EP2542361B1 - Verfahren zur herstellung eines warmwerkzeugs mit einer beschichtung - Google Patents

Verfahren zur herstellung eines warmwerkzeugs mit einer beschichtung Download PDF

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Publication number
EP2542361B1
EP2542361B1 EP11705158.1A EP11705158A EP2542361B1 EP 2542361 B1 EP2542361 B1 EP 2542361B1 EP 11705158 A EP11705158 A EP 11705158A EP 2542361 B1 EP2542361 B1 EP 2542361B1
Authority
EP
European Patent Office
Prior art keywords
coating
elevations
depressions
tool
tool body
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
EP11705158.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2542361A1 (de
Inventor
Kazim Serin
Hans Joachim Pehle
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 Meer GmbH
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 SMS Meer GmbH filed Critical SMS Meer GmbH
Priority to PL11705158T priority Critical patent/PL2542361T3/pl
Publication of EP2542361A1 publication Critical patent/EP2542361A1/de
Application granted granted Critical
Publication of EP2542361B1 publication Critical patent/EP2542361B1/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
    • 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
    • B21B17/02—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length
    • 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
    • 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
    • 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
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering

Definitions

  • a rolling rod which has a basic body possessing such a surface profiling with a coating subsequently applied separately thereon.
  • a piercer for punching round bars is from the DE 10 2008 056 988 A1 and continue, for example, from the JP 54-017363 A and the JP 63-192504 A known.
  • the working area of the perforated mandrel is here provided with a layer which reduces the heat dissipation during the perforation in the mandrel body and adheres firmly to the mandrel body. For the function of the tool, it is essential that this layer has a firm grip.
  • thermo-chemical coating process roughen the work area by blasting, for example, to improve the adhesion of the subsequently applied coating.
  • the invention is therefore based on the object to provide a method for producing a hot tool of the type mentioned, with which it is ensured that an improved bond between the body of the tool and the coating is present. Accordingly, the hot tool should have a longer service life and the production of seamless pipes in particular thus become more economical.
  • thermo-chemical conversion in particular the production of an iron oxide, particularly preferably of scale, comprises, and in that on the thus-converted primary material layer, a filling between the elevations gaps of the wells filling outer protective layer is applied.
  • thermo-chemical treatment method can be produced after the above step a) and during the above step b).
  • the surface profiling preferably forms at least one undercut in an axial direction of the tool, the surface profiling in particular having a number of elevations and depressions on the surface of the tool main body.
  • the tool body is preferably made of steel.
  • the coating may be a protective against thermal and mechanical stress layer. It can be applied by a thermo-chemical coating process.
  • the application of the coating according to the above step b) can also be done for example by flame spraying or plasma spraying.
  • an improvement of the bond between the tool base body and coating is achieved in that the surface of the metallic support material smoothly processed and then with a defined structure - consisting of webs and these spaced-apart gaps, preferably made by mechanical processing, in particular by turning - formed becomes.
  • a part of this carrier material is converted into a protective layer by a targeted thermo-chemical coating process along the thus structured surface contour of the carrier material.
  • an additional outer protective layer is applied by the thermo-chemical process, which simultaneously fills or closes the gaps or depressions remaining between the webs.
  • the structuring of the transition between the carrier material (base body) and the applied layer which has been optimized in advance, depending on the condition of use of the tool, significantly improves the adhesion of the achieved layer structure and prevents complete peeling of the layer.
  • the proposed procedure or the explained embodiment is generally suitable for tools and components that are protected by a coating should be able to better withstand thermal and mechanical stress.
  • a hot tool 1 is shown in the form of a piercer to produce a seamless tube.
  • the tool 1 has a tool base body 2, which has a working area 3, which extends over a certain length in the direction of an axis a.
  • the tool 1 is provided with a coating 4, which protects the tool 1 against thermal or mechanical stress.
  • the radially outer surface of the tool base 2 has a surface profiling 5, which consists of a number of radially projecting elevations 6, which are arranged between thus resulting recesses 7.
  • the elevations 6 extend in the axial direction a by an amount B, which is preferably in the range of about 250 microns to 4000 microns.
  • the height D of the elevations 6 with respect to the recesses 7 is in a range of about 500 microns to 5000 microns.
  • the distance A between two elevations 7 is preferably in a range of about 200 microns to 2,000 microns.
  • the profiling 5 is applied to the surface of the base body 2, that this is first processed smoothly and then incorporated by machining the ridge-shaped in the radial section or rectangular recesses 7, in particular screwed.
  • the surface of the tool base 2 is provided with a coating 4, as shown in FIG Fig. 3 is shown.
  • the total layer thickness C of the coating 4 fills out the depressions 7 and exceeds the height of the elevations 6.
  • Fig. 4 is a preferred embodiment or to see solution.
  • the pre-processing of the tool base 2 is analogous to Fig. 2 and Fig.3 made, ie it was first the surface profiling 5 in the smooth machined tool body 2 introduced.
  • the profile of the profiling corresponds to that according to Fig. 2 ,
  • thermo-chemical treatment process a part of the material of the main body 2 is converted into a protective layer.
  • the converted material 8 is equidistant from the profiling 5 and is indicated by dashed lines. This reduces accordingly the width of the elevations (webs) 6 and the depth of the cross-section in turn rectangular gaps, as it Fig. 4 shows.
  • the coating 4 is applied as a second, outer layer during the conversion or subsequently Fig. 4 for the finished tool shows. This is again done by a thermo-chemical process or for example by flame spraying or plasma spraying.
  • the representations in the FIGS. 5 and 6 Examples of specific coatings can be found.
  • the inner, more porous layer 8 and the second outer layer 4 applied thereon by conversion of the webs (elevations) 6 and filling in of gaps (depressions) 7 can be clearly seen.
  • the inner layer 8 (converted material) consists in the present case of iron oxides and grows from the surface of the main body or the profiling.
  • the gaps between the lands (bumps) are filled by the outer coating 4 (up).
  • the carrier material (tool base) was coated with iron oxides or material of the main body was converted into iron oxide.
  • the carrier material is present steel.
  • the maximum thickness of the coating on the base body is in this example about 1,000 microns.
  • the structured transition between the carrier material and the coating can be optimized depending on the application, so that complete peeling of the layer during use can be prevented. As a result, in particular the service life of the tool 1 can be substantially increased.
  • the surfaces of the coated tools, before or during use by mechanical processing eg. B. grinding and polishing (before use) or rolling (during use), smoothed.
  • the smoothing of the surface reduces the friction between the tool and the workpiece (rolling stock).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
EP11705158.1A 2010-03-02 2011-02-11 Verfahren zur herstellung eines warmwerkzeugs mit einer beschichtung Active EP2542361B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11705158T PL2542361T3 (pl) 2010-03-02 2011-02-11 Sposób wytwarzania gorącego narzędzia z naniesioną powłoką

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102010009954 2010-03-02
DE102011010646A DE102011010646A1 (de) 2010-03-02 2011-02-09 Warmwerkzeug und Verfahren zu seiner Herstellung
PCT/EP2011/000643 WO2011107214A1 (de) 2010-03-02 2011-02-11 Warmwerkzeug mit einer beschichtung und verfahren zu seiner herstellung

Publications (2)

Publication Number Publication Date
EP2542361A1 EP2542361A1 (de) 2013-01-09
EP2542361B1 true EP2542361B1 (de) 2014-06-18

Family

ID=44237620

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11705158.1A Active EP2542361B1 (de) 2010-03-02 2011-02-11 Verfahren zur herstellung eines warmwerkzeugs mit einer beschichtung

Country Status (17)

Country Link
US (1) US20130327107A1 (es)
EP (1) EP2542361B1 (es)
JP (1) JP5591352B2 (es)
KR (1) KR101469516B1 (es)
CN (1) CN102781600B (es)
AR (1) AR080439A1 (es)
AU (1) AU2011223236A1 (es)
BR (1) BR112012021887B1 (es)
CA (1) CA2793074C (es)
DE (1) DE102011010646A1 (es)
ES (1) ES2481404T3 (es)
MX (1) MX2012009993A (es)
PL (1) PL2542361T3 (es)
RU (1) RU2508173C1 (es)
UA (1) UA104085C2 (es)
WO (1) WO2011107214A1 (es)
ZA (1) ZA201205816B (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014000461A1 (de) * 2014-01-14 2015-07-16 Hua Guo Innenwerkzeug für die Herstellung nahtloser Stahlrohre

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011109071A1 (de) * 2011-07-30 2013-01-31 Sms Meer Gmbh Rohrschmiedeverfahren mit urgeformten Hohlblock
DE102014016502A1 (de) * 2014-11-07 2016-05-12 Hua Guo Warmumformwerkzeug mit verstärkter Oxid-Schutzschicht
US20180023179A1 (en) * 2015-02-09 2018-01-25 Nippon Steel & Sumitomo Metal Corporation Method for Producing Plug
DE102015122975B3 (de) * 2015-12-30 2017-03-23 Wolfgang Dörr Verfahren zur Herstellung eines Warmumformwerkzeuges
RU2717422C1 (ru) * 2019-04-08 2020-03-23 Публичное акционерное общество "Трубная металлургическая компания" (ПАО "ТМК") Охлаждаемая оправка прошивного стана

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1963320A (en) * 1932-02-23 1934-06-19 Nat Tube Co Piercing point
JPS5819363B2 (ja) * 1977-07-09 1983-04-18 新日本製鐵株式会社 継目無鋼管穿孔機又は圧延機用の芯金
CH668377A5 (de) * 1985-12-06 1988-12-30 Walter Brauchli Zwingenartiges spannwerkzeug.
JP2521940B2 (ja) * 1987-02-05 1996-08-07 日本鋼管株式会社 継目無鋼管製造用プラグ
SU1675004A1 (ru) * 1988-11-14 1991-09-07 Всесоюзный научно-исследовательский и конструкторско-технологический институт трубной промышленности Оправка дл винтовой прокатки
JPH02224806A (ja) * 1989-02-28 1990-09-06 Nkk Corp 継目無し鋼管製造用プラグ
DE10316910B3 (de) * 2003-04-12 2004-09-02 Sms Meer Gmbh Verfahren zur Herstellung von Rohren aus metallischem Werkstoff
DE102005044777A1 (de) * 2005-09-20 2007-03-29 Sms Meer Gmbh Verfahren und Walzwerk zur Herstellung eines nahtlosen Rohres
DE102008056988A1 (de) 2007-12-07 2009-06-10 Sms Meer Gmbh Verfahren und Walzwerk zum Herstellen von nahtlosen Stahlrohren

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014000461A1 (de) * 2014-01-14 2015-07-16 Hua Guo Innenwerkzeug für die Herstellung nahtloser Stahlrohre
DE102014000461B4 (de) * 2014-01-14 2017-01-05 Hua Guo Innenwerkzeug für die Herstellung nahtloser Stahlrohre

Also Published As

Publication number Publication date
CA2793074A1 (en) 2011-09-09
KR101469516B1 (ko) 2014-12-09
US20130327107A1 (en) 2013-12-12
BR112012021887B1 (pt) 2021-06-22
ES2481404T3 (es) 2014-07-30
AR080439A1 (es) 2012-04-11
EP2542361A1 (de) 2013-01-09
CA2793074C (en) 2015-06-02
UA104085C2 (ru) 2013-12-25
JP5591352B2 (ja) 2014-09-17
DE102011010646A1 (de) 2011-09-08
KR20120112840A (ko) 2012-10-11
PL2542361T3 (pl) 2014-12-31
BR112012021887A2 (pt) 2020-09-01
RU2508173C1 (ru) 2014-02-27
ZA201205816B (en) 2013-03-27
CN102781600A (zh) 2012-11-14
MX2012009993A (es) 2012-11-23
WO2011107214A1 (de) 2011-09-09
AU2011223236A1 (en) 2012-10-25
JP2013521128A (ja) 2013-06-10
CN102781600B (zh) 2016-04-06

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