JPS5610253A - Method for measuring degree of formation of oxide in metallic material - Google Patents

Method for measuring degree of formation of oxide in metallic material

Info

Publication number
JPS5610253A
JPS5610253A JP8494479A JP8494479A JPS5610253A JP S5610253 A JPS5610253 A JP S5610253A JP 8494479 A JP8494479 A JP 8494479A JP 8494479 A JP8494479 A JP 8494479A JP S5610253 A JPS5610253 A JP S5610253A
Authority
JP
Japan
Prior art keywords
metallic material
oxide
sample
lengths
formation
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
JP8494479A
Other languages
Japanese (ja)
Inventor
Sanetsugu Onishi
Shunichi Kuwano
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP8494479A priority Critical patent/JPS5610253A/en
Publication of JPS5610253A publication Critical patent/JPS5610253A/en
Pending legal-status Critical Current

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  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Investigating And Analyzing Materials By Characteristic Methods (AREA)

Abstract

PURPOSE: To carry out measurement quickly and easily by carrying out dye penetrant flaw detection on the surface of a sample head and determining the quantity of the oxide of a metallic material formed based on the measured values of indication lengths.
CONSTITUTION: A mushroom-shaped sample 1 of a metallic material is cast by the low pressure casting method. The lengths of linear indications 8 generated by carrying out dye penetrant flaw detection on the surface of the head of this sample 1 are meausred. From these measured values l1, l2...ln, quantity Q of the oxide of the metallic material is determined from Q=[l1+l2+...+ln(sum of linear indication lengths)]/S (total surface area of sample).
COPYRIGHT: (C)1981,JPO&Japio
JP8494479A 1979-07-06 1979-07-06 Method for measuring degree of formation of oxide in metallic material Pending JPS5610253A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8494479A JPS5610253A (en) 1979-07-06 1979-07-06 Method for measuring degree of formation of oxide in metallic material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8494479A JPS5610253A (en) 1979-07-06 1979-07-06 Method for measuring degree of formation of oxide in metallic material

Publications (1)

Publication Number Publication Date
JPS5610253A true JPS5610253A (en) 1981-02-02

Family

ID=13844752

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8494479A Pending JPS5610253A (en) 1979-07-06 1979-07-06 Method for measuring degree of formation of oxide in metallic material

Country Status (1)

Country Link
JP (1) JPS5610253A (en)

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