WO2010073863A1 - Procédé de production de tuyau métallique sans soudure par laminage à froid - Google Patents

Procédé de production de tuyau métallique sans soudure par laminage à froid Download PDF

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Publication number
WO2010073863A1
WO2010073863A1 PCT/JP2009/069823 JP2009069823W WO2010073863A1 WO 2010073863 A1 WO2010073863 A1 WO 2010073863A1 JP 2009069823 W JP2009069823 W JP 2009069823W WO 2010073863 A1 WO2010073863 A1 WO 2010073863A1
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WO
WIPO (PCT)
Prior art keywords
cold
rolling
outer diameter
reduction rate
pipe
Prior art date
Application number
PCT/JP2009/069823
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English (en)
Japanese (ja)
Inventor
千博 林
Original Assignee
住友金属工業株式会社
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 住友金属工業株式会社 filed Critical 住友金属工業株式会社
Priority to CN200980149550.7A priority Critical patent/CN102245320B/zh
Priority to CA2743165A priority patent/CA2743165C/fr
Priority to ES09834667.9T priority patent/ES2533620T3/es
Priority to KR1020117012333A priority patent/KR101311598B1/ko
Priority to EP09834667.9A priority patent/EP2390016B1/fr
Priority to JP2010543983A priority patent/JP4893858B2/ja
Publication of WO2010073863A1 publication Critical patent/WO2010073863A1/fr
Priority to US13/162,840 priority patent/US20110271731A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B21/00—Pilgrim-step tube-rolling, i.e. pilger mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
    • B21B17/14—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling without mandrel, e.g. stretch-reducing mills
    • 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
    • B21B19/06—Rolling hollow basic material, e.g. Assel mills
    • B21B19/10—Finishing, e.g. smoothing, sizing, reeling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B21/00—Pilgrim-step tube-rolling, i.e. pilger mills
    • B21B21/005—Pilgrim-step tube-rolling, i.e. pilger mills with reciprocating stand, e.g. driving the stand
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B21/00—Pilgrim-step tube-rolling, i.e. pilger mills
    • B21B21/02—Rollers therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/02—Transverse dimensions
    • B21B2261/04—Thickness, gauge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/02—Transverse dimensions
    • B21B2261/08—Diameter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2265/00—Forming parameters
    • B21B2265/14—Reduction rate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B23/00—Tube-rolling not restricted to methods provided for in only one of groups B21B17/00, B21B19/00, B21B21/00, e.g. combined processes planetary tube rolling, auxiliary arrangements, e.g. lubricating, special tube blanks, continuous casting combined with tube rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • B21B3/02—Rolling special iron alloys, e.g. stainless steel

Definitions

  • the present invention relates to a method for cold rolling a seamless metal tube, and in particular, manufacturing a high-quality seamless metal tube by cold rolling to guarantee the inner surface quality of a high-grade special tube from the viewpoint of suppressing wrinkle wrinkles on the inner surface of the tube. It is about the method.
  • Seamless metal pipes are sent to the cold working process when they are in a hot-finished state and do not satisfy quality, strength or dimensional accuracy requirements.
  • a cold drawing method using a die and a plug or a mandrel and a cold rolling method using a cold pilga mill are generally used.
  • Cold rolling with cold pilga mill has a very high degree of processing of the tube material, can be stretched approximately 10 times by rolling, has a great effect of correcting the uneven thickness of the tube, and further does not require a drawing process. There is an advantage that no yield loss occurs.
  • cold rolling with cold pilga mill has the disadvantage that the production efficiency is extremely low compared with the cold drawing method, so that the stainless steel pipe, which is mainly high in material cost and requires intermediate processing costs, Suitable for cold processing of high-grade special pipes such as alloy steel pipes.
  • FIG. 1 is a diagram illustrating a cold rolling mechanism using a cold pilga mill.
  • a pair of rolls 2 having a tapered hole mold 3 whose diameter gradually decreases in the circumferential direction, and a tapered mandrel 4 whose diameter gradually decreases in the length direction,
  • the raw tube 1 is reduced in diameter to obtain a rolled tube 5.
  • a hole mold 3 is cut on the circumference of a pair of rolls 2 of the cold pilga mill, and the shape of the roll 2 becomes narrow as the roll 2 rotates.
  • the roll 2 repeats advancing and retreating along the taper of the mandrel while rotating by driving the roll shaft 2s, and the diameter of the raw tube 1 is reduced between the roll 2 and the mandrel 4 (Non-patent Document 1, etc.).
  • FIG. 2 is an explanatory diagram showing the cold rolling process principle using a cold pilga mill, wherein FIG. 2A shows the processing status at the starting point of the forward stroke, and FIG. 2B shows the processing status at the starting point of the backward stroke. Yes.
  • FIG. 2 in the cold Pilgar mill, depending on the outer diameter and thickness dimension (do, to in the figure) and the outer diameter and thickness dimension of the product (d, t in the figure).
  • the roll 2 having the tapered hole mold 3 whose diameter gradually decreases from the biting inlet side to the finishing outlet side of the pair of rolls, and the diameter gradually increasing from the biting inlet side toward the finishing outlet side.
  • the taper-shaped mandrel 4 that is reduced is employed, and the reciprocating rolling process in which the thickness is reduced while the diameter of the base tube 1 is reduced is repeated.
  • the tube 1 is intermittently given a rotation angle of approximately 60 ° and a feed of approximately 5 to 15 mm, and rolling of a new part of the tube is repeated. .
  • Cold Pilgamil has a rolling mill developed by “MANNESMANN-DEMAG” that reduces the thickness in both the forward and backward strokes, and a rolling mill developed by “BLAWKNOX” that reduces the thickness only in the forward stroke.
  • MANNESMANN-DEMAG a rolling mill developed by “MANNESMANN-DEMAG” that reduces the thickness in both the forward and backward strokes
  • BLAWKNOX a rolling mill developed by “BLAWKNOX” that reduces the thickness only in the forward stroke.
  • the former is used for rolling stainless steel pipes, high alloy pipes or zirconium pipes
  • the latter type of rolling mill is used for rolling aluminum and its alloy pipes and copper and its alloy pipes.
  • the present invention has been made in view of the above-mentioned problems, and its object is to propose a method for producing a high-quality seamless steel pipe in cold rolling using a cold pilga mill.
  • a cold pilgamill (MANNESMANN-DEMAG) that rolls in both reciprocating strokes will be described.
  • the object is not limited to this, and a cold pilgamill (thickness squeezed only in the forward stroke) BLAWKNOX) is also applicable.
  • the present inventor has made various studies, and as a result, in cold rolling of seamless metal pipes by cold pilgamil, the outer diameter reduction rate is excessive compared to the wall thickness reduction rate. As a result, it has been found that the circumferential compressive stress applied to the raw tube becomes excessive and wrinkles are likely to occur on the inner surface of the tube.
  • the present invention has been completed on the basis of the above findings, and the gist thereof is the following (1) and (2) a method for producing a seamless metal tube by cold rolling.
  • a method for producing a seamless metal pipe by a cold pilga mill which proceeds from the biting inlet side to the finishing outlet side of a pair of rolls according to the outer diameter and the wall thickness of the raw pipe and the product rolled pipe.
  • the thickness is reduced while reducing the diameter.
  • the outer diameter reduction rate Rd is set to 1/2 or less of the wall thickness reduction rate Rt.
  • a raw pipe finished by hot rolling under a condition of an outer diameter reduction rate of 77% or less by a stretch reducer is used. Is desirable. In addition, it is desirable to use a raw tube finished by hot rolling with a sizer under a condition that the outer diameter reduction rate is 33% or less.
  • the processing balance between the outer diameter reduction rate Rd and the wall thickness reduction rate Rt is achieved. Therefore, generation
  • the product quality after cold rolling is further improved by limiting the outer diameter reduction rate of constant diameter rolling (stretch reducer or sizer). Can do.
  • FIG. 3 is a diagram showing a divided model of a pipe cross section rolled by a cold pilga mill.
  • the tube cross section can be divided into regions of the groove bottom side 11, 14 and the flange side 12, 13.
  • the groove bottom sides 11 and 14 are subjected to wall thickness processing by a roll and a mandrel 4 and stretch-rolled, and the flange sides 12 and 13 are pulled and deformed by stretching on the groove bottom side. That is, the material on the groove bottom sides 11 and 14 is deformed under external pressure, internal pressure and axial compression force, and the material on the flange sides 12 and 13 is deformed under external pressure and axial tension.
  • FIG. 4A and 4B are diagrams showing deformation behavior of a pipe cross section rolled by a cold pilga mill.
  • FIG. 4A is a deformation behavior in forward rolling (forward rolling)
  • FIG. 4B is a backward stroke.
  • the deformation behavior in rolling (re-rolling) is shown.
  • the deformation behavior shown in FIG. 4 is based on a processing pattern in which the turn of the tube 1 is given only in the forward rolling and not in the reverse rolling. From the viewpoint of the pipe material, the roll is rotated relative to the pipe material only in the forward stroke. However, there is no relative rotation in the return stroke.
  • the cold pilga mill (MANNESMANN-DEMAG), which rolls in both reciprocating strokes, basically has a 60 ° turn. It is not symmetric with respect to the vertical axis, but is asymmetrical deformation.
  • sections 11 and 14 indicate the groove bottom side
  • sections 12 and 13 indicate the flange side.
  • the ratio of the outer diameter reduction rate Rd to the thickness reduction rate Rt determines the quality of the product.
  • the pipe manufactured by the Mannesmann mandrel mill process is generated in the hot drawing rolling process. There are internal wrinkles that appear and are further encouraged in the cold rolling process.
  • FIG. 5 is a diagram for explaining an example of a manufacturing process of a Mannesmann mandrel mill process for manufacturing a seamless steel pipe hot.
  • a solid round billet 21 heated to a predetermined temperature is used as a material to be rolled, the round billet 21 is fed to a piercing and rolling machine 23, and the axial center portion is pierced to form a hollow piece (or a hollow element).
  • Tube 22 is manufactured.
  • the produced hollow piece 22 is fed as it is to a drawing and rolling device of the subsequent mandrel mill 24 and drawn and rolled to obtain a hollow shell (or a raw tube) 22.
  • the material temperature of the hollow shell 22 is lowered during drawing by the mandrel bar 24b inserted on the inner surface of the hollow shell 22 and the rolling roll 24r that regulates the outer surface of the hollow shell. For this reason, the hollow shell 22 rolled by the mandrel mill 24 is then charged into the reheating furnace 25 and reheated. Then, it becomes the seamless steel pipe hot-rolled through constant diameter rolling of the stretch reducer 26 or a sizer (not shown). If the temperature drop in the mandrel mill is small, a reheating furnace is unnecessary.
  • the hollow shell 22 is passed through the rolling roll 26r without using the inner surface regulating tool such as a mandrel. Since it is finished by drawing, wrinkles are likely to occur on the inner surface of the hot-finished steel pipe.
  • the present inventor used as a test material an element tube that has been drawn and rolled with a stretch reducer and a sizer, and the outer diameter reduction rate of the draw rolling and the outer diameter reduction rate of the cold rolling and Rolling experiments were carried out with varying thickness reduction rate, and macro-structural observations were repeated to investigate the conditions for suppressing wrinkles.
  • a cold pilga mill is taken into consideration that the element pipe subjected to hot constant diameter rolling is an object.
  • a raw pipe finished by hot drawing and rolling under a condition that the outer diameter reduction rate is 77% or less is used.
  • Example 1 A 25Cr-30Ni-3Mo high alloy steel pipe having an outer diameter of 50.8 mm and an inner thickness of 5.5 mm manufactured by a hot extrusion process was used as a test element pipe, and an outer diameter of 38.1 mm and a wall thickness of 2. The diameter was reduced to 4 mm. Feed and turn angles are given at the start of the journey. The experimental conditions are summarized below.
  • Example 2 A cold pill was prepared by using a 25Cr-30Ni-3Mo high-alloy steel pipe with an outer diameter of 48.6 mm and a wall thickness of 6.0 mm manufactured by a cross drill, a mandrel mill and a stretch reducer by the Mannesmann mandrel mill process. The steel was reduced in diameter to 41.0 mm in outer diameter and 2.2 mm in thickness with a gamil. The outer diameter reduction rate in the stretch reducer is 77% or less.
  • the experimental conditions are summarized below.
  • the outer diameter reduction rate of the stretch reducer is 77% or less, but because it is drawn and rolled while applying the maximum tension between the stands by full stretch setup, the occurrence of wrinkles on the inner surface is suppressed as much as possible. In the product after rolling, the occurrence of inner surface wrinkles due to wrinkle wrinkles was slight, and satisfactory inner surface quality was obtained.
  • Example 3 A cold pillga was prepared by using a 25Cr-30Ni-3Mo high alloy steel pipe with an outer diameter of 101.6 mm and a wall thickness of 7.0 mm manufactured by a cross drilling machine, mandrel mill and sizer by the Mannesmann mandrel mill process. The diameter was reduced by a mill to an outer diameter of 88.9 mm and a wall thickness of 2.8 mm. The outer diameter reduction rate in the sizer is 33% or less.
  • the experimental conditions are summarized below.
  • the outer diameter reduction rate of the sizer is 33% or less, which is considerably smaller than the outer diameter reduction rate of the stretch reducer, so the occurrence of wrinkles on the inner surface is suppressed as much as possible.
  • the generation of internal wrinkles due to wrinkle wrinkles was slight, and satisfactory internal surface quality was obtained.
  • the processing balance between the outer diameter reduction rate Rd and the wall thickness reduction rate Rt is achieved. Therefore, generation
  • the product quality after cold rolling is further improved by limiting the outer diameter reduction rate of constant diameter rolling (stretch reducer or sizer). Can do. By these, it can apply widely as a manufacturing method of the high quality seamless metal pipe by cold rolling.

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

Abstract

Selon l'invention, en laminage à froid d'un tuyau métallique sans soudure au moyen d'un laminoir à froid à pas de pèlerin, une réduction trop importante du diamètre extérieur par comparaison avec la réduction de l'épaisseur de paroi et crée une contrainte périphérique trop importante sur les côtés de bride, ce qui a pour conséquence une contrainte de compression périphérique trop importante, et l'apparition de ce fait de rides sur la surface intérieure du tuyau. En outre, les rides sont repliées sur le côté inférieur de rainure pour créer des plis de fermeture à froid. La répétition de ces phénomènes entraîne des défauts sur la surface intérieure. Contrairement à un élément de tube fabriqué par un procédé d'extrusion, un élément de tube fabriqué par un procédé de mandrin Mannesmann comporte sur la surface intérieure, des rides qui apparaissent durant le calibrage (à l'aide d'un étireur-réducteur ou d'un calibreur), et les rides sont en outre favorisées par le laminage à froid. Par conséquent, on doit porter attention à ce problème. Au vu de ces faits, on règle le rapport de la réduction de diamètre extérieur à la réduction d'épaisseur de paroi par le laminage à froid à l'aide d'un laminoir à froid à pas de pèlerin à une valeur égale ou inférieure à 1/2, ce par quoi on empêche l'apparition de défauts sur la surface intérieure dans le laminage à froid, et on peut obtenir un tuyau métallique sans soudure de haute qualité avec peu de défauts sur la surface intérieure.
PCT/JP2009/069823 2008-12-24 2009-11-25 Procédé de production de tuyau métallique sans soudure par laminage à froid WO2010073863A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
CN200980149550.7A CN102245320B (zh) 2008-12-24 2009-11-25 利用冷轧制造无缝金属管的方法
CA2743165A CA2743165C (fr) 2008-12-24 2009-11-25 Procede de production de tuyau metallique sans soudure par laminage a froid
ES09834667.9T ES2533620T3 (es) 2008-12-24 2009-11-25 Procedimiento de producción de tuberías metálicas sin costuras mediante laminado en frío
KR1020117012333A KR101311598B1 (ko) 2008-12-24 2009-11-25 냉간 압연에 의한 이음매가 없는 금속관의 제조 방법
EP09834667.9A EP2390016B1 (fr) 2008-12-24 2009-11-25 Procédé de production de tuyau métallique sans soudure par laminage à froid
JP2010543983A JP4893858B2 (ja) 2008-12-24 2009-11-25 冷間圧延による継目無金属管の製造方法
US13/162,840 US20110271731A1 (en) 2008-12-24 2011-06-17 Method for producing seamless metallic tube by cold rolling

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008-327763 2008-12-24
JP2008327763 2008-12-24

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/162,840 Continuation US20110271731A1 (en) 2008-12-24 2011-06-17 Method for producing seamless metallic tube by cold rolling

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Publication Number Publication Date
WO2010073863A1 true WO2010073863A1 (fr) 2010-07-01

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PCT/JP2009/069823 WO2010073863A1 (fr) 2008-12-24 2009-11-25 Procédé de production de tuyau métallique sans soudure par laminage à froid

Country Status (8)

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US (1) US20110271731A1 (fr)
EP (1) EP2390016B1 (fr)
JP (1) JP4893858B2 (fr)
KR (1) KR101311598B1 (fr)
CN (1) CN102245320B (fr)
CA (1) CA2743165C (fr)
ES (1) ES2533620T3 (fr)
WO (1) WO2010073863A1 (fr)

Cited By (2)

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CN102294378A (zh) * 2011-06-21 2011-12-28 吉欣（英德）热轧不锈复合钢有限公司 一种中小管径内复合不锈钢管的制造方法
JP2020044547A (ja) * 2018-09-19 2020-03-26 長野鍛工株式会社 相当ひずみの導入方法

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CN103521521B (zh) * 2013-10-17 2015-11-18 太原科技大学 一种凹辊式管材斜轧张力减径工艺方法
CN104353673A (zh) * 2014-11-04 2015-02-18 辽宁天丰特殊工具制造有限公司 消除钢管内方的定减径机
KR101584300B1 (ko) 2015-06-11 2016-01-11 최광준 맨드릴용 윤활유 공급이 가능한 필거 밀
CN106862273A (zh) * 2017-04-10 2017-06-20 广东科莱博科技有限公司 一种冷轧管的轧制方法
CN109940059B (zh) * 2017-12-21 2021-04-02 有研工程技术研究院有限公司 一种精密薄壁大直径铝合金管材的制备方法
WO2020189140A1 (fr) * 2019-03-15 2020-09-24 Ｊｆｅスチール株式会社 Procédé de fabrication d'un tube en acier carré sans soudure
CN114160605B (zh) * 2021-10-28 2024-05-31 首都航天机械有限公司 一种适用于变截面管子的成形装置及方法
CN115011914B (zh) * 2022-08-08 2022-10-25 西北工业大学 一种医用钴基合金无缝管材的制备方法
CN115318828B (zh) * 2022-09-02 2023-10-27 张家港华裕有色金属材料有限公司 一种用于冷轧金属管的轧制方法
CN115338266B (zh) * 2022-09-02 2023-10-27 张家港华裕有色金属材料有限公司 一种金属管冷轧方法

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See also references of EP2390016A4

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CN102294378A (zh) * 2011-06-21 2011-12-28 吉欣（英德）热轧不锈复合钢有限公司 一种中小管径内复合不锈钢管的制造方法
JP2020044547A (ja) * 2018-09-19 2020-03-26 長野鍛工株式会社 相当ひずみの導入方法
JP7288255B2 (ja) 2018-09-19 2023-06-07 長野鍛工株式会社 相当ひずみの導入方法

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EP2390016A1 (fr) 2011-11-30
ES2533620T3 (es) 2015-04-13
EP2390016A4 (fr) 2013-10-16
CN102245320B (zh) 2015-09-02
JP4893858B2 (ja) 2012-03-07
JPWO2010073863A1 (ja) 2012-06-14
CA2743165A1 (fr) 2010-07-01
US20110271731A1 (en) 2011-11-10
EP2390016B1 (fr) 2015-01-07
CN102245320A (zh) 2011-11-16
KR101311598B1 (ko) 2013-09-26
KR20110071026A (ko) 2011-06-27
CA2743165C (fr) 2013-07-16

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