SE0302230D0 - Method of characterizing cast iron - Google Patents

Method of characterizing cast iron

Info

Publication number
SE0302230D0
SE0302230D0 SE0302230A SE0302230A SE0302230D0 SE 0302230 D0 SE0302230 D0 SE 0302230D0 SE 0302230 A SE0302230 A SE 0302230A SE 0302230 A SE0302230 A SE 0302230A SE 0302230 D0 SE0302230 D0 SE 0302230D0
Authority
SE
Sweden
Prior art keywords
graphite particles
cast iron
specimen
calculated
image
Prior art date
Application number
SE0302230A
Other languages
Swedish (sv)
Other versions
SE0302230L (en
Inventor
Jan Linder
Original Assignee
Scania Cv Abp
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 Scania Cv Abp filed Critical Scania Cv Abp
Priority to SE0302230A priority Critical patent/SE0302230L/en
Publication of SE0302230D0 publication Critical patent/SE0302230D0/en
Priority to PCT/SE2004/001116 priority patent/WO2005017835A1/en
Publication of SE0302230L publication Critical patent/SE0302230L/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/0002—Inspection of images, e.g. flaw detection
    • G06T7/0004—Industrial image inspection
    • G01N15/1433—

Abstract

In a method of characterizing cast iron with respect to its content of graphite particles, a specimen (1) of cast iron is metallographically prepared. An image of the microstructure of the specimen is displayed and fields of the image to be studied are selected. The selected fields are digitized and thresholded to obtain an image with distinguishable graphite particles, the area of which is measured. The maximum feret length is measured of the graphite particles having an area larger than a predetermined value. The measured graphite particles are divided into a number of feret length classes and the graphite particles of the same feret length class in all selected fields are summed. The feret length distribution of the graphite particles is calculated and from the calculated feret length distribution the probability for the specimen to contain graphite particles that are of a size that exceeds a predetermined size is calculated.
SE0302230A 2003-08-18 2003-08-18 Method for characterizing cast iron SE0302230L (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE0302230A SE0302230L (en) 2003-08-18 2003-08-18 Method for characterizing cast iron
PCT/SE2004/001116 WO2005017835A1 (en) 2003-08-18 2004-07-08 Method of characterizing cast iron

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0302230A SE0302230L (en) 2003-08-18 2003-08-18 Method for characterizing cast iron

Publications (2)

Publication Number Publication Date
SE0302230D0 true SE0302230D0 (en) 2003-08-18
SE0302230L SE0302230L (en) 2005-02-19

Family

ID=28450246

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0302230A SE0302230L (en) 2003-08-18 2003-08-18 Method for characterizing cast iron

Country Status (2)

Country Link
SE (1) SE0302230L (en)
WO (1) WO2005017835A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010032792A1 (en) * 2010-07-28 2012-02-02 Hüttenwerke Krupp Mannesmann GmbH Method for determining impurities in metals, particularly in block or continuous casting process cast steel, involves cutting sampling blank from casting product or deformed product

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1395147A (en) * 1971-05-06 1975-05-21 Image Analysing Computers Ltd Feature classifiaction in image analysis
JPS63127148A (en) * 1986-11-17 1988-05-31 Kanzaki Paper Mfg Co Ltd Surface inspection apparatus

Also Published As

Publication number Publication date
WO2005017835A1 (en) 2005-02-24
SE0302230L (en) 2005-02-19

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