EP0758277A1 - Verfahren und vorrichtung zum erwärmen einer metallischen schmelze - Google Patents
Verfahren und vorrichtung zum erwärmen einer metallischen schmelzeInfo
- Publication number
- EP0758277A1 EP0758277A1 EP95914277A EP95914277A EP0758277A1 EP 0758277 A1 EP0758277 A1 EP 0758277A1 EP 95914277 A EP95914277 A EP 95914277A EP 95914277 A EP95914277 A EP 95914277A EP 0758277 A1 EP0758277 A1 EP 0758277A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mold
- melt
- thermal energy
- casting
- heating
- 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.)
- Granted
Links
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
- B22D11/11—Treating the molten metal
Definitions
- the invention relates to a method for heating a metallic melt introduced into a mold of a continuous casting system by means of an immersion nozzle, in particular a steel melt covered with a casting powder, and a device for carrying out the method.
- Casting speed causes lower friction forces than with high or low casting speed. From this it can be deduced that the
- the mold stroke and the strand lubrication must be optimally adjusted to the casting conditions.
- the casting powder on the melt influences the
- Casting area is largest and decreases towards the mold exit.
- pouring aids are essentially only affected in the area of the pouring level.
- the strand shell cools under the great heat removal, shrinks and lifts off the mold wall.
- Liquid steel contributes to the heat dissipated in the mold
- Strand shell prevented. Cracks develop in the strand shell for example by hanging up during or after the mold overflows or when bridges are formed between the immersion spout and the strand shell.
- the invention has therefore set itself the goal of creating a method and a corresponding device with which a uniform
- the invention achieves this goal by the characterizing features of method claim 1 and device claim 4.
- a laser beam is used, in which the energy of a bundled light beam is used for heating.
- Laster beam differs from ordinary light in its high monochrome, coherence, parallelism and energy density.
- Beam quality influences the concrete work size value.
- the intensity can be adjusted by varying the values mentioned.
- Laser energy sources can directly influence the critical area in the continuous casting of steel materials, namely the area of the mold level.
- the punctiform thermal energy is not only set in the amount of its thermal energy, but also in its temporal use.
- punctiform is not here
- the thermal energy point has the usual finite expansion when using lasers. It is suggested that the thermal energy point in the areas between the immersion nozzle and the to move the corresponding long side of the mold edge.
- the starting point, the end point and the paths and speeds between these end points can be freely selected.
- the devices for generating the laser beam can be arranged at a safe location outside the mold and the immersion nozzle, the laser beam being able to be guided to the desired area on the surface of the melt via a mirror.
- Figure 2 shows the location of the thermal energy point.
- FIG. 1 shows a section in the upper region and a top view of the continuous casting device 10 in the lower region.
- the melt S on which the casting powder G floats.
- the immersion spout 12 is immersed in the melt 5.
- a laser energy duel 21 is arranged, from which a laser beam is guided via laser optics 27 via a movable central mirror 22 or a movable outside mirror 23 onto the surface of the molten bath S.
- the laser energy source 21 can be at any point outside of the
- the mirrors 22 and 23 are pivotable about an axis 26.
- the axis 26 is connected to a control unit 32, which with a
- Calculator 31 is connected.
- This computing element 31 is connected to a temperature sensor 33 in terms of measurement technology and to the laser energy source 21 in terms of control technology.
- a temperature sensor 33 in terms of measurement technology
- the laser energy source 21 in terms of control technology.
- the melt surface can be coated on both sides of the immersion spout 12 via a laser energy source 21 through the use of two fixed mirrors 24, of which front mirrors can be designed to pivot away in the laser steel direction.
- FIG. 2 shows the position of the energy point as a function of time.
- the position L in the area between the mold 11 and the immersion spout 12 is shown in the upper left side.
- the thermal energy point is on one side of the
- the middle of the bath surface is led outwards at a slow speed and then jerkily taken back to the center in order to be brought out again at a reduced speed.
- a heat point is started from the center and led outwards, then jerked back to the center to be led out to the other side at a slow speed and then to jump back to the center and the heat in to the other side at a slow speed bring in the surface of the weld pool.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Furnace Details (AREA)
- Laser Beam Processing (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Coating With Molten Metal (AREA)
- Tunnel Furnaces (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4415212A DE4415212C1 (de) | 1994-04-26 | 1994-04-26 | Verfahren und Vorrichtung zum Erwärmen einer metallischen Schmelze |
DE4415212 | 1994-04-26 | ||
PCT/DE1995/000427 WO1995029022A1 (de) | 1994-04-26 | 1995-03-30 | Verfahren und vorrichtung zum erwärmen einer metallischen schmelze |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0758277A1 true EP0758277A1 (de) | 1997-02-19 |
EP0758277B1 EP0758277B1 (de) | 1998-03-18 |
Family
ID=6516920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95914277A Expired - Lifetime EP0758277B1 (de) | 1994-04-26 | 1995-03-30 | Verfahren und vorrichtung zum erwärmen einer metallischen schmelze |
Country Status (12)
Country | Link |
---|---|
US (1) | US5791399A (de) |
EP (1) | EP0758277B1 (de) |
JP (1) | JPH09512213A (de) |
CN (1) | CN1146170A (de) |
AT (1) | ATE164101T1 (de) |
AU (1) | AU681022B2 (de) |
BR (1) | BR9507531A (de) |
CA (1) | CA2188938A1 (de) |
DE (1) | DE4415212C1 (de) |
RU (1) | RU2120836C1 (de) |
WO (1) | WO1995029022A1 (de) |
ZA (1) | ZA953359B (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2626406A1 (de) * | 2012-02-13 | 2013-08-14 | Prosimet S.p.A. | Schmiermittelzusammensetzung für kontinuierlichen Giessprozess |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5131941A (en) * | 1959-04-08 | 1992-07-21 | Lemelson Jerome H | Reaction apparatus and method |
JPS61144249A (ja) * | 1984-12-18 | 1986-07-01 | Kawasaki Steel Corp | 連続鋳造方法 |
US4750947A (en) * | 1985-02-01 | 1988-06-14 | Nippon Steel Corporation | Method for surface-alloying metal with a high-density energy beam and an alloy metal |
DE3666161D1 (en) * | 1986-03-07 | 1989-11-16 | Nippon Steel Corp | An anode system for plasma heating usable in a tundish |
WO1989007499A1 (en) * | 1988-02-09 | 1989-08-24 | The Broken Hill Proprietary Company Limited | Superheating and microalloying of molten metal by contact with a plasma arc |
US5314003A (en) * | 1991-12-24 | 1994-05-24 | Microelectronics And Computer Technology Corporation | Three-dimensional metal fabrication using a laser |
-
1994
- 1994-04-26 DE DE4415212A patent/DE4415212C1/de not_active Expired - Fee Related
-
1995
- 1995-03-30 AU AU21346/95A patent/AU681022B2/en not_active Ceased
- 1995-03-30 RU RU96119974A patent/RU2120836C1/ru active
- 1995-03-30 CN CN95192663A patent/CN1146170A/zh active Pending
- 1995-03-30 JP JP7527265A patent/JPH09512213A/ja active Pending
- 1995-03-30 BR BR9507531A patent/BR9507531A/pt not_active IP Right Cessation
- 1995-03-30 US US08/727,536 patent/US5791399A/en not_active Expired - Fee Related
- 1995-03-30 WO PCT/DE1995/000427 patent/WO1995029022A1/de active IP Right Grant
- 1995-03-30 CA CA002188938A patent/CA2188938A1/en not_active Abandoned
- 1995-03-30 AT AT95914277T patent/ATE164101T1/de not_active IP Right Cessation
- 1995-03-30 EP EP95914277A patent/EP0758277B1/de not_active Expired - Lifetime
- 1995-04-25 ZA ZA953359A patent/ZA953359B/xx unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9529022A1 * |
Also Published As
Publication number | Publication date |
---|---|
JPH09512213A (ja) | 1997-12-09 |
WO1995029022A1 (de) | 1995-11-02 |
CN1146170A (zh) | 1997-03-26 |
ATE164101T1 (de) | 1998-04-15 |
US5791399A (en) | 1998-08-11 |
DE4415212C1 (de) | 1995-11-09 |
RU2120836C1 (ru) | 1998-10-27 |
BR9507531A (pt) | 1997-09-02 |
EP0758277B1 (de) | 1998-03-18 |
AU2134695A (en) | 1995-11-16 |
ZA953359B (en) | 1996-04-12 |
CA2188938A1 (en) | 1995-11-02 |
AU681022B2 (en) | 1997-08-14 |
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