CN105880952A - Production process of longitudinal submerged arc welded pipe for oil and gas transmission - Google Patents
Production process of longitudinal submerged arc welded pipe for oil and gas transmission Download PDFInfo
- Publication number
- CN105880952A CN105880952A CN201610410773.6A CN201610410773A CN105880952A CN 105880952 A CN105880952 A CN 105880952A CN 201610410773 A CN201610410773 A CN 201610410773A CN 105880952 A CN105880952 A CN 105880952A
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- submerged arc
- welding
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- steel pipe
- oil
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/18—Submerged-arc welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a production process of a longitudinal submerged arc welded pipe for oil and gas transmission. The production process comprises the following steps of: detecting a plate, cutting and discharging, milling edges, bending edges in advance, forming, prewelding, carrying out inside welding and outside welding, finishing, straightening, performing primary flaw detection, flattening a pipe end, expanding diameter, measuring water pressure, carrying out flaw detection again, chamfering, performing degaussing, weighing, measuring lengths and marking and leaving a factory, thus producing the longitudinal submerged arc welded pipe. The production process of the longitudinal submerged arc welded pipe for the oil and gas transmission disclosed by the invention has simple process, low cost and high efficiency, and adopts welding technologies of high-frequency prewelding and inside and outside multi-wire submerged-arc welding to greatly improve the performances of the longitudinal submerged arc welded pipe, and achieves good forming quality of the steel pipe, high production efficiency and reliable welding quality.
Description
Technical field
The present invention relates to the production technology of a kind of oil-gas transportation longitudinal submerged arc welded pipe, belong to steel pipe manufacture processing
Technical field.
Background technology
Longitudinal submerged arc welded pipe is to use JCOE steel pipe forming, one or two days weld seams, submerged-arc welding process,
Specification limit is from the steel pipe of external diameter 325mm to 1420mm.Straight-line joint submerged arc welding tube product performs GB/T3091-2008
Low-pressure fluid Steel tube standard, GB/T9711.1 (2)-1997 oil natural gas pipe perform standard, ASTM A252
The Welding Structure steel pipe U.S. performs standard.The production technology of straight-line joint submerged arc welding tube flexibly can any in production range
Specification and wall thickness, production efficiency higher-frequency straight weld steel pipe, spiral welded steel pipe are low.Straight-line joint submerged arc welding tube is maximum
Advantage is that and can produce high frequency steel pipe, the most fertile specifications and models of spiral steel pipe, even seamless steel pipe.
Longitudinal submerged arc welded pipe Heavy Type Steel Structure engineering the most at home and fluid line engineering, in the piling work of basis
To extensively application.The production technology of existing oil-gas transportation longitudinal submerged arc welded pipe, integral production efficiency is low,
The quality of production is low.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of oil-gas transportation longitudinal submerged arc welded pipe
Production technology, operation is simple, low cost, high efficiency, have employed high frequency prewelding and the weldering of inside and outside multiplewire submerged arc welding
Connection technology, improves the performance of longitudinal submerged arc welded pipe greatly, and steel pipe forming quality is good, and production efficiency is high,
Weldquality is reliable.
To achieve these goals, the present invention adopts the following technical scheme that
The production technology of a kind of oil-gas transportation longitudinal submerged arc welded pipe, comprises the following steps:
(1) sheet material detection: by ultrasonic flaw detection steel plate；
(2) cutting stock, milling limit, pre-flanging, molding；
(3) prewelding: carry out high frequency prewelding after molding, particularly as follows: steel pipe is entered by high frequency induction heater
Row heating so that the edges of boards position of steel pipe reaches plastic period, to the steel pipe plate being in plastic period
While carry out pressurized treatments, heating is carried out prewelding process, then to completing at prewelding with the steel plate in pressurized treatments
The steel pipe of reason carries out cooling process；
(4) weldering, outside weld in: use multifibres vertical masonry joint submerged arc welding technique to carry out weldering and submerged arc outside weld in submerged arc；
(5) finishing, alignment；
(6) flaw detection for the first time: online ultrasonic examination and x-ray inspection, is carried out the steel pipe of existing defects
Repair welding；
(7) pipe end tack: speculate to carry out pipe end tack by pipe end is flat；
(8) expanding: to carry out expanding by expanding machine to whole steel pipe whole process, enlarging rate is 0.8-1.2%；
(9) hydraulic pressure test；
(10) flaw detection again: online ultrasonic examination and x-ray inspection；
(11) chamfered edge, demagnetization, survey length of weighing, labelling dispatches from the factory.
Molding described in step (2) is the forming method using alternating-current resistance welded tube, alternating-current resistance welded tube
Forming method is continuous bend method, circular arc bending method or combination forming method.
Employing multifibres vertical masonry joint submerged arc welding technique described in step (4) carries out weldering and submerged arc outside weld in submerged arc, is
Referring to that first outside weld uses carbon dioxide gas arc welding bottoming welding, then interior weldering uses the welding of little specification two-layer, outward
Weldering uses big specification one layer welding.
Compared with the prior art, beneficial effects of the present invention is as follows:
The production technology of the oil-gas transportation longitudinal submerged arc welded pipe of the present invention, operation is simple, low cost, efficiently
Rate, have employed high frequency prewelding and inside and outside multiplewire submerged arc welding solder technology, improves longitudinal submerged arc welded pipe greatly
Performance, steel pipe forming quality is good, and production efficiency is high, and weldquality is reliable.
Accompanying drawing explanation
Fig. 1 is the process chart of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further illustrated, but the present invention is not limited only to these embodiments,
On the premise of without departing from present inventive concept, within any improvement made all falls within protection scope of the present invention.
Embodiment 1:
The production technology of a kind of oil-gas transportation longitudinal submerged arc welded pipe, comprises the following steps:
(1) sheet material detection: by ultrasonic flaw detection steel plate；
(2) cutting stock, milling limit, pre-flanging, molding, described molding is to use alternating-current resistance welded tube
Forming method, the forming method of alternating-current resistance welded tube is continuous bend method, circular arc bending method or combination forming method；
(3) prewelding: carry out high frequency prewelding after molding, particularly as follows: steel pipe is entered by high frequency induction heater
Row heating so that the edges of boards position of steel pipe reaches plastic period, to the steel pipe plate being in plastic period
While carry out pressurized treatments, heating is carried out prewelding process, then to completing at prewelding with the steel plate in pressurized treatments
The steel pipe of reason carries out cooling process；
(4) weldering, outside weld in: use multifibres vertical masonry joint submerged arc welding technique to carry out weldering and submerged arc outside weld in submerged arc, i.e.
First outside weld uses carbon dioxide gas arc welding bottoming welding, and then interior weldering uses the welding of little specification two-layer, outside weld
Use big specification one layer welding；
(5) finishing, alignment；
(6) flaw detection for the first time: online ultrasonic examination and x-ray inspection, is carried out the steel pipe of existing defects
Repair welding；
(7) pipe end tack: speculate to carry out pipe end tack by pipe end is flat；
(8) expanding: to carry out expanding by expanding machine to whole steel pipe whole process, enlarging rate is 0.8-1.2%；
(9) hydraulic pressure test；
(10) flaw detection again: online ultrasonic examination and x-ray inspection；
(11) chamfered edge, demagnetization, survey length of weighing, labelling dispatches from the factory.
Claims (3)
1. the production technology of an oil-gas transportation longitudinal submerged arc welded pipe, it is characterised in that: include following step
Rapid:
(1) sheet material detection: by ultrasonic flaw detection steel plate；
(2) cutting stock, milling limit, pre-flanging, molding；
(3) prewelding: carry out high frequency prewelding after molding, particularly as follows: steel pipe is entered by high frequency induction heater
Row heating so that the edges of boards position of steel pipe reaches plastic period, to the steel pipe plate being in plastic period
While carry out pressurized treatments, heating is carried out prewelding process, then to completing at prewelding with the steel plate in pressurized treatments
The steel pipe of reason carries out cooling process；
(4) weldering, outside weld in: use multifibres vertical masonry joint submerged arc welding technique to carry out weldering and submerged arc outside weld in submerged arc；
(5) finishing, alignment；
(6) flaw detection for the first time: online ultrasonic examination and x-ray inspection, is carried out the steel pipe of existing defects
Repair welding；
(7) pipe end tack: speculate to carry out pipe end tack by pipe end is flat；
(8) expanding: to carry out expanding by expanding machine to whole steel pipe whole process, enlarging rate is 0.8-1.2%；
(9) hydraulic pressure test；
(10) flaw detection again: online ultrasonic examination and x-ray inspection；
(11) chamfered edge, demagnetization, survey length of weighing, labelling dispatches from the factory.
The production technology of oil-gas transportation longitudinal submerged arc welded pipe the most according to claim 1, its feature
It is: the molding described in step (2) is the forming method using alternating-current resistance welded tube, alternating-current resistance welded tube
Forming method be continuous bend method, circular arc bending method or combination forming method.
The production technology of oil-gas transportation longitudinal submerged arc welded pipe the most according to claim 1, its feature
It is: the employing multifibres vertical masonry joint submerged arc welding technique described in step (4) carries out weldering and submerged arc outside weld in submerged arc,
Referring to that first outside weld uses carbon dioxide gas arc welding bottoming welding, then interior weldering uses the welding of little specification two-layer,
Outside weld uses big specification one layer welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610410773.6A CN105880952A (en) | 2016-06-03 | 2016-06-03 | Production process of longitudinal submerged arc welded pipe for oil and gas transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610410773.6A CN105880952A (en) | 2016-06-03 | 2016-06-03 | Production process of longitudinal submerged arc welded pipe for oil and gas transmission |
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| CN105880952A true CN105880952A (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610410773.6A Pending CN105880952A (en) | 2016-06-03 | 2016-06-03 | Production process of longitudinal submerged arc welded pipe for oil and gas transmission |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106624614A (en) * | 2016-10-11 | 2017-05-10 | 武汉钢铁股份有限公司 | Manufacturing process for large-diameter thick-wall high-strength welded tube |
| CN109277430A (en) * | 2018-10-30 | 2019-01-29 | 宝鸡石油钢管有限责任公司 | A kind of sledge dressization spiral submerged welded pipe production line |
| CN109955038A (en) * | 2017-12-26 | 2019-07-02 | 东莞市广信知识产权服务有限公司 | A kind of manufacture craft of sealing pipeline |
| CN111203614A (en) * | 2020-01-16 | 2020-05-29 | 燕山大学 | Device for assisting LSAW pipe welding process through pulse current and using method |
| CN111804752A (en) * | 2020-06-29 | 2020-10-23 | 湖南华菱湘潭钢铁有限公司 | Bar production line finishing area process route |
| CN113084459A (en) * | 2021-04-13 | 2021-07-09 | 中钢不锈钢管业科技山西有限公司 | Continuous intelligent forming process for stainless steel straight welded pipe |
| CN113199247A (en) * | 2021-03-29 | 2021-08-03 | 河北沧海核装备科技股份有限公司 | One-time forming device and method for longitudinal submerged arc welded steel pipe |
| CN113441959A (en) * | 2021-08-02 | 2021-09-28 | 山东福源管业有限公司 | Full-automatic spiral steel pipe anticorrosion integrated production line and production process |
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| CN104451440A (en) * | 2014-09-01 | 2015-03-25 | 宝鸡石油钢管有限责任公司 | High-plasticity longitudinal submerged arc welding tube for X70 thick-wall deep-sea pipeline and manufacturing method of high-plasticity longitudinal submerged arc welding tube |
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| EP2436472A1 (en) * | 2009-05-27 | 2012-04-04 | JFE Steel Corporation | Submerged arc welding method for steel plate |
| CN102172814A (en) * | 2011-01-10 | 2011-09-07 | 崔建立 | Method for manufacturing longitudinal submerged arc welded pipe |
| CN102233510A (en) * | 2011-05-23 | 2011-11-09 | 天津市裕兴钢管有限公司 | Production process of large-caliber straight-slit submerged-arc welding steel pipe |
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| CN103801809A (en) * | 2013-12-05 | 2014-05-21 | 合肥紫金钢管有限公司 | Large-diameter thick-wall multi-thread longitudinal submerged arc welding pipe made of No.35 steel and manufacturing technology thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106624614A (en) * | 2016-10-11 | 2017-05-10 | 武汉钢铁股份有限公司 | Manufacturing process for large-diameter thick-wall high-strength welded tube |
| CN106624614B (en) * | 2016-10-11 | 2019-08-23 | 武汉钢铁有限公司 | A kind of manufacturing process of the high-strength welded tube of heavy caliber thick wall |
| CN109955038A (en) * | 2017-12-26 | 2019-07-02 | 东莞市广信知识产权服务有限公司 | A kind of manufacture craft of sealing pipeline |
| CN109277430A (en) * | 2018-10-30 | 2019-01-29 | 宝鸡石油钢管有限责任公司 | A kind of sledge dressization spiral submerged welded pipe production line |
| CN111203614A (en) * | 2020-01-16 | 2020-05-29 | 燕山大学 | Device for assisting LSAW pipe welding process through pulse current and using method |
| CN111203614B (en) * | 2020-01-16 | 2021-05-25 | 燕山大学 | Device for assisting LSAW pipe welding process through pulse current and using method |
| CN111804752A (en) * | 2020-06-29 | 2020-10-23 | 湖南华菱湘潭钢铁有限公司 | Bar production line finishing area process route |
| CN113199247A (en) * | 2021-03-29 | 2021-08-03 | 河北沧海核装备科技股份有限公司 | One-time forming device and method for longitudinal submerged arc welded steel pipe |
| CN113084459A (en) * | 2021-04-13 | 2021-07-09 | 中钢不锈钢管业科技山西有限公司 | Continuous intelligent forming process for stainless steel straight welded pipe |
| CN113084459B (en) * | 2021-04-13 | 2023-04-21 | 中钢不锈钢管业科技山西有限公司 | Continuous intelligent forming process for stainless steel straight welded pipe |
| CN113441959A (en) * | 2021-08-02 | 2021-09-28 | 山东福源管业有限公司 | Full-automatic spiral steel pipe anticorrosion integrated production line and production process |
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Application publication date: 20160824 |