CN103801809B - No. 35 steel heavy caliber thick wall multifibres longitudinal submerged arc welded pipes and manufacturing technology thereof - Google Patents
No. 35 steel heavy caliber thick wall multifibres longitudinal submerged arc welded pipes and manufacturing technology thereof Download PDFInfo
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- CN103801809B CN103801809B CN201310652231.6A CN201310652231A CN103801809B CN 103801809 B CN103801809 B CN 103801809B CN 201310652231 A CN201310652231 A CN 201310652231A CN 103801809 B CN103801809 B CN 103801809B
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- welding
- submerged arc
- multifibres
- heavy caliber
- thick wall
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Classifications
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- 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
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
- B23K33/004—Filling of continuous seams
- B23K33/006—Filling of continuous seams for cylindrical workpieces
-
- 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
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/025—Seam welding; Backing means; Inserts for rectilinear seams
- B23K9/0253—Seam welding; Backing means; Inserts for rectilinear seams for the longitudinal seam of tubes
-
- 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)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a kind of No. 35 steel heavy caliber thick wall multifibres longitudinal submerged arc welded pipe production technologies; including No. 35 steel heavy wall longitudinal submerged arc welded pipes and multifibres vertical masonry joint submerged arc welding technology thereof; No. 35 steel plates that described phosphorus content is high pass through ultrasonic flaw detection, machining groove, JCOE molding; it is processed into " O " type; then described multifibres vertical masonry joint submerged arc welding technique is used to weld; i.e. first outside weld uses carbon dioxide gas arc welding bottoming welding; then in, weldering uses the welding of little specification two-layer, and outside weld uses big specification one layer welding.Operation of the present invention is simple, a kind of No. 35 novel steel heavy caliber thick wall longitudinal submerged arc welded pipes and manufacturing technology thereof are provided, No. 35 steel are introduced heavy caliber thick wall longitudinal submerged arc welded pipe field, enrich the kind of longitudinal submerged arc welded pipe material, expand the range of application (welded tube can be made for coal dust, Ore, the conveying of sandstone) of heavy caliber thick wall multi-wire submerged-arc Coiling Welded Pipe, improve the performance of heavy caliber thick wall multi-wire submerged-arc Coiling Welded Pipe greatly.
Description
Technical field
The present invention relates to a kind of No. 35 steel heavy caliber longitudinal submerged arc welded pipes and manufacturing technology thereof, belong to metallic plate processing neck
Territory.
Background technology
No. 35 steel belong to medium carbon steel, and compared with mild steel, owing to phosphorus content increases, intensity is high, and plasticity is deteriorated, hardenability
By force, weldability is poor, is widely used in the various forging of manufacture and hot pressing part, cold drawn and upset steel, in seamless steel pipe, machine-building
Part, such as bent axle, rotating shaft, pivot pin, lever, connecting rod, crossbeam, sleeve, wheel rim, packing ring and screw, nut, motorbike frame
Deng.
Difficulty during welding is to ensure weld seam and mother metal equal strength, avoids the generation of pore and crackle again.Weldering
Scoop out the welding method selecting thermal weld stress easy to control and less, such as SMAW, carbon dioxide gas arc welding, argon arc
Welderings etc., the most do not recommend to use vertical masonry joint submerged arc welding.The most domestic No. 35 steel welding is used alone manual electric arc welding welding mostly
Or carbon dioxide gas arc welding welds, also simply with stick electrode welding or carbon dioxide gas arc welding under a few cases
Taking the end, monofilament submerged-arc welding capping, the slope type of welding uses the U-shaped groove reducing fusion ratio.
Longitudinal submerged arc welded pipe is to use JCOE steel pipe forming, one or two weld seams, submerged-arc welding process, specification limit
Steel pipe from external diameter 325mm to 1420mm.Straight-line joint submerged arc welding tube product performs the low-pressure fluid steel pipe mark of GB/T3091-2008
Accurate, GB/T9711-2011 oil natural gas pipe performs standard, API5L (45 editions) API Std, ASTM A252
The standards such as Welding Structure steel pipe U.S. execution standard.The production technology of straight-line joint submerged arc welding tube flexibly can any rule in production range
Lattice and wall thickness.Straight-line joint submerged arc welding tube sharpest edges are that and can produce the most fertile specifications and models of seamless steel pipe.Vertical masonry joint buries
Arc-welded pipe production cost is the biggest compared with the competitively priced space of seamless steel pipe.Straight-line joint submerged arc welding tube Heavy Type Steel Structure work the most at home
Journey and fluid line engineering, obtain the application of wide model in the piling work of basis.
Summary of the invention
It is an object of the invention to provide a kind of No. 35 big mouths of steel of one novel, that low cost, high efficiency, range are wide
Footpath heavy wall multifibres longitudinal submerged arc welded pipe production technology, takes inside and outside multiplewire submerged arc welding solder technology, and internal groove is more than outer slope
The double-Y shaped groove of mouth, weld preheating and the technology of post weld heat treatment.
The concrete technical scheme of the present invention is as follows:
A kind of No. 35 steel heavy caliber thick wall multifibres longitudinal submerged arc welded pipe production technologies, No. 35 thickness that described phosphorus content is high
Steel plate passes through ultrasonic flaw detection, machining groove, JCOE molding, is processed into " O " type, and the multifibres vertical masonry joint described in employing buries
Welding technology welds, and i.e. first outside weld uses carbon dioxide gas arc welding bottoming welding, and then interior weldering uses little specification two
Layer welding, outside weld uses big specification one layer welding, and the heavy wall submerged-arc welding steel pipe bevel for welding of described No. 35 steel makings of employing uses
Double-Y shaped groove, the degree of depth of described double-Y shaped groove internal groove is more than outer groove depth, and root face is 2-3mm.
No. 35 described steel heavy wall longitudinal submerged arc welded pipe weld preheatings, post weld heat treatment.
Beneficial effects of the present invention:
Operation of the present invention is simple, it is provided that a kind of No. 35 novel steel heavy caliber thick wall longitudinal submerged arc welded pipes and manufacture skill thereof
No. 35 steel are introduced heavy caliber thick wall longitudinal submerged arc welded pipe field, enrich the kind of longitudinal submerged arc welded pipe material by art, expand
Big the range of application of heavy caliber thick wall multi-wire submerged-arc Coiling Welded Pipe (welded tube can be made for coal dust, Ore, the conveying of sandstone), greatly
The performance (increasing its wearability, plasticity and toughness etc.) improving heavy caliber thick wall multi-wire submerged-arc Coiling Welded Pipe.
Accompanying drawing explanation
Fig. 1 is the process chart of the present invention.
Fig. 2 is the bevel for welding figure of the present invention.
Fig. 3 is the weld seam heat treatment schematic diagram of the present invention.
Fig. 4 is No. 35 steel heavy caliber thick wall multifibres longitudinal submerged arc welded pipe hardness tests.
Detailed description of the invention
A kind of No. 35 steel heavy caliber thick wall multifibres longitudinal submerged arc welded pipe production technologies, No. 35 thickness that described phosphorus content is high
Steel plate passes through ultrasonic flaw detection, machining groove, JCOE molding, is processed into " O " type, and the multifibres vertical masonry joint described in employing buries
Welding technology welds, and i.e. first outside weld uses carbon dioxide gas arc welding bottoming welding, and then interior weldering uses little specification two
Layer welding, outside weld uses big specification one layer welding, and the heavy wall submerged-arc welding steel pipe bevel for welding of described No. 35 steel makings of employing uses
Double-Y shaped groove, the degree of depth of described double-Y shaped groove internal groove is more than outer groove depth, and root face is 2-3mm, and No. 35 steel heavy walls are straight
Seam submerged-arc welding steel pipe weld preheating, post weld heat treatment.
According to process chart and the bevel for welding of Fig. 2 of Fig. 1, in using, outside weld mariages welds, and weld preheating is welded
After-baking, has manufactured No. 35 steel heavy caliber longitudinal submerged arc welded pipes that a collection of specification is φ 800 × 18 × 6000mm, and here is
Parameter in manufacture process and the data having manufactured rear Physical Chemistry Experiment analysis.
One No. 35 steel heavy caliber thick wall multifibres longitudinal submerged arc welded pipe welding parameters of table
Two No. 35 steel heavy caliber thick wall multifibres longitudinal submerged arc welded pipe body spectrum analyses of table
Three No. 35 steel heavy caliber thick wall multifibres longitudinal submerged arc welded pipe weld seam spectrum analyses of table
Four No. 35 steel heavy caliber thick wall multifibres longitudinal submerged arc welded pipe tension tests of table
Five No. 35 steel heavy caliber thick wall many longitudinal submerged arc welded pipes guided bend tests of table
Six No. 35 steel heavy caliber thick wall multifibres longitudinal submerged arc welded pipe Charpy-type tests of table
Seven No. 35 steel heavy caliber thick wall multifibres longitudinal submerged arc welded pipe hardness tests of table
Claims (1)
1. one kind No. 35 steel heavy caliber thick wall multifibres longitudinal submerged arc welded pipe production technologies, it is characterised in that: phosphorus content is high
No. 35 steel plates, by ultrasonic flaw detection, machining groove, JCOE molding, are processed into " O " type, then weld it
Connecing, first use carbon dioxide gas arc welding bottoming welding, then use multifibres vertical masonry joint submerged arc welding technique to weld, interior weldering is adopted
Welding by little specification two-layer, outside weld uses big specification one layer welding, and the heavy caliber thick wall multifibres using No. 35 steel plates to manufacture is straight
Seam submerged-arc welding steel pipe bevel for welding uses double-Y shaped groove, and the degree of depth of described double-Y shaped groove internal groove is more than outer groove depth,
Root face is 2-3mm；The heavy caliber thick wall multifibres longitudinal submerged arc welded pipe weld preheating that No. 35 described steel plates manufacture, postwelding heat
Process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310652231.6A CN103801809B (en) | 2013-12-05 | 2013-12-05 | No. 35 steel heavy caliber thick wall multifibres longitudinal submerged arc welded pipes and manufacturing technology thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310652231.6A CN103801809B (en) | 2013-12-05 | 2013-12-05 | No. 35 steel heavy caliber thick wall multifibres longitudinal submerged arc welded pipes and manufacturing technology thereof |
Publications (2)
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| CN103801809A CN103801809A (en) | 2014-05-21 |
| CN103801809B true CN103801809B (en) | 2016-08-17 |
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| CN104162731A (en) * | 2014-05-24 | 2014-11-26 | 安徽省特种设备检测院 | L555M pipeline steel combination welding method |
| CN105880809B (en) * | 2014-11-14 | 2018-06-12 | 宋国栋 | Middle steel pipes with straight upward multi-wire submerged-arc Welding and the bonding pad roll used online |
| CN106989216A (en) * | 2016-01-20 | 2017-07-28 | 浙江三花智能控制股份有限公司 | The processing method of pipe fitting body, pipe fitting and pipe fitting |
| CN105643048A (en) * | 2016-03-31 | 2016-06-08 | 合肥紫金钢管有限公司 | Manufacturing technology for long large-diameter LSAW (longitudinal submerged arc welding) pile pipe for ocean platform |
| CN105880952A (en) * | 2016-06-03 | 2016-08-24 | 合肥紫金钢管股份有限公司 | Production process of longitudinal submerged arc welded pipe for oil and gas transmission |
| CN107538142B (en) * | 2016-06-27 | 2019-11-01 | 扬州市通宇压力容器有限公司 | A kind of welding procedure of straight seam welded pipe |
| 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 |
| CN108747216A (en) * | 2018-06-01 | 2018-11-06 | 江阴市三和重工钢制品有限公司 | The manufacturing process of No. 35 steel submerged-arc welded (SAW) pipes of wear-resisting dredging |
| CN109454316A (en) * | 2018-11-02 | 2019-03-12 | 合肥紫金钢管股份有限公司 | High temperature high voltage resistant high alloy submerged-arc welding steel pipe welding procedure |
| CN109530855B (en) * | 2018-12-24 | 2021-09-10 | 合肥紫金钢管股份有限公司 | Welding method of large-opening longitudinal submerged arc welded steel pipe for offshore wind power |
| CN110238485A (en) * | 2019-05-14 | 2019-09-17 | 江苏圣珀新材料科技有限公司 | A kind of welding method of tubular material inside weld |
| CN112276311A (en) * | 2020-09-03 | 2021-01-29 | 海洋石油工程（青岛）有限公司 | Assembly welding process for ultra-large-diameter steel piles |
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| JPS55112181A (en) * | 1979-02-23 | 1980-08-29 | Nippon Kokan Kk <Nkk> | Welding method for production of large-diameter thick-walled steel pipe |
| CN101204720B (en) * | 2007-12-10 | 2010-11-24 | 中国石油集团渤海石油装备制造有限公司 | Manufacture method of X80 pipeline JCOE direct sew submerged arc welding tube |
| JP2009214127A (en) * | 2008-03-10 | 2009-09-24 | Jfe Steel Corp | Submerged arc welding method for steel material |
| JP5239900B2 (en) * | 2009-01-27 | 2013-07-17 | Ｊｆｅスチール株式会社 | Multi-electrode submerged arc welding method for steel |
| CN102233510B (en) * | 2011-05-23 | 2016-06-08 | 天津市裕兴钢管有限公司 | Heavy caliber longitudinal submerged arc welded pipe production technique |
| CN102248023A (en) * | 2011-08-05 | 2011-11-23 | 中国石油集团渤海石油装备制造有限公司 | Method for manufacturing X70 steel-level large deformation-resistant longitudinally submerged arc welding pipe |
| CN102950432B (en) * | 2012-11-16 | 2016-02-03 | 中国石油集团渤海石油装备制造有限公司 | Q245R vertical masonry joint submerged-arc welding natural gas vent pipe manufacturing method |
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| CP01 | Change in the name or title of a patent holder |
Address after: Beijing Lu, Baohe Industrial District of Hefei City, Anhui Province, No. 31 230051 Patentee after: Hefei Ziking Pipe Inc. Address before: Beijing Lu, Baohe Industrial District of Hefei City, Anhui Province, No. 31 230051 Patentee before: HeFei Ziking Steel Pipe Inc. |
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| CP01 | Change in the name or title of a patent holder | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Large-diameter thick-wall multi-thread longitudinal submerged arc welding pipe made of No.35 steel and manufacturing technology thereof Effective date of registration: 20171222 Granted publication date: 20160817 Pledgee: Hefei Xingtai financing guarantee Group Limited Pledgor: Henan Ziking Pipe Inc. Registration number: 2017340000444 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20181023 Granted publication date: 20160817 Pledgee: Hefei Xingtai financing guarantee Group Limited Pledgor: Henan Ziking Pipe Inc. Registration number: 2017340000444 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |