JPS56124045A - Measuring device for spheroidizing ratio of graphite of ductile cast iron article - Google Patents

Measuring device for spheroidizing ratio of graphite of ductile cast iron article

Info

Publication number
JPS56124045A
JPS56124045A JP2844680A JP2844680A JPS56124045A JP S56124045 A JPS56124045 A JP S56124045A JP 2844680 A JP2844680 A JP 2844680A JP 2844680 A JP2844680 A JP 2844680A JP S56124045 A JPS56124045 A JP S56124045A
Authority
JP
Japan
Prior art keywords
graphite
forest
cast iron
spheroidizing ratio
ductile cast
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.)
Granted
Application number
JP2844680A
Other languages
Japanese (ja)
Other versions
JPS627505B2 (en
Inventor
Tatsuo Seguchi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP2844680A priority Critical patent/JPS56124045A/en
Publication of JPS56124045A publication Critical patent/JPS56124045A/en
Publication of JPS627505B2 publication Critical patent/JPS627505B2/ja
Granted 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
    • G01N29/04—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
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/0289—Internal structure, e.g. defects, grain size, texture
    • 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
    • G01N2291/101—Number of transducers one transducer
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (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)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

PURPOSE:To easily find the spheroidizing ratio of graphite of a sample which is parameter of estimation of the quality of material by giving a ultrasonic pulse signal to the ductile cast iron article of which the quality is to be measured and by measuring a ultrasonic forest-shaped echo signal from the sample to be measured. CONSTITUTION:The ultrasonic pulse signal is given from a ultrasonic flaw detector 2 to the sample 1 to be measured of the ductile cast iron article, and the ultrasonic forest-shaped echo signal from the sample 1 is delivered to a memory device 3 as a corresponding electric forest-shaped echo signal. Next, an average value is found from the heights of the several forest-shaped echo signals stored by an average value circuit 4, the average value of the height of forest-shaped echo from the average value circuit 4 is converted into the spheroidizing ratio of graphite based on the correlation between the height of forest-shaped echo stored beforehand and the spheroidizing ratio of graphite by a conversion device 5, and the output from the conversion device 5 is indicated as the spheroidizing ratio of graphite by an indication device 6. By this method, even for the ductile cast iron article having indeterminate form, thick wall and large size, the spheroidizing ratio of graphite which is the parameter of the estimation of the quality of material can be measured with ease.
JP2844680A 1980-03-06 1980-03-06 Measuring device for spheroidizing ratio of graphite of ductile cast iron article Granted JPS56124045A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2844680A JPS56124045A (en) 1980-03-06 1980-03-06 Measuring device for spheroidizing ratio of graphite of ductile cast iron article

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2844680A JPS56124045A (en) 1980-03-06 1980-03-06 Measuring device for spheroidizing ratio of graphite of ductile cast iron article

Publications (2)

Publication Number Publication Date
JPS56124045A true JPS56124045A (en) 1981-09-29
JPS627505B2 JPS627505B2 (en) 1987-02-17

Family

ID=12248892

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2844680A Granted JPS56124045A (en) 1980-03-06 1980-03-06 Measuring device for spheroidizing ratio of graphite of ductile cast iron article

Country Status (1)

Country Link
JP (1) JPS56124045A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6082857A (en) * 1983-10-13 1985-05-11 Kubota Ltd Ultrasonic flaw detection of metal body
JP2012233771A (en) * 2011-04-28 2012-11-29 Osaka Gas Co Ltd Method for determining material of laid cast iron pipe and system for determining material of laid cast iron pipe
CN109254081A (en) * 2018-10-24 2019-01-22 贵州省分析测试研究院 The method and apparatus for measuring graphite attribute inside gray cast iron

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6082857A (en) * 1983-10-13 1985-05-11 Kubota Ltd Ultrasonic flaw detection of metal body
JPH0361903B2 (en) * 1983-10-13 1991-09-24 Kubota Kk
JP2012233771A (en) * 2011-04-28 2012-11-29 Osaka Gas Co Ltd Method for determining material of laid cast iron pipe and system for determining material of laid cast iron pipe
CN109254081A (en) * 2018-10-24 2019-01-22 贵州省分析测试研究院 The method and apparatus for measuring graphite attribute inside gray cast iron

Also Published As

Publication number Publication date
JPS627505B2 (en) 1987-02-17

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