SE8802279L - PROCEDURE FOR IDENTIFICATION OF SURFACE DAMAGE ON A STONE ROLL IN THE PRESSURE PART OF A PAPER MACHINE - Google Patents

PROCEDURE FOR IDENTIFICATION OF SURFACE DAMAGE ON A STONE ROLL IN THE PRESSURE PART OF A PAPER MACHINE

Info

Publication number
SE8802279L
SE8802279L SE8802279A SE8802279A SE8802279L SE 8802279 L SE8802279 L SE 8802279L SE 8802279 A SE8802279 A SE 8802279A SE 8802279 A SE8802279 A SE 8802279A SE 8802279 L SE8802279 L SE 8802279L
Authority
SE
Sweden
Prior art keywords
roll
stone roll
paper machine
stone
identification
Prior art date
Application number
SE8802279A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE8802279D0 (en
Inventor
H E Kalaniemi
Original Assignee
Safematic Ltd Oy
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 Safematic Ltd Oy filed Critical Safematic Ltd Oy
Publication of SE8802279D0 publication Critical patent/SE8802279D0/en
Publication of SE8802279L publication Critical patent/SE8802279L/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/08—Pressure rolls
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/04—Arrangements thereof

Landscapes

  • Paper (AREA)
  • Crushing And Grinding (AREA)

Abstract

The invention relates to a method of detecting surface damages in a stone roll of a press section in a paper machine or the like. The stone roll is provided with a doctor blade arranged in a pivotable holder so as to extend over the whole length of the roll for scraping the surface of the roll. In order that surface damages in the stone roll could be detected during the run, shocks exerted on the doctor blade due to surface damages in the stone roll are recorded by acceleration transducers arranged in the holder. The signal obtained from each transducer is summed in a synchronized manner with the rotation of the roll. (Figure 2)
SE8802279A 1987-06-23 1988-06-17 PROCEDURE FOR IDENTIFICATION OF SURFACE DAMAGE ON A STONE ROLL IN THE PRESSURE PART OF A PAPER MACHINE SE8802279L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI872793A FI77490B (en) 1987-06-23 1987-06-23 FOERFARANDE FOER IDENTIFIERING AV YTSKADOR PAO EN STENVALS I ETT PRESSPARTI VID EN PAPPERSMASKIN ELLER LIKNANDE.

Publications (2)

Publication Number Publication Date
SE8802279D0 SE8802279D0 (en) 1988-06-17
SE8802279L true SE8802279L (en) 1988-12-24

Family

ID=8524717

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8802279A SE8802279L (en) 1987-06-23 1988-06-17 PROCEDURE FOR IDENTIFICATION OF SURFACE DAMAGE ON A STONE ROLL IN THE PRESSURE PART OF A PAPER MACHINE

Country Status (4)

Country Link
CA (1) CA1320757C (en)
DE (1) DE3821095A1 (en)
FI (1) FI77490B (en)
SE (1) SE8802279L (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5048353A (en) * 1990-03-01 1991-09-17 Beloit Corporation Method and apparatus for roll profile measurement
WO1999036616A1 (en) 1998-01-20 1999-07-22 Valmet Corporation Method and device for conditioning of a roll, in particular of a roll in a paper machine or in a paper finishing device
DE102011051929B3 (en) 2011-07-19 2012-10-18 Gerhard Hertel Device for a scraper and scraper arrangement with such a device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1164708B (en) * 1961-11-16 1964-03-05 Hans Biel Fa Device for detecting surface defects on moving material webs, in particular paper webs
US3793627A (en) * 1972-06-28 1974-02-19 Gen Electric Automatic sonic detection of chipped cutting tools
DE2937673A1 (en) * 1979-09-14 1981-04-02 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Shaft or vehicle wheel eccentricity monitoring system - has sensor and counter determining angular position and distance sensor for eccentricity
US4429578A (en) * 1982-03-22 1984-02-07 General Electric Company Acoustical defect detection system
US4471444A (en) * 1982-04-02 1984-09-11 The United States Of America As Represented By The Secretary Of Commerce Rotating tool wear monitoring apparatus

Also Published As

Publication number Publication date
FI872793A0 (en) 1987-06-23
FI77490B (en) 1988-11-30
SE8802279D0 (en) 1988-06-17
CA1320757C (en) 1993-07-27
DE3821095A1 (en) 1989-01-05

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