CA2018701A1 - Method for one-side root pass welding of a pipe joint - Google Patents

Method for one-side root pass welding of a pipe joint

Info

Publication number
CA2018701A1
CA2018701A1 CA2018701A CA2018701A CA2018701A1 CA 2018701 A1 CA2018701 A1 CA 2018701A1 CA 2018701 A CA2018701 A CA 2018701A CA 2018701 A CA2018701 A CA 2018701A CA 2018701 A1 CA2018701 A1 CA 2018701A1
Authority
CA
Canada
Prior art keywords
welding
pipes
arc
speed
pipe joint
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
CA2018701A
Other languages
French (fr)
Other versions
CA2018701C (en
Inventor
Yuji Sugitani
Masatomo Murayama
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.)
JFE Engineering Corp
Original Assignee
Yuji Sugitani
Masatomo Murayama
Nkk Corporation
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 Yuji Sugitani, Masatomo Murayama, Nkk Corporation filed Critical Yuji Sugitani
Publication of CA2018701A1 publication Critical patent/CA2018701A1/en
Application granted granted Critical
Publication of CA2018701C publication Critical patent/CA2018701C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Butt Welding And Welding Of Specific Article (AREA)
  • Arc Welding Control (AREA)

Abstract

ABSTRACT OF THE DISCLOSURE
A method for one-side root path welding of a pipe joint comprises the steps of forming a ring groove having a V-shaped bottom portion thereof at end faces of both pipes whose joint is circumferentially welded, attaching a backing material to a butt portion of the pipes from an internal side of the pipes, running an automatic welding machine along a guide rail mounted on an outer surface of the pipes in the circumferential direction thereof, controlling a position of a welding torch along a seam by means of an arc sensor, and welding root pass from the outer side of the pipes with a predetermined welding current and at a welding speed in a high-speed rotating arc welding of the pipes at a predetermined rotational speed and with a predetermined diameter of rotation. The rotational speed of arc is from 10 to 150 Hz. The rotation diameter of the arc is from 1 to 4 mm. The welding current is from 200 to 500 A. The welding speed is from 75 to 300 cm/min.
CA 2018701 1989-06-13 1990-06-11 Method for one-side root pass welding of a pipe joint Expired - Fee Related CA2018701C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP14839289A JPH06270B2 (en) 1989-06-13 1989-06-13 One-sided first layer welding method for pipes
JP148392/89 1989-06-13

Publications (2)

Publication Number Publication Date
CA2018701A1 true CA2018701A1 (en) 1990-12-13
CA2018701C CA2018701C (en) 1994-07-05

Family

ID=15451753

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2018701 Expired - Fee Related CA2018701C (en) 1989-06-13 1990-06-11 Method for one-side root pass welding of a pipe joint

Country Status (2)

Country Link
JP (1) JPH06270B2 (en)
CA (1) CA2018701C (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3323028B2 (en) * 1995-03-31 2002-09-09 株式会社日立製作所 Automatic welding equipment and welding method
CN1261427A (en) 1997-06-30 2000-07-26 株式会社杰克赛尔 Refrigerating apparatus for vehicles
JP4922547B2 (en) * 2003-12-01 2012-04-25 株式会社フジキン Piping welding method and piping welding structure
JP2012250787A (en) * 2011-05-31 2012-12-20 Hitachi Ltd Elevator control device
US20130001210A1 (en) * 2011-07-01 2013-01-03 Illinois Tool Works Inc. Metal cored welding method and system
CN111992860B (en) * 2020-08-26 2022-08-02 广船国际有限公司 Flux-cored wire deposited metal test method

Also Published As

Publication number Publication date
CA2018701C (en) 1994-07-05
JPH06270B2 (en) 1994-01-05
JPH0318476A (en) 1991-01-28

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed