CA2018701A1 - Method for one-side root pass welding of a pipe joint - Google Patents
Method for one-side root pass welding of a pipe jointInfo
- 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
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.
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.
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)
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 |
-
1989
- 1989-06-13 JP JP14839289A patent/JPH06270B2/en not_active Expired - Lifetime
-
1990
- 1990-06-11 CA CA 2018701 patent/CA2018701C/en not_active Expired - Fee Related
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 |