ES2186936T3 - Metodo para medir las variaciones en la seccion de una barra laminada. - Google Patents

Metodo para medir las variaciones en la seccion de una barra laminada.

Info

Publication number
ES2186936T3
ES2186936T3 ES98104683T ES98104683T ES2186936T3 ES 2186936 T3 ES2186936 T3 ES 2186936T3 ES 98104683 T ES98104683 T ES 98104683T ES 98104683 T ES98104683 T ES 98104683T ES 2186936 T3 ES2186936 T3 ES 2186936T3
Authority
ES
Spain
Prior art keywords
bar
section
transit
variations
magnetic field
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
ES98104683T
Other languages
English (en)
Inventor
Vedova Ferruccio Della
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.)
Danieli Automation SpA
Original Assignee
Danieli Automation SpA
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 Danieli Automation SpA filed Critical Danieli Automation SpA
Application granted granted Critical
Publication of ES2186936T3 publication Critical patent/ES2186936T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/12—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring diameters
    • G01B7/125—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring diameters of objects while moving
    • 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
    • B21B38/04—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring thickness, width, diameter or other transverse dimensions of the product

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Paper (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Control Of Metal Rolling (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

LA INVENCION SE REFIERE A UN METODO PARA MEDIR LAS VARIACIONES DE SECCION DE UNA BARRA LAMINADA EN CALIENTE (12) DURANTE EL PROCESO. EL METODO INCLUYE LA GENERACION DE UN CAMPO MAGNETICO DE FRECUENCIA VARIABLE POR AL MENOS UN GENERADOR (14) QUE DEFINE UN ESPACIO INTERIOR (214) PARA EL PASO DE LA BARRA (12). LAS VARIACIONES DE SECCION DE LA BARRA (12) EN TRANSITO SE MIDEN POR MEDIO DE UN RECEPTOR (15) ADECUADO PARA CONTROLAR LAS PERTURBACIONES INDUCIDAS EN EL CAMPO MAGNETICO POR LAS VARIACIONES DE AREA DE LA SECCION DE LA BARRA (12 EN TRANSITO. EL RECEPTOR (15) ESTA DISPUESTO COAXIALMENTE Y DENTRO DEL GENERADOR (14) Y DEFINE EN EL INTERIOR DEL MISMO UNA SUPERFICIE PARA EL PASO DE LA BARRA (12) QUE TIENE UNA SECCION TRANSVERSAL DE (A SUB,S ). EL VALOR (F 0 ) DE LA FRECUENCIA DEL CAMPO MAGNET ICO GENERADO POR EL GENERADOR (14), ADECUADA PARA MINIMIZAR LA INFLUENCIA DE LA TEMPERATURA REAL DE LA BARRA (12) SOBRE LA MEDICION, SE DEFINE POR LA FORMULA: DONDE - (A S ) ES EL AREA DE LA SECCION DE LASUPERFICIE DEFINIDA EN EL INTERIOR DEL RECEPTOR (15), - (F) ES EL FACTOR DE LLENADO DEFINIDO POR LA RELACION ENTRE EL AREA NOMINAL NORMAL DE LA SECCION DE LA BARRA (12) EN TRANSITO Y EL VALOR (A S ), - MI 0 ES LA PER MEABILIDAD DEL VACIO, - SI ES LA CONDUCTIVIDAD DEL MATERIAL DEL QUE SE COMPONE LA BARRA (12) A LA TEMPERATURA MEDIA DE LA MEDICION Y - DL 0 ES UN COEFICIENTE QUE ES UNA FUNCION DEL FACTOR DE LLENADO (F) Y QUE SE CALCULA CON LA FORMULA SIGUIENTE: DI 0 = A + BF P - C [1 + 1/(1 - F) Q ].
ES98104683T 1997-03-24 1998-03-16 Metodo para medir las variaciones en la seccion de una barra laminada. Expired - Lifetime ES2186936T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT97UD000052A IT1290736B1 (it) 1997-03-24 1997-03-24 Procedimento di misura delle variazioni di sezione di una barra laminata e relativo dispositivo

Publications (1)

Publication Number Publication Date
ES2186936T3 true ES2186936T3 (es) 2003-05-16

Family

ID=11422352

Family Applications (1)

Application Number Title Priority Date Filing Date
ES98104683T Expired - Lifetime ES2186936T3 (es) 1997-03-24 1998-03-16 Metodo para medir las variaciones en la seccion de una barra laminada.

Country Status (7)

Country Link
US (1) US6166537A (es)
EP (1) EP0873799B1 (es)
AT (1) ATE229383T1 (es)
CA (1) CA2232348C (es)
DE (1) DE69809998T2 (es)
ES (1) ES2186936T3 (es)
IT (1) IT1290736B1 (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9803506D0 (sv) * 1998-10-11 1998-10-11 Tyren Carl Method for measuring cross-section geometry based on AC signal skin-depth penetration
IT1400550B1 (it) * 2010-06-09 2013-06-11 Danieli Automation Spa Procedimento e dispositivo per il controllo dimensionale della sezione di un prodotto laminato.
GB2481482B (en) 2011-04-27 2012-06-20 Univ Manchester Improvements in sensors

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3056081A (en) * 1959-06-22 1962-09-25 Budd Co Electromagnetic testing
NL6616388A (es) * 1965-12-15 1967-06-16
DE2435338A1 (de) * 1974-07-23 1976-02-05 Foerster Friedrich Dr Verfahren zur analogen messung des querschnittes von draehten mit digitaler querschnittsanzeige sowie registrierung der prozentualen querschnittsaenderung
US4083002A (en) * 1976-02-17 1978-04-04 Allport John J Method and apparatus for measuring cross sectional area and weight per unit length of elongated, conductive material by magnetic field displacement
BE1004358A3 (fr) * 1989-06-22 1992-11-10 Halleux Benoit De Procede et dispositif de mesure de la section ou du diametre de produits cylindriques longs en materiaux conducteurs.

Also Published As

Publication number Publication date
ATE229383T1 (de) 2002-12-15
CA2232348C (en) 2006-10-31
DE69809998T2 (de) 2003-08-21
IT1290736B1 (it) 1998-12-10
EP0873799A1 (en) 1998-10-28
US6166537A (en) 2000-12-26
ITUD970052A1 (it) 1998-09-24
EP0873799B1 (en) 2002-12-11
DE69809998D1 (de) 2003-01-23
CA2232348A1 (en) 1998-09-24

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