GB1340218A - Pulverulent and slurry material measuring methods - Google Patents

Pulverulent and slurry material measuring methods

Info

Publication number
GB1340218A
GB1340218A GB3169971A GB3169971A GB1340218A GB 1340218 A GB1340218 A GB 1340218A GB 3169971 A GB3169971 A GB 3169971A GB 3169971 A GB3169971 A GB 3169971A GB 1340218 A GB1340218 A GB 1340218A
Authority
GB
United Kingdom
Prior art keywords
strip
coating
control
detector
steel 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
Application number
GB3169971A
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.)
British Steel Corp
Original Assignee
British Steel Corp
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 British Steel Corp filed Critical British Steel Corp
Publication of GB1340218A publication Critical patent/GB1340218A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D5/00—Control of dimensions of material
    • G05D5/02—Control of dimensions of material of thickness, e.g. of rolled material
    • G05D5/03—Control of dimensions of material of thickness, e.g. of rolled material characterised by the use of electric means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/12—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to conditions of ambient medium or target, e.g. humidity, temperature position or movement of the target relative to the spray apparatus
    • B05B12/126—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to conditions of ambient medium or target, e.g. humidity, temperature position or movement of the target relative to the spray apparatus responsive to target velocity, e.g. to relative velocity between spray apparatus and target
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
    • G01B11/0616—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material of coating
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
    • G01B11/0616—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material of coating
    • G01B11/0625—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material of coating with measurement of absorption or reflection

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

1340218 Measuring the characteristics of a coating or a surface BRITISH STEEL CORP 6 July 1971 [7 Aug 1970] 31699/71 Heading G1A [Also in Division G3] In an apparatus wherein pulverulent material (e.g. chromium powder) is distributed on a supporting surface (e.g. a steel strip) which has different reflection characteristics from the pulverulent material, a beam radiation is directed into the supporting surface with the pulverulent material and a detector receives the reflected light. The beam has an angle of impingement on the supporting surface within 60 degrees of the normal to the surface and rays reflected at an angle of less than 45 degrees from the direction of incident light are measured. The output of the detector may be used to control the thickness coating of the pulverulent material on the supporting surface. The invention makes use of a linear relationship between the coating weight, or the density per unit area, of the pulverulent material and the intensity of the reflected light, which exists between the two extremes (that is, the measurements due to no pulverized material at all on the steel strip and to the strip being opaque due to a complete coverage by the pulverized material). In one embodiment, Fig.1 a coil 14 of a steel strip is pulled over a coating drum 16 and passed through a measuring apparatus 34, a sintering furnace 28, and compaction rollers 30 on to a take up reel 32. The measuring apparatus includes a radiation source 36 and a detector 38 the detector's output being fed to a read out device and a control apparatus 42 which controls the line speed of the strip and the rate of powder deposition so as to control the line speed of the strip and the rate of powder deposition so as to control the coating weight, particle distribution and the like. In a further embodiment Fig.2 (not shown) a bonding agent is directed from a tank on to both surfaces of the steel strip prior to both surfaces being coated with the pulverized material a measuring apparatus being placed adjacent each surface so as to monitor the coating of the steel strip for control purposes. A further set of sources and detectors may be included to monitor a further coating of both sides of one strip. In a further embodiment a number of powder blowers are spaced laterally across the strip to coat the strip and a corresponding number of detectors and sources are placed above the surfaces to monitor and control the blowers. The description includes a discussion involving graphs on maximizing the efficiency of the invention and includes an electronic circuit for the detectors.
GB3169971A 1970-08-07 1971-07-06 Pulverulent and slurry material measuring methods Expired GB1340218A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US6201970A 1970-08-07 1970-08-07

Publications (1)

Publication Number Publication Date
GB1340218A true GB1340218A (en) 1973-12-12

Family

ID=22039692

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3169971A Expired GB1340218A (en) 1970-08-07 1971-07-06 Pulverulent and slurry material measuring methods

Country Status (3)

Country Link
US (1) US3801349A (en)
CA (1) CA949744A (en)
GB (1) GB1340218A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2206963A (en) * 1987-06-09 1989-01-18 Us Commerce Determining surface density of coal or rock dust
EP0452665A2 (en) * 1990-04-20 1991-10-23 Electronic Systems S.P.A. Device and scanning method for measuring the thickness of opaque or transparent coatings of any type using a laser
WO1996022518A1 (en) * 1995-01-18 1996-07-25 Hans Georg Platsch Apparatus for surface measurement of a print product
US5982500A (en) * 1995-05-07 1999-11-09 Platsch; Hans Georg Device for measuring the surface of a print product

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4168327A (en) * 1976-03-05 1979-09-18 Research Corporation Space-charge controlled electrostatic spraying
DE2930870C2 (en) * 1979-07-30 1981-04-02 Felten & Guilleaume Carlswerk AG, 5000 Köln Method and device for producing enamel-insulated winding wires, in particular thick wires
US4478869A (en) * 1983-01-03 1984-10-23 Owens-Corning Fiberglas Corporation Applying granules to strip asphaltic material
US4738866A (en) * 1987-03-20 1988-04-19 Burlington Industries, Inc. Apparatus and method for determining whether an adequate amount of sizing has been applied to yarn ends
DE3725652A1 (en) * 1987-08-03 1989-02-16 Kadia Diamant CUTTING MACHINE TOOL
US4957770A (en) * 1989-01-27 1990-09-18 Measurex Corporation Coating weight measuring and control apparatus and method
US4950905A (en) * 1989-02-06 1990-08-21 Xerox Corporation Colored toner optical developability sensor with improved sensing latitude
US5119132A (en) * 1990-10-24 1992-06-02 Xerox Corporation Densitometer and circuitry with improved measuring capabilities of marking particle density on a photoreceptor
US5338361A (en) * 1991-11-04 1994-08-16 Measurex Corporation Multiple coat measurement and control apparatus and method
US5276327A (en) * 1991-12-09 1994-01-04 Measurex Corporation Sensor and method for mesaurement of select components of a material
US5496407A (en) * 1993-04-19 1996-03-05 Mcaleavey; Michael E. System and method for monitoring and controlling thickness
US6063194A (en) * 1998-06-10 2000-05-16 Delsys Pharmaceutical Corporation Dry powder deposition apparatus
US6120832A (en) * 1998-11-25 2000-09-19 The Lubrizol Corporation Method and apparatus for measuring the transfer efficiency of a coating material
US7679063B2 (en) * 2005-11-07 2010-03-16 Cardinal Cg Company Method and apparatus for identifying photocatalytic coatings
DE102013011308A1 (en) * 2013-07-06 2015-01-08 Falk Steuerungssysteme Gmbh Device and method for in-line surface analysis on strip galvanizing plants

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2206963A (en) * 1987-06-09 1989-01-18 Us Commerce Determining surface density of coal or rock dust
EP0452665A2 (en) * 1990-04-20 1991-10-23 Electronic Systems S.P.A. Device and scanning method for measuring the thickness of opaque or transparent coatings of any type using a laser
EP0452665A3 (en) * 1990-04-20 1992-09-09 Electronic Systems S.P.A. Device and scanning method for measuring the thickness of opaque or transparent coatings of any type using a laser
WO1996022518A1 (en) * 1995-01-18 1996-07-25 Hans Georg Platsch Apparatus for surface measurement of a print product
US5982500A (en) * 1995-05-07 1999-11-09 Platsch; Hans Georg Device for measuring the surface of a print product

Also Published As

Publication number Publication date
US3801349A (en) 1974-04-02
CA949744A (en) 1974-06-25

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee