JPS57125833A - Measuring method for degree of rust removal - Google Patents

Measuring method for degree of rust removal

Info

Publication number
JPS57125833A
JPS57125833A JP1164981A JP1164981A JPS57125833A JP S57125833 A JPS57125833 A JP S57125833A JP 1164981 A JP1164981 A JP 1164981A JP 1164981 A JP1164981 A JP 1164981A JP S57125833 A JPS57125833 A JP S57125833A
Authority
JP
Japan
Prior art keywords
rust
light
degree
skin
rust removal
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
JP1164981A
Other languages
Japanese (ja)
Other versions
JPS6234093B2 (en
Inventor
Tsunehisa Yamamoto
Takeo Yamada
Kosaku Kosaka
Yoshiaki Sasaki
Naoki Furuno
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.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan 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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP1164981A priority Critical patent/JPS57125833A/en
Publication of JPS57125833A publication Critical patent/JPS57125833A/en
Publication of JPS6234093B2 publication Critical patent/JPS6234093B2/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
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/8901—Optical details; Scanning details

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (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 Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

PURPOSE:To equalize the sensitivity to red rust and skin to measure the degree of rust removal, by using the light of a wavelength band which has a high absorptivity for rust independently of kinds of iron rust and is constant approximately. CONSTITUTION:The light from a light source 4 is reflected diffusely by a material 3 to be measured consisting of a steel plate or the like, and the scattering light including a positive reflection light is condensed by a condenser lens and is converted to an electric signal proportional to the quantity of the reflection light by a photodetector 5. This electric signal is subjected to processings such as amplification by an electric processing circuit 7 and is displayed on a display device 8. Since approximately 550mm. wavelength has the same reflection factor for red rust and skin, a green light emitting diode is used as the light source 4. This wavelength band is used to measure the degree of rust removal for red rust and skin by the shot blast quantity.
JP1164981A 1981-01-30 1981-01-30 Measuring method for degree of rust removal Granted JPS57125833A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1164981A JPS57125833A (en) 1981-01-30 1981-01-30 Measuring method for degree of rust removal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1164981A JPS57125833A (en) 1981-01-30 1981-01-30 Measuring method for degree of rust removal

Publications (2)

Publication Number Publication Date
JPS57125833A true JPS57125833A (en) 1982-08-05
JPS6234093B2 JPS6234093B2 (en) 1987-07-24

Family

ID=11783794

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1164981A Granted JPS57125833A (en) 1981-01-30 1981-01-30 Measuring method for degree of rust removal

Country Status (1)

Country Link
JP (1) JPS57125833A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6236543A (en) * 1985-08-12 1987-02-17 Kawasaki Steel Corp Purity measurement for steel plate surface

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04110898U (en) * 1991-03-13 1992-09-25 文化シヤツター株式会社 Electric shutter maintenance equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6236543A (en) * 1985-08-12 1987-02-17 Kawasaki Steel Corp Purity measurement for steel plate surface

Also Published As

Publication number Publication date
JPS6234093B2 (en) 1987-07-24

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