JPS5664655A - Measurement method of isometric ratio of cast-iron piece - Google Patents
Measurement method of isometric ratio of cast-iron pieceInfo
- Publication number
- JPS5664655A JPS5664655A JP14107279A JP14107279A JPS5664655A JP S5664655 A JPS5664655 A JP S5664655A JP 14107279 A JP14107279 A JP 14107279A JP 14107279 A JP14107279 A JP 14107279A JP S5664655 A JPS5664655 A JP S5664655A
- Authority
- JP
- Japan
- Prior art keywords
- sample
- laser
- cast
- iron piece
- ultrasonic 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 perform an on-line measurement of isometric ratio of a piece of cast iron to be continuously cast by a method wherein pulse laser rays are projected to one surface of a cast iron piece to generate ultrasonic waves and the ultrasonic waves propagating in the cast iron piece are detected.
CONSTITUTION: A pulse laser 1 projects a pulse laser ray onto a surface 2a of a sample 2 such as steel material etc. Elastic waves are generated in the sample 2 and they reach the other surface 2b of the sample. A part of laser rays from the laser 1 activates a timer 5. The laser rays from a laser 6 for the measurement use are also projected onto the other surface 2b of the sample 2. The output of a detector 9 is entered in an oscilloscope 11 and a memory 12 through an amplifier 10. By means of the propagation time of ultrasonic waves in the sample 2 and the thickness of the sample 2, the thickness of the isometric part can be obtained.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14107279A JPS5664655A (en) | 1979-10-31 | 1979-10-31 | Measurement method of isometric ratio of cast-iron piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14107279A JPS5664655A (en) | 1979-10-31 | 1979-10-31 | Measurement method of isometric ratio of cast-iron piece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5664655A true JPS5664655A (en) | 1981-06-01 |
| JPS6235617B2 JPS6235617B2 (en) | 1987-08-03 |
Family
ID=15283572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14107279A Granted JPS5664655A (en) | 1979-10-31 | 1979-10-31 | Measurement method of isometric ratio of cast-iron piece |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5664655A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53126992A (en) * | 1977-04-12 | 1978-11-06 | Nippon Steel Corp | Discriminating method of casting structure by ultrasonic waves |
| JPS5492387A (en) * | 1977-12-29 | 1979-07-21 | Sumitomo Metal Ind | Noncontact supersonic inspecting method |
-
1979
- 1979-10-31 JP JP14107279A patent/JPS5664655A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53126992A (en) * | 1977-04-12 | 1978-11-06 | Nippon Steel Corp | Discriminating method of casting structure by ultrasonic waves |
| JPS5492387A (en) * | 1977-12-29 | 1979-07-21 | Sumitomo Metal Ind | Noncontact supersonic inspecting method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6235617B2 (en) | 1987-08-03 |
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