JPS6483322A - Method for evaluating deep drawability of metallic sheet - Google Patents

Method for evaluating deep drawability of metallic sheet

Info

Publication number
JPS6483322A
JPS6483322A JP62238183A JP23818387A JPS6483322A JP S6483322 A JPS6483322 A JP S6483322A JP 62238183 A JP62238183 A JP 62238183A JP 23818387 A JP23818387 A JP 23818387A JP S6483322 A JPS6483322 A JP S6483322A
Authority
JP
Japan
Prior art keywords
speed
ratio
ultrasonic
propagation time
longitudinal
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
JP62238183A
Other languages
Japanese (ja)
Other versions
JPH0557542B2 (en
Inventor
Riichi Murayama
Kazuo Fujisawa
Hidekazu Fukuoka
Masahiko Hirao
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
Sumitomo Metal Industries 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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP62238183A priority Critical patent/JPS6483322A/en
Publication of JPS6483322A publication Critical patent/JPS6483322A/en
Publication of JPH0557542B2 publication Critical patent/JPH0557542B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

PURPOSE:To evaluate in terms of on-line by the non-destructive measurement by propagating the ultrasonics in the plate thickness direction to obtain the speed ratio of the longitudinal wave speed and the mean speed of the two transversal waves and by obtaining the plastic strain ratio from the correlation between the speed ratio obtained previously and the plastic strain ratio. CONSTITUTION:A sensor part 10 is brought into contact with the metallic sheet and the ultrasonic is propagated to the plate thickness direction. The sensor part 10 is provided with a longitudinal ultrasonic probes 11, and transversal ultrasonic probes 12, 13 and each probe 11-13 is connected to propagation time measuring instruments 31-33 through ultrasonic flaw detectors 21-23 respectively. In this condition, the propagation time of the longitudinal waves, the propagation time of the transversal waves polarized in the rolling direction and the propagation time of the transversal waves polarized in the direction orthogonal to the rolling direction are measured and based on those measured results, the speed ratio of the ultrasonic between the longitudinal speed and mean speed of the two transversal waves is obtained. Based on this speed ratio and the correlation obtained previously between the speed ratio and the plastic strain ratio, the plastic ratio is to be obtained, therefore, the deep ability of the metallic sheet is evaluated by the non-destructive measurement.
JP62238183A 1987-09-22 1987-09-22 Method for evaluating deep drawability of metallic sheet Granted JPS6483322A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62238183A JPS6483322A (en) 1987-09-22 1987-09-22 Method for evaluating deep drawability of metallic sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62238183A JPS6483322A (en) 1987-09-22 1987-09-22 Method for evaluating deep drawability of metallic sheet

Publications (2)

Publication Number Publication Date
JPS6483322A true JPS6483322A (en) 1989-03-29
JPH0557542B2 JPH0557542B2 (en) 1993-08-24

Family

ID=17026399

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62238183A Granted JPS6483322A (en) 1987-09-22 1987-09-22 Method for evaluating deep drawability of metallic sheet

Country Status (1)

Country Link
JP (1) JPS6483322A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04236724A (en) * 1991-01-14 1992-08-25 Sumitomo Metal Ind Ltd Method for controlling temperature in continuous heat treatment line
US5467655A (en) * 1991-03-27 1995-11-21 Nippon Steel Corporation Method for measuring properties of cold rolled thin steel sheet and apparatus therefor
JP2016176884A (en) * 2015-03-23 2016-10-06 株式会社日立製作所 Ultrasonic thickness measurement method and apparatus, and defect position detection method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04236724A (en) * 1991-01-14 1992-08-25 Sumitomo Metal Ind Ltd Method for controlling temperature in continuous heat treatment line
US5467655A (en) * 1991-03-27 1995-11-21 Nippon Steel Corporation Method for measuring properties of cold rolled thin steel sheet and apparatus therefor
JP2016176884A (en) * 2015-03-23 2016-10-06 株式会社日立製作所 Ultrasonic thickness measurement method and apparatus, and defect position detection method

Also Published As

Publication number Publication date
JPH0557542B2 (en) 1993-08-24

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