EP0415170B1 - Elektromagnetische Rühreinrichtung in einer Stranggiessanlage - Google Patents

Elektromagnetische Rühreinrichtung in einer Stranggiessanlage Download PDF

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Publication number
EP0415170B1
EP0415170B1 EP90115533A EP90115533A EP0415170B1 EP 0415170 B1 EP0415170 B1 EP 0415170B1 EP 90115533 A EP90115533 A EP 90115533A EP 90115533 A EP90115533 A EP 90115533A EP 0415170 B1 EP0415170 B1 EP 0415170B1
Authority
EP
European Patent Office
Prior art keywords
cooling
stirrer
liquid
water
casting
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
EP90115533A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0415170A2 (de
EP0415170A3 (en
Inventor
Markus Schmid
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.)
Concast Standard AG
Original Assignee
Concast Standard 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 Concast Standard AG filed Critical Concast Standard AG
Publication of EP0415170A2 publication Critical patent/EP0415170A2/de
Publication of EP0415170A3 publication Critical patent/EP0415170A3/de
Application granted granted Critical
Publication of EP0415170B1 publication Critical patent/EP0415170B1/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
    • B22D11/10—Supplying or treating molten metal
    • 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
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal
    • B22D11/114—Treating the molten metal by using agitating or vibrating means
    • B22D11/115—Treating the molten metal by using agitating or vibrating means by using magnetic fields

Definitions

  • the invention relates to an electromagnetic stirring device according to the features of the preamble of claim 1.
  • Electromagnetic stirring devices are known both inside and below continuous casting molds. Such electromagnetic stirring devices generally have the task of improving the strand quality.
  • an electromagnetic stirring device for stirring the liquid strand sump is known, which is arranged within a continuous casting mold.
  • the stirring device consisting of coils, coil cores and magnetic yoke, is arranged in a stirrer housing which is connected to an inlet and outlet for cooling water. Chilled water is used as the cooling liquid for the heat generated in the coils.
  • the quality of the mold cooling water is kept within tight tolerances in terms of hardness, suspended matter, salt content and pH value, it can lead to harmful excretions and deposits and, as a result, to malfunctions that result in costly idle times when flowing through an electromagnetic stirring device through the magnetic fields Cause maintenance work.
  • the invention has for its object to remedy the disadvantages mentioned and in particular to create a trouble-free and low-maintenance stirring device that works properly without additional treatment of the cooling water.
  • the stirring device according to the invention makes it possible to dispense with the aforementioned expensive treatment of the cooling water.
  • Chilled or secondary cooling water that is already used on the system can be used.
  • cooling water contaminated by suspended matter can also be used without damaging or disturbing the stirring device.
  • the electromagnetic stirring process in continuous casting can be made more economical.
  • first liquid is an electrically non-conductive liquid, like oil etc.
  • second liquid is water.
  • other cooling media also fluids known in the art can also be used.
  • the cooling pipe system in the stirrer housing is connected to the mold cooling water tank and is guided in a closed circuit parallel to or subsequently to the mold cooling.
  • both the continuous casting installation and the operation can be designed simply if the cooling pipe system in the stirrer housing is arranged between a feed for the secondary cooling water for the strand cooling and spraying device for cooling the strand.
  • the cooling pipe system in the stirrer housing can be designed in various ways in its geometric shape. Ribless or finned cooling pipe systems can be used.
  • a cooling pipe system is designed for large cooling capacities, it is advantageous if it is subdivided into several independent cooling pipe systems within the stirrer housing, each of which has its own feed.
  • the paths for the cooling water can be very short and with few deflections and with large arc radii. This measure can further reduce the quality requirements for the cooling water.
  • the stirrer housing In order to protect the first liquid in the stirrer housing from heating up by heat radiation from the cast strand, it is further proposed to provide the stirrer housing with an additional cooling water jacket or radiation shield in the radiation region of the cast strand.
  • the cooling water jacket can advantageously be connected to the water outlet side of the cooling pipe system.
  • the stirring device 1 consists of four stirring coils 4 with coil cores 5 and a magnetic yoke 6, which connects the four coil cores 5.
  • These stirrer parts are housed in a closed housing 7 and immersed in a first cooling liquid 8, for example oil.
  • This first cooling liquid 8 is essentially stationary, ie it remains in the stirrer housing 7 during operation. Due to the uneven heat distribution in the liquid inside the housing 7, there are of course certain buoyant flows. If desired, flow movements in the cooling liquid 8 can also be artificial be applied.
  • a second liquid 10 is guided through this first stationary liquid 8 within the stirrer housing 7.
  • This second liquid 10 is a cooling water which is required in the immediate vicinity of the stirrer for the continuous casting process. There is no need for preparation for cooling the stirrer. In the present case, it is secondary cooling water for the direct strand cooling 13 that first cools the stirring device 1 and then the strand 2.
  • the cooling pipe system 11 is inserted between a feed line 12 for secondary cooling water and a spray device 14 for cooling the strand 2.
  • a spray fan of the spray device 14 also protects the stirrer housing 7 at least partially from the heat radiation from the strand.
  • the stirrer housing 7 is provided on the left side of FIG. 2 with a water jacket 15 or radiation protection shield in the radiation region of the cast strand 2.
  • the water inflow into the water jacket 15 takes place from the cooling pipe system 11.
  • a spray device 14 ' is used to cool the strand 2 with the same cooling water.
  • the cooling pipe system 11 - 11 ′′′ is arranged above and below the magnetic yoke 6 connecting the individual coils 4.
  • the cooling pipe system 11 within the stirrer housing is divided into several mutually independent cooling pipes 11 - 11 ′′′, each with its own feed and cooling water outlet opening in the form of the spray device 14.
  • the cooling pipe system 11 is made of non-ferromagnetic material, such as copper, stainless steel, etc.
  • a stirrer housing 30 is installed in a continuous casting mold 31 and oscillates together with the mold.
  • the structure of the stirrer is essentially the same as in FIGS. 1 and 2.
  • a cooling pipe system 32 is connected to a feed line 33 of the mold cooling water.
  • the cooling water can enter the cooling pipe system 32 through a water inlet 35 after it has cooled the mold, and through a water outlet 36 the cooling water is drained off or on. returned.
  • the mold cooling water fulfills the dual function of mold and stirrer cooling with this water supply. Instead of this solution, the water inflow into the cooling pipe system 32 can also be taken directly from the feed line 33 and can be routed parallel to the cooling of the mold.
  • the second liquid is a cooling water which is required in the immediate vicinity of the stirrer for the continuous casting operation. Additional preparation of such cooling media for cooling the stirrer can be dispensed with.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
  • Accessories For Mixers (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
EP90115533A 1989-08-28 1990-08-14 Elektromagnetische Rühreinrichtung in einer Stranggiessanlage Expired - Lifetime EP0415170B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3928311 1989-08-28
DE3928311A DE3928311A1 (de) 1989-08-28 1989-08-28 Elektromagnetische ruehreinrichtung in einer stranggiessanlage

Publications (3)

Publication Number Publication Date
EP0415170A2 EP0415170A2 (de) 1991-03-06
EP0415170A3 EP0415170A3 (en) 1992-05-13
EP0415170B1 true EP0415170B1 (de) 1994-09-21

Family

ID=6387986

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90115533A Expired - Lifetime EP0415170B1 (de) 1989-08-28 1990-08-14 Elektromagnetische Rühreinrichtung in einer Stranggiessanlage

Country Status (7)

Country Link
US (1) US5088547A (es)
EP (1) EP0415170B1 (es)
JP (1) JPH0394962A (es)
KR (1) KR0168418B1 (es)
AT (1) ATE111789T1 (es)
DE (2) DE3928311A1 (es)
ES (1) ES2063213T3 (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110048669A1 (en) * 2009-08-31 2011-03-03 Abb Inc. Electromagnetic stirrer arrangement with continuous casting of steel billets and bloom
CN108393444B (zh) * 2018-04-23 2024-03-22 宣化钢铁集团有限责任公司 一种独立冷却外水直冷式电磁搅拌结晶器
CN109128066B (zh) * 2018-10-17 2023-12-26 湖南和创磁电科技有限公司 一种复合冷凝的蒸发冷却电磁搅拌器
CN111268884B (zh) * 2020-03-31 2024-04-09 浙江科茂环境科技有限公司 一种油泥处理系统及方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU79721A1 (fr) * 1978-05-26 1979-12-06 Arbed Perfectionnement aux installations de coulee continue electrorotative
CH631903A5 (de) * 1978-10-25 1982-09-15 Concast Ag Vorrichtung zum kuehlen eines stranges in einer stranggiessanlage fuer stahl mit einem elektromagnetischen ruehrer.
FR2441448A1 (fr) * 1978-11-17 1980-06-13 Rotelec Sa Lingotiere de coulee continue equipee interieurement d'un inducteur electromagnetique
EP0013840B1 (fr) * 1979-01-29 1983-03-02 C E M COMPAGNIE ELECTRO MECANIQUE Société Anonyme Lingotière pour coulée continue de billettes avec inducteur électromagnétique de brassage
US4465118A (en) * 1981-07-02 1984-08-14 International Telephone And Telegraph Corporation Process and apparatus having improved efficiency for producing a semi-solid slurry
JPS58215254A (ja) * 1982-06-08 1983-12-14 Kawasaki Steel Corp 連続鋳造用鋳型の下方に配設される電磁攪拌装置
JPS5921256A (ja) * 1982-07-23 1984-02-03 Mitsubishi Electric Corp 鉄心積み装置
JPS59150649A (ja) * 1983-02-17 1984-08-28 Kawasaki Steel Corp ブル−ム連鋳用電磁撹拌鋳型
JPS63104764A (ja) * 1986-10-20 1988-05-10 Mitsubishi Heavy Ind Ltd 電磁撹拌装置
IT1221724B (it) * 1987-11-24 1990-07-12 Danieli Off Mecc Dispositivo potenziatore del campo magnetico in lingottiera

Also Published As

Publication number Publication date
JPH0394962A (ja) 1991-04-19
ES2063213T3 (es) 1995-01-01
KR0168418B1 (ko) 1999-01-15
DE3928311A1 (de) 1991-03-07
EP0415170A2 (de) 1991-03-06
DE59007223D1 (de) 1994-10-27
US5088547A (en) 1992-02-18
ATE111789T1 (de) 1994-10-15
EP0415170A3 (en) 1992-05-13
KR910004273A (ko) 1991-03-28

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