EP1929287A1 - Dispositif de controle a ultrasons de materiau a laminer chaud - Google Patents

Dispositif de controle a ultrasons de materiau a laminer chaud

Info

Publication number
EP1929287A1
EP1929287A1 EP06775752A EP06775752A EP1929287A1 EP 1929287 A1 EP1929287 A1 EP 1929287A1 EP 06775752 A EP06775752 A EP 06775752A EP 06775752 A EP06775752 A EP 06775752A EP 1929287 A1 EP1929287 A1 EP 1929287A1
Authority
EP
European Patent Office
Prior art keywords
rolling
rollers
nip
ultrasonic
rolled material
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.)
Withdrawn
Application number
EP06775752A
Other languages
German (de)
English (en)
Inventor
Axel STÜBER
Peter VAN HÜLLEN
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.)
Georgsmarienhuette GmbH
Original Assignee
Georgsmarienhuette GmbH
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 Georgsmarienhuette GmbH filed Critical Georgsmarienhuette GmbH
Publication of EP1929287A1 publication Critical patent/EP1929287A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/228—Details, e.g. general constructional or apparatus details related to high temperature conditions
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04—Analysing solids
    • G01N29/043—Analysing solids in the interior, e.g. by shear waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04—Analysing solids
    • G01N29/11—Analysing solids by measuring attenuation of acoustic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
    • G01N29/262—Arrangements for orientation or scanning by relative movement of the head and the sensor by electronic orientation or focusing, e.g. with phased arrays
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
    • G01N29/27—Arrangements for orientation or scanning by relative movement of the head and the sensor by moving the material relative to a stationary sensor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/10—Number of transducers
    • G01N2291/106—Number of transducers one or more transducer arrays
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/26—Scanned objects
    • G01N2291/263—Surfaces
    • G01N2291/2632—Surfaces flat

Definitions

  • the invention relates to a device for ultrasonic testing of hot rolled material during the rolling process in one of a plurality of successively arranged rolling stands of a rolling train consisting of at least two, a nip between letting rollers, the rollers are assigned ultrasonic probes, which are arranged so that parts of Roller body itself serve as a passage for the ultrasonic waves to be tested rolling in the nip.
  • Such a device is known for example from DE 199 15 203 C2.
  • the device presented there is one in a rolling mill, which is positioned in the rolling process in front of the finishing stand. That is, here the steel is already almost completely rolled out into its desired shape.
  • the reflecting surface in the beam is getting smaller and the signal getting weaker.
  • Kocksblock (so-called Kocksblock) arranged between them
  • the curvature but also ensures a dispersion of the energy of the ultrasound beam at all points where the beam does not meet perpendicular to the caliber.
  • These reflected components can cause problems as phantom echoes in the test. It is sometimes very difficult to prevent this, if the angle ratios are unfavorable.
  • a further disadvantage is the small roller diameter, which defocuses the ultrasonic beam relatively strongly in the longitudinal direction. This is essentially the transition from the test head to the roller body, which is ensured by coupling water.
  • Another significant disadvantage of the known device is the limitation of the test dimension. This means that the delay line in the through-roller must be at least as long that the time for the passage through the Lead-in distance is greater than that which is required for the passage of the rolling stock.
  • the invention is therefore based on the object to perform a device of the type mentioned above so that safer test results can be achieved with much less effort.
  • the invention solves this problem according to the characterizing part of claim 1, characterized in that the rollers provided with the ultrasonic probes are adjustable, have a straight cross-section and a diameter which measures a multiple of the nip width, so that a large rolling angle (. ⁇ . ) is present, and these rollers are arranged in one of the first rolling mills of the rolling train.
  • the testing in a rolling stand is done relatively early in the rolling process, so that the elongation of the inclusions in the rolling material is comparatively low, but the deformation is sufficient to have dissolved the cast structure and compacted porosities.
  • the dissolution of the cast structure is required to perform an ultrasonic test with a frequency above 2 MHz. Sufficiently small inclusions can only be found from this "frequency.”
  • Compaction of the core of the roll core is required to prevent discarding of the involved roll core, as the ultrasonic testing does not distinguish between porosity and containment.
  • the profile of the rolling material also becomes square or rectangular during the forming process, whereby a large forming area and thus also a large area of sound can be provided by the large diameter of the rolls. Due to the large diameter is also achieved that the defocusing is limited and a maximum of energy can be introduced into the rolling stock.
  • the rolling stand is designed to deform to ensure sufficient contact between the rolls and the rolled material.
  • the contact zone increases the higher the degree of deformation. This also helps to increase the energy input.
  • so-called cantilever rollers are used as rollers, in which the rolling jacket projects beyond the rolling disk at least on one side.
  • Roller mantle a favorable mounting location for the
  • Ultrasonic probes namely according to claim 3 on the roll axis facing side of the rolling shell.
  • the rollers do not need to be reworked or specially made, since the arrangement of the ultrasonic probes in the cantilever rollers can be easily aligned with the rolling stock.
  • the use of so-called group radiators is advantageously provided.
  • the inventively preferred cantilever rolls can be used over the entire size range of production, since they only have to be made without a new caliber must be used (see claim 1).
  • group radiators can be taken into account by corresponding shutdowns and connections within the phased array with a clear leadership of the roll material the dimension of the rolling stock.
  • the main advantage of the phased array is the ability to pan the ultrasound beam to optimally view inclusions, as they often have acoustically anisotropic properties. By pivoting the sound beam, inclusions close to the edge can also be detected.
  • descaling is performed prior to testing to remove the coarse scale formed after rough rolling.
  • the rolling stock is clearly fixed in position by means of rolling fittings or by upstream and downstream rolling stands, in order to adjust the test accordingly.
  • the invention is illustrated below with reference to drawings.
  • rollers 3 each have a rolling disk 6 and a laterally outwardly projecting annular projection 7. Between these protruding areas 7 of the rollers 3 is the rolled material 8 to be tested.
  • the actual testing device 9 is arranged on the side of the projection 7 facing the shaft 5.
  • FIG. 3 shows an alternative roller arrangement, in which the array radiators 9 are likewise arranged on the side of the projection 7 facing the axis 4.
  • the ultrasonic probes 9 are arranged so that they can pass through the rolled material 8 obliquely after irradiation of the projection 7.
  • a vertical transmission is possible. This design should allow even better scanning of the near-surface zone.
  • test surface can be optimally prepared by the roll geometry and that at a point in the rolling process at which the inclusions (ie the errors to be detected within the rolling material) are still stretched quite little when irradiating the rolled material So give a clear signal.

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Acoustics & Sound (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

L'invention concerne un dispositif de contrôle à ultrasons de matériau à laminer chaud au cours du processus de laminage dans une cage de laminoir d'un train de laminoir, appartenant à une pluralité de cages de laminoir disposées les unes derrière les autres. Le dispositif selon l'invention est composé d'au moins deux cylindres conservant une fente de laminoir. Des têtes de contrôle à ultrasons sont affectées aux cylindres et disposées de telle manière que des parties du corps de cylindre servent de couloir de passage pour les ondes à ultrasons, vers le matériau à laminer à contrôler dans la fente de laminoir. Le dispositif selon l'invention est caractérisé en ce que les cylindres pourvus de têtes de contrôle à ultrasons peuvent être réglés, présentent un profil transversal droit et un diamètre correspondant à un multiple de la largeur de la fente de laminoir, de telle manière qu'on obtient un grand angle de laminoir (a) et que les cylindres sont disposés dans une des premières cages de laminoir du train de laminoir.
EP06775752A 2005-09-20 2006-07-27 Dispositif de controle a ultrasons de materiau a laminer chaud Withdrawn EP1929287A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005044760A DE102005044760B3 (de) 2005-09-20 2005-09-20 Vorrichtung zur Ultraschallprüfung von heißem Walzmaterial
PCT/DE2006/001298 WO2007033633A1 (fr) 2005-09-20 2006-07-27 Dispositif de controle a ultrasons de materiau a laminer chaud

Publications (1)

Publication Number Publication Date
EP1929287A1 true EP1929287A1 (fr) 2008-06-11

Family

ID=37622512

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06775752A Withdrawn EP1929287A1 (fr) 2005-09-20 2006-07-27 Dispositif de controle a ultrasons de materiau a laminer chaud

Country Status (14)

Country Link
US (1) US7987719B2 (fr)
EP (1) EP1929287A1 (fr)
JP (1) JP4819900B2 (fr)
KR (1) KR101135769B1 (fr)
CN (1) CN101268362B (fr)
AR (1) AR054940A1 (fr)
BR (1) BRPI0616373A2 (fr)
CA (1) CA2622590C (fr)
DE (1) DE102005044760B3 (fr)
RU (1) RU2383015C2 (fr)
TW (1) TWI315789B (fr)
UA (1) UA93520C2 (fr)
WO (1) WO2007033633A1 (fr)
ZA (1) ZA200801866B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO2755812T3 (fr) 2013-03-12 2018-06-30
DE102013107560B4 (de) * 2013-07-16 2023-11-02 Althaus Engineering Verfahren und Vorrichtung zum Prüfen von Wälzkörpern mittels Ultraschall
DE102013223083A1 (de) * 2013-11-13 2015-05-13 Sms Siemag Ag Verfahren und Vorrichtung zur kontaktlosen Überprüfung der Beschaffenheit eines metallurgischen Gießproduktes
FI20145157L (fi) 2014-02-17 2015-08-18 Andritz Sundwig Gmbh Pitkänomaisten metallimateriaalien valmistusprosessien aikana syntyneiden vikojen indikointi akustisella emissiolla
CN105092700B (zh) * 2015-06-23 2018-06-19 邯钢集团邯宝钢铁有限公司 一种轧辊的冷作硬化接触疲劳显微裂纹检测方法

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DE1473682A1 (de) * 1965-12-07 1970-02-19 Automationstrust Fuer Ind Elek Verfahren zur zerstoerungsfreien Pruefung von heissem Walzgut
US3423993A (en) 1966-07-20 1969-01-28 Parametrics Inc Rolling ultrasonic transducer
DE2106891B2 (de) * 1971-02-13 1972-11-30 SKF Kugellagerfabnken GmbH, 8720 Schweinfurt Antriebsvorrichtung fuer kugeln zu deren zerstoerungsfreien pruefung
GB1585648A (en) * 1976-12-28 1981-03-11 Sumitomo Electric Industries Apparatus for detecting flaws in castings
JPS5383672A (en) * 1976-12-28 1978-07-24 Sumitomo Electric Ind Ltd Method and apparatus for detecting inside defect of continuous
GB2128739B (en) * 1982-09-15 1986-05-21 Schlumberger Electronics Ultrasonic inspection devices
US5535628A (en) * 1994-11-14 1996-07-16 Rohrback Cosasco Systems, Inc. Ultrasonic scanner head and method
JPH08290217A (ja) * 1995-04-18 1996-11-05 Kawasaki Steel Corp 形鋼のローラ矯正方法及び装置
JPH1183814A (ja) * 1997-09-09 1999-03-26 Sumitomo Metal Ind Ltd 鋳片の凝固状態検出方法及びその装置
KR100390101B1 (ko) * 1997-10-31 2003-07-04 가와사키 세이테츠 가부시키가이샤 원기둥체 표면의 초음파 탐상방법과 그 탐상장치 및 이를이용한 롤의 연삭방법
DE59914412D1 (de) * 1998-07-24 2007-08-30 Georgsmarienhuette Gmbh Verfahren und Vorrichtung zur zerstörungsfreien Ultraschallprüfung von zu walzendem, noch gut verformbarem Stahl auf Innenfehler
DE19915203C2 (de) * 1998-07-24 2000-11-23 Georgsmarienhuette Gmbh Verfahren und Vorrichtung zur zerstörungsfreien Prüfung von zu walzendem, noch gut verformbarem Stahl auf Innenfehler
DE19955136A1 (de) * 1999-11-17 2001-05-31 Sms Demag Ag Verfahren und Vorrichtung zur berührungslosen online Heißwanddickenmessung an Rohren
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See references of WO2007033633A1 *

Also Published As

Publication number Publication date
KR20080069573A (ko) 2008-07-28
WO2007033633A1 (fr) 2007-03-29
US7987719B2 (en) 2011-08-02
CN101268362B (zh) 2011-12-14
JP4819900B2 (ja) 2011-11-24
AR054940A1 (es) 2007-07-25
US20090260439A1 (en) 2009-10-22
CA2622590A1 (fr) 2007-03-29
ZA200801866B (en) 2009-06-24
RU2383015C2 (ru) 2010-02-27
JP2009509147A (ja) 2009-03-05
BRPI0616373A2 (pt) 2011-06-21
UA93520C2 (ru) 2011-02-25
TW200722749A (en) 2007-06-16
CN101268362A (zh) 2008-09-17
CA2622590C (fr) 2011-12-20
DE102005044760B3 (de) 2007-04-12
RU2008115439A (ru) 2009-10-27
KR101135769B1 (ko) 2012-04-16
TWI315789B (en) 2009-10-11

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