanent magnets by continuous castings
US3191251A (en) * 1962-08-16 1965-06-29 Olsson Erik Allan Process for treating continuously cast material
US3209452A (en) * 1961-05-05 1965-10-05 Moossche Eisenwerke Ag Method of producing bars or sections by continuous casting

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2183010A (en) * 1936-11-28 1939-12-12 Charles D Coxe Direct rolling of hot metal
US3189957A (en) * 1956-05-04 1965-06-22 Philips Corp Method of manufacturing permanent magnets by continuous castings
US2975493A (en) * 1957-02-05 1961-03-21 British Iron Steel Research Casting of metals
US3209452A (en) * 1961-05-05 1965-10-05 Moossche Eisenwerke Ag Method of producing bars or sections by continuous casting
US3147521A (en) * 1961-08-10 1964-09-08 Boehm Arnold Henry Continuous casting and forming process
US3191251A (en) * 1962-08-16 1965-06-29 Olsson Erik Allan Process for treating continuously cast material
US3130457A (en) * 1962-09-24 1964-04-28 Alfred H Anderson Sash balance

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BE630106A (en)
FR1352400A (en) 1964-02-14

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