JPS5779084A - Method for controlling weld input of electric welded tube - Google Patents

Method for controlling weld input of electric welded tube

Info

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
Application number
JP15450580A
Other languages
Japanese (ja)
Other versions
JPS6028591B2 (en
Inventor
Masao Tatsuwaki
Arata Nemoto
Yutaka Katayama
Michio Okada
Kazuyuki Hotta
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP15450580A priority Critical patent/JPS6028591B2/en
Publication of JPS5779084A publication Critical patent/JPS5779084A/en
Publication of JPS6028591B2 publication Critical patent/JPS6028591B2/en
Expired legal-status Critical Current

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  • 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
JP15450580A 1980-10-31 1980-10-31 Welding heat input control method for ERW pipes Expired JPS6028591B2 (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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