CN103394546A - Production method for longitudinal welded pipe - Google Patents
Production method for longitudinal welded pipe Download PDFInfo
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- CN103394546A CN103394546A CN201310366055XA CN201310366055A CN103394546A CN 103394546 A CN103394546 A CN 103394546A CN 201310366055X A CN201310366055X A CN 201310366055XA CN 201310366055 A CN201310366055 A CN 201310366055A CN 103394546 A CN103394546 A CN 103394546A
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Abstract
A disclosed production method for a longitudinal welded pipe successively comprises the following steps of hot-rolled coil decoiling, shearing and butt welding, looping, edge milling, coil flaw detection, cage roll forming, on-line pipe blank prewelding, welding of end tabs to pipe ends, on-line internal welding by employing submerged arc welding, on-line external welding by employing submerged arc welding, sizing and saw cutting, end tab removing, blowing and sweeping of welding slags, pipe end grinding, X-ray, expanding, chamfering, water pressing, ultrasonic flaw detection, X-ray, magnetic powder flaw detection, length measuring and weighing, mark spraying and warehousing. Practice proves that the production method of the longitudinal welded pipe is simple in operation and high in production efficiency.
Description
Technical field
The invention belongs to the ERW production technical field, specifically refer to a kind of ERW production method.
Background technology
The straight-line joint submerged arc welding tube production technology is very ripe in China, and its weld properties is good and higher than body thereby extensively promoted.Traditional straight-line joint submerged arc welding tube pipe-making method has JCOE and UOE, and which kind of method is all that individual hot rolled plate of cut lengths is passed through the forming machine moulding, then carries out submerged arc welding and produces.
Traditional straight-line joint submerged arc welding tube pipe-making method, its raw material can only be chosen individual hot rolled plate, or with hot rolled coil open flat, cut into single steel plate, and can not directly use hot rolled coil to carry out online formation rolling, serious impact the production efficiency of welded tube.
The patent No. is the production method that the 200710033068.X granted patent discloses a kind of large straight-line joint submerged arc welding tube, it adopts the continuous row-roll forming process of coiled strip, online prewelding, then utilize off-line automatic submerged arc welding to carry out interior weldering and the outside weld of welded tube, hole enlargement, hydraulic pressure, Non-Destructive Testing, thus realize the High-efficient Production of large straight-line joint submerged arc welding tube product.Although the submerged-arc welded (SAW) pipe production that this production method is more traditional has improved certain production efficiency, it still adopts off-line automatic submerged arc welding to carry out interior weldering and the outside weld of welded tube, and it is still that single welded tube pursues a welding processing that submerged-arc welding is produced, and has affected production efficiency.
In addition, the patent No. is that 201110003728.6 granted patent has been introduced a kind of straight-line joint submerged arc welding tube manufacture method, its key step comprises that steel band uncoiling, docking, plate edge machined, moulding, on-line continuous prewelding, Pipe Cutting, Lincoln weld are astute and able, finishing, it is characterized in that: described forming step adopts the forming method of alternating-current resistance welded tube, and the forming method of alternating-current resistance welded tube is continuous bend method, circular arc bending method or combination forming method.This manufacture method provides multiple forming method, but still adopts the production of off-line submerged-arc welded (SAW) pipe, has affected the production efficiency of welded tube.
Summary of the invention
It is a kind of simple to operate that purpose of the present invention will provide exactly, the ERW production method that production efficiency is high.
For achieving the above object, ERW production method of the present invention, its special character is: it comprises the following steps successively: the hot rolled coil uncoiling, shear butt welding, kink, mill limit, plate body flaw detection, row-roll forming process, online pipe prewelding, tube head weldering run-on tab, weldering in submerged-arc welding is online, the online outside weld of submerged-arc welding, the scale sawing, remove run-on tab, and welding slag purges, the pipe end polishing, X ray, hole enlargement, chamfered edge, hydraulic pressure, ultrasonic examination, X ray, magnetic powder inspection, survey long weighing, spray mark warehouse-in.
Further, described shearing butt welding refers to hot rolled coil crop, back-end crop, and then the volume head of the end of reel of last volume and a rear volume carries out butt welding, and the hot rolled coil of same specification is connected together.
Further, in described submerged-arc welding is online, during weldering, internal welding machine is arranged between prewelding and moulding, and internal welding machine stretches in pipe, and welding head is motionless, and the on-line operation by the welded tube pipe welds, in welding process, and first prewelding, rear interior weldering.
Also preferably, during the online outside weld of submerged-arc welding, the outside weld seat in the plane is put fixing, and the on-line operation by the welded tube pipe welds.
ERW production method of the present invention, adopt hot rolled coil as the welded tube forming raw material, at first hot rolled coil is carried out uncoiling, to hot rolled coil crop, back-end crop, then the volume head of the end of reel of last volume and a rear volume is carried out butt welding, the hot rolled coil of same specification is connected together; Hot rolled plate after uncoiling enters large-scale kink, can play the effect of the storage of raw materials and buffering; Hot rolled plate mills limit, plate body flaw detection by edge milling machines, enters the row-roll forming process unit, and utilizing row-roll forming process to make raw material continuously shaped is pipe; Pipe is carried out online prewelding, tube head weldering run-on tab, stretch into the submerged arc internal welding machine in moulding pipe flared end and carry out in online welding, then carry out the online outside weld of submerged-arc welding, scale sawing; First welded tube removed run-on tab, and welding slag purges, the pipe end polishing, then carries out ultrasonic examination, x-ray inspection; Welded Pipe carries out hole enlargement, and pipe end is carried out chamfered edge, and the water inlet press carries out pressure test; Carry out afterwards ultrasonic examination, x-ray inspection, magnetic powder inspection; Survey finally long weighing, with qualified welded tube spray mark warehouse-in.
characteristics of the present invention are: adopt hot rolled coil as raw material, reduced hot rolled coil is opened flat, the process of cutting, reduced production cost, simultaneously, adopt row-roll forming process+online prewelding+online submerged-arc welding process, make welded tube forming, prewelding, submerged-arc welding realizes continuous online production, greatly improved the production efficiency of straight-line joint submerged arc welding tube, in addition, production method of the present invention only need to be at moulding pipe top welding run-on tab when carrying out first production, first welded tube carried out when finishing is processed removing run-on tab, greatly reduced the welding run-on tab with respect to prior art, arc-extinguishing plate and the run-on tab of going out, the technique of arc-extinguishing plate, further improved production efficiency.
The specific embodiment
Below in conjunction with specific embodiment, ERW production method of the present invention is described in further detail.
A kind of production technology of Φ 323.9 * 8.7mm ERW comprises the following steps:
The hot rolled coil of choosing broadening and be 1020mm is raw material, at first hot rolled coil is carried out uncoiling, and to hot rolled coil crop 2m, back-end crop 2m, then the volume head of the end of reel of last volume and a rear volume carries out butt welding, and the hot rolled coil of same specification is connected together; Hot rolled plate after uncoiling enters large-scale kink, and large-scale kink plays the effect of the storage of raw materials and buffering; Hot rolled plate mills limit, plate body flaw detection by edge milling machines, enters the row-roll forming process unit, and utilizing row-roll forming process to make raw material continuously shaped is pipe; Pipe is carried out online prewelding, and then tube head weldering run-on tab, weld the online outside weld of submerged-arc welding in submerged-arc welding is online; Wherein, in submerged-arc welding is online, during weldering, internal welding machine is arranged between prewelding and moulding, and internal welding machine stretches in pipe, and welding head is motionless, and the on-line operation by the welded tube pipe welds, in welding process, and first prewelding, rear interior weldering; During the online outside weld of submerged-arc welding, the outside weld seat in the plane is put fixing, and the on-line operation by the welded tube pipe welds; Carry out online scale sawing, cut lengths is 12m again; Remove run-on tab, carry out welding slag purging, pipe end polishing, then carry out ultrasonic examination, x-ray inspection; Welded Pipe carries out hole enlargement, and pipe end is carried out chamfered edge, and the water inlet press carries out pressure test; Carry out afterwards ultrasonic examination, x-ray inspection, magnetic powder inspection; Survey finally long weighing, with qualified welded tube spray mark warehouse-in.
Claims (5)
1. ERW production method, it is characterized in that: it comprises the following steps successively: the hot rolled coil uncoiling, shear butt welding, kink, mill limit, plate body flaw detection, row-roll forming process, online pipe prewelding, tube head weldering run-on tab, weldering in submerged-arc welding is online, the online outside weld of submerged-arc welding, scale sawing, remove run-on tab, welding slag purges, the pipe end polishing, X ray, hole enlargement, chamfered edge, hydraulic pressure, ultrasonic examination, X ray, magnetic powder inspection, survey long weighing, spray mark warehouse-in.
2. ERW production method according to claim 1 is characterized in that: described shearing butt welding refers to hot rolled coil crop, back-end crop, and then the volume head of the end of reel of last volume and a rear volume carries out butt welding, and the hot rolled coil of same specification is connected together.
3. ERW production method according to claim 1 and 2, it is characterized in that: while welding in described submerged-arc welding is online, internal welding machine is arranged between prewelding and moulding, internal welding machine stretches in pipe, welding head is motionless, and the on-line operation by the welded tube pipe welds, in welding process, first prewelding, rear interior weldering.
4. ERW production method according to claim 1 and 2, it is characterized in that: during the online outside weld of submerged-arc welding, the outside weld seat in the plane is put fixing, and the on-line operation by the welded tube pipe welds.
5. ERW production method according to claim 3, it is characterized in that: during the online outside weld of submerged-arc welding, the outside weld seat in the plane is put fixing, and the on-line operation by the welded tube pipe welds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310366055.XA CN103394546B (en) | 2013-08-21 | 2013-08-21 | Production method for longitudinal welded pipe |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310366055.XA CN103394546B (en) | 2013-08-21 | 2013-08-21 | Production method for longitudinal welded pipe |
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| CN103394546A true CN103394546A (en) | 2013-11-20 |
| CN103394546B CN103394546B (en) | 2015-06-03 |
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| CN201310366055.XA Expired - Fee Related CN103394546B (en) | 2013-08-21 | 2013-08-21 | Production method for longitudinal welded pipe |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104999277A (en) * | 2015-07-13 | 2015-10-28 | 天津钢管集团股份有限公司 | Production method of anticorrosion wear-resistant stainless steel HFW welding pipe with outer diameter of 108-660.4mm |
| CN105382545A (en) * | 2015-12-11 | 2016-03-09 | 河北沧海核装备科技股份有限公司 | Production equipment and technique for plate-strip dual-use continuous production straight-slit submerged-arc welded pipes |
| CN105880809A (en) * | 2014-11-14 | 2016-08-24 | 宋国栋 | Online upward multi-wire submerged-arc welding process for medium longitudinally-welded steel pipe, and used welding pad roll |
| CN106239168A (en) * | 2016-08-01 | 2016-12-21 | 葫芦岛市钢管工业有限公司 | A kind of pre-soldering method of the ERW for LSAW steel pipe's production |
| CN113118230A (en) * | 2021-04-21 | 2021-07-16 | 中冶赛迪技术研究中心有限公司 | Closed-type steel hot roll bending production composite process |
| CN116167396A (en) * | 2023-01-09 | 2023-05-26 | 太原重工股份有限公司 | Material tracking method for straight welded pipe |
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| JPS59113921A (en) * | 1982-12-20 | 1984-06-30 | Nisshin Steel Co Ltd | Double square tube and its manufacturing device |
| JPH0775876A (en) * | 1993-09-03 | 1995-03-20 | Sumitomo Metal Ind Ltd | Tube manufacturing welding method |
| CN1490097A (en) * | 2002-10-15 | 2004-04-21 | 赵春友 | Production of steel pipes with straight central seaming and primary shaping, final shaping and welder |
| CN1781655A (en) * | 2005-09-30 | 2006-06-07 | 番禺珠江钢管有限公司 | Process for producing welded pipe |
| CN101214511A (en) * | 2007-12-29 | 2008-07-09 | 番禺珠江钢管有限公司 | Large straight-line joint submerged arc welding tube fast production process |
| CN102000716A (en) * | 2010-11-30 | 2011-04-06 | 大连三高科技发展有限公司 | Production line of major diameter straight welded pipe |
| CN102274871A (en) * | 2011-08-02 | 2011-12-14 | 太原华科信冶金成套设备有限公司 | Method and equipment for producing longitudinal submerged arc welded pipe |
| CN102294553A (en) * | 2011-07-21 | 2011-12-28 | 北京工业大学 | Magnesium alloy brazing filler metal containing rare-earth element Er and preparation method thereof |
| CN102294571A (en) * | 2010-06-25 | 2011-12-28 | 上海月月潮钢管制造有限公司 | Method for manufacturing high-temperature and high-pressure steel pipe |
-
2013
- 2013-08-21 CN CN201310366055.XA patent/CN103394546B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59113921A (en) * | 1982-12-20 | 1984-06-30 | Nisshin Steel Co Ltd | Double square tube and its manufacturing device |
| JPH0775876A (en) * | 1993-09-03 | 1995-03-20 | Sumitomo Metal Ind Ltd | Tube manufacturing welding method |
| CN1490097A (en) * | 2002-10-15 | 2004-04-21 | 赵春友 | Production of steel pipes with straight central seaming and primary shaping, final shaping and welder |
| CN1781655A (en) * | 2005-09-30 | 2006-06-07 | 番禺珠江钢管有限公司 | Process for producing welded pipe |
| CN101214511A (en) * | 2007-12-29 | 2008-07-09 | 番禺珠江钢管有限公司 | Large straight-line joint submerged arc welding tube fast production process |
| CN102294571A (en) * | 2010-06-25 | 2011-12-28 | 上海月月潮钢管制造有限公司 | Method for manufacturing high-temperature and high-pressure steel pipe |
| CN102000716A (en) * | 2010-11-30 | 2011-04-06 | 大连三高科技发展有限公司 | Production line of major diameter straight welded pipe |
| CN102294553A (en) * | 2011-07-21 | 2011-12-28 | 北京工业大学 | Magnesium alloy brazing filler metal containing rare-earth element Er and preparation method thereof |
| CN102274871A (en) * | 2011-08-02 | 2011-12-14 | 太原华科信冶金成套设备有限公司 | Method and equipment for producing longitudinal submerged arc welded pipe |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105880809A (en) * | 2014-11-14 | 2016-08-24 | 宋国栋 | Online upward multi-wire submerged-arc welding process for medium longitudinally-welded steel pipe, and used welding pad roll |
| CN104999277A (en) * | 2015-07-13 | 2015-10-28 | 天津钢管集团股份有限公司 | Production method of anticorrosion wear-resistant stainless steel HFW welding pipe with outer diameter of 108-660.4mm |
| CN105382545A (en) * | 2015-12-11 | 2016-03-09 | 河北沧海核装备科技股份有限公司 | Production equipment and technique for plate-strip dual-use continuous production straight-slit submerged-arc welded pipes |
| CN106239168A (en) * | 2016-08-01 | 2016-12-21 | 葫芦岛市钢管工业有限公司 | A kind of pre-soldering method of the ERW for LSAW steel pipe's production |
| CN113118230A (en) * | 2021-04-21 | 2021-07-16 | 中冶赛迪技术研究中心有限公司 | Closed-type steel hot roll bending production composite process |
| CN116167396A (en) * | 2023-01-09 | 2023-05-26 | 太原重工股份有限公司 | Material tracking method for straight welded pipe |
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| Publication number | Publication date |
|---|---|
| CN103394546B (en) | 2015-06-03 |
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Effective date of registration: 20170720 Address after: 430083, Hubei Wuhan Qingshan District Factory No. 2 Gate joint stock company organs Patentee after: Wuhan iron and Steel Company Limited Address before: 430080 Hubei, Wuhan, Wuchang Friendship Road, No. 999, block A, floor 15 Patentee before: Wuhan Iron & Steel (Group) Corp. |
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Granted publication date: 20150603 Termination date: 20190821 |
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