US3880601A - Method of preparing a continuously cast ingot for rolling or the like - Google Patents

Method of preparing a continuously cast ingot for rolling or the like Download PDF

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Publication number
US3880601A
US3880601A US426659A US42665973A US3880601A US 3880601 A US3880601 A US 3880601A US 426659 A US426659 A US 426659A US 42665973 A US42665973 A US 42665973A US 3880601 A US3880601 A US 3880601A
Authority
US
United States
Prior art keywords
ingot
casting
recess
portions
arch
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
US426659A
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English (en)
Inventor
Klaus Wunnenberg
Josef Kleinen
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
Application granted granted Critical
Publication of US3880601A publication Critical patent/US3880601A/en
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
    • B21B1/08—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
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12229—Intermediate article [e.g., blank, etc.]
    • Y10T428/12271—Intermediate article [e.g., blank, etc.] having discrete fastener, marginal fastening, taper, or end structure
    • Y10T428/12285—Single taper [e.g., ingot, etc.]
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12389—All metal or with adjacent metals having variation in thickness

Definitions

  • ABSTRACT An ingot has been produced by continous casting and cutting a length of the casting.
  • the ingot is presumed to be used for being rolled into a product having particular profile and to be obtained by rolling different portions of the ingot differently as far as reduction in local thickness is concerned.
  • the end faces of the ingot are provided with arch-shaped recesses in those regions of the ingot, which will undergo a higher degree in reduction than the remainder, so that the ingot in turn can have dimensions more suitable for continuous casting, while such dimensions do not have detrimental effect on rolling due to the recesses.
  • the problem will be specified for a particular case. Take the casting of a double T. I beam or flange beam ingot. also called dog bones. From the point of view of casting. the metal should be fed in the region of the stem or web portion of this particular I-profile. Depending on the throughput of casting. it is necessary here to maintain a minimum thickness of that stem of at least I mm (about 2.5 inches). This way one can use a charging chamber, dipping into the mold and having submerged feeder ports. while the open surface of the metal in the mold is covered with a slag producing powder. These various features permit production of high quality ingots (see for example U.S. Pat. Nos. 3,587,719; 3,648,761; 3.669.]81). However.
  • an ingot with a particular profile in a manner most favorable for obtaining high quality texture in a manner known per se.
  • This continuously cast ingot is cut into sections or predetermined lengths.
  • those portions of that length. which will be deformed more than others during subsequent working, e.g. rolling. will be provided with arched recesses at the ends, extending axially therefrom, i.e. in the direction towards each other, along the direction of end-to-end dimension of the ingot.
  • the depth of such arch-shaped indentation is to be 0.2 to 2 times larger than the thickness of the ingot at that point.
  • the particular cutting plane 3 illustrates and defines the end faces of flanges 2 at one end of the ingot and without modifications. so that the axial length of the section is reduced by the recess in stem and web por tion 1 of the ingot only with maximum thickness reduction during subsequent rolling resulting in the center. corresponding to the apex of the arch 4.
  • the height 5 of that arch apex relative to plane 3 is illustrated to be about equal to the thickness of the web thereat. the thickness being measured transverse to the arch. i.e. in the plane of the drawing of FIG. 1.
  • Such a lzl ratio is well within the range stated above (0.2 to 2.0). However. in the specific case of ingots for making I beams or flanged beams. a 0.5 ratio was found to be preferred. so that the drawings are not to be interpreted to be on scale for this preferred example of practicing the invention.
  • the drawing depicts. as stated above, an ingot sec- -tion to be prepared in that manner for a subsequent rolling process. reducing the thickness of flanges 2 as well as the stem portion 1, but the latter more than the former. Consequently, excess" material will flow into the arches. (there being one on either end). As these arches are provided. the rolling process can proceed because flow space is provided for within the contour of the final profile.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Continuous Casting (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Extrusion Of Metal (AREA)
US426659A 1972-12-19 1973-12-20 Method of preparing a continuously cast ingot for rolling or the like Expired - Lifetime US3880601A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2262978A DE2262978C3 (de) 1972-12-19 1972-12-19 Stranggegossenes Vorprofil zum Walzen von Doppel-T-Trägern

Publications (1)

Publication Number Publication Date
US3880601A true US3880601A (en) 1975-04-29

Family

ID=5865253

Family Applications (1)

Application Number Title Priority Date Filing Date
US426659A Expired - Lifetime US3880601A (en) 1972-12-19 1973-12-20 Method of preparing a continuously cast ingot for rolling or the like

Country Status (11)

Country Link
US (1) US3880601A (cs)
JP (1) JPS4990659A (cs)
BE (1) BE806810A (cs)
CA (1) CA986339A (cs)
DE (1) DE2262978C3 (cs)
ES (1) ES419550A1 (cs)
FR (1) FR2213111B1 (cs)
GB (1) GB1429710A (cs)
IT (1) IT995969B (cs)
LU (1) LU69014A1 (cs)
NL (1) NL7317003A (cs)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE7910161L (sv) * 1979-12-10 1981-06-11 Per Olof Strandell Forfarande och anordning for att smida profiler
DE3012702A1 (de) * 1980-04-01 1981-10-08 Proizvodstvennoe ob"edinenie Uralmaš, Sverdlovsk Verfahren zur herstellung von doppel-t-traegern

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3416222A (en) * 1964-05-05 1968-12-17 British Iron Steel Research Manufacture of elongate articles
US3492853A (en) * 1967-09-06 1970-02-03 Bliss 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

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1464929A (en) * 1921-05-31 1923-08-14 Nat Brass & Copper Company Method of rolling plate and like metal and blank therefor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3416222A (en) * 1964-05-05 1968-12-17 British Iron Steel Research Manufacture of elongate articles
US3492853A (en) * 1967-09-06 1970-02-03 Bliss 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

Also Published As

Publication number Publication date
FR2213111B1 (cs) 1978-11-17
DE2262978C3 (de) 1975-05-28
DE2262978B2 (de) 1974-10-17
IT995969B (it) 1975-11-20
JPS4990659A (cs) 1974-08-29
LU69014A1 (cs) 1974-02-22
CA986339A (en) 1976-03-30
DE2262978A1 (de) 1974-07-04
BE806810A (fr) 1974-02-15
ES419550A1 (es) 1976-06-16
FR2213111A1 (cs) 1974-08-02
GB1429710A (en) 1976-03-24
NL7317003A (cs) 1974-06-21

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