JPS5627647A - Supersonic flaw detecting method for centrifugal cast stainless steel pipe exposed to high temperature - Google Patents
Supersonic flaw detecting method for centrifugal cast stainless steel pipe exposed to high temperatureInfo
- Publication number
- JPS5627647A JPS5627647A JP10311979A JP10311979A JPS5627647A JP S5627647 A JPS5627647 A JP S5627647A JP 10311979 A JP10311979 A JP 10311979A JP 10311979 A JP10311979 A JP 10311979A JP S5627647 A JPS5627647 A JP S5627647A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- supersonic
- stainless steel
- steel pipe
- supersonic waves
- 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
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
PURPOSE: To enable to ascertain the state of deterioration correctly by fixing probes to different holders respectively and making transmitting pulses pass a part about 2/3 of the thickness of an inspected pipe from its outer surface.
CONSTITUTION: Generally the crystal grains of a centrifugal cast stainless steel pipe 1 are coarse having highly directional property and the scattering and attenuation of supersonic waves in the pipe are serious, therefore, longitudinal supersonic waves of a frequency of 0.5W2MHz are used for flaw detection. Such supersonic waves are transmitted from a transmitting probe 3 electrically connected with a flaw detector 10 to the inspected pipe 1, received and converted into electric signals by a receiving probe 4 and outputted to the flaw detector 10. The existence and sizes of inside cracks 2 obtained by the flaw detector 10 are displayed as a chart 12 by a recorder 11. As the inside cracks 2 occur mostly in a part about 2/3 of the thickness of the inspected pipe 1 from its outer surface, the angle of incidence of the supersonic waves is set so that supersonic transmitting pulses may pass through said layer.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10311979A JPS5627647A (en) | 1979-08-15 | 1979-08-15 | Supersonic flaw detecting method for centrifugal cast stainless steel pipe exposed to high temperature |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10311979A JPS5627647A (en) | 1979-08-15 | 1979-08-15 | Supersonic flaw detecting method for centrifugal cast stainless steel pipe exposed to high temperature |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5627647A true JPS5627647A (en) | 1981-03-18 |
JPH0155409B2 JPH0155409B2 (en) | 1989-11-24 |
Family
ID=14345689
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10311979A Granted JPS5627647A (en) | 1979-08-15 | 1979-08-15 | Supersonic flaw detecting method for centrifugal cast stainless steel pipe exposed to high temperature |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5627647A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6126857A (en) * | 1984-07-16 | 1986-02-06 | Kobe Steel Ltd | Ultrasonic flaw detecting method and defect deciding method of centrifugally cast iron pipe |
JPS6169157U (en) * | 1984-10-13 | 1986-05-12 | ||
JPS62179660A (en) * | 1986-01-27 | 1987-08-06 | ザ・バブコツク・アンド・ウイルコツクス・カンパニ− | Ultrasonic detecting method of hydrogen damage in boiler tube |
JP2003066012A (en) * | 2001-08-30 | 2003-03-05 | Idemitsu Eng Co Ltd | Method and device for inspecting defect by surface wave |
JP2003329513A (en) * | 2002-05-15 | 2003-11-19 | Koyo Seiko Co Ltd | Measuring method for propagation speed of ultrasonic waves in inner ring of cylindrical roller bearing and measuring method for degree of fatigue |
US9267636B2 (en) | 2010-05-07 | 2016-02-23 | 1876255 Ontario Limited | Protective liner with wear detection |
CN105672483A (en) * | 2016-02-03 | 2016-06-15 | 安徽鸿路钢结构(集团)股份有限公司 | Arc-shaped cross frame and round pipe connection quality control method |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3302453A (en) * | 1963-04-15 | 1967-02-07 | American Mach & Foundry | Method of inspection utilizing ultrasonic energy |
JPS54128789A (en) * | 1978-03-29 | 1979-10-05 | Kubota Ltd | Method of detecting flaw of tube via ultrasonic wave |
-
1979
- 1979-08-15 JP JP10311979A patent/JPS5627647A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3302453A (en) * | 1963-04-15 | 1967-02-07 | American Mach & Foundry | Method of inspection utilizing ultrasonic energy |
JPS54128789A (en) * | 1978-03-29 | 1979-10-05 | Kubota Ltd | Method of detecting flaw of tube via ultrasonic wave |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6126857A (en) * | 1984-07-16 | 1986-02-06 | Kobe Steel Ltd | Ultrasonic flaw detecting method and defect deciding method of centrifugally cast iron pipe |
JPS6169157U (en) * | 1984-10-13 | 1986-05-12 | ||
JPS62179660A (en) * | 1986-01-27 | 1987-08-06 | ザ・バブコツク・アンド・ウイルコツクス・カンパニ− | Ultrasonic detecting method of hydrogen damage in boiler tube |
JP2003066012A (en) * | 2001-08-30 | 2003-03-05 | Idemitsu Eng Co Ltd | Method and device for inspecting defect by surface wave |
JP2003329513A (en) * | 2002-05-15 | 2003-11-19 | Koyo Seiko Co Ltd | Measuring method for propagation speed of ultrasonic waves in inner ring of cylindrical roller bearing and measuring method for degree of fatigue |
US9267636B2 (en) | 2010-05-07 | 2016-02-23 | 1876255 Ontario Limited | Protective liner with wear detection |
CN105672483A (en) * | 2016-02-03 | 2016-06-15 | 安徽鸿路钢结构(集团)股份有限公司 | Arc-shaped cross frame and round pipe connection quality control method |
CN105672483B (en) * | 2016-02-03 | 2017-11-28 | 安徽鸿路钢结构(集团)股份有限公司 | Arc cross and pipe quality of connection control method |
Also Published As
Publication number | Publication date |
---|---|
JPH0155409B2 (en) | 1989-11-24 |
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