WO2004108310A1 - Procede de perçage/laminage destine a la fabrication d'un tube sans soudure - Google Patents

Procede de perçage/laminage destine a la fabrication d'un tube sans soudure Download PDF

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Publication number
WO2004108310A1
WO2004108310A1 PCT/JP2004/007698 JP2004007698W WO2004108310A1 WO 2004108310 A1 WO2004108310 A1 WO 2004108310A1 JP 2004007698 W JP2004007698 W JP 2004007698W WO 2004108310 A1 WO2004108310 A1 WO 2004108310A1
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WO
WIPO (PCT)
Prior art keywords
diameter
roll
rolling
piercing
ratio
Prior art date
Application number
PCT/JP2004/007698
Other languages
English (en)
Japanese (ja)
Inventor
Chihiro Hayashi
Original Assignee
Sumitomo Metal Industries, Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Metal Industries, Ltd. filed Critical Sumitomo Metal Industries, Ltd.
Priority to JP2005506775A priority Critical patent/JP4196991B2/ja
Priority to DE602004031232T priority patent/DE602004031232D1/de
Priority to EP04745554A priority patent/EP1649945B1/fr
Publication of WO2004108310A1 publication Critical patent/WO2004108310A1/fr
Priority to US11/331,100 priority patent/US7146836B2/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
    • B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
    • B21B19/04—Rolling basic material of solid, i.e. non-hollow, structure; Piercing, e.g. rotary piercing mills

Definitions

  • the present invention relates to a method for piercing and rolling a billet in a process of manufacturing a seamless pipe.
  • the present invention relates to a piercing and rolling method capable of producing a thin tube (hollow piece) with a high degree of processing from a billet.
  • Mannesman plug milling and Mannesmann mandrel milling are the most commonly employed methods for producing seamless pipes.
  • a solid billet heated to a predetermined temperature in a heating furnace is pierced by a piercing mill to form a hollow rod-shaped hollow piece, which is mainly reduced in thickness by a stretching mill such as a plug mill or a mandrel mill. And make it a hollow shell.
  • the outer diameter is reduced mainly by a drawing rolling machine such as a sizer or a stretch reducer to obtain a seamless pipe having a predetermined size.
  • the present invention relates to the first piercing and rolling step in the above steps.
  • Patent Documents 1 and 2 First, the invention proposed by the present inventors in Patent Documents 1 and 2 will be described as a conventional technique.
  • Patent Document 1 Japanese Patent Publication No. 5-23842
  • Patent Document 2 Japanese Patent Publication No. 8-4811
  • Patent Document 1 The invention of Patent Document 1 (hereinafter referred to as a "first prior invention”) is a cone-type main port supported at both ends, left and right or up and down across a pass line through which a billet and a hollow piece pass.
  • the inclination angle ⁇ of the roll and the crossing angle ⁇ ⁇ of this main roll are kept within the range of the following equation (1) and set (3), and the diameter d of the solid billet and the hollow
  • the above-mentioned inclination angle ⁇ is an angle formed by the axis of the roll with respect to the horizontal or vertical plane of the pass line.
  • the crossing angle ⁇ is the angle formed by the axis of the roll with respect to the vertical or horizontal plane of the pass line. 8 ° ⁇ ⁇ 20 °
  • the above-mentioned method of the first prior art is remarkably generated in the piercing and rolling step, particularly, in the thin-wall piercing and rolling step with a high working ratio , by maintaining the roll inclination angle ⁇ and the crossing angle ⁇ in appropriate ranges.
  • This is a method in which the rotational forging effect and the added shear deformation are suppressed as much as possible. It also prevents internal flaws (laminate (double cracks occurring at the center of the wall thickness)) that occur in stainless steel and high alloy steel pipes, and distributes circumferential strain ⁇ and wall thickness strain ⁇ .
  • This method is characterized by reducing the operational troubles such as flare-piping of the pipe meat or clogging of the buttocks by optimizing the amount and satisfying the relationship of the above equation (4).
  • the first prior invention described above has made it possible to form pipes of a difficult-to-process material by the Mannesmann pipe forming method, which had to be conventionally made by a tube extrusion method.
  • thin-wall piercing and rolling with a high degree of processing was made possible, which made it possible to omit or shorten the steps in the subsequent elongation rolling and drawing rolling processes. Therefore, this invention was an invention that greatly contributed to streamlining the manufacturing process of seamless pipes.
  • the Mannesmann piercer and the rotary elongator used in the Mannesmann-Plug mill process can replace double piercing and rolling with single piercing instead of double piercing.
  • the Mannesmann-Plug Mill method is a method that goes through the Mannesman piercer ⁇ rotary elongator ⁇ plug mill ⁇ reeler ⁇ sizer process.
  • Mannesmann-mandrel mill the number of mandrel mill stands can be reduced by replacing the Mannesmann piercer with a cross-piercing mill.
  • the Mannesmann-Mandrelminore method is a method that goes through the process of Mannesmann piercer ⁇ Mandrelminore ⁇ Stretch reducer.
  • the Mannesmann-Assel mill system that is, the Mannesmann piercer ⁇ Assel mill
  • the invention of Patent Document 2 (hereinafter referred to as "second prior invention") is an invention made for the purpose of further optimizing the relationship between the diameter of the cone-type main roll and the diameter of the solid billet. is there.
  • second prior invention in order to minimize the effect of the rotary forging and also minimize the additional shearing deformation, the diameter of the gorge portion of the cone-type main roll (ie, the diameter of the roll gouge) D and the billet diameter d
  • the inclination angle ⁇ and the crossing angle ⁇ are maintained within the ranges satisfying the following equations (1) to (3), and the outer diameter d of the solid billet and the outer diameter d and The relationship with the wall thickness t is
  • the inclination angle ⁇ is the angle formed by the axis of the roll with respect to the horizontal or vertical plane of the pass line
  • the intersection angle ⁇ is the angle of the axis of the roll Is the angle made with respect to the horizontal plane.
  • D and ⁇ preferably satisfy the following equation (6).
  • the effect of the method of the present invention is that the rolling forging effect and additional deformation are remarkable, the piercing and rolling specific force is S4.0 or more, the pipe expansion ratio is 1.15 or more, or the ⁇ wall thickness / outside diameter ratio '' of a hollow piece. Can be obtained sufficiently by piercing and rolling at 6.5 or less.
  • the ranges of the values of the inclination angle ⁇ and the crossing angle ⁇ ⁇ ⁇ ⁇ in the method of the present invention are the same as the ranges in the inventions of Patent Document 1 and Patent Document 2 described above. These ranges were determined from the viewpoint of reducing the rotary forging effect and minimizing additional shear deformation.
  • the ratio of logarithmic strain ⁇ in the radial direction to logarithmic strain ⁇ in the circumferential direction is the same as that in the invention of Patent Document 1. This is the reduction in piercing and rolling. It is determined by the principle and principle of how to distribute the amount in the longitudinal and circumferential directions. If the principle and principle are not met, flare (extruding phenomenon), peeling, or clogging of the bottom of the pipe will occur. Occurs, and the piercing and rolling itself stops.
  • a major feature of the present invention is that the roll shape with respect to the billet diameter mainly has a large effect on the rotary forging effect. Hereinafter, this point will be described.
  • the ratio of the inlet diameter D to the outlet diameter D of the cone type roll at the limit of contact between the tube material and the main roll that is, the diameter expansion ratio “D / D”.
  • L / L is also considered as an index, but this is not directly related to the rotational forging effect and the added shear deformation.
  • the pipe expansion ratio “d / d” is larger if compared with the assumption that the crossing angle is
  • the roll design must be made from the viewpoint of reducing the rotary forging effect before the plug during piercing and rolling, and minimizing the additional shearing deformation typified by the circumferential shear strain ⁇ after the piercing and rolling. No. This is because embrittlement of the pipe material due to the rotary forging effect is a cause of the occurrence of internal flaws in the pipe, and additional shear deformation is a cause of internal flaw propagation.
  • the present inventor conducted a piercing and rolling experiment using a carbon steel billet as a test material using a test cross piercing and rolling mill, changing the roll shape, and examined the effect of the roll shape on the rotating forging effect and the added shear deformation.
  • Tables 1 and 2 show the experimental conditions.
  • the thickness t of the hollow piece after the piercing and rolling was set so that the ratio of “thickness Z outer diameter”, that is, (t / d) ⁇ 100 was 2.53%.
  • the effect of the roll shape on the rotary forging effect depends on whether the main roll and the Stop the disc roll and make a "stopper", and collect a plate-shaped micro tensile test specimen with a parallel part 25 mm in diameter direction (guide direction) perpendicular to the axial direction from the tip end of the plug and a thickness of 3 mm. Then, a tensile test was conducted at room temperature, and the effect of the roll shape on the drawing value (%) was examined and evaluated. The rotary forging effect appears more clearly in the reduction value (%) than in the elongation value (%) in the tensile test.
  • the circumferential shear strain ⁇ As the additional shear deformation, attention was paid to the circumferential shear strain ⁇ , and the measurement was performed by a pin embedding method. That is, a plurality of pins were embedded parallel to the axis along the diameter of the solid billet, and the circumferential shear strain ⁇ was measured across the hollow piece after piercing and rolling.
  • the rotary forging effect can be reduced.
  • the range of the inclination angle where the throttle value of the tube material before the plug is larger than the throttle value of the base material is wider.
  • the circumferential expansion strain can be reduced as the pipe expansion ratio decreases and the diameter expansion ratio increases. That is, additional shear deformation can be suppressed. Therefore, even if the expansion ratio is increased, the circumferential shearing deformation does not become too large if the roll crossing angle ⁇ is made sufficiently large so that the expansion ratio becomes large and the roll shape is made appropriate. .
  • the effect of pulling out is weakened. Thereby, the slip phenomenon between the roll and the tubing becomes pronounced. This slip phenomenon is also affected by the billet diameter, the slip increases on the entry side, and the rotational forging effect begins to appear due to the increase in the number of times of rotational forging, and the inclination angle ⁇ at which the pipe material before the plug becomes more brittle than the base material ⁇ Range expands.
  • the number of rotation forgings is the number of rotations of the billet until the billet is inserted into the mouth and reaches the plug tip.
  • additional shear deformation also appears significantly. The extreme case is when the exit diameter D of the roll approaches the entrance diameter D.
  • additional shearing deformation means circumferential shearing.
  • the present inventor has set the roll shape index as the ratio of the pipe expansion ratio "d / d" to the roll expansion ratio "D / D", that is, "(d / d) / (D
  • FIG. 6 shows the roll shape index “(d / d) / (D / D)”, the expansion ratio “d / d”, and the
  • condition under which “dZd” remains as a parameter in each case is an appropriate condition for the roll shape to be appropriate.
  • the diameter of the entrance roll is reduced by ⁇ .
  • the gorge diameter Dg of the roll is set to 4.5 times or more of the billet diameter d,
  • D and D are power tubes which are the inlet diameter and the outlet diameter of the cone-shaped main roll.
  • the material enters at the entrance surface of the main roll and leaves the roll at the exit surface.
  • the diameter of the main roll at the position where the billet enters the roll is D.
  • the main roll diameter at the position where the hollow piece leaves the roll is D.
  • the barrel width L is the sum of L in Fig. 1.
  • the inlet barrel width L should be determined in consideration of the number of finishing reels, as long as the stability of the penetration barrel is not impaired.
  • the barrel width ratio “L / L” is preferably within the following range.
  • Tilt angle 12 °
  • the rolling reduction in the circumferential direction and the thickness direction is appropriate, and the roll shape is also appropriate. Since it has been optimized, piercing and rolling could be performed without any problems even in high-work thin-wall piercing and rolling of high alloy steel having poor hot workability.
  • the relative relationship between the expansion ratio of the tube material and the diameter expansion ratio of the cone-shaped main roll is optimized. Therefore, the rotary forging effect in the piercing and rolling process is significantly suppressed, and the inner surface flaws, which are likely to occur in high-throughput thin-wall piercing and rolling of difficult-to-make materials such as stainless steel and high alloy steel, are more reliably detected. Can be suppressed. According to the method of the present invention, pipe expansion piercing and rolling up to an expansion ratio of 2.0 is possible.
  • the present inventor has proposed a high-crossing angle piercing and rolling method from the viewpoint of reducing the rotational forging effect and suppressing additional shear deformation, and has made several inventions so far.
  • high crossover angle is a necessary condition to suppress the rotary forging effect and suppress the additional shear deformation, but is not a sufficient condition.
  • a necessary and sufficient condition is optimization of the roll shape, and a high crossover angle is a necessary condition of the roll shape optimization.
  • FIG. 1 is a view showing a mode of piercing and rolling.
  • FIG. 3 is a diagram showing the influence of the ratio (dZd).
  • FIG. 4 is a diagram showing a relationship between a diameter expansion ratio (D / D), a pipe expansion ratio (d / d), and a roll inclination angle ( ⁇ ).
  • FIG. 5 is a graph showing the relationship between a diameter expansion ratio (D / D), a pipe expansion ratio (d / d), and a roll crossing angle ( ⁇ ).
  • FIG. 1 A first figure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Control Of Metal Rolling (AREA)

Abstract

La présente invention concerne un procédé de perçage/laminage destiné à la fabrication d'un tube sans soudure, qui permet de supprimer les cisaillements supplémentaires en supprimant l'effet de forgeage rotatif sans réduire d'autant le diamètre du cylindre, caractérisé en ce que l'angle d'inclinaison (β) d'un cylindre principal et l'angle transversal (η) du cylindre principal sont maintenus dans une plage répondant aux équations (1) à (3) suivantes, la relation entre le diamètre extérieur (d0) d'un lopin solide et le diamètre extérieur (d) et l'épaisseur de paroi (t) d'une pièce creuse après perçage/laminage répondant à l'équation (4) suivante, et le diamètre d'entrée (D1) et le diamètre de sortie (D2) du cylindre principal, et (d0), (d) et (η) répondant à l'équation suivante (5) : 8° ≤ β ≤ 20° (1) 5° ≤ η ≤ 35° (2) 15° ≤ β + η ≤ 50° (3) 1,5° ≤ - γr/γυ ≤ 4,5° (4) (d/d0)/(0,75 + 0,025 η) ≤ D2/D1 (5), où, dans l'équation (4), γr = 1n (2t/d0), γυ = 1n {2 (d-t)/d0}.
PCT/JP2004/007698 2003-06-06 2004-06-03 Procede de perçage/laminage destine a la fabrication d'un tube sans soudure WO2004108310A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2005506775A JP4196991B2 (ja) 2003-06-06 2004-06-03 継目無管の製造における穿孔圧延方法
DE602004031232T DE602004031232D1 (de) 2003-06-06 2004-06-03 Bohr-/walzverfahren bei der herstellung von nahtlosen rohren
EP04745554A EP1649945B1 (fr) 2003-06-06 2004-06-03 Procede de per age/laminage destine a la fabrication d'un tube sans soudure
US11/331,100 US7146836B2 (en) 2003-06-06 2006-01-13 Piercing method for manufacturing of seamless pipe

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003162416 2003-06-06
JP2003-162416 2003-06-06

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US10559264 A-371-Of-International 2004-06-03
US11/331,100 Continuation US7146836B2 (en) 2003-06-06 2006-01-13 Piercing method for manufacturing of seamless pipe

Publications (1)

Publication Number Publication Date
WO2004108310A1 true WO2004108310A1 (fr) 2004-12-16

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PCT/JP2004/007698 WO2004108310A1 (fr) 2003-06-06 2004-06-03 Procede de perçage/laminage destine a la fabrication d'un tube sans soudure

Country Status (6)

Country Link
EP (1) EP1649945B1 (fr)
JP (1) JP4196991B2 (fr)
CN (1) CN100509192C (fr)
DE (1) DE602004031232D1 (fr)
RU (1) RU2309810C2 (fr)
WO (1) WO2004108310A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7293443B2 (en) 2004-01-16 2007-11-13 Sumitomo Metal Industries, Ltd. Method for manufacturing seamless pipes or tubes
WO2008081866A1 (fr) * 2006-12-28 2008-07-10 Sumitomo Metal Industries, Ltd. Procédé de production de tube en acier sans soudure fait en acier allié à teneur élevée en chrome et à teneur élevée en nickel
JP2013031865A (ja) * 2011-08-01 2013-02-14 Nippon Steel & Sumitomo Metal Corp 強度と低温靱性に優れた継目無鋼管の制御圧延方法
CN105170654A (zh) * 2015-09-15 2015-12-23 鑫鹏源智能装备集团有限公司 具有穿轧一体功能辊型的多功能轧机

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101410196B (zh) * 2006-08-14 2010-09-08 住友金属工业株式会社 无缝钢管的制造方法
CN101708511B (zh) * 2007-12-13 2011-09-28 攀钢集团四川长城特殊钢有限责任公司 纯钛无缝管的制造方法
CA2941344C (fr) 2014-03-19 2017-12-05 Nippon Steel & Sumitomo Metal Corporation Methode de production d'un tuyau metallique sans joint

Citations (3)

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Publication number Priority date Publication date Assignee Title
JPH0523842B2 (fr) * 1987-03-27 1993-04-06 Sumitomo Metal Ind
JPH084811B2 (ja) * 1987-05-29 1996-01-24 住友金属工業株式会社 継目無管の穿孔方法
WO1996021526A1 (fr) * 1995-01-10 1996-07-18 Sumitomo Metal Industries, Ltd. Procede et appareil pour obtenir par perçage des tuyaux metalliques sans soudure

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CA919958A (en) * 1969-11-05 1973-01-30 Sumitomo Metal Industries, Ltd. Piercing rolling apparatus for producing rolled material free from surface torsion
JPS6059042B2 (ja) * 1981-04-10 1985-12-23 住友金属工業株式会社 継目無鋼管の製造方法
DE3844802C2 (de) * 1987-03-27 1995-05-11 Sumitomo Metal Ind Verfahren zum Herstellen nahtloser Rohre
JPS6431505A (en) * 1987-07-24 1989-02-01 Sumitomo Metal Ind Piercing method for seamless pipe
JP2996077B2 (ja) * 1993-11-02 1999-12-27 住友金属工業株式会社 継目無金属管の穿孔圧延方法
US5699690A (en) * 1995-06-19 1997-12-23 Sumitomo Metal Industries, Ltd. Method and apparatus for manufacturing hollow steel bars

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0523842B2 (fr) * 1987-03-27 1993-04-06 Sumitomo Metal Ind
JPH084811B2 (ja) * 1987-05-29 1996-01-24 住友金属工業株式会社 継目無管の穿孔方法
WO1996021526A1 (fr) * 1995-01-10 1996-07-18 Sumitomo Metal Industries, Ltd. Procede et appareil pour obtenir par perçage des tuyaux metalliques sans soudure

Non-Patent Citations (1)

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Title
See also references of EP1649945A4 *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7293443B2 (en) 2004-01-16 2007-11-13 Sumitomo Metal Industries, Ltd. Method for manufacturing seamless pipes or tubes
USRE44308E1 (en) 2004-01-16 2013-06-25 Nippon Steel & Sumitomo Metal Corporation Method for manufacturing seamless pipes or tubes
WO2008081866A1 (fr) * 2006-12-28 2008-07-10 Sumitomo Metal Industries, Ltd. Procédé de production de tube en acier sans soudure fait en acier allié à teneur élevée en chrome et à teneur élevée en nickel
JP2008161906A (ja) * 2006-12-28 2008-07-17 Sumitomo Metal Ind Ltd 高Ｃｒ−高Ｎｉ基合金鋼からなる継目無鋼管の製造方法
US7866199B2 (en) 2006-12-28 2011-01-11 Sumitomo Metal Industries, Ltd. Method for manufacturing seamless steel pipe made of high Cr-high Ni alloy steel
CN101605616B (zh) * 2006-12-28 2011-03-16 住友金属工业株式会社 由高Cr-高Ni基合金钢构成的无缝钢管的制造方法
JP2013031865A (ja) * 2011-08-01 2013-02-14 Nippon Steel & Sumitomo Metal Corp 強度と低温靱性に優れた継目無鋼管の制御圧延方法
KR20140037259A (ko) * 2011-08-01 2014-03-26 신닛테츠스미킨 카부시키카이샤 강도와 저온 인성이 우수한 이음매 없는 강관의 제어 압연 방법
KR101660601B1 (ko) * 2011-08-01 2016-09-27 신닛테츠스미킨 카부시키카이샤 강도와 저온 인성이 우수한 이음매 없는 강관의 제어 압연 방법
CN105170654A (zh) * 2015-09-15 2015-12-23 鑫鹏源智能装备集团有限公司 具有穿轧一体功能辊型的多功能轧机

Also Published As

Publication number Publication date
RU2005141132A (ru) 2006-06-27
JP4196991B2 (ja) 2008-12-17
EP1649945A4 (fr) 2007-04-18
CN1795060A (zh) 2006-06-28
RU2309810C2 (ru) 2007-11-10
JPWO2004108310A1 (ja) 2006-07-20
CN100509192C (zh) 2009-07-08
EP1649945A1 (fr) 2006-04-26
EP1649945B1 (fr) 2011-01-26
DE602004031232D1 (de) 2011-03-10

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