CN101972915B - Method for preparing corrosion-resistant non-ferrous metal pipeline - Google Patents
Method for preparing corrosion-resistant non-ferrous metal pipeline Download PDFInfo
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- CN101972915B CN101972915B CN2010102451680A CN201010245168A CN101972915B CN 101972915 B CN101972915 B CN 101972915B CN 2010102451680 A CN2010102451680 A CN 2010102451680A CN 201010245168 A CN201010245168 A CN 201010245168A CN 101972915 B CN101972915 B CN 101972915B
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Abstract
The invention discloses a method for preparing a corrosion-resistant non-ferrous metal pipeline, which comprises the steps of: preforming, sticking and shaping, and welding a longitudinal seam. By the method, a large-diameter rare non-ferrous metal pipeline can be manufactured, the molding effect is good and the molding efficiency is high.
Description
Technical field
The present invention relates to chemical industry, medicine, petrochemical industry anticorrosion with pipeline engineering and anti-corrosion pressure vessel with fields such as pipelines, be specifically related to anti-corrosion extraordinary non-ferrous metal material pipeline molding method for preparing such as a kind of titanium, nickel, zirconium.
Background technology
In deep-etching in chemical industry, medicine production and the special electrochemical corrosion environment; Need to use special material pipeline and pipe fittings such as titanium, nickel; And present pipe production technology is being handled larger-diameterly when the seam welding pipe is arranged, and is main with carbon steel material mainly; The tubulation form is welded with strip spiral charging moulding automatically and the automatic weldering of plate coiled material charging longitudinal joint moulding is main, and it is main that the stainless steel pipeline mainly welds with seamless stone roller system, cold-drawn and the differential of the arc continuously automatically.
The metal material price is than expensive many of carbon steel, stainless steel because titanium, nickel etc. are able to bear strong corrosion; And weldering system process has also required the inert gas environment protection, therefore than major diameter, as more than the DN 150-300 to the special material pipeline of this rare non-ferrous metal of DN 1000mm; Present domestic also the do not have more regular production line form and the combination of technology pattern; Basically be in manual operations, vertical many ribs of the trace curved surface forming half arc voltage system of hydraulic press auxiliary short section punching press or bender, during assembly welding the segmentation circumferential weld continue, longitudinal joint zigzag weld; Not only efficient is low, and moulding continues when being 3 meters and even 6-9 rice length, and tubular distortion is straight, outward appearance feels not good enough.
Summary of the invention
Technical problem to be solved by this invention is: special non-ferrous metal welded pipe road moulding process efficient such as existing larger-diameter titanium, nickel are low, the finished product cast is not straight.
For solving the problems of the technologies described above, the technical scheme that the present invention adopted is: the preparation method of a kind of anti-corrosion non-ferrous metal material pipeline moulding may further comprise the steps: 1) preformed: the load such as sheet material that adopt the triple axle major axis that sanction is cut are bent and are rolled; Said triple axle major axis comprises a pressure roll and two carrying rollers, and pressure roll is positioned at two carrying roller center upper portion; Sheet material is placed between pressure roll and the carrying roller, and carrying roller rolls power is provided, and pressure roll provides pressure, makes the tangent even rolling of sheet material negative camber round surface outside pressure roll, reaches crooked preformed; 2) buckling die shaping: through the buckling die frock with preformed sheet material by entad driving pressure outward, making crooked sheet material joint close is the pipeline of standard cylindrical curvature size, and fixes in commissure spot welding; Said buckling die frock is divided upper die and lower die; 3) welding longitudinal joint: the pipeline after the buckling die shaping is put into the grooved weldering bar of automatic welder(welding machine), said automatic welder(welding machine) also comprise track and with vertically disposed two carriages of track; Two carriage horizontal support pipelines also carry pipeline weight, establish the gas shield box in the grooved weldering bar, and the longitudinal joint that the gas shield box is close to pipeline moves the enforcement welding protection at random.
Adopt existing triple axle major axis to carry out pipeline preformed; Can guarantee preferably that the sheet material that noble metal such as titanium makes is evenly stressed in pressing process; Preformed sheet material curved surface flexibility is consistent, for follow-up buckling die shaping provides good conditions; The buckling die frock of existing upper and lower mould fit structure is adopted in the buckling die shaping, and it adapts to diameter specifications from DN 150-1000mm; Adopt existing automatic welder(welding machine) during the welding longitudinal joint, solved the problem that needs inert gas shielding when titanium, nickel etc. are able to bear strong corrosion Metal Material Welding, and the carriage that is provided with on its track can effectively be avoided the stressed flexural deformation of flute profile weldering bar.
For making pipe ends smooth, also carry out following steps after the welding longitudinal joint finishes: the smooth cutting of end face, promptly smooth cutting is carried out at pipeline two of finishing of butt welding system.
For guaranteeing the quality of pipeline finished product, after finishing, the smooth cutting of end face also is carried out to the pipe leak detection, by the hydraulic test of pipeline device pipe is carried out water pressure test leak detection after promptly pipeline is made and finished.
As a kind of improvement project of the present invention, the smooth cutting of end face adopts chamfering machine to cut.
As another kind of improvement project of the present invention, the interior dress of said buckling die frock die shoe is range upon range of fixing, and buckling die frock vertically district is respectively preparatory plastic section, excessive section, curved surface joint close section.
Advantage of the present invention is: can make the pipeline of large diameter rare nonferrous materials, and good forming effect, shaping efficiency is high.
Description of drawings
Fig. 1 is the structural representation of triple axle major axis of the present invention;
Fig. 2 is the structural representation of buckling die frock of the present invention;
Fig. 3 is the cutaway view of Fig. 2 along the A-A face;
Fig. 4 is the structural representation of automatic welder(welding machine) of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described further.
As shown in Figure 1; The titanium plate 1 that sanction is cut places between pressure roll 2 and the holder axle 3; After the 1 plate face limit precompressed of titanium plate is curved; Through the friction rolling power that produces between sheet material and the roll shaft, two carrying rollers 3 drive titanium tangent even rolling of plate 1 negative camber round surface along pressure roll 2 outside and crooked preformed under the two-sided extruding of pressure roll 2 and holder spools 3 under the oil motor power drive.
As shown in Figures 2 and 3; The buckling die frock is divided patrix 4, counterdie 5; Adapt to the sheet material of diameter specifications from DN 150-1000mm, the buckling die frock vertically is divided into excessively section 10-curved surface joint close section 11 of preparatory plastic section 9-that radius reduces successively, divides three sections inferior shapings in elasticity and inferior plastic range by outside entad drive pressure; Forcing the bent plate joint close is the pipeline of standard cylindrical curvature size, and fixedly moulding of spot welding.
As shown in Figure 4, with the weldering bar 6 of packing into of the semi-finished product after the buckling die shaping, two carriages 7 on the track 8 support, carry pipeline weight with pipe level; Avoiding length is 9.5m; Diameter is 120mm, and wall thickness is the weldering bar 6 stressed flexural deformations of 7mm, establishes the gas shield box in the grooved weldering bar 6; The longitudinal joint that the gas shield box is close to pipe moves back and forth, and implements welding protection.
After pipeline welding finishes, be placed on the chamfering machine table top, smooth cutting is carried out at pipe end two, obtain finished product.This finished product carries out water pressure test leak detection by the hydraulic test of pipeline device to pipe, and the leak test that the pipeline of variant diameter specifications, hydraulic test pressure grade, the demands of different of using by dispatching from the factory are 0.4--1.6MPa respectively can use sale after the assay was approved.
Claims (5)
1. the preparation method of anti-corrosion non-ferrous metal material pipeline moulding is characterized in that may further comprise the steps:
1) preformed: the load such as sheet material that adopt the triple axle major axis that sanction is cut are bent and are rolled; Said triple axle major axis comprises a pressure roll and two carrying rollers, and pressure roll is positioned at two carrying roller center upper portion; Sheet material is placed between pressure roll and the carrying roller, and carrying roller rolls power is provided, and pressure roll provides pressure, makes the tangent even rolling of sheet material negative camber round surface outside pressure roll, reaches crooked preformed, and the diameter specifications of said sheet material is DN150-1000mm;
2) buckling die shaping: through the buckling die frock with preformed sheet material by entad driving pressure outward, making crooked sheet material joint close is the pipeline of standard cylindrical curvature size, and fixes in commissure spot welding; Said buckling die frock is divided upper die and lower die;
3) welding longitudinal joint: the pipeline after the buckling die shaping is put into the grooved weldering bar of automatic welder(welding machine), said automatic welder(welding machine) also comprise track and with vertically disposed two carriages of track; Two carriage horizontal support pipelines also carry pipeline weight, establish the gas shield box in the grooved weldering bar, and the longitudinal joint that the gas shield box is close to pipeline moves the enforcement welding protection at random.
2. the preparation method of anti-corrosion non-ferrous metal material pipeline according to claim 1 moulding, also carry out following steps after it is characterized in that welding longitudinal joint and finishing: the smooth cutting of end face, promptly smooth cutting is carried out at pipeline two of finishing of butt welding system.
3. the preparation method of anti-corrosion non-ferrous metal material pipeline according to claim 2 moulding is characterized in that: also be carried out to the pipe leak detection after the smooth cutting of end face finishes, by the hydraulic test of pipeline device pipe carried out water pressure test leak detection after promptly pipeline is made and finished.
4. the preparation method of anti-corrosion non-ferrous metal material pipeline according to claim 2 moulding is characterized in that: the smooth cutting of end face adopts chamfering machine to cut.
5. the preparation method of anti-corrosion non-ferrous metal material pipeline according to claim 1 and 2 moulding is characterized in that: the interior dress of said buckling die frock die shoe is range upon range of fixing, and buckling die frock vertically district is respectively preparatory plastic section, excessive section, curved surface joint close section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102451680A CN101972915B (en) | 2010-08-04 | 2010-08-04 | Method for preparing corrosion-resistant non-ferrous metal pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102451680A CN101972915B (en) | 2010-08-04 | 2010-08-04 | Method for preparing corrosion-resistant non-ferrous metal pipeline |
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| Publication Number | Publication Date |
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| CN101972915A CN101972915A (en) | 2011-02-16 |
| CN101972915B true CN101972915B (en) | 2012-08-29 |
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| CN2010102451680A Active CN101972915B (en) | 2010-08-04 | 2010-08-04 | Method for preparing corrosion-resistant non-ferrous metal pipeline |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102441591A (en) * | 2011-11-30 | 2012-05-09 | 攀钢集团工程技术有限公司 | Process for manufacturing zero-allowance pressure head furnace shell with metal plates |
| CN103659167A (en) * | 2012-09-11 | 2014-03-26 | 北京首宏钢重型装备技术有限公司 | Pipe fitting machining method |
| CN102941257B (en) * | 2012-11-23 | 2014-12-17 | 贵州安大航空锻造有限责任公司 | Blanking-making method achieved by bending section bar of alpha-beta two-phase titanium alloy thin-wall ring piece |
| CN103894457B (en) * | 2012-12-28 | 2016-08-03 | 南通大通宝富风机有限公司 | Veneer reeling machine with pre-bending device |
| EP3006133B1 (en) * | 2013-05-24 | 2017-08-16 | JFE Steel Corporation | Method for producing steel pipe |
| CN104339124B (en) * | 2013-08-05 | 2016-08-10 | 上海通华不锈钢压力容器工程有限公司 | A kind of rustless steel cylinder multi-curvature forming method |
| CN105033568A (en) * | 2015-05-19 | 2015-11-11 | 北京星航机电装备有限公司 | Forming method of titanium alloy oil tank shell |
| CN109048225B (en) * | 2018-09-06 | 2020-08-28 | 黄骅市润宇汽车配件有限公司 | Manhole processing technology of liquid storage tank |
| CN117086578B (en) * | 2023-10-17 | 2024-02-02 | 成都先进金属材料产业技术研究院股份有限公司 | Titanium alloy cylinder and cold roll forming method thereof |
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| US7784182B2 (en) * | 2006-11-08 | 2010-08-31 | General Electric Company | System for manufacturing a rotor having an MMC ring component and a unitary airfoil component |
| CN100445028C (en) * | 2007-02-09 | 2008-12-24 | 青静 | Manufacturing process for porous opening metal pipe |
| CN100469517C (en) * | 2007-05-29 | 2009-03-18 | 江阴新华宏铜业有限公司 | Method for preparing copper and nickel alloy seamless copper tube |
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