JPS5673338A - Detecting agent for cracks in steel material coating - Google Patents
Detecting agent for cracks in steel material coatingInfo
- Publication number
- JPS5673338A JPS5673338A JP14947879A JP14947879A JPS5673338A JP S5673338 A JPS5673338 A JP S5673338A JP 14947879 A JP14947879 A JP 14947879A JP 14947879 A JP14947879 A JP 14947879A JP S5673338 A JPS5673338 A JP S5673338A
- Authority
- JP
- Japan
- Prior art keywords
- cracks
- steel material
- detecting agent
- iron ion
- steel
- 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
Links
- 229910000831 Steel Inorganic materials 0.000 title abstract 6
- 239000010959 steel Substances 0.000 title abstract 6
- 239000003795 chemical substances by application Substances 0.000 title abstract 4
- 239000000463 material Substances 0.000 title abstract 4
- 239000011248 coating agent Substances 0.000 title abstract 3
- 238000000576 coating method Methods 0.000 title abstract 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 abstract 3
- 239000003153 chemical reaction reagent Substances 0.000 abstract 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 3
- 229910052742 iron Inorganic materials 0.000 abstract 3
- -1 iron ion Chemical class 0.000 abstract 3
- 239000002253 acid Substances 0.000 abstract 2
- 239000003086 colorant Substances 0.000 abstract 2
- 239000003973 paint Substances 0.000 abstract 2
- 241000047703 Nonion Species 0.000 abstract 1
- 239000003945 anionic surfactant Substances 0.000 abstract 1
- 238000004040 coloring Methods 0.000 abstract 1
- 238000002156 mixing Methods 0.000 abstract 1
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 239000012466 permeate Substances 0.000 abstract 1
- 239000004094 surface-active agent Substances 0.000 abstract 1
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
- G01N21/91—Investigating the presence of flaws or contamination using penetration of dyes, e.g. fluorescent ink
Landscapes
- 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)
Abstract
PURPOSE:To arrange so that cracks in steel material coating may be detected clearly, by blending an acid solution and a reagent which colors reacting with an iron ion and adding a small quantity of surfactant therein. CONSTITUTION:A prearranged dose of weak acid such as acetic acid, etc. of proper concentration which dissolves steel, penetrating into cracks in a coating on steel material, etc. and a reagent such as arizanine S, etc. which colors reacting with an iron ion, are blended. And to this blended solution, a small quantity of nonion or anion surfactant is added. This detecting agent is uniformly applied on the surface of steel paint coat and is left alone for two to three minutes. The detecting agent permeates inside through cracks, etc., reaching the inner layer of steel material where the solution-contacted portion dissolves. Then eluted iron ion and a coloring reagent react each other, developing a color. This detecting agent allows especially clear observation of tensioned cracks in the paint coat in sharp contrast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14947879A JPS5673338A (en) | 1979-11-20 | 1979-11-20 | Detecting agent for cracks in steel material coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14947879A JPS5673338A (en) | 1979-11-20 | 1979-11-20 | Detecting agent for cracks in steel material coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5673338A true JPS5673338A (en) | 1981-06-18 |
Family
ID=15476020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14947879A Pending JPS5673338A (en) | 1979-11-20 | 1979-11-20 | Detecting agent for cracks in steel material coating |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5673338A (en) |
-
1979
- 1979-11-20 JP JP14947879A patent/JPS5673338A/en active Pending
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