WO2011118783A1 - Uoe鋼管の製造方法および製造装置 - Google Patents
Uoe鋼管の製造方法および製造装置 Download PDFInfo
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- WO2011118783A1 WO2011118783A1 PCT/JP2011/057389 JP2011057389W WO2011118783A1 WO 2011118783 A1 WO2011118783 A1 WO 2011118783A1 JP 2011057389 W JP2011057389 W JP 2011057389W WO 2011118783 A1 WO2011118783 A1 WO 2011118783A1
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- Prior art keywords
- groove
- press
- steel pipe
- shape
- manufacturing
- Prior art date
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Classifications
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- 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
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
- B23K26/28—Seam welding of curved planar seams
- B23K26/282—Seam welding of curved planar seams of tube sections
-
- 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
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
-
- 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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
- B23K31/027—Making tubes with soldering or 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
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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
- G01B11/245—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures using a plurality of fixed, simultaneously operating transducers
-
- 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
- G01B11/2518—Projection by scanning of the object
- G01B11/2522—Projection by scanning of the object the position of the object changing and being recorded
-
- 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
- B23K2101/10—Pipe-lines
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
Definitions
- the present invention relates to a UOE steel pipe manufacturing method and manufacturing apparatus. Specifically, for example, by accurately measuring the cross-sectional shape of the groove formed in the edge portion of the thick steel plate, which is a raw steel plate, before the C press is started, the manufacturing man-hours and the yield are reduced.
- the present invention relates to a method and an apparatus for manufacturing a UOE steel pipe while suppressing.
- a groove processing for welding is performed on the edge portion of a steel plate as a material using a cutting machine.
- a super hard tool is used for the edge of a thick plate (plate thickness 6 to 50 mm) corresponding to the outer diameter.
- a groove is formed by forming a groove for welding by cutting with a cutting machine called an edge planar.
- the steel plate that has been subjected to the groove processing is successively subjected to C press, U press and O press to form an open pipe having an O-shaped cross section. After that, the edge portions of the open pipe that have been grooved are brought into contact with each other and welded. After that, pipe expansion is performed to obtain a UOE steel pipe.
- Patent Document 1 Japanese Patent Laid-Open No. 2005-288471 discloses a method for manufacturing a UOE steel pipe. *
- the present invention is a method for manufacturing a UOE steel pipe in which a steel plate having a groove formed at an edge portion is subjected to a C press, a U press and an O press in order to form an open pipe, and the groove of the open pipe is abutted and welded. Measuring the shape of the groove of the steel plate before the C press is applied, and correcting the shape of the groove of the steel plate before the C press is started based on the measurement result. It is the manufacturing method of the UOE steel pipe characterized by determining the necessity of this.
- the present invention relates to a groove processing device for forming a groove in an edge portion of a steel plate, a conveying device for conveying the steel plate on which the groove is formed, a C press machine, U UOE steel pipe manufacturing apparatus comprising a press machine and an O press machine, and comprising: a steel pipe forming apparatus for forming the steel plate on which the groove is formed into an open pipe; and a welding apparatus for abutting and welding the groove of the open pipe
- a groove shape measuring device for measuring the shape of the groove of the steel plate before the C press by the C press machine is provided between the groove processing apparatus and the C press machine.
- the groove shape measuring device determines the necessity of correcting the groove shape of the steel sheet before the C press is started based on the measurement result of the groove shape.
- UOE steel pipe manufacturing equipment UOE steel pipe manufacturing equipment.
- the shape of the groove is measured by a light cutting method in which a linear laser beam spreading in the thickness direction of the steel plate is applied to the edge portion of the steel plate.
- the steel sheet is conveyed by a conveying roll between the formation of the groove and the C press machine to which the C press is performed, and the shape of the groove is It is desirable that measurement is performed in the vicinity of the transport roll and on the exit side in the transport direction of the steel sheet.
- the cross-sectional shape of a groove formed at an edge portion of a raw steel plate such as a thick plate can be accurately measured before the C press is started.
- a dedicated groove shape measuring device for measuring the shape, it is necessary to determine whether or not the shape of the groove formed on the edge of the steel sheet by a groove processing device such as an edge planer is appropriate. In this case, it is possible to promptly output to the operator the necessity of correcting the groove shape. For this reason, it becomes possible to manufacture a UOE steel pipe while preventing an increase in the number of man-hours and a decrease in yield due to the inappropriate shape of the groove.
- FIG. 1 is an explanatory diagram schematically showing an outline of an embodiment of the present invention.
- FIG. 2 is an explanatory view showing an example of the shape of the groove of the thick plate.
- FIG. 3 is an explanatory diagram showing a situation where the two-dimensional laser distance meter measures the shape of the groove of the thick plate.
- FIG. 4A is an explanatory view showing a case where the thick plate has a kamaboko shape
- FIG. 4B is an explanatory view showing a case where the tip of the thick plate has a warped shape.
- FIG. 5 is an explanatory diagram showing a positional relationship between the transport roll and the groove shape measuring device.
- FIG. 6 is a graph showing an example of the measurement result of the groove shape by the groove shape measuring apparatus.
- FIG. 7 is an explanatory view schematically showing a test procedure that verifies that the groove shape measuring apparatus can detect the presence or absence of foreign matter adhering to the groove.
- FIG. 8 is a graph showing the results of the test shown in FIG.
- FIG. 9 is a graph showing the results of the test shown in FIG.
- FIG. 10 is a graph showing the results of the test shown in FIG.
- FIG. 11 is a graph showing the results of the test shown in FIG.
- FIG. 1 is an explanatory diagram schematically showing the outline of the present embodiment.
- the manufacturing apparatus 1 includes a groove processing device 2, a conveying device 3, a steel pipe forming device 4, a welding device 5, and a groove shape measuring device 6.
- a groove processing device 2 As shown in FIG. 1, the manufacturing apparatus 1 according to this embodiment includes a groove processing device 2, a conveying device 3, a steel pipe forming device 4, a welding device 5, and a groove shape measuring device 6.
- these components will be sequentially described.
- the groove processing device 2 forms a groove in the edge portions 7a and 7b of a thick plate (steel plate having a thickness of about 6 to 50 mm) 7 which is a material of a large diameter UOE steel pipe 30 having an outer diameter of about 20 to 60 inches. It is a device for doing.
- the groove processing device 2 a well-known and conventional device may be used.
- an edge planar using an ultra-hard bit for cutting the edge portions 7 a and 7 b of the thick plate 7 is exemplified.
- groove processing device 2 Since the groove processing device 2 is well known to those skilled in the art, further description of the groove processing device 2 is omitted.
- the conveying apparatus 3 is an apparatus for conveying the thick plate 7 having the grooves 8a and 8b formed in the edge portions 7a and 7b to the steel pipe forming apparatus 4.
- the conveyance device 3 is configured by a large number of conveyance rolls 9 arranged in parallel in the conveyance direction.
- the thick plate 7 is conveyed by a number of conveying rolls 9 constituting the conveying device 3 between the formation of the grooves 8a and 8b and the C pressing machine 10 on which the C press is performed. Since the transport device 3 is well known to those skilled in the art, further description of the transport device 3 is omitted.
- the steel pipe forming apparatus 4 includes a C press machine 10, a U press machine 11, and an O press machine 12, and is an apparatus for forming the thick plate 7 formed with the grooves 8a and 8b into the open pipe 13.
- the welding device 5 is a device for abutting and welding the grooves 8a and 8b of the open pipe 13. Since the welding apparatus 5 is well known to those skilled in the art, further description regarding the welding apparatus 5 is omitted.
- the steel pipe 14 welded by the welding apparatus 5 is made into a UOE steel pipe 30 as a product by being subjected to pipe expansion processing by the pipe expansion processing apparatus 15.
- the groove shape measuring device 6 is disposed between the groove processing device 2 and the C press machine 10, and the shapes of the grooves 8 a and 8 b of the thick plate 7 before the C press by the C press machine 10 is performed. It is a device for measuring.
- the groove shape measuring device 6 determines the groove 8a, 8b of the thick plate 7 before the C press on the thick plate 7 is started by the C press machine 10 based on the measurement results of the shapes of the grooves 8a, 8b. Determine the need for shape correction.
- the groove shape measuring device 6 includes two-dimensional laser distance meters 18a and 18b that measure the groove shape by an optical cutting method, and a determination device 61 that determines the necessity of correcting the groove shape.
- the main feature of the manufacturing apparatus 1 is that the shape of the grooves 8a and 8b of the thick plate 7 is detected by a light cutting method that preferably irradiates the edge portions 7a and 7b of the thick plate 7 with linear laser beams 16a and 16b,
- a groove shape measuring device 6 having a function of notifying the operator 17 of the abnormality is provided between the groove shape processing device 2 such as an edge planar and the C press machine 10, for example. It is in the point to arrange in.
- the UOE steel pipe 30 is manufactured by an apparatus obtained by removing the groove shape measuring apparatus 6 from the manufacturing apparatus 1 shown in FIG. 1, but the groove shape processing apparatus 2 (for example, the relationship between the respective process capability balances) In many cases, for example, between the edge planer) and the C press 10, the thick plate 7, which is an intermediate product in which the grooves 8 a and 8 b are formed, is temporarily held.
- a groove shape measuring device 6 is newly installed immediately downstream of the groove shape processing device 2 such as an edge planer, and the measurement result of the groove shape measuring device 6 is fed back to the operator 17 so that C The operator 17 can perform necessary measures on the grooves 8a and 8b of the thick plate 7 before the C press by the press machine 10 is performed.
- the method of feedback to the operator 17 is not particularly limited, for example, (i) a method of only issuing an alarm and notifying the operator, or (ii) a method of automatically stopping the conveying device 3 together with the alarm, and the like. What is necessary is just to select suitably according to the structure of a process.
- the difference between the appropriate shape of the grooves 8a and 8b input in advance and the shape of the measured grooves 8a and 8b is calculated.
- this difference is detected and deviates from the reference range, it is possible to determine that the shapes of the grooves 8a and 8b are defective.
- a plurality of linear laser beams 16a and 16b are irradiated in the conveying direction of the thick plate 7 and the above case is detected twice or more, it is determined that the shapes of the grooves 8a and 8b are defective. By doing so, accidental malfunctions can be prevented and the reliability of the groove shape measuring device 6 can be improved, which is more desirable.
- the shape (cross-sectional shape) of the grooves 8a and 8b of the thick plate 7 by the groove shape measuring device 6 is measured using the linear laser beams 16a and 16b and the grooves 8a and 8b of the thick plate 7 and the two-dimensional laser distance. This is done by measuring the distance in the thick plate width direction to the total 18a, 18b. Then, the difference between the groove 8a and 8b input in advance and the appropriate cross-sectional shape is detected, and when this difference is 5 mm or more, it is determined that the groove 8a or 8b has a shape defect. Is done.
- FIG. 2 is an explanatory diagram showing an example of the shape of the groove 8b of the thick plate 7 (the relationship between the angle and the thickness in the thickness direction). Since the groove 8a is formed symmetrically with the groove 8b, the description of FIG. 2 will be made with the groove 8b as an example.
- the groove shape measuring device 6 can measure the angle ( ⁇ 1 to ⁇ 3) of each part of the groove 8b and the thickness (X1 to X3) in the plate thickness direction having the angles ( ⁇ 1 to ⁇ 3). It is. For this reason, the operator 17 easily adjusts the setting of the super hard bit of the groove shape processing apparatus 2 (for example, the edge planer) based on the angle ( ⁇ 1 to ⁇ 3) and the thickness (X1 to X3) of the groove 8b. be able to.
- FIG. 3 is an explanatory view showing a situation where the two-dimensional laser distance meters 18a and 18b measure the shapes of the grooves 8a and 8b of the thick plate 7.
- FIG. 3 Above the thick plate 7 transported by the transport roll 9, a frame 19 is bridged in the width direction of the thick plate 7 and fixedly arranged.
- the two-dimensional laser distance meter 18 b is fixedly disposed via a bracket 20 that is fixedly disposed on one end side of the frame 19.
- the two-dimensional laser distance meter 18a is arranged to be movable in the width direction of the thick plate 7 via a bracket 22 arranged to be movable in the width direction of the thick plate 7 with respect to the frame 19 by the stepping motor 21.
- the two-dimensional laser rangefinder 18a is configured to automatically move to a position suitable for measurement according to the width of the thick plate 7.
- FIG. 4A is an explanatory view showing a case where the thick plate 7 has a kamaboko shape
- FIG. 4B is an explanatory view showing a case where the tip of the thick plate 7 has a warped shape.
- the two-dimensional laser distance meters 18a and 18b use a light cutting method in which the edge portions 7a and 7b of the thick plate 7 are irradiated with the linear laser beams 16a and 16b, and the portions where the linear laser beams 16a and 16 are irradiated.
- the cross-sectional shape is measured, and the linear laser beams 16a and 16b are irradiated with a spread as shown in FIGS.
- the thick plate 7 is kamaboko as shown in FIG. It is possible to measure the shape of the entire cross section of the grooves 8a and 8b of the thick plate 7 even when it has a shape or when the tip of the thick plate 7 has a warped shape as shown in FIG. It is.
- FIG. 5 is an explanatory diagram showing the positional relationship between the transport roll and the groove shape measuring device 6 (two-dimensional laser distance meters 18a and 18b). Since the thick plate 7 is stably transported in the vicinity of the transport roll 9, the laser beam irradiation port of the two-dimensional laser distance meters 18 a, 18 b is arranged near the transport roll 9, so that the groove 8 a, The shape of 8b can be detected stably.
- the laser beam irradiation ports of the two-dimensional laser distance meters 18a and 18b may be arranged at a position downstream of the transport roll 9 in the transport direction of the thick plate 7, specifically, at a position downstream of the transport roll 9 by about 500 mm in the transport direction. This is desirable because it enables stable measurement. Thereby, even if the thick plate 7 is relatively thin, it is difficult to be affected by the warp of the thick plate 7 tip, and can be measured accurately.
- the grooves 8a and 8b have a gloss like a mirror surface
- the arrangement is such that the regular reflection light of the linear laser beams 16a and 16b is incident on the light receiving elements of the two-dimensional laser distance meters 18a and 18b.
- the two-dimensional laser distance meters 18a and 18b are arranged so as to be inclined by, for example, 5 to 10 ° with respect to the conveying direction of the thick plate 7 from the above arrangement, so that the linear laser beams 16a and 16b are formed at the groove. It is desirable to suppress the amount of reflected light by irradiating obliquely.
- the groove shape measuring apparatus 6 measures the shapes of the grooves 8a and 8b of the thick plate 7 using the linear laser beams 16a and 16b spreading in the thickness direction of the thick plate 7. Further, it is desirable that the groove shape measuring device 6 measures the shapes of the grooves 8 a and 8 b in the vicinity of the transport roll 9 constituting the transport device 3 and on the exit side in the transport direction of the thick plate 7.
- FIG. 6 is a graph showing an example of the measurement result of the shape of the groove 8b by the groove shape measuring device 6. As shown in the graph of FIG. 6, since the groove 8b is measured in the thickness direction and the width direction of the thick plate 7, the entire cross-sectional shape of the groove 8b is accurately measured.
- the groove shape measuring device 6 desirably measures the shapes of the grooves 8a and 8b at a pitch of about 10 mm in the conveying direction of the thick plate 7 from the viewpoint of the reliability of the measured value. If the transport speed of the thick plate 7 is 60 m / min, for example, as shown in FIG.
- two two-dimensional laser distance meters 18a-1, 18a-2 and 18b-1, 18b-2 (on one side in the transport direction) These are not shown), and the two-dimensional laser rangefinders 18a-1, 18a-2 and 18b-1, 18b-2 are arranged on the grooves 8a, 8b of the thick plate 7 at the same period with a pitch of about 20 ms.
- the position of the linear laser beam to be measured and irradiated is between the two-dimensional distance meter 18a-1 and the two-dimensional distance meter 18a-2, and between the two-dimensional distance meters 18b-1 and 18b-2. It is desirable to measure at an accurate 10 mm pitch with a shift of 10 mm.
- the warp suppressor 23 has a roof-type steel plate 23a whose height decreases from the plate entry side toward the plate conveyance direction, and suppresses warpage of, for example, 80 mm or more generated in the thick plate 7 by the roof-type steel plate 23a. can do.
- the groove shape measuring device 6 can measure the shapes of the grooves 8a and 8b of the thick plate 7 with high accuracy, not only the shape of the grooves 8a and 8b itself but also the groove 8a, It also has a foreign matter adhesion detection function for detecting whether or not foreign matter (for example, chips) adheres to 8b (in the present invention, foreign matter adhesion is also a kind of shape defect).
- FIG. 7 is an explanatory view schematically showing a test procedure that verifies that the groove shape measuring apparatus 6 can detect the presence or absence of foreign matter (for example, chips) on the grooves 8a and 8b.
- chips 25 are attached to various positions on a temporary work 24 simulating a thick plate, and a linear laser beam 27 is temporarily transmitted from a two-dimensional laser distance meter 26 (trade name LJ-G200, manufactured by Keyence Corporation).
- the workpiece 24 and the chips 25 were irradiated and the reflected light was detected to measure the shape. Moreover, the shape was measured even in the state where the chips 25 were not attached.
- FIG. 8 shows a case where the chips 25 do not adhere to the temporary workpiece 24
- FIG. 9 shows a case where the chips 25 adhere to the center of the temporary workpiece 24
- FIG. 10 shows a position 10 mm from the upper surface of the temporary workpiece 24
- FIG. 11 shows a case where the chips 25 adhere to the central part of the temporary work 24.
- the groove shape measuring device 6 causes foreign matter (for example, chips) to adhere to the grooves 8 a and 8 b. It can be seen that the presence or absence can be reliably detected.
- the thick plate 7 in which the grooves 8a and 8b are formed in the edge portions 7a and 7b by the groove processing device 2 before the C press by the C press machine 10 is performed by the groove shape measuring device 6.
- the shapes of the grooves 8a and 8b are measured as described above.
- the groove shape measuring apparatus 6 determines the shape of the grooves 8a and 8b of the thick plate 7 before the C press by the C press machine 10 is started based on the measurement result. Determine the need for correction.
- the groove shape measuring device 6 does not output an alarm or the like to the operator 17 when determining that the shape of the grooves 8a and 8b of the thick plate 7 need not be corrected.
- the thick plate 7 is sent to the steel pipe forming apparatus 4 as it is, and subjected to C press by the C press machine 10, U press by the U press machine 11, and O press by the O press machine 12 to open pipe 13 To be molded.
- the open pipe 13 is sent to the welding device 5, the grooves 8 a and 8 b are butted and welded to form a steel pipe 14, and the steel pipe 14 is further sent to the pipe expansion processing apparatus 15 to be subjected to pipe expansion processing.
- the UOE steel pipe 30 is obtained.
- the groove shape measuring device 6 outputs an alarm or the like to the operator 17 when determining that the shape of the grooves 8a and 8b of the thick plate 7 needs to be corrected.
- the operator 17 stops the groove processing device 2 at one end and, for example, the angles ( ⁇ 1 to ⁇ 3) and the thicknesses (X1 to X3) of the grooves 8a and 8b output by the groove shape measuring device 6.
- the setting of the ultra-hard bit of the groove processing apparatus 2 is adjusted so that the appropriate angle ( ⁇ 1 to ⁇ 3) and thickness (X1 to X3) are obtained.
- channels 8a and 8b is correct
- the thick plate 7 in which the shapes of the grooves 8a and 8b are corrected in this way is sent to the steel pipe forming device 4, where the C press by the C press machine 10, the U press by the U press machine 11, and the O press. O press by the press machine 12 is performed and the open pipe 13 is formed.
- the open pipe 13 is sent to the welding device 5, the grooves 8 a and 8 b are butted and welded to form a steel pipe 14, and the steel pipe 14 is further sent to the pipe expansion processing apparatus 15 to be subjected to pipe expansion processing.
- the UOE steel pipe 30 is obtained.
- the dedicated plate shape measuring device 6 for measuring the shapes of the grooves 8a and 8b of the thick plate 7 is used to measure the thick plate by the groove processing device 2 such as an edge planer. 7 determines whether or not the shapes of the grooves 8a and 8b formed on the edge portions 7a and 7b are appropriate. If not, the operator 17 needs to correct the shapes of the grooves 8a and 8b. Can be output quickly. For this reason, the UOE steel pipe 30 can be manufactured while preventing an increase in the number of man-hours and a decrease in the yield due to the abnormal shape of the grooves 8a and 8b.
- the present invention it becomes possible to adjust the cutting amount of the super hard tool of the groove processing device 2 such as an edge planer very quickly, which has occurred at the start of the manufacture of UOE steel pipes so far. It is also possible to suppress the occurrence of poor welding.
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Abstract
Description
、早急に解決が求められる技術課題である。
これらの本発明では、前記線状レーザ光を前記鋼板の搬送方向に複数照射することが好ましい。
はじめに、本実施形態に係る製造装置について説明する。図1は、本実施形態の概要を模式的に示す説明図である。
開先加工装置2は、外径が20~60インチ程度の大径のUOE鋼管30の素材である厚板(板厚6~50mm程度の鋼板)7のエッジ部7a、7bに開先を形成するための装置である。
搬送装置3は、エッジ部7a、7bに開先8a、8bが形成された厚板7を鋼管成形装置4へ搬送するための装置である。搬送装置3は、搬送方向へ並設された多数の搬送ロール9により構成される。
搬送装置3は当業者にとっては周知であるので、搬送装置3に関するこれ以上の説明は省略する。
鋼管成形装置4は、Cプレス機10、Uプレス機11およびOプレス機12を有し、開先8a、8bが形成された厚板7をオープンパイプ13に成形するための装置である。
溶接装置5は、オープンパイプ13の開先8a、8bを突き合わせて溶接するための装置である。溶接装置5は当業者にとっては周知であるので、溶接装置5に関するこれ以上の説明は省略する。
開先形状測定装置6は、開先加工装置2とCプレス機10との間に配置されて、Cプレス機10によるCプレスが施される前の厚板7の開先8a、8bの形状を測定するための装置である。
搬送ロール9により搬送される厚板7の上方には、フレーム19が厚板7の幅方向へ架け渡されて固定配置される。二次元レーザ距離計18bは、フレーム19の一端側に固定配置されるブラケット20を介して、固定配置される。一方、二次元レーザ距離計18aは、ステッピングモータ21によってフレーム19に対して厚板7の幅方向へ移動自在に配置されたブラケット22を介して、厚板7の幅方向へ移動自在に配置される。これにより、二次元レーザ距離計18aは、厚板7の幅に応じて自動的に測定に適した位置に移動するように構成される。
二次元レーザ距離計18a、18bは、線状レーザ光16a、16bを厚板7のエッジ部7a、7bに照射する光切断法を用いて、線状レーザ光16a、16が照射された部位の断面形状を測定するものであり、線状レーザ光16a、16bを、図1、3に示すように広がりを持って照射する。このため、図4(a)に示すようにレーザ検出域Lを想定される厚板7の断面の上下方向の可動域以上に設定すると、図4(a)に示すように厚板7がかまぼこ形状を有する場合や、図4(b)に示すように厚板7の先端が反った形状を有する場合においても、厚板7の開先8a、8bの全断面の形状を測定することが可能である。
搬送ロール9の近傍では、厚板7が安定して搬送されることから、二次元レーザ距離計18a、18bのレーザ光照射口を、搬送ロール9の近くに配置することにより、開先8a、8bの形状を安定して検出することができる。
例えば、開先形状測定装置6は、厚板7の搬送方向に約10mmピッチで開先8a、8bの形状を測定することが、測定値の信頼性の観点から望ましい。厚板7の搬送速度が例えば60m/minであるとすると、図5に示すように、搬送方向に片側2つの二次元レーザ距離計18a-1、18a-2および18b-1、18b-2(これらは図示せず)を配設し、各二次元レーザ距離計18a-1、18a-2および18b-1、18b-2が約20msピッチの同一周期で厚板7の開先8a、8bの形状を測定し、且つ照射する線状レーザ光の位置を二次元距離計18a-1と二次元距離計18a-2との間、二次元距離計18b-1、18b-2との間で、それぞれ10mmずらして正確に10mmピッチで測定することが望ましい。
図7は、開先形状測定装置6が開先8a、8bへの異物(例えば切粉)の付着の有無を検出できることを検証した試験の要領を模式的に示す説明図である。
本発明では、開先加工装置2によってエッジ部7a、7bに開先8a、8bが形成された厚板7について、開先形状測定装置6によって、Cプレス機10によるCプレスが施される前の開先8a、8bの形状が、上述したようにして測定される。
2 開先加工装置
3 搬送装置
4 鋼管成形装置
5 溶接装置
6 開先形状測定装置
7 厚板
7a、7b エッジ部
8a、8b 開先
9 搬送ロール
10 Cプレス機
11 Uプレス機
12 Oプレス機
13 オープンパイプ
14 鋼管
15 拡管加工装置
16a、16b 線状レーザ光
17 オペレータ
18a、18b 二次元レーザ距離計
18a-1、18a-2、18b-1、18b-2 二次元レーザ距離計
19 フレーム
20 ブラケット
21 ステッピングモータ
22 ブラケット
23 反り抑制器
24 仮ワーク
25 切粉
26 二次元レーザ距離計
27 線状レーザ光
30 UOE鋼管
Claims (5)
- エッジ部に開先が形成された鋼板に、Cプレス、UプレスおよびOプレスを順次施してオープンパイプとし、該オープンパイプの開先を突き合わせて溶接するUOE鋼管の製造方法であって、
前記Cプレスが施される前の前記鋼板の前記開先の形状を測定し、該測定結果に基づいて、該Cプレスが開始される前に、前記鋼板の前記開先の形状の修正の必要性を判定することを特徴とするUOE鋼管の製造方法。 - 前記開先の形状は、前記鋼板の厚み方向に広がる線状レーザ光を前記鋼板のエッジ部に照射する光切断法により測定することを特徴とする請求項1に記載のUOE鋼管の製造方法。
- 前記線状レーザ光を前記鋼板の搬送方向に複数照射することを特徴とする請求項1又2に記載のUOE鋼管の製造方法。
- 前記鋼板は、前記開先を形成された後、前記Cプレスが施されるCプレス機までの間を搬送ロールにより搬送され、且つ、前記開先の形状は、前記搬送ロールの近傍であって前記鋼板の搬送方向の出側で測定されることを特徴とする請求項1から3のいずれかに記載のUOE鋼管の製造方法。
- 鋼板のエッジ部に開先を形成するための開先加工装置と、
前記開先が形成された鋼板を搬送するための搬送装置と、
Cプレス機、Uプレス機およびOプレス機を有し、前記開先が形成された鋼板をオープンパイプに成形する鋼管成形装置と、
前記オープンパイプの開先を突き合わせて溶接する溶接装置とを備えるUOE鋼管の製造装置であって、
前記開先加工装置と前記Cプレス機との間に、前記Cプレス機によるCプレスが施される前の前記鋼板の前記開先の形状を測定する開先形状測定装置を備え、
前記開先形状測定装置は、前記開先の形状の測定結果に基づいて、前記Cプレスが開始される前に、前記鋼板の前記開先の形状の修正の必要性を判定することを特徴とするUOE鋼管の製造装置。
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CN201180016375.1A CN102821886B (zh) | 2010-03-26 | 2011-03-25 | Uoe钢管的制造方法和制造装置 |
EP11759587.6A EP2554286B1 (en) | 2010-03-26 | 2011-03-25 | Method and apparatus for manufacturing uoe steel pipe |
JP2011513777A JP4883429B2 (ja) | 2010-03-26 | 2011-03-25 | Uoe鋼管の製造方法および製造装置 |
US13/621,938 US20130256275A1 (en) | 2010-03-26 | 2012-09-18 | Manufacturing method and manufacturing apparatus for uoe steel pipe or tube |
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JP2016087652A (ja) * | 2014-11-05 | 2016-05-23 | Jfeスチール株式会社 | 厚鋼板反り検出方法および装置 |
JP2020122709A (ja) * | 2019-01-30 | 2020-08-13 | Jfeスチール株式会社 | 鍛造プレス装置、鍛造プレス方法及び金属材の製造方法 |
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EP3000542B1 (en) * | 2013-05-20 | 2021-02-24 | JFE Steel Corporation | Bending press device, bending press method, device for producing steel pipe, and method for producing steel pipe |
CN105032980B (zh) * | 2015-09-09 | 2017-07-11 | 航天海鹰(哈尔滨)钛业有限公司 | 一种薄壁钛合金复杂变截面管材的成形方法及应用 |
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JPWO2011118783A1 (ja) | 2013-07-04 |
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