CN105246613B - The manufacture method of steel pipe - Google Patents
The manufacture method of steel pipe Download PDFInfo
- Publication number
- CN105246613B CN105246613B CN201380076836.3A CN201380076836A CN105246613B CN 105246613 B CN105246613 B CN 105246613B CN 201380076836 A CN201380076836 A CN 201380076836A CN 105246613 B CN105246613 B CN 105246613B
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- Prior art keywords
- expander
- steel pipe
- pipe
- ratio
- drift
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/01—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments
- B21D5/015—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments for making tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/08—Making tubes with welded or soldered seams
- B21C37/0815—Making tubes with welded or soldered seams without continuous longitudinal movement of the sheet during the bending operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- B21D3/14—Recontouring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/08—Tube expanders
- B21D39/20—Tube expanders with mandrels, e.g. expandable
Abstract
The manufacture method of steel pipe, including following operation：Molding procedure, is drum using buckling mode by steel plate forming, and the buckling mode is the drift of the outer peripheral face for having circular arc cross-sections using top ends, to make to depress steel plate in the way of the width end of steel plate is opposite each other；Welding sequence, the width end of steel plate is welded with abutting each other；Expansion process, expander is carried out using pipe expander from the inner side of steel pipe, the pipe expander is configured with multiple expanding dies of the outer peripheral face with circular arc cross-sections in circumferencial direction, the radius of curvature of the outer peripheral face of expanding die with respect to the radius of target of the inner surface of the steel pipe ratio be expander R when the outer peripheral face in punch tip portion radius of curvature with respect to the radius of target of the inner surface of steel pipe ratio i.e. drift R ratio both less than 1, expander R when drift R than meet regulation conditional.Thus, expanding die will not be made to crack damage and can just manufactures the high steel pipe of roundness.
Description
Technical field
The present invention relates to the manufacturer of the steel pipe including the expansion process that carry out expander using pipe expander from inner side to steel pipe
Method, the pipe expander are configured with multiple expanding dies of the outer peripheral face with circular arc cross-sections in circumferencial direction.
Background technology
Generally, the manufacturing process of the UOE steel pipe of pipe for oil well use, line pipe (line pipe) use etc. includes following operation：?
The operation of retaining wall on slope (edge preparation) is implemented in width end as the steel plate of raw material；Using c-type
After stamping machine carries out the bending of width end of steel plate, using U-shaped and O-shaped stamping machine so that the width side of steel plate
Steel plate is shaped to the molding procedure of drum to end mode opposite each other；Constrain the steel plate of drum, incite somebody to action
The width end of opposed steel plate abuts each other and the tack welding operation of tack welding；By submerged arc welding method to steel plate
The interior outside of docking section implements the formal welding sequence of seam weld；And by using pipe expander from the inner side of steel pipe carry out expander from
And by the expansion process that steel pipe forming is the roundness, straightness and outside dimension that specify, the pipe expander is joined in circumferencial direction
Multiple expanding dies of the outer peripheral face being equipped with circular arc cross-sections.
Additionally, in the manufacture method of the welded still pipes such as pipe for oil well use, line-pipes, as so that the width side of steel plate
Steel plate is shaped to the molding procedure of drum to end mode opposite each other, be not using U-shaped and O-shaped stamping machine reality
The method for applying forming U shaped articles and O forming, is also frequently used following press-bending method：Which is with drift to parallel joining certain interval is separated
The steel plate loaded on the 2 linear punch dies that puts is depressed.In the case of press-bending method is adopted, with enforcement forming U shaped articles, O
The situation of shaping is compared, and the number of times of punching press increases, but can be completed with less depressing force.Therefore, press-bending method is particularly suited for system
Make the situation of the steel pipe of thick material, high-strength material.
For pipe for oil well use, the UOE steel pipe of line-pipes, in laying place by using circumference soldering by UOE steel pipe
Pipe end is engaged with each other, and thus comes using UOE steel pipe.Therefore, when the roundness of UOE steel pipe is low, cannot be by UOE during circumference soldering
The pipe end of steel pipe is abutted each other and is engaged.And, when the roundness of UOE steel pipe is low, contour UOE steel pipe is layed in deep-sea
When under pressure ring border, steel pipe easily deforms because of pressure.For such background, it is proposed that improve UOE steel pipe in expansion process
Roundness technology (with reference to patent document 1 to 4).
Citation
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2010-167440 publication
Patent document 2：Japanese Unexamined Patent Publication 03-094936 publication
Patent document 3：Japanese Unexamined Patent Application 59-183943 publication
Patent document 4：Japanese Unexamined Patent Application 61-147930 publication
Content of the invention
Invent problem to be solved
In order to improve the roundness of UOE steel pipe, it is desirable to which the radius of curvature R 1 of the outer peripheral face of expanding die is with respect to UOE steel pipe
The ratio (below, being denoted as expander R ratio) of the radius of target R0 of inner surface is close to 1.0.However, expander R ratio is closer to 1.0, then expander
Mould is bigger with respect to the contact of the inner surface of UOE steel pipe, and therefore expanding die can crack damage (crack damage).
Therefore, in conventional expansion process, expander R ratio is limited to 0.9 or so, it is difficult to improve the roundness of UOE steel pipe further.Go out
In such background, expecting that offer is a kind of will not make expanding die crack the skill that damage can just manufacture the high steel pipe of roundness
Art.
The present invention be in view of above-mentioned problem and make, it is intended that provide one kind crack will not expanding die
Damage the manufacture method that can just manufacture the high steel pipe of roundness.
Means for solving the problems
The manufacture method of the manufacture method steel pipe of the steel pipe of the present invention, including following operation：
Molding procedure, is drum using buckling mode by steel plate forming, and the buckling mode is that have using top ends
There is the drift of the outer peripheral face of circular arc cross-sections, to make steel plate to be depressed in the way of the width end of steel plate is opposite each other；
Welding sequence, the width end of steel plate is welded with abutting each other；
Expansion process, carry out expander using pipe expander from the inner side of steel pipe, and the pipe expander is configured with tool in circumferencial direction
There are multiple expanding dies of the outer peripheral face of circular arc cross-sections,
The radius of curvature of the outer peripheral face of expanding die is expander R ratio with respect to the ratio of the radius of target of the inner surface of the steel pipe
And the radius of curvature of the outer peripheral face in punch tip portion is that drift R ratio is both less than with respect to the ratio of the radius of target of the inner surface of steel pipe
1, expander R when drift R than meeting following mathematical expression (1),
【Mathematical expression 1】
Expander R is than >=0.3 × drift R ratio+1.18 (1).
The manufacture method of the steel pipe of the present invention, in such scheme, the expander R ratio is in 0.94 less than 1.0
In the range of.
Invention effect
According to the manufacture method of the steel pipe of the present invention, expanding die will not be made to crack damage, and just to manufacture roundness high
Steel pipe.
Description of the drawings
Fig. 1 is the molding procedure of the buckling mode in the manufacture method of the steel pipe for being denoted as one embodiment of the present invention
Flow process concept map.
Fig. 2 is the structure of the pipe expander used in the manufacture method of the steel pipe for being denoted as one embodiment of the present invention
Schematic diagram.
Fig. 3 is the schematic diagram in the section for representing steel pipe.
Fig. 4 be represent that it is 0.903 to make expander R ratio, by after the steel pipe expander after the molding procedure of buckling mode is molded
The external diameter of steel pipe and the figure of internal diameter.
Fig. 5 be represent that it is 0.986 to make expander R ratio, by after the steel pipe expander after the molding procedure of buckling mode is molded
The external diameter of steel pipe and the figure of internal diameter.
Fig. 6 is the figure for representing the expander R when relation of the roundness of drift R ratio and steel pipe.
Fig. 7 is the figure for representing the expander R when relation of the roundness of drift R ratio and steel pipe.
Specific embodiment
As a result the present inventor has found through further investigation, (below, is denoted as in the punch forming for replacing U-shaped, O-shaped
UO technique) and in the case of adopting the molding procedure of buckling mode (being also denoted as press bend mode), steel pipe after seam weld
Shape ratio has carried out excellent during UO technique.Therefore, even if obtaining increasing expander R ratio, expanding die compared with when carrying out UO technique
Also will not crackle damage this opinion.It is thought that for following mechanism.In the molding procedure of buckling mode, will be used as original
The plate width of the steel plate of material carries out punch forming with being divided into multiple positions, therefore for week when being shaped to tube shape
To, though have on the whole tiny concavo-convex, not deformed portion also will not longer ground continuous.On the other hand, in UO technique, U-shaped and O
The shaping of type is carried out once respectively, therefore according to the difference of punching press condition, sometimes unchanged in the circumference when tube shape is shaped to
Shape portion head ground is continuous.If there is not deformed portion in circumference, the expanding die applying for pressing the not deformed portion in expander is very big
Load, therefore easy Crack Damage.Outer peripheral face and the steel pipe internal-surface of expanding die are made with larger area in expander
Contact, i.e. expander R are close to 1 than larger, then the phenomenon is more notable.However, in the steel pipe being molded with buckling mode, in the circumferential not
Variant part will not longer ground continuous, it is taken as that with UO technique when compared with, even if expander R can also make expanding die than becoming big
Implement expander operation with cracking damage.An enforcement hereinafter, with reference to the accompanying drawings of the present invention expected based on above-mentioned opinion
The manufacture method of the steel pipe of mode.
(molding procedure of buckling mode)
First, with reference to Fig. 1, illustrate as the buckling mode in the manufacture method of the steel pipe of one embodiment of the present invention
The flow process of molding procedure.Fig. 1 is the buckling mode in the manufacture method of the steel pipe for being denoted as one embodiment of the present invention
The concept map of the flow process of molding procedure.Arrow in Fig. 1 represents steel plate S, the action of drift 2.
As shown in figure 1, when steel plate S being shaped to drum by buckling mode, separating, certain interval ground is parallel
The exterior side of the upper supporting steel plate S of 2 linear punch die 1a, 1b of configuration, while depressed and between punch die 1a, 1b with drift 2
The position of the inner surface side of the corresponding steel plate S in gap, from the width both ends of steel plate S towards width central part heavy
Multiple above-mentioned pressure action.Thereby, it is possible to steel plate S is shaped to drum.
(structure of pipe expander)
Then, with reference to Fig. 2,3, the expander used in the manufacture method as the steel pipe of one embodiment of the present invention is described
The structure of machine.Fig. 2 is the structure of the pipe expander used in the manufacture method of the steel pipe for being denoted as one embodiment of the present invention
Schematic diagram.Fig. 3 is the schematic diagram in the section for representing steel pipe.But, in the present invention, the structure of pipe expander used is not limited to figure
1st, the structure shown in 2.
As shown in Fig. 2 the pipe expander 11 used in manufacture method as the steel pipe of one embodiment of the present invention possesses：
The semi-girder (boom) 12 of the shaft-like that top is inserted from one end of steel pipe P；And the top located at semi-girder 12, to axle right angle orientation
The expander head 14 of expander is carried out when expanding to steel pipe P.Expander head 14 includes tapered outer circumferential surfaces 15 and expanding die 16.
Tapered outer circumferential surfaces 15 are located at the top of semi-girder 12, from the lateral base end side undergauge in the top of semi-girder 12.Expanding die 16 is wrapped
Include with 15 sliding contact of tapered outer circumferential surfaces, from the tapered inner circumferential surface 16a of the lateral base end side undergauge in the top of semi-girder 12；And with steel pipe
The relative mould outer peripheral face 16b of the inner peripheral surface of P.As shown in figure 3, the arranged circumferentially multiple expanding dies 16 along tapered outer circumferential surfaces 15.
When using the pipe expander 11 with this spline structure expander to be carried out to steel pipe P, start, so that expanding die 16 is opened with expander
Beginning position alignment, makes semi-girder 12 retreat from expander starting position.Thus, make to slide with tapered outer circumferential surfaces 15 by wedging action and connect
The each several part of tactile expanding die 16 is conjugated to radiation direction, and steel pipe P is by expander.Then, the concavo-convex change of the cross sectional shape of steel pipe P
Little, the cross sectional shape of steel pipe P becomes close to positive round shape.
Then, make semi-girder 12 that expander starting position is proceeded to, return to expanding die 16 by relieving mechanism (not shown)
The inner side of axle vertical direction, then makes semi-girder 12 be advanced further amount corresponding with the pitch (axial length) of expanding die 16.So
Afterwards, expanding die 16 and new expander position alignment is made, repeats above-mentioned action.Thereby, it is possible to the length range pair in steel pipe P
Steel pipe P carries out the expander of the amount of the pitch of each expander expanding die 16.
(embodiment)
Fig. 4, Fig. 5 are to represent that it is 0.903 and 0.986 to make expander R ratio respectively, will be molded by the molding procedure of buckling mode
The external diameter (solid line) of the steel pipe after steel pipe P expander afterwards and the figure of internal diameter (dotted line).It should be noted that Fig. 4,5 with same
Multiplying power by the radius at each point of steel pipe P with respect to radius mean value deviation enlarged representation.
As shown in Figure 4,5, in the steel pipe P that the molding procedure by buckling mode is molded, by by expander R ratio from
0.903 become greater to 0.986, and external diameter is diminished with the difference of internal diameter, and roundness improves.Even if additionally, it is not true to increase expander R ratio yet
Recognize the Crack Damage of expanding die.
Fig. 6, Fig. 7 are the figures for representing the expander R when relation of the roundness of drift R ratio and steel pipe.Drift R ratio refers to drift
The ratio of the radius of target R0 of inner surface of radius of curvature R P1 of the outer peripheral face of top ends with respect to steel pipe P.As shown in fig. 6, expanding
Pipe R when drift R than, when being both less than 1 and expander R when drift R is than meeting mathematical expression (1) shown below, confirming
The high steel pipe P of roundness is arrived.It should be noted that the straight line L1 in Fig. 6 is by relational expression：Expander R ratio=- 0.3 × drift
The straight line that R represents than+1.18.Additionally, as shown in fig. 7, can make the scope of expanding die R ratio further for more than 0.94 and
In the range of 1.
【Mathematical expression 1】
Expander R is than >=0.3 × drift R ratio+1.18 (1)
By above, passing through the molding procedure of buckling mode to steel pipe forming, and with expander R when drift R
Than be respectively less than 1 and expander R when drift R ratio meet the mode of above-mentioned mathematical expression (1) and carry out molding procedure and the expansion of buckling mode
Plumber's sequence, thus confirming does not make expanding die crack the roundness that damage can just improve steel pipe.
More than, the embodiment to applying the invention completed by the present inventor is illustrated, but not by being based on
Present embodiment constitutes the record of a part of disclosure of the present invention and accompanying drawing to limit the present invention.That is, art technology
Other embodiment, embodiment and application technology that personnel etc. are made based on present embodiment etc. are both contained in the model of the present invention
Enclose.
Industrial applicability
Damage, in accordance with the invention it is possible to manufacture and crack expanding die, the steel pipe that can just improve the roundness of steel pipe.
The explanation of reference
1a, 1b punch die
2 drifts
11 pipe expanders
12 semi-girders
14 expander heads
15 tapered outer circumferential surfaces
16 expanding dies
16a tapered inner circumferential surface
16b mould outer peripheral face
P steel pipe
S steel plate
Claims (2)
1. a kind of manufacture method of steel pipe, including following operation：
Forming process, is drum using buckling mode by steel formability, and the buckling mode is that have circle using top ends
The drift of the outer peripheral face in arcuation section, to make to depress steel plate in the way of the width end of steel plate is opposite each other；
Welding sequence, the width end of steel plate is welded with abutting each other；
Expansion process, carry out expander using pipe expander from the inner side of steel pipe, and the pipe expander is configured with circle in circumferencial direction
Multiple expanding dies of the outer peripheral face in arcuation section,
The radius of curvature of the outer peripheral face of expanding die is that expander R is when rushed with respect to the ratio of the radius of target of the inner surface of the steel pipe
The radius of curvature of the outer peripheral face of crown end is drift R ratio both less than 1 with respect to the ratio of the radius of target of the inner surface of steel pipe, expands
Pipe R when drift R than meeting following mathematical expression (1),
Expander R is than >=0.3 × drift R ratio+1.18 (1).
2. the manufacture method of steel pipe according to claim 1, it is characterised in that
The expander R ratio is also in 0.94 less than in the range of 1.0.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2013/064525 WO2014188599A1 (en) | 2013-05-24 | 2013-05-24 | Method for producing steel pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105246613A CN105246613A (en) | 2016-01-13 |
| CN105246613B true CN105246613B (en) | 2017-03-08 |
Family
ID=51409473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380076836.3A Active CN105246613B (en) | 2013-05-24 | 2013-05-24 | The manufacture method of steel pipe |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3006133B1 (en) |
| JP (1) | JP5541432B1 (en) |
| CN (1) | CN105246613B (en) |
| RU (1) | RU2617465C1 (en) |
| WO (1) | WO2014188599A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105499324A (en) * | 2016-01-13 | 2016-04-20 | 中石化石油工程技术服务有限公司 | Steel tube opening roundness restoring device and using method thereof |
| RU2769596C1 (en) * | 2018-09-14 | 2022-04-04 | ДжФЕ СТИЛ КОРПОРЕЙШН | Method of making steel pipe and matrix |
| WO2022009575A1 (en) | 2020-07-10 | 2022-01-13 | Ｊｆｅスチール株式会社 | Steel pipe roundness prediction model generation method, steel pipe roundness prediction method, steel pipe roundness control method, steel pipe manufacturing method, and steel pipe roundness prediction device |
| WO2022009576A1 (en) | 2020-07-10 | 2022-01-13 | Ｊｆｅスチール株式会社 | Steel pipe roundness prediction method, steel pipe roundness control method, steel pipe production method, method for generating steel pipe roundness prediction model, and steel pipe roundness prediction device |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59183943A (en) * | 1983-04-01 | 1984-10-19 | Sumitomo Metal Ind Ltd | Mechanically expanding method of steel pipe |
| JPS59209425A (en) * | 1983-05-12 | 1984-11-28 | Nippon Kokan Kk <Nkk> | U press tool for uoe steel tube manufacturing process |
| JPS61147930A (en) | 1984-12-19 | 1986-07-05 | Sumitomo Metal Ind Ltd | Forming and expanding method of steel pipe |
| DE3632952A1 (en) * | 1986-09-27 | 1988-04-07 | Hoesch Ag | METHOD AND DEVICE FOR THE CONTINUOUS PRODUCTION OF TUBULAR BODIES BY LASER LENGTH SEAL WELDING |
| US4753101A (en) * | 1986-12-08 | 1988-06-28 | Shultz William E | Apparatus and method for expanding and shaping tubular conduits |
| JPH0394936A (en) | 1989-09-06 | 1991-04-19 | Nkk Corp | Method for expanding uoe steel pipe |
| JP2001113316A (en) * | 1999-10-15 | 2001-04-24 | Kawasaki Steel Corp | Method and device for press forming tube |
| DE10232098B4 (en) * | 2002-07-15 | 2004-05-06 | Sms Meer Gmbh | Device for producing pipes from sheet metal |
| JP4410787B2 (en) * | 2006-11-09 | 2010-02-03 | 新日本製鐵株式会社 | Manufacturing method of high strength welded steel pipe |
| RU2371265C2 (en) * | 2007-12-06 | 2009-10-27 | Открытое акционерное общество "Синарский трубный завод" (ОАО "СинТЗ") | Method for production of steel pipes from low-alloyed hardly deformed and carbon grades of steel |
| WO2009157570A1 (en) * | 2008-06-23 | 2009-12-30 | Ｊｆｅスチール株式会社 | Method for manufacturing laser-welded steel pipe |
| JP5262746B2 (en) | 2009-01-22 | 2013-08-14 | 新日鐵住金株式会社 | Pipe end shape correction method for UOE metal pipe |
| CN101972915B (en) * | 2010-08-04 | 2012-08-29 | 南京宝色股份公司 | Method for preparing corrosion-resistant non-ferrous metal pipeline |
| JP5614324B2 (en) * | 2011-02-21 | 2014-10-29 | Ｊｆｅスチール株式会社 | Steel pipe manufacturing method |
-
2013
- 2013-05-24 RU RU2015155583A patent/RU2617465C1/en active
- 2013-05-24 CN CN201380076836.3A patent/CN105246613B/en active Active
- 2013-05-24 JP JP2014504870A patent/JP5541432B1/en active Active
- 2013-05-24 EP EP13885377.5A patent/EP3006133B1/en active Active
- 2013-05-24 WO PCT/JP2013/064525 patent/WO2014188599A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| JP5541432B1 (en) | 2014-07-09 |
| JPWO2014188599A1 (en) | 2017-02-23 |
| EP3006133A1 (en) | 2016-04-13 |
| EP3006133B1 (en) | 2017-08-16 |
| CN105246613A (en) | 2016-01-13 |
| WO2014188599A1 (en) | 2014-11-27 |
| RU2617465C1 (en) | 2017-04-25 |
| EP3006133A4 (en) | 2016-06-29 |
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