EP1060046A1 - Verfahren und einrichtung zur durchbruchfrüherkennung in einer stranggussanlage - Google Patents
Verfahren und einrichtung zur durchbruchfrüherkennung in einer stranggussanlageInfo
- Publication number
- EP1060046A1 EP1060046A1 EP99916748A EP99916748A EP1060046A1 EP 1060046 A1 EP1060046 A1 EP 1060046A1 EP 99916748 A EP99916748 A EP 99916748A EP 99916748 A EP99916748 A EP 99916748A EP 1060046 A1 EP1060046 A1 EP 1060046A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- temperature
- mold
- early detection
- measurement
- breakthrough
- 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
- B22D11/16—Controlling or regulating processes or operations
Definitions
- the invention relates to a method and a device for early breakthrough detection in a continuous casting installation, in which liquid metal is poured into a mold and pulled out of the mold in the form of a strand, the temperature of the mold being measured.
- Early breakthrough detection is to be understood as early detection of breakthroughs in the initially liquid core of the strand through the solidified shell of the strand.
- Early detection of breakthrough in the sense of the invention is, however, basically also to be understood as the detection of defects in the strand which can lead to breakthroughs.
- the object of the invention is to improve the known breakthrough early detection.
- FIG. 1 shows a continuous casting plant
- FIG. 2 shows a mold
- FIG. 3 shows the arrangement of temperature sensors, shown on the basis of a "developed" mold
- FIG. 4 shows a known visualization of measured temperature values
- FIG. 5 shows the temperature over time and place.
- FIG. 1 shows a continuous continuous casting plant. Shown are a ladle 4, a tundish 3, a mold 2 with temperature sensors 8 for temperature detection, a strand 1, guide rollers 5, a cutting device 6 and a slab 7. The arrangement of the temperature sensors 8 on the mold 2 is illustrated in FIG Temperature sensors 8 are connected via a data line 11 to an evaluation device 10 and a display 9 for displaying the temperature over time and place.
- thermocouples As temperature sensors come e.g. advantageously thermocouples in question.
- a bar display according to FIG. 4 is known for visualizing the temperature Xi.
- the temperature is displayed at the current time for each tempera ⁇ tursensor a bar graph, so the actual measured values.
- the basic idea of the visualization method proposed according to the invention lies in the simultaneous representation of location NT, temperature ⁇ ⁇ and time t, as is shown in FIG. 5 in an exemplary representation.
- a visualization according to FIG. 5 is provided for each of the two temperature sensor rows from FIG. 3:
- the temperatures are represented in a particularly advantageous manner by different colors. It is particularly advantageous not to allow continuous color differences, but rather to assign certain temperature ranges to a specific color. For reasons of representation in black and white, the colors in FIG. 5 are represented by different hatching. Elements of the same color represent areas of the same temperature. ⁇ 5 is a higher temperature than ⁇ _, ⁇ _ is a higher temperature than ⁇ 3 , ⁇ 3 is a higher temperature than ⁇ 2 and ⁇ 2 is a higher temperature than ⁇ ⁇ .
- the connecting lines 12, 13, 14, 15, 16 between the same color 4 gene, adjacent areas, so-called isochromes correspond to lines of the same temperature, ie so-called isotherms. Vertical lines, ie vertical Isochro ⁇ men are to be interpreted as undisturbed steady-state operation of the continuous casting plant.
- characteristic isochromes are formed which can be easily recognized by the operator of a continuous casting plant in this form of visualization.
- the pattern of isochromes 12 and 16 indicated in FIG. 5 (top left) shows an area in which a defect has formed at an elevated temperature, as is characteristic of adhesives. The temperature is highest inside the time / place distribution and drops towards the edges.
- a reversed temperature gradient in FIG. 5 shows a pattern of the isochromes 13, 14, 15 with a lower temperature on the inside, as occurs in the case of cracks.
- FIG. 5 is shown in an embodiment of the invention on the display 9.
- the invention is also particularly advantageous for automatically recognizing expected defects in the strand which can lead to a breakdown.
- the representation according to FIG. 6 is not shown on a display, but rather is fed to an automatic pattern recognition which emits an alarm when a significant fault is identified.
- the pattern recognition is implemented particularly advantageously on an evaluation device 10. It is also particularly advantageous to simultaneously use a pattern recognition on an evaluation device 10 and a graphical representation. 5 position, as exemplified in FIG 5, to be shown on a display 9.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19808998 | 1998-03-03 | ||
DE19808998A DE19808998B4 (de) | 1998-03-03 | 1998-03-03 | Verfahren und Einrichtung zur Durchbruchfrüherkennung in einer Stranggußanlage |
PCT/DE1999/000445 WO1999044772A1 (de) | 1998-03-03 | 1999-02-18 | Verfahren und einrichtung zur durchbruchfrüherkennung in einer stranggussanlage |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1060046A1 true EP1060046A1 (de) | 2000-12-20 |
EP1060046B1 EP1060046B1 (de) | 2002-07-03 |
Family
ID=7859539
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99916748A Revoked EP1060046B1 (de) | 1998-03-03 | 1999-02-18 | Verfahren und einrichtung zur durchbruchfrüherkennung in einer stranggussanlage |
Country Status (5)
Country | Link |
---|---|
US (1) | US20030150584A1 (de) |
EP (1) | EP1060046B1 (de) |
AT (1) | ATE219978T1 (de) |
DE (2) | DE19808998B4 (de) |
WO (1) | WO1999044772A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8162030B2 (en) | 2008-06-25 | 2012-04-24 | Sms Siemag Aktiengesellschaft | Mold for casting metal |
US8939191B2 (en) | 2008-07-10 | 2015-01-27 | Sms Siemag Aktiengesellschaft | Temperature measurement in a chill mold by a fiber optic measurement method |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10312923B8 (de) * | 2003-03-22 | 2005-07-14 | Sms Demag Ag | Verfahren zum Bestimmen der Mess-Temperaturen in Stranggießkokillen und Stranggießkokille selbst |
CN100402190C (zh) * | 2005-11-03 | 2008-07-16 | 上海梅山钢铁股份有限公司 | 一种连铸坯表面目标温度监控分析方法及其装置 |
ITVI20080259A1 (it) * | 2008-11-04 | 2010-05-05 | Ieco S R L | Forno a colata continua |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3244903A1 (de) * | 1982-12-04 | 1984-06-07 | László Dipl.-Phys. 4190 Kleve Körtvélyessy | Schnelle thermoelement-niveauregulierung |
US5020585A (en) * | 1989-03-20 | 1991-06-04 | Inland Steel Company | Break-out detection in continuous casting |
JPH0722811B2 (ja) * | 1990-11-02 | 1995-03-15 | 新日本製鐵株式会社 | 連続鋳造の拘束性ブレークアウト予知方法 |
WO1996031304A1 (de) * | 1995-04-03 | 1996-10-10 | Siemens Aktiengesellschaft | Einrichtung zur durchbruch-früherkennung beim stranggiessen |
-
1998
- 1998-03-03 DE DE19808998A patent/DE19808998B4/de not_active Expired - Fee Related
-
1999
- 1999-02-18 EP EP99916748A patent/EP1060046B1/de not_active Revoked
- 1999-02-18 DE DE59901923T patent/DE59901923D1/de not_active Revoked
- 1999-02-18 US US09/623,609 patent/US20030150584A1/en not_active Abandoned
- 1999-02-18 WO PCT/DE1999/000445 patent/WO1999044772A1/de not_active Application Discontinuation
- 1999-02-18 AT AT99916748T patent/ATE219978T1/de not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9944772A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8162030B2 (en) | 2008-06-25 | 2012-04-24 | Sms Siemag Aktiengesellschaft | Mold for casting metal |
US8939191B2 (en) | 2008-07-10 | 2015-01-27 | Sms Siemag Aktiengesellschaft | Temperature measurement in a chill mold by a fiber optic measurement method |
Also Published As
Publication number | Publication date |
---|---|
US20030150584A1 (en) | 2003-08-14 |
WO1999044772A1 (de) | 1999-09-10 |
DE19808998B4 (de) | 2007-12-06 |
EP1060046B1 (de) | 2002-07-03 |
DE19808998A1 (de) | 1999-09-09 |
ATE219978T1 (de) | 2002-07-15 |
DE59901923D1 (de) | 2002-08-08 |
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