WO2008099943A1 - 電縫鋼管の製造方法およびその製造装置 - Google Patents
電縫鋼管の製造方法およびその製造装置 Download PDFInfo
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- WO2008099943A1 WO2008099943A1 PCT/JP2008/052592 JP2008052592W WO2008099943A1 WO 2008099943 A1 WO2008099943 A1 WO 2008099943A1 JP 2008052592 W JP2008052592 W JP 2008052592W WO 2008099943 A1 WO2008099943 A1 WO 2008099943A1
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- WIPO (PCT)
- Prior art keywords
- welding
- welding power
- erw
- groove
- groove shape
- Prior art date
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/25—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. one or more lines, moiré fringes on the object
-
- 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
-
- 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
- B21C37/0826—Preparing the edges of the metal sheet with the aim of having some effect on the weld
-
- 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
- B21C37/083—Supply, or operations combined with supply, of strip material
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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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/08—Seam welding not restricted to one of the preceding subgroups
- B23K11/087—Seam welding not restricted to one of the preceding subgroups for rectilinear seams
- B23K11/0873—Seam welding not restricted to one of the preceding subgroups for rectilinear seams of the longitudinal seam of tubes
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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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/24—Electric supply or control circuits therefor
- B23K11/25—Monitoring devices
- B23K11/252—Monitoring devices using digital means
-
- 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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/34—Preliminary treatment
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
Definitions
- the present invention relates to a method for manufacturing an electric resistance welded steel pipe used as a line pipe for transportation of oil or natural gas, and a manufacturing apparatus therefor.
- ERW steel pipes have been used as line pipes, but there is a problem with the quality of ERW seam parts (ERW welds) to meet these cryogenic toughness requirements. There is no track record. This is because minute oxides generated during ERW welding (electrical resistance welding) remain in the seam (welded zone) even after welding is complete, and this is the cause of the decrease in absorbed energy in the Charpy test at cryogenic temperatures. This is because the required toughness value cannot be obtained stably.
- shield welding which covers the welding device and the periphery of the welding device, is shielded from the atmosphere and replaced with an inert gas, is mainly a small-diameter tube with an outer diameter of ⁇ 165 mm or less.
- the welding equipment must be increased in size and the shield area must be increased in size. Because it becomes difficult to do so, there are few places where shield welding is put into practical use in mills that produce medium or large diameter pipes with outer diameters exceeding ⁇ 1 65 mm.
- the present applicant obtains an electric resistance welded steel pipe having excellent toughness even at extremely low temperatures without using shield welding in JP 2007-160383 A (the filing date after the priority date of the present application).
- an ERW steel pipe is obtained by continuously rolling a steel strip cut to a predetermined width using a roll forming device to form a substantially tubular open pipe and welding both edges of the open pipe by ERW welding.
- Manufactured Specifically, a high-frequency current is applied to each edge of the open tube, both edges are heated and melted by Joule heat generated thereby, and then both edges are butted and pressed.
- the shape of the edge of the open tube is a simple rectangle, as shown in the cross-sectional shape of Fig. 8A. Since current is concentrated and the current density is low at the center of the plate thickness, this non-uniform current density in the plate thickness direction results in a non-uniform temperature distribution, which in turn leads to oxide discharge due to the low temperature at the center of the plate thickness. It was an essential cause of failure. Therefore, in Japanese Patent Application Laid-Open No. 2007-160383, as shown in the cross-sectional shape in FIG. 8B, a predetermined taper shape (groove shape) is formed on the outer surface and the inner surface of the edge of the open pipe. Therefore, we will eliminate the current density non-uniformity in the plate thickness direction described above, and efficiently discharge oxide from the weld to obtain an ERW steel pipe with high toughness even at extremely low temperatures. It is said.
- the groove shape applied to the edge may not be the specified shape due to dimensional variations such as camber (bending) of the steel strip that is the base metal and variations in strength.
- the temperature distribution of the welded portion may fluctuate, and it may not be possible to stably manufacture an ERW steel pipe having the desired toughness.
- the present invention has been made in view of the circumstances as described above, and can stably produce an ERW steel pipe having a desired weld toughness even if there is a dimensional variation or the like in a steel strip as a base material.
- the purpose is to provide an ERW steel pipe manufacturing method with good weld toughness Disclosure of the Invention
- the present invention has the following features.
- the relationship between the toughness and the welding power for the groove height of the groove shape was obtained in advance, and the groove height and the desired toughness were obtained from the relationship between the toughness and the welding power. Then, during manufacture of the ERW pipe, the groove height of the given groove shape is measured, and the measured groove height and the groove height are measured. And a welding power at which a desired toughness can be obtained, a welding power at which a desired toughness is obtained with respect to the measured groove height is obtained, and a welding for an electric-welding welding is performed based on the obtained welding power.
- the method of applying the groove shape to the edge of the open pipe in advance is either an application method using an edge cutting device, an application method using a roll forming device, or an application method using a hole-type roll.
- the groove shape measuring means includes a laser slit light irradiation device that irradiates laser slit light on the edge of the open tube, and an image that captures the edge of the open tube irradiated by the laser slit light irradiation device.
- the welding power adjusting means includes the groove height measured by the groove shape measuring means and a relationship between the groove height and the welding power that is obtained in advance to obtain a desired toughness. [5], characterized in that a welding power at which a desired toughness can be obtained with respect to the groove height obtained is obtained, and the welding power for electric resistance welding is adjusted based on the obtained welding power. Or ERW steel pipe manufacturing facility as described in [6].
- the relationship between the toughness and the welding power for the groove height of the groove shape is obtained in advance, and the groove height and the desired toughness can be obtained from the relationship between the toughness and the welding power.
- the relationship between the welding power and the amount of oxide as well as the relationship between the welding power and the amount of oxide.
- From the relationship between the welding power and the amount of oxide obtain the relationship between the oxide and the correction factor for the welding power.
- the groove height of the given groove shape is measured before performing the ERW welding, and the measured groove height and the groove height and the desired toughness are determined.
- a welding power for obtaining a desired toughness with respect to the measured groove height is obtained, and electric sewing is performed based on the obtained welding power.
- the welding power was adjusted, and the amount of oxide in the weld was measured after ERW welding, and the measured amount of oxide and the relationship between the amount of oxide and the correction coefficient of welding power were measured.
- the method for pre-grooving the edge of the open pipe is the method of applying with an edge cutting device, the method of applying with a roll forming device, or using a hole-type roll.
- FIG. 1A and 1B are diagrams showing an embodiment of the present invention.
- FIG. 2A is a top view of a partial detail view of one embodiment of the present invention.
- FIG. 3 is a diagram for explaining the creation of a welding power optimization curve in one embodiment of the present invention.
- FIG. 4 is a diagram showing an example of a welding power optimization curve in one embodiment of the present invention.
- FIG. 5 is a view for explaining correction of welding power in one embodiment of the present invention.
- FIG. 6 is a diagram for explaining the calculation of the correction coefficient of the welding power in one embodiment of the present invention.
- FIG. 7 is a diagram showing an example of a correction coefficient for welding power in one embodiment of the present invention.
- FIG. 8A is a diagram showing a case where the edge of the open tube has a rectangular shape
- FIG. 8B is a diagram showing a case of a groove shape.
- FIG. 1A shows a production line for an ERW steel pipe according to an embodiment of the present invention. Similar to a normal ERW steel pipe production line, the edge of a coil (steel strip) 1 cut to a predetermined width is cut with an edge cutting device 2 and then continuously roll-formed with a roll forming device 3. A pipe-shaped open pipe 4 'is formed, and both edges 4a, 4b of the open pipe 4 are electro-welded, that is, a welding power generator ( A high-frequency current is applied by a welding machine 6, and both edges 4 a and 4 b are heated by Joule heat generated thereby. “Melting and then both edges 4 a and 4 by squeeze rolls” (not shown) ERW steel pipe 7 is manufactured by matching b and pressing. In addition, a bead cutting byte (not shown) that cuts a bead formed by ERW welding at a position close to the downstream side of the ERW welding device (welding power generator 6 and squeeze roll) is provided. It is provided.
- the steel strip 1 is used by using an edge cutting device 2, a roll forming device 3, or a hole-type roll (not shown) for appropriately processing both edges 4a, 4b.
- an edge cutting device 2 a roll forming device 3 or a hole-type roll (not shown) for appropriately processing both edges 4a, 4b.
- a groove shape tapeered shape as shown in Fig. 8B is applied to the edges 4a and 4b of the open tube 4.
- the edge 4a and 4b are continuously photographed by the edge shape monitor (high-precision monitor camera) 1 1 immediately before the ERW welding is performed, and the photographed images are connected to the welding machine 6 to the arithmetic processing unit 1 4
- image processing and subtle changes in the groove shape are measured, and the optimum welding power is calculated based on the measurement results (dimension data).
- the welding power from the welding power generator 6 Adjust I have to so that.
- FIG. 1B shows an ERW copper pipe production line according to another embodiment of the present invention.
- the welded part (the welded part corresponding to the location where the groove shape was measured) is inspected by the ultrasonic flaw detector 15 after ERW welding, and the inspection data is processed. Measure the oxide distribution of the welds by inputting them into the equipment 14 in real time and processing them. The measurement results of the groove shape (dimension data) and the measurement results of the oxide distribution (oxide amount) To find the optimum welding power based on The welding power from the welding power generator 6 is adjusted.
- FIGS. 2A and 2B are detailed explanatory diagrams of groove shape measurement using the edge shape monitor 11 described above. 2A is a top view, and FIG. 2B is an AA arrow view (transverse sectional view) of FIG. 2A.
- the edge shape monitor 1 1 is a combination of a laser slit light irradiation device 1 2 and an image measurement camera 1 3 (light cutting device).
- one edge of the open tube 4 4 a Laser slit light irradiating device that irradiates laser slit light at a predetermined irradiation angle 0 from the oblique direction 1 2 a and an image measurement camera that captures the edge 4 a irradiated with the laser slit light 1 3 a Laser slit light irradiation device 1 2 b that irradiates laser slit light on the other edge 4 b of the open tube 4 from a slanting direction at a predetermined irradiation angle ⁇ , and the laser one slit light. It consists of an image measurement camera 1 3 b that captures the edge 4 b.
- the laser slit light irradiation device 1 2 a, 1 2 b from the laser slit light edge 4 a, 4 b was photographed with image measurement cameras 1 3 a, 1 3 b
- the captured image is subjected to image processing by the arithmetic processing unit 14 to measure the groove shapes 5 a and 5 b.
- the four groove heights h shown in Fig. 2B are measured.
- the amount of oxide after ERW welding is measured using an ultrasonic flaw detector 15 at the location where the groove shape is measured as described above. I have to.
- Fig. 3 shows the welding power (with groove height h as a parameter) when an ERW steel pipe is manufactured with groove shapes 5a and 5b on both edges 4a and 4b of open pipe 4.
- Figure 3 shows an example of the relationship between the weld seam toughness (Charbi test transition temperature) and the unit of kW / (ec'mm 2 ) converted to per unit time and unit area. Is shown.
- the toughness of the weld seam is expressed by the Charpy test transition temperature (hereinafter simply referred to as the transition temperature)
- the coil thickness t is 12.7 mm
- the groove height h is 2 mm, 3 mm, 4 mm.
- Fig. 3 qualitatively shows the relationship between welding power and toughness, and welding power values are omitted.
- the transition temperature is greatly reduced and the toughness is greatly improved when the groove shape is applied, compared to the case where the groove shape is not applied.
- the effect of giving is appearing.
- the welding power at which the transition temperature is the lowest when the groove height is the same (open dots in Fig. 3) varies with the groove height.
- the welding power at which the transition temperature is the lowest when the groove height varies with the groove height.
- the toughness (transition temperature) will vary greatly.
- the toughness is adjusted by adjusting the welding power W to the optimum welding power at the groove height h in response to the change in the groove height h.
- the variation is minimized.
- the horizontal axis represents the optimum welding power W (in Fig. 4, the unit is converted into per unit time and unit area, and the unit is kW / (sec 'mm 2 )).
- the curve obtained by plotting the groove height h This is a welding power optimization curve (welding power correction curve) corresponding to the change in the welding power.
- the optimum welding power for the groove height h is obtained from this welding power optimization curve, and the welding power W is set to the optimum welding power.
- the welding power W is set to the optimum welding power at the initial target groove height hm (for example, 3 mm) (that is, the groove height of 3 mm is used as the starting point in Fig. 4). ) According to the amount of deviation of the groove height, the welding power W may be corrected by the optimum amount of fluctuation of the welding power.
- the welding power optimization curve (welding power correction curve) in Fig. 4 is created in advance before starting the manufacture (operation) of the ERW steel pipe, and when manufacturing the same type of ERW steel pipe, The same welding power optimization curve (welding power correction curve) is used.
- the same welding power optimization curve (welding power correction curve) is used.
- fine oxides may remain in the weld due to fluctuations in operating conditions and the like, leading to a decrease in brittleness.
- the amount of oxide in the weld after ERW welding is measured, and the measurement result is sent via the arithmetic processing unit 14. Therefore, it was decided to feed back the welding power generator 6 and adjust the welding power to stably reduce the amount of oxide in the weld. At this time, usually, when the amount of oxide is large, the welding power is increased to promote the floating removal of the oxide.
- Known means can be used to measure the amount of oxide in the weld (particularly the amount of micro-oxide (a few hundred ⁇ m or less) that affects the toughness of the weld).
- measurement is performed by an ultrasonic flaw detection method using an array-type probe disclosed in Japanese Patent Application Laid-Open No. 2007-163470 (application S after the priority date of the present application) or another method disclosed in the same document. Is possible.
- the feedback method when using the ultrasonic flaw detection method using an array type probe is shown below.
- Figure 5 shows an example of the relationship between the measured value (average echo height (%)) of the ultrasonic flaw detector 15 and the absorbed energy. There is a correlation between the measured value (average echo height (%)) and the amount of fine oxides. In this example, if the average echo height is 0 to 20%, the amount of oxide in the weld is small and sufficient toughness is obtained.
- the average echo height ( oxide amount) of the welded part after welding by electric resistance welding under various conditions (material shape, material, pipe making speed, etc.) and welding Fig. 6 shows the relationship between power (unit: kW / (sec'mm 2 )) in advance. Fig. 6 qualitatively shows the relationship between the average echo height and welding power, and the welding power value is omitted. 'Next, as shown in Fig. 5, for example, if high toughness can be secured if the average echo height is about 20% or less, the reference value for average echo height is set to 20%. Based on this, the welding power correction factor when the average echo height is x% is obtained using the following equation.
- Figure 7 shows the relationship between the average echo height obtained as described above and the correction coefficient.
- the welding power correction factor shown in Fig. 7 is created in advance before the start (operation) of the ERW pipe, and the same correction factor is used when manufacturing the same type of ERW pipe. .
- the correction factor is 1.05 from Fig. 7, so the set welding power is 1. 0 Welding power multiplied by 5 is controlled.
- the measured average echo height is 0 ⁇ If it is 20%, the welding conditions do not need to be changed (correction factor is 1).
- the measurement of the amount of oxide by the ultrasonic flaw detector 15 is preferably performed immediately after ERW welding. Specifically, it is preferable to arrange the ultrasonic flaw detector 15 immediately after the bead cutting byte. This is because the ffl degree falls as the information to be fed back because the longer it is, the farther it is from the ERW welding machine.
- the above control method is an example, and it goes without saying that other means such as tuning the welding power may be adopted so that the average echo height falls within the range of 0 to 20%.
- the feed power control based on the measurement result of the groove height h and the feedback control based on the measurement result of the oxide amount (average echo height) can be combined to optimize the welding power.
- the thickness direction during ERW welding is provided.
- the current density that is, the temperature distribution, is made uniform to reduce the fine oxide in the seam after ERW welding, and good cryogenic toughness can be obtained.
- the groove shapes 5 a and 5 b may be given by the edge cutting device 2 or by the roll forming device 3 (for example, by a fin pass roll). Alternatively, it may be applied using a perforated roll (not shown), but it is preferable to provide the groove shapes 5a and 5b as close to the welding machine 6 as possible because the dimensional accuracy is improved. .
- the measurement of the groove shapes 5 a and 5 b may be performed only on the groove height on one surface side (for example, the outer surface side) of the open pipe 4.
- the vertical axis in Fig. 4 is organized by (measured groove height t of any one of the grooves).
- the groove shapes 5a and 5b are measured by photographing the edges 4a and 4b of the open tube 4 with the image measurement camera 13 without using the laser slit light irradiation device 12. It is also possible to calculate the groove height h based on the shading.
- a groove shape may be provided on either the outer surface side or the inner surface side of the open tube 4.
- the welding power optimization curve (welding power correction curve) shown as an example in FIG. 4 may be held as an empirical formula in the arithmetic processing unit 14, and the groove height or groove height It is also possible to maintain a database with parameters such as the ratio to the thickness of the steel and welding power, and apply the measured groove height to this empirical formula to calculate the welding power or measure the groove height.
- the welding power may be calculated by referring to the database (interpolating the database value if necessary). This is shown in Figure 7 as an example The same applies to the correction factor (correction factor curve) due to oxide (average echo height).
- the welding power optimization curve (welding power correction curve) in FIG. 4 is created from the welding power having the lowest transition temperature from FIG. 3, but the present invention is not limited to this.
- a welding power optimization curve may be created from the range of welding power corresponding to the transition temperature at which desired toughness (for example, specifications required for ERW steel pipes) can be obtained.
- the welding power optimization curve (welding power correction curve) is band-shaped, and the welding power is adjusted within this band-shaped range.
- the correction coefficient (correction coefficient curve) for oxide average echo height
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Abstract
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Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/526,971 US9109884B2 (en) | 2007-02-13 | 2008-02-08 | Method and equipment for manufacturing electric resistance welded steel pipe |
ES08711419.5T ES2576581T3 (es) | 2007-02-13 | 2008-02-08 | Método de fabricación de una tubería de acero mediante soldadura por costura y su aparato de fabricación |
EP08711419.5A EP2123389B1 (en) | 2007-02-13 | 2008-02-08 | Seam-welded steel pipe manufacturing method and its manufacturing apparatus |
CN2008800049167A CN101610869B (zh) | 2007-02-13 | 2008-02-08 | 电阻焊钢管的制造方法及其制造装置 |
CA2677770A CA2677770C (en) | 2007-02-13 | 2008-02-08 | Method and equipment for manufacturing electric resistance welded steel pipe |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007-031714 | 2007-02-13 | ||
JP2007031714 | 2007-02-13 | ||
JP2007-046802 | 2007-02-27 | ||
JP2007046802 | 2007-02-27 |
Publications (1)
Publication Number | Publication Date |
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WO2008099943A1 true WO2008099943A1 (ja) | 2008-08-21 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2008/052592 WO2008099943A1 (ja) | 2007-02-13 | 2008-02-08 | 電縫鋼管の製造方法およびその製造装置 |
Country Status (5)
Country | Link |
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US (1) | US9109884B2 (ja) |
EP (1) | EP2123389B1 (ja) |
CA (1) | CA2677770C (ja) |
ES (1) | ES2576581T3 (ja) |
WO (1) | WO2008099943A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2010127352A2 (en) * | 2009-05-01 | 2010-11-04 | Hy-Ko Products | Key blank identification system with groove scanning |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5360543U (ja) * | 1976-10-22 | 1978-05-23 | ||
JPS61115685A (ja) * | 1984-11-12 | 1986-06-03 | Kawasaki Steel Corp | 電縫鋼管の製造方法 |
JPH04157074A (ja) * | 1990-10-16 | 1992-05-29 | Nippon Steel Corp | 電縫管の突き合わせ角度検出方法 |
JPH04178281A (ja) | 1990-11-08 | 1992-06-25 | Nkk Corp | 電縫管のガスシール溶接方法 |
JP2001170779A (ja) * | 1999-12-13 | 2001-06-26 | Kawasaki Steel Corp | 鋼管の製造方法 |
JP2007163470A (ja) | 2005-11-21 | 2007-06-28 | Jfe Steel Kk | 管体の超音波探傷装置および超音波探傷方法 |
JP2007160383A (ja) | 2005-12-16 | 2007-06-28 | Jfe Steel Kk | 溶接部特性の良好な電縫管の製造方法 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE735711C (de) * | 1939-04-12 | 1943-05-24 | Siemens Ag | Widerstandsschweissmaschine fuer Stumpfschweissung, insbesondere fuer die Herstellung von Rohren grosser Wandstaerke |
US3588426A (en) * | 1969-06-27 | 1971-06-28 | Amf Inc | Method and apparatus for hi-frequency welding edges advanced in parallel |
US3610876A (en) * | 1969-12-22 | 1971-10-05 | Gopal Krishna Bhat | Variable parameter tungsten-inert gas welding |
JPS5923047B2 (ja) | 1976-11-11 | 1984-05-30 | 松下電器産業株式会社 | 誘電体共振器 |
JPS57195587A (en) * | 1981-05-29 | 1982-12-01 | Nippon Steel Corp | Method and device for controlling automatic welding of high frequency electric resistance welded pipe |
US4517439A (en) * | 1984-05-07 | 1985-05-14 | Colley Bruce H | AC-DC welding power supply |
JPS61115686A (ja) | 1984-11-12 | 1986-06-03 | Kawasaki Steel Corp | 電縫鋼管の製造方法 |
US4649256A (en) * | 1985-01-10 | 1987-03-10 | Nippon Steel Corporation | High-frequency electric resistance welding method using irradiation with a laser beam |
JPS63104797A (ja) * | 1986-10-22 | 1988-05-10 | Nkk Corp | 溶接鋼管の製造方法 |
NO174242C (no) * | 1987-01-29 | 1994-04-06 | Norsk Hydro As | Anordning og fremgangsmåte for preparering av rörender og sammensveising av rör |
JPH04105709A (ja) | 1990-08-22 | 1992-04-07 | Kobe Steel Ltd | 電縫鋼管の製造方法 |
JP2630717B2 (ja) * | 1992-10-23 | 1997-07-16 | 新日本製鐵株式会社 | 自動開先検査装置 |
-
2008
- 2008-02-08 CA CA2677770A patent/CA2677770C/en active Active
- 2008-02-08 WO PCT/JP2008/052592 patent/WO2008099943A1/ja active Application Filing
- 2008-02-08 US US12/526,971 patent/US9109884B2/en active Active
- 2008-02-08 ES ES08711419.5T patent/ES2576581T3/es active Active
- 2008-02-08 EP EP08711419.5A patent/EP2123389B1/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5360543U (ja) * | 1976-10-22 | 1978-05-23 | ||
JPS61115685A (ja) * | 1984-11-12 | 1986-06-03 | Kawasaki Steel Corp | 電縫鋼管の製造方法 |
JPH04157074A (ja) * | 1990-10-16 | 1992-05-29 | Nippon Steel Corp | 電縫管の突き合わせ角度検出方法 |
JPH04178281A (ja) | 1990-11-08 | 1992-06-25 | Nkk Corp | 電縫管のガスシール溶接方法 |
JP2001170779A (ja) * | 1999-12-13 | 2001-06-26 | Kawasaki Steel Corp | 鋼管の製造方法 |
JP2007163470A (ja) | 2005-11-21 | 2007-06-28 | Jfe Steel Kk | 管体の超音波探傷装置および超音波探傷方法 |
JP2007160383A (ja) | 2005-12-16 | 2007-06-28 | Jfe Steel Kk | 溶接部特性の良好な電縫管の製造方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2123389A4 |
Also Published As
Publication number | Publication date |
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EP2123389A1 (en) | 2009-11-25 |
US9109884B2 (en) | 2015-08-18 |
EP2123389A4 (en) | 2015-04-08 |
CA2677770A1 (en) | 2008-08-21 |
US20100059484A1 (en) | 2010-03-11 |
EP2123389B1 (en) | 2016-04-13 |
CA2677770C (en) | 2015-04-07 |
ES2576581T3 (es) | 2016-07-08 |
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