JPS57114808A - Measuring method for form of bar stock - Google Patents

Measuring method for form of bar stock

Info

Publication number
JPS57114808A
JPS57114808A JP64981A JP64981A JPS57114808A JP S57114808 A JPS57114808 A JP S57114808A JP 64981 A JP64981 A JP 64981A JP 64981 A JP64981 A JP 64981A JP S57114808 A JPS57114808 A JP S57114808A
Authority
JP
Japan
Prior art keywords
stock
echo
bar
bar steel
diameter
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.)
Pending
Application number
JP64981A
Other languages
Japanese (ja)
Inventor
Koji Inazaki
Mitsuo Yoshida
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.)
Nippon Steel Corp
Original Assignee
Nippon 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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP64981A priority Critical patent/JPS57114808A/en
Publication of JPS57114808A publication Critical patent/JPS57114808A/en
Pending 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
    • G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
    • G01B17/02—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations for measuring thickness

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)

Abstract

PURPOSE:To ensure the quick and automatic measurement of a bar stock, by carrying out an internal quality inspection of a bar steel by an ultrasonic flaw detector while rotating the bar steel and at the same time measuring consecutively the form of the bar steel. CONSTITUTION:A trigger generator 7 is driven by a clock pulse generator 5, and an ultrasonic beam is made incident vertically to a bar stock 1 from a probe 2. The beam is reflected on the surface and the bottom surface of the stock 1 to produce a surface echo 3a and a bottom surface echo 3b, respectively. The number of clock pulses convering from the echo 3a to the echo 3b is counted by a counter 9. Then the diameter of the stock 1 is obtained from the count value of the pulses plus the propagating speed of the ultrasonic beam into the stock 1 and by means of an operator 10. Furthermore, the maximum value, the minimum value and the deviation are calculated for the diameter of the stock 1 at every rotation to be displayed at a display divice 11.
JP64981A 1981-01-08 1981-01-08 Measuring method for form of bar stock Pending JPS57114808A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP64981A JPS57114808A (en) 1981-01-08 1981-01-08 Measuring method for form of bar stock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP64981A JPS57114808A (en) 1981-01-08 1981-01-08 Measuring method for form of bar stock

Publications (1)

Publication Number Publication Date
JPS57114808A true JPS57114808A (en) 1982-07-16

Family

ID=11479551

Family Applications (1)

Application Number Title Priority Date Filing Date
JP64981A Pending JPS57114808A (en) 1981-01-08 1981-01-08 Measuring method for form of bar stock

Country Status (1)

Country Link
JP (1) JPS57114808A (en)

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