GB436873A - Improvements in or relating to the testing of protective coatings - Google Patents

Improvements in or relating to the testing of protective coatings

Info

Publication number
GB436873A
GB436873A GB11849/34A GB1184934A GB436873A GB 436873 A GB436873 A GB 436873A GB 11849/34 A GB11849/34 A GB 11849/34A GB 1184934 A GB1184934 A GB 1184934A GB 436873 A GB436873 A GB 436873A
Authority
GB
United Kingdom
Prior art keywords
colour
solution
coating
testing
chemical compound
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.)
Expired
Application number
GB11849/34A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Publication of GB436873A publication Critical patent/GB436873A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
    • B27B5/16—Saw benches
    • B27B5/18—Saw benches with feedable circular saw blade, e.g. arranged on a carriage
    • B27B5/20—Saw benches with feedable circular saw blade, e.g. arranged on a carriage the saw blade being adjustable according to depth or angle of cut; Radial saws, i.e. sawing machines with a pivoted radial arm for guiding the movable carriage
    • B27B5/201—Radial sawing machines; Machines having a saw blade on an extendable radial arm
    • 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
    • G01N21/91—Investigating the presence of flaws or contamination using penetration of dyes, e.g. fluorescent ink

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical 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)

Abstract

436,873. Testing surface textures. I. G. FARBENINDUSTRIE AKT.-GES., Frankfort-on-Main, Germany. April 19, 1934, No. 11849. Convention date, April 19, 1933. [Class 97 (i)] In order to test a protective coating for flaws, there is applied to the coating a covering of a solution of a chemical compound capable of yielding a colour or a colour change with another chemical compound, the solution being removed after some time and the coating then being covered with a solution of a chemical compound capable of yielding a colour or a colour change with the first compound, so that flaws in the coating acquire the said colour or undergo the said colour change. In a specific example described for testing a homogeneously leaded object, the surface is painted with sulphuric acid which is washed off after about two hours with a water jet. After drying, the surface is painted with a Congo-red solution to which glue is added, or with a titanium white suspension coloured with Congo-red. After a short time flawed places show a blue colouration. The Congored may be replaced by other dyestuffs which are not fast to acid.
GB11849/34A 1933-04-19 1934-04-19 Improvements in or relating to the testing of protective coatings Expired GB436873A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE436873X 1910-11-28

Publications (1)

Publication Number Publication Date
GB436873A true GB436873A (en) 1935-10-21

Family

ID=6506966

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11849/34A Expired GB436873A (en) 1933-04-19 1934-04-19 Improvements in or relating to the testing of protective coatings

Country Status (2)

Country Link
FR (1) FR436873A (en)
GB (1) GB436873A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2839918A (en) * 1949-04-06 1958-06-24 Robert C Switzer Flaw detection

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2489420A (en) * 1946-09-03 1949-11-29 John E Kirk Radial arm cutoff saw
US2535908A (en) * 1946-09-17 1950-12-26 Leo A Epplin Radial arm power saw

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2839918A (en) * 1949-04-06 1958-06-24 Robert C Switzer Flaw detection

Also Published As

Publication number Publication date
FR436873A (en) 1912-04-06

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