EP2900394B1 - Deoxidation von schräggewalzten hohlblöcken - Google Patents

Deoxidation von schräggewalzten hohlblöcken Download PDF

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Publication number
EP2900394B1
EP2900394B1 EP13759993.2A EP13759993A EP2900394B1 EP 2900394 B1 EP2900394 B1 EP 2900394B1 EP 13759993 A EP13759993 A EP 13759993A EP 2900394 B1 EP2900394 B1 EP 2900394B1
Authority
EP
European Patent Office
Prior art keywords
tube
inert gas
product
deoxidizer
fluidised
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
EP13759993.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2900394A1 (de
Inventor
Peter Thieven
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Group GmbH
Original Assignee
SMS Group GmbH
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Filing date
Publication date
Application filed by SMS Group GmbH filed Critical SMS Group GmbH
Publication of EP2900394A1 publication Critical patent/EP2900394A1/de
Application granted granted Critical
Publication of EP2900394B1 publication Critical patent/EP2900394B1/de
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Anticipated expiration legal-status Critical

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B25/00—Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
    • 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

Definitions

  • the invention relates to a method for producing a pipe or pipe precursor from a solid body by means of a rolling mill, comprising at least one attacking from the outside of the solid body or the pipe precursor roller, in particular inclined roller, and a hole plug carrying and engaging from inside the pipe or pipe precursor mandrel , Moreover, the invention relates to a rolling mill for carrying out such a method.
  • hollow blocks such as pipes or pipe precursors of metallic solid bodies
  • a perforated plug is supported by a mandrel and continuously transforms a metallic solid body into a hollow block in a hot forming process.
  • the workpiece is usually held in this forming process between two externally attacking skew rollers, via which a rotational movement is applied to the workpiece.
  • the wall thickness of the hollow body is usually determined by the distance between the hole plug and the outer rollers or.
  • One approach to removing the mill scale is, for example, the use of fluidized deoxidizers and the injection of inert gases at least to protect the hollow block interior surfaces of the manufactured pipe or pipe precursor.
  • fluidized deoxidizers and the injection of inert gases at least to protect the hollow block interior surfaces of the manufactured pipe or pipe precursor.
  • Such methods are for example in the DE 1427828 , of the DE 3405771 , of the CH 655516 as well as the WO 2011/083101 described.
  • the blowing of the deoxidizer is carried out in a special Deoxidationsstation after Lochwalzvorgang by coupling a Einblasvoriques on one side and optionally a suction device on the other side of the hollow block.
  • An alternative to this is in the WO 2011/154133 and the DE 1427828 stimulated, in which at or immediately after punching inert gas or deoxidizer are blown through holes in the support rod of the hole plug or through holes in the hole plug itself into the hollow block.
  • Blowing the deoxidizer in a dedicated deoxidizer station requires large amounts of inert gas to first blow out the loose interior scale formed in the meantime and then push the invaded ambient air out of the cavity block and then express excess deoxidizer since they preferentially settle on the first half of the cavity block , Thus, there is the problem that an unnecessarily large amount of deoxidizer must be used to achieve the entire hollow block length. Excess deoxidizer is partly ejected in the rolling mill, partly it burns under violent flame development.
  • the object of the invention was to limit the use of the amount of deoxidizer to the required minimum.
  • a fluidized deoxidizer and / or an inert gas is supplied to the side of the pipe or pipe precursor facing the roll, and upon retraction of the piercer through the pipe or pipe precursor into the interior of the pipe or pipe precursor introduced.
  • tube or tube precursor is obtained continuously, in particular within a period of 10 seconds after puncturing of the solid body, preferably within 5 seconds, particularly preferably within from one second after complete punching of the solid body, inert gas, deoxidizer or a mixture thereof to the at least one roller, in particular oblique roller, facing side of the tube or tube precursor is supplied and then in particular by the action of retraction of the piercing pin through the tube or tube precursor generated negative pressure in the interior of the pipe or pipe precursor is introduced.
  • the negative pressure formed by the retraction of the piercing mandrel in the hollow block is used to draw in inert gas and / or a deoxidizer fluidized by carrier gas.
  • the deoxidizer and optionally also the inert gas is conveyed through the free, arranged on both sides of the end of the hollow block.
  • the supply of deoxidizer and / or inert gas under the effect of the negative pressure generated when retracting the piercer also achieves a lower consumption of deoxidizer and / or Inert gas due to a immediate covering of the hollow block inner surface after punching and turbulence of the deoxidizer and / or inert gas and a distribution in the hollow block without the otherwise usually required excess amounts of carrier gas, inert gas and / or deoxidizer.
  • a device for supplying and introducing fluidized deoxidizer and / or inert gas to the at least one side of the tube or tube precursor facing the roller is provided for this purpose in accordance with the invention.
  • the effects obtainable with the device are the same as those already described above with respect to the method.
  • the supply of fluidized deoxidizer and / or inert gas already takes place before retracting the piercer, so that it is ensured that by retracting the piercer no ambient air, but only inert gas, deoxidizer or a mixture thereof by means of negative pressure in the Hohlblockinnere is introduced.
  • process control simultaneously start the retraction of the piercing mandrel and the supply of fluidized deoxidizer and / or inert gas to thereby minimize the consumption of inert gas and / or deoxidizer to the required minimum.
  • the inflow of air into the interior of the pipe or pipe precursor is at least largely prevented, at least until the beginning of the supply of fluidized deoxidizer and / or inert gas.
  • This can be achieved, for example, by introducing inert gas through the side of the workpiece facing away from the roller, in particular the oblique roller, during the hole mandrel process which has not yet been completed.
  • the supply of fluidized deoxidizer and / or inert gas is advantageously supported, but the introduction and distribution of deoxidizer and / or inert gas within the hollow block is largely effected by the negative pressure generated by the hole plug.
  • the perforation plug is usually only slightly smaller than the inner diameter of the hollow block, a negative pressure forms on retraction of the plug on the side facing away from the abutment of the perforated plug, thus the side facing the roller of the perforated plug.
  • the suction effect is utilized to draw inert gas and / or fluidized deoxidizer in the hollow block itself. Because in this case the injected media does not first have to overcome the resistance of an air mass present in the hollow block and a strong turbulence is generated by the suction effect of the perforated plug, less inert gas and / or deoxidant and a more uniform distribution of the latter are expected in the hollow block.
  • a carrier gas is added to the deoxidizer.
  • the supply and distribution of the deoxidizer to the workpiece and within the hollow block is supported particularly advantageous.
  • the carrier gas the fluidization of the deoxidizer can be achieved by mixing with a gaseous medium.
  • the deoxidizer is pneumatically supplied.
  • a particularly simple and manageable method is used, in which the supply of deoxidizer with particularly easy and precisely adjustable pressures and reliable to the workpiece is guaranteed.
  • a rolling mill for carrying out the method according to the invention according to the first aspect of the invention is disclosed as already described.
  • the rolling mill comprises at least one roller acting on the outside of the solid body or the pipe precursor, in particular a skew roll, and a mandrel bar carrying a hole plug and engaging the pipe or pipe precursor from the inside.
  • An apparatus for supplying and introducing fluidized deoxidizer and / or inert gas is provided, which preferably comprises a means for at least one side sealing of the pipe or pipe precursor to the ambient atmosphere.
  • Such means can be obtained, for example, in the form of a lid which completely covers the through-hole created by the hole plug.
  • a storage for an inert gas and a storage for a deoxidizer and valves for controlling the supply from the respective storage to the pipe or pipe precursor are provided.
  • a process control unit for controlling the supply of deoxidizer and / or inert gas and for controlling the perforated stopper.
  • the supply of inert gas and / or deoxidizer can be adjusted to the movement of the perforated plug, whereby a secure process management with optimized supply of inert gas and / or deoxidizer depending on the process condition is achievable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Control Of Metal Rolling (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Colloid Chemistry (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Metal Extraction Processes (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
EP13759993.2A 2012-09-26 2013-08-29 Deoxidation von schräggewalzten hohlblöcken Active EP2900394B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012019025.5A DE102012019025A1 (de) 2012-09-26 2012-09-26 Deoxidation von schräggewalzten Hohlblöcken
PCT/EP2013/067917 WO2014048670A1 (de) 2012-09-26 2013-08-29 Deoxidation von schräggewalzten hohlblöcken

Publications (2)

Publication Number Publication Date
EP2900394A1 EP2900394A1 (de) 2015-08-05
EP2900394B1 true EP2900394B1 (de) 2016-09-28

Family

ID=49162116

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13759993.2A Active EP2900394B1 (de) 2012-09-26 2013-08-29 Deoxidation von schräggewalzten hohlblöcken

Country Status (12)

Country Link
US (1) US9833820B2 (es)
EP (1) EP2900394B1 (es)
JP (1) JP5976227B2 (es)
CN (1) CN104661767B (es)
BR (1) BR112015005734A2 (es)
DE (1) DE102012019025A1 (es)
ES (1) ES2609026T3 (es)
MX (1) MX357207B (es)
RU (1) RU2610376C2 (es)
SA (1) SA515360180B1 (es)
WO (1) WO2014048670A1 (es)
ZA (1) ZA201500905B (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUB20150855A1 (it) * 2015-05-25 2016-11-25 Sms Innse Spa Impianto ausiliario per un perforatore
CN110116136A (zh) * 2019-06-11 2019-08-13 南通市嘉业机械制造有限公司 一种高强度无缝钢管穿孔顶头
CN111515251B (zh) * 2020-04-09 2022-02-18 鑫鹏源(聊城)智能科技有限公司 一种用于无缝钢管穿孔的扩径装置

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL130355C (es) 1964-09-09
SU631225A1 (ru) * 1977-08-11 1978-11-05 Московский Ордена Трудового Красного Знамени Институт Стали И Сплавов Оправка дл винтовой прошивки
JPS5933011B2 (ja) 1979-01-12 1984-08-13 株式会社東芝 オゾン脱臭装置
JPS55112108A (en) * 1979-02-21 1980-08-29 Nippon Steel Corp Preventing method for surface roughening of product in manufacturing process for seamless steel pipe
SU986534A1 (ru) * 1981-11-27 1983-01-07 Днепропетровский Ордена Трудового Красного Знамени Металлургический Институт Устройство дл подачи жидкости на внутреннюю поверхность труб
JPS5933011A (ja) * 1982-08-19 1984-02-22 Kawasaki Steel Corp 継目無鋼管の製造方法
IT1160196B (it) 1983-02-24 1987-03-04 Dalmine Spa Procedimento di disossidazione a caldo di tubi metallici semilavorati
CH655516B (es) 1983-08-17 1986-04-30
SU1196046A1 (ru) * 1983-11-18 1985-12-07 Уральский научно-исследовательский институт трубной промышленности Способ винтовой прошивки
DE3432288C2 (de) 1984-09-01 1987-01-02 Kocks Technik Gmbh & Co, 4010 Hilden Anwendung von Inertgas beim Herstellen nahtloser Rohre
JPS62286610A (ja) * 1986-06-04 1987-12-12 Sumitomo Metal Ind Ltd 熱間継目無鋼管の製法
CH674477A5 (es) * 1988-03-30 1990-06-15 Lonza Ag
CN100522404C (zh) * 2004-06-18 2009-08-05 住友金属工业株式会社 无缝钢管的制造方法
US8333092B2 (en) * 2005-06-14 2012-12-18 Sumitomo Metal Industries, Ltd. Piercer, plug and method of manufacturing seamless pipe or tube
CN101745555B (zh) * 2009-12-10 2011-09-28 天津钢管集团股份有限公司 钢管坯管内表面除磷方法
CN101767114B (zh) * 2009-12-23 2012-05-30 攀钢集团钢铁钒钛股份有限公司 无缝钢管的管坯内部氧化皮的清除方法
WO2011083101A2 (fr) 2010-01-07 2011-07-14 New Seamless Tube Technology Corp. Laminage à chaud de tubes métalliques sans soudure sur un laminoir continu à mandrin fixe
MX339831B (es) 2010-06-08 2016-06-09 Coating Man Switzerland Gmbh * Metodo para producir tubos sin costura.
DE102010049645A1 (de) * 2010-06-28 2011-12-29 Sms Meer Gmbh Verfahren zum Warmwalzen metallischer Hohlkörper sowie entsprechendes Warmwalzwerk
DE102011012761A1 (de) 2011-03-01 2012-05-24 Sms Meer Gmbh Verfahren und Vorrichtung zum Erzeugen eines Hohlblocks, Innenwerkzeug mit einer Dornstange und einem Lochdorn, Verwendung eines Innenwerkzeugs und Verwendung eines Deoxidationsmittels

Also Published As

Publication number Publication date
CN104661767A (zh) 2015-05-27
ES2609026T3 (es) 2017-04-18
EP2900394A1 (de) 2015-08-05
SA515360180B1 (ar) 2016-03-27
RU2015115637A (ru) 2016-11-20
MX357207B (es) 2018-06-29
US9833820B2 (en) 2017-12-05
US20150196942A1 (en) 2015-07-16
RU2610376C2 (ru) 2017-02-09
DE102012019025A1 (de) 2014-03-27
JP5976227B2 (ja) 2016-08-23
WO2014048670A1 (de) 2014-04-03
CN104661767B (zh) 2016-11-09
JP2015530258A (ja) 2015-10-15
ZA201500905B (en) 2019-10-30
MX2015003808A (es) 2015-07-17
BR112015005734A2 (pt) 2017-07-04

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