JPS5779084A - Method for controlling weld input of electric welded tube - Google Patents
Method for controlling weld input of electric welded tubeInfo
- Publication number
- JPS5779084A JPS5779084A JP15450580A JP15450580A JPS5779084A JP S5779084 A JPS5779084 A JP S5779084A JP 15450580 A JP15450580 A JP 15450580A JP 15450580 A JP15450580 A JP 15450580A JP S5779084 A JPS5779084 A JP S5779084A
- Authority
- JP
- Japan
- Prior art keywords
- temp
- butt
- point
- welded tube
- controlling
- 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
- Radiation Pyrometers (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
PURPOSE: To make controlling of high accuracy possible by detecting the positions of a weld butt point, detecting the temp. of the prescribed position associated to this position and using this as a target for controlling.
CONSTITUTION: In a method of heating the opposite edge parts of an open pipe OP made by curving a metallic strip to a cylindrical shape in such a way as butt its both edges by means of a contact tip CT, and butt welding the same thereby producing an electric welded tube P continuously, the position Xv of a weld butt point V is optically detected. The position of the position Xv+k on the upper stream than the point V is determined and the temp. of this position is specified. The temp. of the position Xv+k obtained in this way is inputted to a high frequency power source control circuit 8, and is compared with the preset reference temp. An electric power source 9 for heating is so controlled that said temp. coincides with the reference temp.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15450580A JPS6028591B2 (en) | 1980-10-31 | 1980-10-31 | Welding heat input control method for ERW pipes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15450580A JPS6028591B2 (en) | 1980-10-31 | 1980-10-31 | Welding heat input control method for ERW pipes |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5779084A true JPS5779084A (en) | 1982-05-18 |
JPS6028591B2 JPS6028591B2 (en) | 1985-07-05 |
Family
ID=15585702
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15450580A Expired JPS6028591B2 (en) | 1980-10-31 | 1980-10-31 | Welding heat input control method for ERW pipes |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6028591B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59130692A (en) * | 1983-01-14 | 1984-07-27 | Sumitomo Metal Ind Ltd | Method for controlling weld heat input of seamed welded tube |
-
1980
- 1980-10-31 JP JP15450580A patent/JPS6028591B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59130692A (en) * | 1983-01-14 | 1984-07-27 | Sumitomo Metal Ind Ltd | Method for controlling weld heat input of seamed welded tube |
Also Published As
Publication number | Publication date |
---|---|
JPS6028591B2 (en) | 1985-07-05 |
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