JPS5518975A - Device for predicting acuteness in non-destructive manner - Google Patents

Device for predicting acuteness in non-destructive manner

Info

Publication number
JPS5518975A
JPS5518975A JP9235178A JP9235178A JPS5518975A JP S5518975 A JPS5518975 A JP S5518975A JP 9235178 A JP9235178 A JP 9235178A JP 9235178 A JP9235178 A JP 9235178A JP S5518975 A JPS5518975 A JP S5518975A
Authority
JP
Japan
Prior art keywords
acuteness
sus
parameter
destructive manner
heat
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
JP9235178A
Other languages
Japanese (ja)
Inventor
Juichi Fukakura
Yuji Nishikawa
Kazuhiro Takenaka
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 JP9235178A priority Critical patent/JPS5518975A/en
Publication of JPS5518975A publication Critical patent/JPS5518975A/en
Pending legal-status Critical Current

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  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)

Abstract

PURPOSE: To make it possible to predict the acuteness of the thermally influenced portion due to the welding heat in a non-destructive manner by using the electro- chemical acuteness evaluation results.
CONSTITUTION: An SUS 304 is subjected at 1 to a heat treatment for equalizing temperature and acuteness. The electro-chemical acuteness parameter phf of the SUS treated is measured at 2. The resultant SUS is subjected again to an acuteness measurement to determine the parameter phf. Then, for the respective heat treatment conditions, the increment and reduction in the acuteness between the measurements 2 and 4 are inspected at 5. From this result, the acuteness increasing and decreasing speed per unit time are determined at 6. On the other hand, after the heat treatments, head is applied due to the continuous cooling processes to obtain a temperature hysteresis 8. The data of the aforementioned process 6 is substituted into the hysterisis 8 and the calculation is made to predict the parameter at 9 in the case of the continuous cooling. Thus, the acuteness due to the heat can be predicted in a non-destructive manner.
COPYRIGHT: (C)1980,JPO&Japio
JP9235178A 1978-07-28 1978-07-28 Device for predicting acuteness in non-destructive manner Pending JPS5518975A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9235178A JPS5518975A (en) 1978-07-28 1978-07-28 Device for predicting acuteness in non-destructive manner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9235178A JPS5518975A (en) 1978-07-28 1978-07-28 Device for predicting acuteness in non-destructive manner

Publications (1)

Publication Number Publication Date
JPS5518975A true JPS5518975A (en) 1980-02-09

Family

ID=14051972

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9235178A Pending JPS5518975A (en) 1978-07-28 1978-07-28 Device for predicting acuteness in non-destructive manner

Country Status (1)

Country Link
JP (1) JPS5518975A (en)

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