EP0988908B1 - Verfahren zur Lokalisierung von Elementkonzentrationen in einem Gussstrang und Anordnung zur Durchführung des Verfahrens - Google Patents

Verfahren zur Lokalisierung von Elementkonzentrationen in einem Gussstrang und Anordnung zur Durchführung des Verfahrens Download PDF

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Publication number
EP0988908B1
EP0988908B1 EP99118339A EP99118339A EP0988908B1 EP 0988908 B1 EP0988908 B1 EP 0988908B1 EP 99118339 A EP99118339 A EP 99118339A EP 99118339 A EP99118339 A EP 99118339A EP 0988908 B1 EP0988908 B1 EP 0988908B1
Authority
EP
European Patent Office
Prior art keywords
test specimen
metal
computer
cast strand
strip
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
EP99118339A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0988908A1 (de
Inventor
Anwar Von Sroka
Hubertus Dr. Brüning
Hartmut Dipl.-Ing. Oelmann
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.)
KME Special Products GmbH and Co KG
Original Assignee
KM Europa Metal AG
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Filing date
Publication date
Application filed by KM Europa Metal AG filed Critical KM Europa Metal AG
Publication of EP0988908A1 publication Critical patent/EP0988908A1/de
Application granted granted Critical
Publication of EP0988908B1 publication Critical patent/EP0988908B1/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
    • B22D11/16—Controlling or regulating processes or operations

Definitions

  • the invention relates on the one hand to a method for localizing element concentrations in the edge areas of a horizontally manufactured cast strand alloyed non-ferrous metals.
  • the invention is directed to one Device for performing the method.
  • the thickness of the removed surface layer has so far been based on empirical values determined that were sufficient for the rule. Now, however, are forming when casting horizontally under certain conditions tin concentrations that protrude beyond the normal dimension into the cast strand at certain points. root cause this is mostly due to wanted or unwanted changes in the cooling conditions. However, these anomalies can only be identified after several work steps rolled and polished surfaces in the form of linear light yellow stripes. These batches were then usually scrapped.
  • JP-A-59 159 067 describes a method for quality testing a sample from a cast strand known. In this process, a piece of the strand is first cut to length, treated with acid and then observed the crystal structure of the surface. If segregation is found, the corresponding layer can go off-hook be completely removed.
  • the invention is based on the object Method for localizing element concentrations in the marginal areas of a horizontally manufactured cast strand from alloyed non-ferrous metals as well as a Show device for performing the method in which both wanted and unwanted changes in cooling conditions as well regardless an optional local homogenization cooling element concentrations can be reliably recognized.
  • the cast strand at the beginning and end of a coil to be wound a length section removed as a test specimen and from this specimen in the transverse direction a surface layer with a certain thickness removed in strips.
  • the surface layer can be removed by milling, Grinding or another type of mechanical processing. It is important here that no lubricants are added during acceptance become. The acceptance takes place over the entire length of the test specimen and thus the width of the cast strand.
  • the method according to the invention therefore makes it possible to determine exactly how much Material must be removed from the cast strand so that further processing a flawless starting material can be made available.
  • This device has a sensor that determines the position of the test specimen Metal acquisition unit and a spectral analysis head, which is relative to the test specimen relocatable and under the influence of a metal acceptance and analysis control unit are provided, on the one hand via a programmable logic controller and on the other hand is coupled to a computer via a spectrometer.
  • the Computer has a screen and a printer.
  • the test specimen removed from the cast strand is fixed locally.
  • the sensor feels then the surface of the test specimen and the metal removal unit, in particular a milling head with milling cutter, so that one of these is uniformly thick Surface layer can be removed.
  • the extension in Transverse direction determined.
  • the sensor is under the influence of a Metal acceptance and analysis control unit with a programmable logic controller Control is coupled.
  • the control is in turn connected to a computer connected, via the control and the metal acceptance and analysis control unit positioned the sensor step by step and also all safety chains and functions of the device checked.
  • a predetermined layer thickness is achieved with the metal removal unit removed like a strip, for example 0.6 mm, so that now a bare surface is present.
  • the spectral analysis head which is now in linear sequence of points determines the metal composition, the spectrometer also transmits the concentration to the computer.
  • the computer collects all positioning and analysis data and also the analysis data corrected with reference to the calibration values, the analysis and Positioning data transferred into a diagram, which is then online on the screen of the computer is displayed. It is clearly visible here where, if necessary anomaly is exceeded. Does the calculator set one such an anomaly, he immediately determines that the metal take-off unit is another Layer from the length section, but this time in a smaller one Thickness, for example with 0.2 mm. This can take place over the entire extension Transverse direction of the longitudinal section take place or only where the excessive Concentration was determined.
  • a spectral analysis is carried out again and determined whether the increased concentration is still present or whether the element concentrations are within the limit values. Lie if they are within the limits, the anomaly is well defined, so then the values for machining the cast strand are also fixed. Is the anomaly still present, another thin layer of e.g. 0.2 mm removed and the specimen was then examined by spectral analysis.
  • the metal acceptance and analysis control unit with the spectrometer is connected via optical fibers.
  • 1 is an arrangement for localizing element concentrations rectangular in the edge areas of a horizontally manufactured cast strand Cross section made of a copper-tin alloy (CuSn4).
  • the arrangement 1 comprises a sample table 2, on which a short length section of the cast strand in Shape of a test specimen 3 is fixable locally.
  • a short length section of the cast strand in Shape of a test specimen 3 is fixable locally.
  • the length L of the cast strand Specimen 3 dimensioned significantly smaller than the width B, which is also the Corresponds to the width of the cast strand.
  • the test specimen is 3 also fixed locally in the longitudinal direction of the sample table 2.
  • a metal removal unit 4 in the form of a milling head with milling cutter 5 relocatable.
  • the milling cutter 5 can be moved downwards out of the metal removal unit 4.
  • the metal removal unit 4 can be displaced transversely to the sample table 2.
  • the metal removal unit 4 is shown in FIG Way under the influence of a metal take-off integrated in the sample table 2 and Analysis control unit 6.
  • the metal take-off unit 4 is assigned a sensor 7, via which the position of the Test specimen 3 on the sample table 2 and its width B in the transverse direction is determined.
  • the metal acceptance unit 4 under the influence of the metal acceptance and analysis control unit 6 stands, it is also via a line 8 with a programmable logic controller Controller 9 coupled, which in turn via a line 10 is coupled to a computer 11 with screen 12 and printer 13.
  • a spectral analysis head 14 is displaceable. This too is under the influence of the metal acceptance and analysis control unit 6, the in turn via optical fiber 15 with a spectrometer 16 and this in turn is coupled to the computer 11 via a line 17.
  • the controller 9 and the control unit are used first 6 the sensor 7 is shifted over the test specimen 3, the position and scans its width B.
  • the controller 9 uses the values reported to the controller then the metal removal unit 4 in such a way that the milling cutter 5 is removed from the test specimen 3 in Width B is a surface layer with a depth of 0.6 mm in strips milled off (see also Figure 2).
  • Spectral analysis head 14 moved in the longitudinal direction of the milled strip 18, wherein a punctiform spectral analysis of the metal composition of the Test specimen 3 in a linear succession 19 (focal spots of the spectrometer) is carried out.
  • the spectrometer receives 16 instructions from Computer 11, which alloy is to be analyzed and when it has to drop.
  • the Spectrometer 16 determines the composition by emission spectrometry and reports the concentration to the computer 11.
  • the arrows PF indicate the flow of information.
  • the computer 11 collects the positioning data and analysis data and corrects them possibly referring to the calibration values. He then transmits the analysis and positioning data in a diagram based on Figure 3 oneline screen 12 is shown.
  • the width B of the test specimen is on the abscissa A 3 in millimeters and on the ordinate O the tin concentration in percent shown.
  • the permissible tin concentration is between 3.5 and 4.5 Percent.
  • the spectrometer 16 has a milling depth of approx. 0.6 mm from position 375 to 425 mm above the upper limit OG tin concentration 20 going beyond determined, transmitted to the computer 11 and shown in Figure 3.
  • the metal removal unit 4 is again in the longitudinal direction of the strip 18 moves, with a further 0.2 mm material removed.
  • the spectral analysis head 14 is then moved in the longitudinal direction of the strip 18 and determined the metal composition.
  • this analysis also shows with a milling depth of 0.8 mm now an increased tin concentration 20 in the range between 375 and 425 mm. However, it can also be seen that the tin concentration 20 has become narrower at the base.
  • the metal take-off unit then becomes 4 moved again in the longitudinal direction of the strip 18 and one another layer of 0.2 mm removed.
  • the spectral analysis head 14 is again in the longitudinal direction of the Strip 18 moves and the current metal composition determined.
  • the total milling depth now is approximately 1 mm still an increased tin concentration between the positions 375 to 425 mm 20 available.
  • FIG. 5 shows that the tin concentration 20 at the Base has become significantly narrower.
  • the metal removal unit 4 is again in the longitudinal direction of the strip 18 shifted and with the cutter 5 another layer with a thickness of 0.2 mm decreased.
  • the spectral analysis head 14 is then moved in the longitudinal direction of the strip 18 and determined the metal composition.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Investigating And Analyzing Materials By Characteristic Methods (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Continuous Casting (AREA)
  • Inorganic Fibers (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
EP99118339A 1998-09-22 1999-09-16 Verfahren zur Lokalisierung von Elementkonzentrationen in einem Gussstrang und Anordnung zur Durchführung des Verfahrens Expired - Lifetime EP0988908B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843290 1998-09-22
DE19843290A DE19843290A1 (de) 1998-09-22 1998-09-22 Verfahren zur Lokalisierung von Elementkonzentrationen in einem Gußstrang und Vorrichtung des Verfahrens

Publications (2)

Publication Number Publication Date
EP0988908A1 EP0988908A1 (de) 2000-03-29
EP0988908B1 true EP0988908B1 (de) 2004-04-07

Family

ID=7881740

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99118339A Expired - Lifetime EP0988908B1 (de) 1998-09-22 1999-09-16 Verfahren zur Lokalisierung von Elementkonzentrationen in einem Gussstrang und Anordnung zur Durchführung des Verfahrens

Country Status (13)

Country Link
US (1) US6411379B1 (zh)
EP (1) EP0988908B1 (zh)
KR (1) KR100681803B1 (zh)
CN (1) CN1191899C (zh)
AT (1) ATE263645T1 (zh)
DE (2) DE19843290A1 (zh)
DK (1) DK0988908T3 (zh)
ES (1) ES2218920T3 (zh)
HK (1) HK1025279A1 (zh)
HU (1) HU223998B1 (zh)
PL (1) PL190825B1 (zh)
PT (1) PT988908E (zh)
TW (1) TW424020B (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005022790A1 (de) 2005-05-12 2006-11-16 Henkel Kgaa Mittel zum Färben von keratinhaltigen Fasern
CN102747216B (zh) * 2011-04-20 2013-10-30 宝山钢铁股份有限公司 一种控制加热炉内钢坯间隙的方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5972055A (ja) * 1982-10-18 1984-04-23 Mitsubishi Electric Corp 金属材料品質検査法
JPS59159067A (ja) * 1983-03-02 1984-09-08 Mitsubishi Electric Corp リン青銅の品質検査法
US4692875A (en) * 1984-06-22 1987-09-08 The United States Of America As Represented By The Secretary Of The Interior Metal alloy identifier
JPH0688114B2 (ja) * 1984-07-17 1994-11-09 新日本製鐵株式会社 連鋳片に発生する中心偏析の最大成分量の測定方法
JPS6141953A (ja) * 1984-08-06 1986-02-28 Mitsubishi Electric Corp リン青銅の鋳塊品質検出査装置
US4783471A (en) * 1985-07-02 1988-11-08 Merrell Dow Pharmaceuticals Inc. N-aralkyl piperidine methanol derivatives and the uses thereof
JPH07113142B2 (ja) * 1987-02-10 1995-12-06 三菱電機株式会社 りん青銅薄板の製造方法
JP2678797B2 (ja) * 1989-10-13 1997-11-17 日本軽金属株式会社 発光分光分析用標準試料
DE4103963A1 (de) * 1991-02-09 1992-08-13 Kabelmetal Ag Verfahren zum kontinuierlichen stranggiessen von kupferlegierungen
SE515080C2 (sv) * 1996-03-06 2001-06-05 Avesta Sheffield Ab Robot för spektrometeranalysering av metallprover och ett sätt att utföra leveranskontroll av metalliska produkter

Also Published As

Publication number Publication date
PL190825B1 (pl) 2006-02-28
HK1025279A1 (en) 2000-11-10
KR100681803B1 (ko) 2007-02-15
US6411379B1 (en) 2002-06-25
PL335540A1 (en) 2000-03-27
TW424020B (en) 2001-03-01
CN1248502A (zh) 2000-03-29
DE59909095D1 (de) 2004-05-13
ES2218920T3 (es) 2004-11-16
KR20000023337A (ko) 2000-04-25
HUP9903204A2 (hu) 2001-12-28
EP0988908A1 (de) 2000-03-29
HU9903204D0 (en) 1999-11-29
DE19843290A1 (de) 2000-03-23
DK0988908T3 (da) 2004-08-09
CN1191899C (zh) 2005-03-09
PT988908E (pt) 2004-08-31
HU223998B1 (hu) 2005-04-28
ATE263645T1 (de) 2004-04-15
HUP9903204A3 (en) 2002-02-28

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