JPS5614093A - Deciding method of cut state of weld zone of electric welded tube or the like - Google Patents
Deciding method of cut state of weld zone of electric welded tube or the likeInfo
- Publication number
- JPS5614093A JPS5614093A JP9018879A JP9018879A JPS5614093A JP S5614093 A JPS5614093 A JP S5614093A JP 9018879 A JP9018879 A JP 9018879A JP 9018879 A JP9018879 A JP 9018879A JP S5614093 A JPS5614093 A JP S5614093A
- Authority
- JP
- Japan
- Prior art keywords
- cut
- welded seam
- abnormality
- welded
- temperature
- 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
Landscapes
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
PURPOSE: To enable a titled state to be accurately decided without requiring skill by obtaining the decrease in the temperature signal in the direction of crossing the welded seam after cutting of the build-up part of the continuously moving linear welded seam by detection of an infrared ray temperature.
CONSTITUTION: An electric welded tube 1 having been welded by a high frequency coil 2 is sent in the arrow direction and the build-up part of the welded seam is cut by a tool 3. The signal showing the surface temperature distribution in the scanning direction is obtained from the infrared ray temperature detector 4 which is so disposed as to have a scanning direction crossing this cut welded seam. This signal is sent via an amplifier 5 to a discrimination circuit 6. The circuit 6 decides the abnormality of the cut state and announces abnormality by an alarm device 7 in the event of abnormality. Namely, at the normal cutting, the cut portion emits metallic gloss and the emissivity there becomes exceedingly lower as compared to that at the circumference. When the cutting width decreases on account of tool wear, and if the width W of the low-temperature portion becomes less than a fixed value, an alarm is given.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9018879A JPS5614093A (en) | 1979-07-16 | 1979-07-16 | Deciding method of cut state of weld zone of electric welded tube or the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9018879A JPS5614093A (en) | 1979-07-16 | 1979-07-16 | Deciding method of cut state of weld zone of electric welded tube or the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5614093A true JPS5614093A (en) | 1981-02-10 |
Family
ID=13991506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9018879A Pending JPS5614093A (en) | 1979-07-16 | 1979-07-16 | Deciding method of cut state of weld zone of electric welded tube or the like |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5614093A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6153848A (en) * | 1998-12-07 | 2000-11-28 | Mitsubishi Denki Kabushiki Kaisha | Welding quality decision apparatus and welding machine provided with the same |
| US6911632B2 (en) * | 2001-09-12 | 2005-06-28 | Aisapack Holding Sa | Method for controlling the position of a foil strip edges |
| WO2016006514A1 (en) * | 2014-07-10 | 2016-01-14 | Ｊｆｅスチール株式会社 | Ultrasonic flaw detection device and ultrasonic flaw detection method |
-
1979
- 1979-07-16 JP JP9018879A patent/JPS5614093A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6153848A (en) * | 1998-12-07 | 2000-11-28 | Mitsubishi Denki Kabushiki Kaisha | Welding quality decision apparatus and welding machine provided with the same |
| US6911632B2 (en) * | 2001-09-12 | 2005-06-28 | Aisapack Holding Sa | Method for controlling the position of a foil strip edges |
| WO2016006514A1 (en) * | 2014-07-10 | 2016-01-14 | Ｊｆｅスチール株式会社 | Ultrasonic flaw detection device and ultrasonic flaw detection method |
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