EP2656935B1 - Verfahren zur herstellung eines nahtlosen stahlrohres - Google Patents

Verfahren zur herstellung eines nahtlosen stahlrohres Download PDF

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Publication number
EP2656935B1
EP2656935B1 EP11850562.7A EP11850562A EP2656935B1 EP 2656935 B1 EP2656935 B1 EP 2656935B1 EP 11850562 A EP11850562 A EP 11850562A EP 2656935 B1 EP2656935 B1 EP 2656935B1
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EP
European Patent Office
Prior art keywords
plug
piercing
rolling
lubricant
film
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
EP11850562.7A
Other languages
English (en)
French (fr)
Other versions
EP2656935A1 (de
EP2656935A4 (de
Inventor
Yosuke TATEBAYASHI
Yasuto Higashida
Sumio Iida
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel and Sumitomo Metal Corp
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 Nippon Steel and Sumitomo Metal Corp filed Critical Nippon Steel and Sumitomo Metal Corp
Publication of EP2656935A1 publication Critical patent/EP2656935A1/de
Publication of EP2656935A4 publication Critical patent/EP2656935A4/de
Application granted granted Critical
Publication of EP2656935B1 publication Critical patent/EP2656935B1/de
Active legal-status Critical Current
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
    • 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
    • B21B25/04—Cooling or lubricating mandrels during operation
    • 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
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M173/00—Lubricating compositions containing more than 10% water
    • C10M173/02—Lubricating compositions containing more than 10% water not containing mineral or fatty oils
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/087—Boron oxides, acids or salts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/087—Boron oxides, acids or salts
    • C10M2201/0873—Boron oxides, acids or salts used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/10—Compounds containing silicon
    • C10M2201/102—Silicates
    • C10M2201/103—Clays; Mica; Zeolites
    • C10M2201/1033—Clays; Mica; Zeolites used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/241—Manufacturing joint-less pipes
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/244—Metal working of specific metals
    • C10N2040/247—Stainless steel
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2050/00—Form in which the lubricant is applied to the material being lubricated
    • C10N2050/015—Dispersions of solid lubricants
    • C10N2050/02—Dispersions of solid lubricants dissolved or suspended in a carrier which subsequently evaporates to leave a lubricant coating

Definitions

  • the present invention relates to a method for producing a seamless steel tube/pipe by a Mannesmann tube-making process, and particularly to a method for producing a seamless steel tube/pipe, which enables efficient production of a seamless steel tube/pipe by increasing the life of the plug to be used without reducing the efficiency during piercing-rolling.
  • a seamless steel tube/pipe can be produced by a Mannesmann tube-making process.
  • This tube making process consists of the following steps:
  • a plug In piercing-rolling by a piercer, a plug is used as the piercing tool. Since this plug is mounted on the front edge of a mandrel and is used in that state to pierce a billet which is heated to a temperature as high as about 1200°C, the plug is exposed to a hostile condition in which a high surficial pressure with intense heat is imposed.
  • the plug is made of base metal of hot-working tool steel and, to protect the base metal, a film of oxide scale is formed on the surface of the base metal in advance by heat treatment before the plug is used for piercing-rolling. During piercing-rolling, the scale film on the plug surface blocks the heat transfer from the billet to the plug base metal, and serves as a protection film for preventing seizing between the billet and the plug.
  • the scale film on the plug surface gradually wears as the plug is repetitively used for piecing-rolling. Since the wear of the scale film reduces the thermal insulation effect exerted by the film and accordingly increases the temperature of the plug during piercing, melting-incurred metal loss and thermal deformation of the plug base metal are highly likely to occur. Moreover, when the scale film is lost and the plug base metal comes into direct contact with the billet, seizing will occur, thereby causing flaws on the inner surface of the steel tube/pipe. On that account, the plug is regarded as being unusable at a time when the scale film has been lost, thus reaching the end of its life.
  • Patent Literature 1 discloses a technique in which a water glass-based aqueous solution is adopted as the lubricant, and the conditions for applying the water glass-based aqueous solution to the scale film on the plug surface are specified.
  • the cooling is interrupted at the moment when the surface temperature of the plug becomes not more than 150°C and inside the plug, a portion with a temperature of not less than 100°C is present, and after the water film on the plug surface evaporates, a water glass-based aqueous solution is applied to the plug surface to form a coating film of a water glass-based lubricant.
  • Patent Literature 1 Although the friction resistance between the plug and the billet will decrease during piercing-rolling, the scale film will excessively react with the water glass-based lubricant, and thereby will peel off so that increase of the life of plug can hardly be expected in reality. Moreover, since it takes long hours to evaporate the crystallization water of the water glass-based aqueous solution applied to the plug surface, a problem of the reduction in the efficiency of piercing-rolling arises.
  • Patent Literature 2 discloses a technique for performing piecing-rolling, in which a scale-dissolving substance such as a boric acid-based oxide typified by B 2 O 3 is adopted as the lubricant, and the scale-dissolving substance is applied to the scale film of the plug surface.
  • a scale-dissolving substance such as a boric acid-based oxide typified by B 2 O 3 is adopted as the lubricant, and the scale-dissolving substance is applied to the scale film of the plug surface.
  • Patent Literature 2 has its object to prevent the occurrence of flaws on the inner surface of steel tube/pipe rather than to improve the life of plug, and the boric acid-based oxide is merely selected as the lubricant to be applied to the scale film without paying attention to the specific composition and application conditions of the lubricant at all. Therefore, in the technique disclosed in Patent Literature 2, there is room for improvement in terms of reliably realizing the increase of the life of plug without reducing the efficiency of piercing-rolling.
  • Patent Literature 3 disclose a technique, in which as the protection film to be formed on the surface of the plug base metal, a film made up of oxides and Fe is formed by arc spraying iron wire material on the surface of the plug base metal, in place of a scale film by heat treatment, and this plug with an arc-sprayed film is used to perform piercing-rolling. Moreover, the same literature describes that lubricant such as boric acid (H 3 BO 3 ) may be applied and laminated onto the arc-sprayed film formed on the plug surface.
  • lubricant such as boric acid (H 3 BO 3 ) may be applied and laminated onto the arc-sprayed film formed on the plug surface.
  • the protection film on the plug surface is made up of oxides and Fe, the plug with an arc-sprayed film is excellent in thermal insulation performance and seizing-resistance performance, and thus enables the increase of the life of plug, the effect of which is expected to be further enhanced by the application of the lubricant.
  • the boric acid etc. is merely selected as the lubricant to be applied to the arc-sprayed film without paying attention to the specific composition and application conditions of the lubricant at all. Therefore, in the technique disclosed in Patent Literature 3, there is also room for improvement in terms of reliably realizing the increase of the life of plug without reducing the efficiency of piercing-rolling.
  • Patent Literature 4 discloses a lubricant capable of prolonging the life of a plug for piercing rolling a seamless steel pipe.
  • the lubricant is composed of 1-10% of a granular layered substance, 1-10% of a water-dispersible or water-soluble polymer, 0-15% of an inorganic binder and the rest of water.
  • the present invention has been made in view of the above described circumstances, and has its object to provide, focusing on piercing-rolling, a method for producing a seamless steel tube/pipe, which has the following features of:
  • the method for producing a seamless steel tube/pipe of the present invention has the following remarkable effects:
  • the present inventors have conducted diligent studies on the assumption that a plug, in which a protection film is formed on the surface of the base metal of a plug for piercing-rolling, and a lubricant is applied and laminated onto the protection film, is used for piercing-rolling. Then, as shown by examples described later, they have conducted tests in which piercing-rolling is performed by using plugs, in which kinds of lubricants, chemical compositions, and application conditions, as well as kinds of protection films are variously changed, to evaluate the efficiency of piercing-rolling and the life of plug, consequently obtaining the following findings.
  • the plug to be used for piercing-rolling in the present invention is one in which a protection film is formed on the surface of its base metal, and a boric acid-based aqueous solution (lubricant) having a chemical composition described below is applied and laminated onto the protection film.
  • the protection film is an arc-sprayed film which is formed by arc-spraying of iron wire material and is made up of oxides and Fe. That is because applying a boric acid-based aqueous solution having an appropriate chemical composition described below as the lubricant will be effective for either of protection films to thereby significantly improve the piercing efficiency and also increase the life of plug in a stable manner.
  • the life of plug will dramatically increase compared with the case of the scale film. This is because, during piercing-rolling, the arc-sprayed film is more reactive with boric acid-based binders contained in the boric acid-based aqueous solution compared with the scale film, and thereby provides remarkable effects of smoothening the plug surface. On account of that, it is preferable to adopt an arc-sprayed film as the protection film.
  • the lubricant which is adopted in the present invention is one of a boric acid-based aqueous solution, in which oxide-based layered substances such as mica and talc are dispersed along with boric acid-based binders in a solvent (water).
  • This lubricant can contain a dispersant such as water soluble polymer to stably disperse the oxide-based layered substance and the boric acid-based binders.
  • % in the content of component means “mass%” in the following description.
  • the boric acid-based binder causes the oxide-based layered substance in the lubricant to adhere to the surface to be lubricated (the protection film on the plug surface) during application, and further the binder itself melts thereby not only smoothly delivering the oxide-based layered substance to the surface to be lubricated where wear occurs, but also reacting with the protection film to smoothen the plug surface and reduce friction resistance.
  • boric acid-based binder one or more of boron oxide, boric acid, and amine borate can be selected.
  • the total content of these boric acid-based binders is more than 30% in the lubricant, it becomes excessive, i.e. the amount of the binder itself is more than enough so that the binder tends to condense, making the application of the lubricant difficult.
  • the content thereof is less than 5%, the amount of melt of the binder itself is insufficient during piercing-rolling, which leads to insufficient supply of the oxide-based layered substance to the surface to be lubricated.
  • the total content of the boric acid-based binders is within a range of 5 to 30% in the lubricant. A more preferable range is 5 to 25%.
  • the content of the oxide-based layered substance will not be particularly limited. However, since containing an excessive amount of oxide-based layered substance will cause agglomeration thereof, application of the lubricant becomes difficult. On the other hand, since containing an extremely smaller amount thereof will cause an insufficient supply of the oxide-based layered substance to the surface to be lubricated during piercing-rolling, a satisfactory effect of reducing the friction resistance will not be achieved. On that account, the content of the oxide-based layered substance is within a range of 10 to 40%, when the boric acid-based binders are contained within the above described range.
  • the content of the dispersant will not be particularly limited as well. However, containing an excessive amount of the dispersant will only increase cost, and an extremely smaller amount thereof will not lead to any effect. On that account, when dispersant is to be contained, its content is preferably within a range of 0.11 to 3.0%.
  • the method for applying a lubricant having such a chemical composition to the protection film on the plug surface will not be particularly limited.
  • the lubricant may be directly applied with a brush etc.
  • desired methods include a spraying method whereby a lubricant is sprayed in a mist state by using a nozzle. That is because such method achieves a high operation efficiency and enables uniform application.
  • a lubricant made up of a boric acid-based aqueous solution having the chemical composition described above is performed when the surface temperature of the front edge of plug decreases to 100°C or less. Because doing so will make it possible to further increase the life of plug.
  • the surface temperature of the front edge of plug is more than 100°C when the lubricant of the boric acid-based aqueous solution is applied, since the moisture in the lubricant evaporates to form bubbles, the adhesiveness of the lubricant (oxide-based layered substance and boric acid-based binders) to the protection film will be impaired. As a result, as heat enters from the billet to the plug during piercing-rolling, the temperature of the plug increases, and melting-incurred metal loss of the front edge portion of the plug will occur.
  • the lower limit of the surface temperature of the front edge of plug at the time of application of lubricant will not be particularly limited, cooling the plug to less than 30°C will cause the cooling time to increase, reducing the efficiency of piercing-rolling, and therefore is economically disadvantageous.
  • the surface temperature of the front edge of plug at the time of application of lubricant is preferably 30°C or more.
  • Such a method of cooling the plug after piercing-rolling will not be limited.
  • the plug may be cooled by, for example, immersing the plug after piercing-rolling in a water bath, or pouring water on the plug after piercing-rolling.
  • the method for producing a seamless steel tube/pipe of the present invention it is possible to stably increase the life of plug during piercing-rolling without reducing the efficiency of piercing-rolling, and thereby improve the efficiency as the entire production process of a seamless steel tube/pipe.
  • Example 1 The test conditions of Example 1 were as follows.
  • a plurality of plugs were prepared in which a scale film was formed over the entire region of the surface of the base metal by heat treatment.
  • various boric acid-based aqueous solutions in which types of boric acid-based binders (boron oxide, boric acid and amine borate) and the content thereof were changed, were made as the lubricant, and each of these lubricants was applied to the scale film on the plug surface, thereafter being dried and laminated.
  • those lubricants of the boric acid-based aqueous solutions were arranged to contain 10 to 40% of mica as the oxide-based layered substance, and a total of 0.11 to 3.0% of one or more of water soluble polymer as the dispersant, besides boric acid-based binders.
  • the piercing efficiency during piercing-rolling was investigated, and the appearance of the plug was observed after piercing-rolling to investigate the surface quality and make evaluations by putting those investigation results together.
  • the target of piercing efficiency was not less than 70%, and a result of not less than 75%, which exceeded the target, was judged to be good.
  • the investigation results and evaluation results are shown together in Table 1 given above.
  • Test Nos. 1, 2, 4 to 9 satisfied the conditions specified in the present invention.
  • the piercing efficiency was more than 75% in any of Test Nos. 1, 2, 4 to 9.
  • Test Nos. 1, 2, 4 to 8 among them neither seizing on the plug surface nor peeling off of film occurred, and the surface quality was good.
  • Test No. 9 observed is a slight seizing the level of which does not impose any hindrance in operation, which attributes to the fact that the content of boric acid-based binders in the lubricant applied to the scale film was 30%, that is, the upper limit in the amount specified in the present invention.
  • Example 2 The test conditions of Example 2 were as follows.
  • a plurality of plugs were prepared in which a scale film was formed over the entire region of the surface of the base metal by heat treatment.
  • a plurality of plugs in each of which an arc-sprayed film made up of oxides and Fe was formed by the arc spraying of iron wire material over the entire region of the surface of the base metal were prepared.
  • a boric acid-based aqueous solution which contained an oxide-based layered substance and a dispersant as with the lubricants used in Example 1, and which contained 15% of boric acid-based binder of amine borate was prepared as the lubricant, and this lubricant was applied to the protection film (scale film, arc-sprayed film) on the surface of each plug, thereafter being dried and laminated.
  • the appearance of each plug was inspected each time piercing-rolling was completed, to investigate the life of plug.
  • the life of plug was determined as the number of passes at the time when the film peeled off and the plug became unusable, or melting-incurred metal loss or deformation occurred in the front edge portion of plug, that is, the number of billets which were successfully piercing-rolled in succession (the number of times of successive piercing-rolling).
  • the evaluation of the life of plug was conducted with respect to a criterion, that is, the life of plug when the surface temperature of the front edge of plug at the time of application of lubricant was more than 100°C.
  • the investigation results and evaluation results are shown together in Table 2 given above.
  • Test Nos. 21 to 28 show cases where a scale film was adopted as the protection film
  • Test Nos. 31 to 38 show cases where an arc-sprayed film was adopted as the protection film.
  • the present invention can be effectively used for the production of seamless steel tube/pipes by the Mannesmann tube-making process, and is useful, most of all, when producing a seamless steel tube/pipe made of high alloy steel such as high Cr-containing steel containing not less than 9% of Cr, Ni-based alloy, and stainless steel.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Laminated Bodies (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Claims (1)

  1. Verfahren zur Herstellung eines/einer nahtlosen Metallrohrs/-röhre, bei dem Lochwalzen unter Verwendung eines Stopfens mit einem Schutzfilm auf einer Oberfläche desselben durchgeführt wird, wobei der Schutzfilm durch Lichtbogenspritzen eines Eisendrahtmaterials auf die Oberfläche des Basismetalls des Stopfens durchgeführt wird und Oxide und Fe aufweist, gekennzeichnet durch Umfassen von:
    Kühlen des Stopfens nach dem Lochwalzen;
    Aufbringen eines Schmiermittels auf den Schutzfilm des Stopfens wenn die Oberflächentemperatur der Vorderkante des Stopfens auf 100 °C oder weniger fällt, wobei das Schmiermittel aus einer wässrigen Lösung, die 10 bis 40 Massen-% einer oxidbasierten, geschichteten Substanz und einen Gesamtgehalt von 5 bis 30 Massen-% von einem oder mehreren aus Boroxid, Borsäure und Aminborat enthält, hergestellt ist; und
    Wiederverwenden des Stopfens beim Lochwalzen.
EP11850562.7A 2010-12-22 2011-12-20 Verfahren zur herstellung eines nahtlosen stahlrohres Active EP2656935B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010285670A JP5142232B2 (ja) 2010-12-22 2010-12-22 継目無鋼管の製造方法
PCT/JP2011/007092 WO2012086177A1 (ja) 2010-12-22 2011-12-20 継目無鋼管の製造方法

Publications (3)

Publication Number Publication Date
EP2656935A1 EP2656935A1 (de) 2013-10-30
EP2656935A4 EP2656935A4 (de) 2015-09-09
EP2656935B1 true EP2656935B1 (de) 2016-11-02

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EP11850562.7A Active EP2656935B1 (de) 2010-12-22 2011-12-20 Verfahren zur herstellung eines nahtlosen stahlrohres

Country Status (7)

Country Link
US (1) US20130269407A1 (de)
EP (1) EP2656935B1 (de)
JP (1) JP5142232B2 (de)
CN (1) CN103269809B (de)
BR (1) BR112013013743B8 (de)
MX (1) MX345492B (de)
WO (1) WO2012086177A1 (de)

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JP6042130B2 (ja) 2012-07-31 2016-12-14 シスメックス株式会社 検体移し替え装置、検体処理システムおよび検体移し替え方法
CN104817857B (zh) * 2015-05-07 2017-10-10 天津钢管集团股份有限公司 防止高Cr、高Ni合金钢在热轧过程中产生粘钢缺陷的涂料

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07122069B2 (ja) * 1989-06-09 1995-12-25 住友金属工業株式会社 熱間潤滑剤
CN1014426B (zh) * 1990-08-16 1991-10-23 本溪市玻璃研究所 不锈钢热穿孔用玻璃润滑剂
JPH08117819A (ja) * 1994-10-31 1996-05-14 Kawasaki Steel Corp 継目無管の傾斜圧延方法
JPH10130687A (ja) * 1996-10-30 1998-05-19 Kawasaki Steel Corp 熱間加工用潤滑剤組成物
JP4000738B2 (ja) * 2000-02-21 2007-10-31 住友金属工業株式会社 継目無鋼管の穿孔圧延方法
EP1666576B1 (de) * 2003-09-04 2014-07-23 Nippon Steel & Sumitomo Metal Corporation Schmiermittelzusammensetzung zur bearbeitung von nahtlosen stahlrohren
JP4305673B2 (ja) * 2004-06-18 2009-07-29 住友金属工業株式会社 継目無鋼管の製造方法
CN1322101C (zh) * 2004-08-26 2007-06-20 徐志国 玻璃润滑剂
RU2446024C2 (ru) * 2007-11-01 2012-03-27 Сумитомо Метал Индастриз, Лтд. Прошивная и прокатная оправка, способ восстановления этой прошивной и прокатной оправки и технологическая линия для восстановления этой прошивной и прокатной оправки
CN101270317B (zh) * 2008-04-17 2011-06-08 启东尤希路化学工业有限公司 高润滑性环境友好型水基芯棒润滑剂
JP5169982B2 (ja) * 2009-03-03 2013-03-27 新日鐵住金株式会社 プラグ、穿孔圧延機、およびそれを用いた継目無管の製造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2656935A1 (de) 2013-10-30
MX345492B (es) 2017-02-02
CN103269809B (zh) 2015-05-13
WO2012086177A1 (ja) 2012-06-28
BR112013013743B8 (pt) 2020-11-17
JP2012130945A (ja) 2012-07-12
JP5142232B2 (ja) 2013-02-13
BR112013013743B1 (pt) 2020-07-28
EP2656935A4 (de) 2015-09-09
MX2013006659A (es) 2013-07-29
CN103269809A (zh) 2013-08-28
US20130269407A1 (en) 2013-10-17
BR112013013743A2 (pt) 2016-09-13

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