US20130327107A1 - Hot work tool and method for producing same - Google Patents
Hot work tool and method for producing same Download PDFInfo
- Publication number
- US20130327107A1 US20130327107A1 US13/576,875 US201113576875A US2013327107A1 US 20130327107 A1 US20130327107 A1 US 20130327107A1 US 201113576875 A US201113576875 A US 201113576875A US 2013327107 A1 US2013327107 A1 US 2013327107A1
- Authority
- US
- United States
- Prior art keywords
- coating
- tool
- machine
- base body
- mandrel
- 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.)
- Abandoned
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 238000000576 coating method Methods 0.000 claims abstract description 47
- 239000011248 coating agent Substances 0.000 claims abstract description 42
- 238000005242 forging Methods 0.000 claims abstract description 8
- 238000005096 rolling process Methods 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims abstract description 4
- 238000003754 machining Methods 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 15
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000010285 flame spraying Methods 0.000 claims description 3
- 238000007750 plasma spraying Methods 0.000 claims description 3
- 238000005755 formation reaction Methods 0.000 claims 2
- 239000000463 material Substances 0.000 description 21
- 239000010410 layer Substances 0.000 description 19
- 239000011241 protective layer Substances 0.000 description 6
- 235000013980 iron oxide Nutrition 0.000 description 4
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
Images
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
- the invention relates to a hot-machining tool, particularly a piercing mandrel or a rolling bar for making seamless pipes, or a forging mandrel for hot forging tubular workpieces of metal, which machine tool has a base body, the machine-tool base body having a coating at least in a machining region. Furthermore, the invention relates to a method of making such a hot-machining tool.
- a mandrel of this type for piercing round rods is known from DE 10 2008 056 988.
- the machining region of the piercing mandrel is provided with a coating that reduces heat dissipation into the mandrel body during piercing and that firmly adheres to the mandrel body.
- this layer be solidly anchored.
- thermochemical coating method in order to improve the adhesion of the coating to be subsequently applied.
- the object of invention is therefore to create a hot-machining tool of the above-described type, as well as a method of making it that ensures an improved bond between the base body of the machine tool and the coating. Accordingly, the hot-machining tool should have a longer service life, and making seamless pipes in particular is supposed to be more economically efficient.
- the machine-tool base body has a surface profiling, and that the coating is applied to the surface profiling.
- the surface profiling preferably forms at least one inset anchor formation extending axially of the machine tool, the surface profiling particularly being formed by a plurality of ridges and grooves on the surface of the machine-tool base body.
- the machine-tool base body preferably consists of steel.
- the coating can be a layer that protects against thermal and mechanical stresses. It can be applied by a thermochemical coating method.
- the method of making such a hot-machining tool has the following steps, according to the invention:
- a plurality of ridges and grooves are preferably formed on the surface of the machine-tool base body that was previously machined smooth.
- the ridges are particularly configured as projections that are ridges, preferably rectangular in radial cross-section, extending over a predetermined length along a longitudinal axis of the machine tool, and are raised above the grooves by a predetermined height.
- the grooves are preferably filled up with the coating, at least to the height of the ridges, during application of the coating according to step b), wherein preferably, the depth of the coating actually exceeds the height of the ridges.
- thermochemical conversion that in particular comprises making an iron oxide, particularly preferably of scale.
- step b) Application of the coating according to step b) can also take place, for example, by flame spraying or plasma spraying.
- an improvement in the bond between machine-tool base body and coating is achieved in that the surface of the metallic support material is machined smooth and then configured with a defined structure consisting of ridges and gaps spaced apart by the ridges and preferably produced by mechanical machining, particularly by lathing.
- a part of the support material can be converted to a protective layer, by a targeted thermochemical coating method of the surface of this support material.
- Adhesion of the layer structure that has been formed is clearly improved by the structuring of the transition between the support material (base body) and the applied layer, which has previously been optimized, adapted in advance, in accordance with the conditions of use of the machine tool, and complete peeling off of the layer is prevented.
- the gripping behavior between the rolled material and the machine tool is also improved.
- the proposed method of procedure or the configuration as described is suitable, in general, for machine tools and components that are supposed to be protected by means of a coating, in order to be better able to withstand thermal and mechanical stress.
- FIG. 1 is a side view of a hot-machining tool in the form of a piercing mandrel
- FIG. 2 is a view of the detail shown at “Z” in FIG. 1 of the machine-tool base body before being coated;
- FIG. 3 shows the detail Z according to FIG. 1 of the machine-tool base body after being coated
- FIG. 4 shows the detail Z according to FIG. 1 of an alternative embodiment of the coated machine-tool base body
- FIG. 5 is a first microsection of the detail Z of the hot-machining tool according to FIG. 1 ;
- FIG. 6 is a second microsection of the detail Z of the hot work according to FIGS. 1 .
- FIG. 1 a hot-machining tool 1 in the form of a piercing mandrel for making seamless pipe is shown.
- the machine tool 1 has a base body 2 that has a machining region 3 that extends through a predetermined length along an axis a. In the machining region 3 , the machine tool 1 is provided with a coating 4 that protects the machine tool 1 from thermal and mechanical stress.
- FIGS. 2 and 3 The precise structure of the machine tool, as a detail in the region Z according to FIG. 1 , i.e. as a detail of the machine-tool base body 2 , is shown in FIGS. 2 and 3 .
- the radially outer surface of the machine-tool base body 2 has a surface profiling 5 consisting of a plurality of radially projecting ridges 6 that are disposed between grooves 7 that they form.
- the ridges 6 have an axial dimension B parallel to the axis a, which preferably lies in the range of approximately 250 ⁇ m to 4000 ⁇ m.
- a radial height D of the ridges 6 as compared with the grooves 7 lies in a range of approximately 500 ⁇ m to 5000 ⁇ m.
- a spacing A between two ridges 6 preferably lies in a range of approximately 200 ⁇ m to 2000 ⁇ m.
- the profiling 5 is applied to the surface of the base body 2 after it is machined smooth, and subsequently the recesses 7 , which are block-shaped or rectangular in radial section, are machined in, particularly lathed in.
- the surface of the machine-tool base body 2 is provided with a coating 4 , as shown in FIG. 3 .
- the total layer thickness C of the coating 4 fills the grooves 7 and exceeds the radial height of the ridges 6 .
- the material of the coating 4 is inset as a result of the surface profiling 5 , so that the coating 4 adheres very firmly to the base body 2 during use of the machine tool 1 .
- FIG. 4 a preferred embodiment or solution can be seen.
- the prior machining of the machine-tool base body 2 is done as in the solution according to FIG. 2 and FIG. 3 , i.e. first the surface profiling 5 was machine into the smoothly machined base body 2 .
- the progression of the profiling corresponds to that according to FIG. 2 .
- part of the material of the base body 2 is converted to a protective layer, before application of the coating 4 , at first by a thermochemical treatment.
- the converted material 8 runs in a layer of uniform thickness over the profiling 5 and is indicated with broken-line hatching.
- the width of the ridges or elevated regions 6 decreases accordingly, as does the depth of the gaps, which again are rectangular in cross-section, as shown in FIG. 4 .
- the coating 4 is applied to the material layer 8 converted in this manner, i.e. to the primary or inner protective layer produced by conversion of the support material, during conversion or subsequently, as a second, outer layer, as FIG. 4 shows for the finished machine tool. This again takes place by a thermochemical method or, for example, by flame spraying or plasma spraying.
- a structure is therefore created between the support material (base body) 2 and the layer 4 , before or during application or production of the layer 4 on the support material 2 , which structure manifests itself in the converted material 8 .
- Examples of actual coatings can be derived from the representations in FIGS. 5 and 6 .
- the inner, more porous layer 8 produced by conversion on the elevated regions or ridges 6 and the filling of the gaps or grooves 7 and the second outer layer 4 applied to the converted layer.
- the inner layer of converted material consists, in the present example, of iron oxides, and grows from the surface of the base body or the profiling. The gaps between the elevated regions or ridges are filled by the outer coating 4 .
- the support material (tool base body) was coated with iron oxides, or the material of the base body was converted to iron oxides.
- the support material in the present case is steel.
- the maximum thickness of the coating on the base body amounts to approximately 1000 ⁇ m in this example.
- the structured transition between the support material and the coating can be structured in optimized manner, depending on use, so that complete peeling of the layer during use can be prevented. As a result, the lifetime of the machine tool 1 , in particular, can be significantly increased.
- the surfaces of the coated tools can be smoothed before or during use, by means of mechanical machining such as grinding and polishing (before use) or rolling (during use).
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)
Abstract
Description
- The invention relates to a hot-machining tool, particularly a piercing mandrel or a rolling bar for making seamless pipes, or a forging mandrel for hot forging tubular workpieces of metal, which machine tool has a base body, the machine-tool base body having a coating at least in a machining region. Furthermore, the invention relates to a method of making such a hot-machining tool.
- A mandrel of this type for piercing round rods is known from DE 10 2008 056 988. Here, the machining region of the piercing mandrel is provided with a coating that reduces heat dissipation into the mandrel body during piercing and that firmly adheres to the mandrel body. For the function of the machine tool, it is essential that this layer be solidly anchored.
- Furthermore, it is generally known in hot-machining tools or similar components, in order to increase the service life, to roughen the machining region, for example, before coating—in most cases, a thermochemical coating method—in order to improve the adhesion of the coating to be subsequently applied.
- However, it has been shown that the rough surface often does not guarantee sufficient adhesion, and in many cases is lost during the coating process or during use. If thermal or mechanical stresses then act in the contact region between the base body and the coating, the protective layer peels off.
- The object of invention is therefore to create a hot-machining tool of the above-described type, as well as a method of making it that ensures an improved bond between the base body of the machine tool and the coating. Accordingly, the hot-machining tool should have a longer service life, and making seamless pipes in particular is supposed to be more economically efficient.
- This object is attained by the invention in that the machine-tool base body has a surface profiling, and that the coating is applied to the surface profiling.
- The surface profiling preferably forms at least one inset anchor formation extending axially of the machine tool, the surface profiling particularly being formed by a plurality of ridges and grooves on the surface of the machine-tool base body.
- The machine-tool base body preferably consists of steel.
- The coating can be a layer that protects against thermal and mechanical stresses. It can be applied by a thermochemical coating method.
- The method of making such a hot-machining tool has the following steps, according to the invention:
- a) providing a machine-tool base body with a surface profiling preferably by mechanical machining, particularly by lathing;
- b) applying a coating to the machine-tool base body.
- In making the surface profiling, a plurality of ridges and grooves are preferably formed on the surface of the machine-tool base body that was previously machined smooth. In this connection, the ridges are particularly configured as projections that are ridges, preferably rectangular in radial cross-section, extending over a predetermined length along a longitudinal axis of the machine tool, and are raised above the grooves by a predetermined height. The grooves are preferably filled up with the coating, at least to the height of the ridges, during application of the coating according to step b), wherein preferably, the depth of the coating actually exceeds the height of the ridges.
- After step a) and during step b), a part of the machine-tool base body can be subjected to thermochemical conversion that in particular comprises making an iron oxide, particularly preferably of scale.
- Application of the coating according to step b) can also take place, for example, by flame spraying or plasma spraying.
- Accordingly, an improvement in the bond between machine-tool base body and coating is achieved in that the surface of the metallic support material is machined smooth and then configured with a defined structure consisting of ridges and gaps spaced apart by the ridges and preferably produced by mechanical machining, particularly by lathing.
- Subsequently, a part of the support material can be converted to a protective layer, by a targeted thermochemical coating method of the surface of this support material.
- In this connection, the width as well as the height of the ridges and the depth of the gaps change accordingly. An additional outer protective layer is applied to this primary protective layer by the thermochemical method, and this layer simultaneously fills or closes the gaps or grooves that remain between the ridges.
- Adhesion of the layer structure that has been formed is clearly improved by the structuring of the transition between the support material (base body) and the applied layer, which has previously been optimized, adapted in advance, in accordance with the conditions of use of the machine tool, and complete peeling off of the layer is prevented.
- Aside from the improved transition between the rolled material and the oxide layer, the gripping behavior between the rolled material and the machine tool is also improved.
- The proposed method of procedure or the configuration as described is suitable, in general, for machine tools and components that are supposed to be protected by means of a coating, in order to be better able to withstand thermal and mechanical stress.
- Embodiments of the invention are shown schematically in the drawing. Therein:
-
FIG. 1 is a side view of a hot-machining tool in the form of a piercing mandrel; -
FIG. 2 is a view of the detail shown at “Z” inFIG. 1 of the machine-tool base body before being coated; -
FIG. 3 shows the detail Z according toFIG. 1 of the machine-tool base body after being coated; -
FIG. 4 shows the detail Z according toFIG. 1 of an alternative embodiment of the coated machine-tool base body; -
FIG. 5 is a first microsection of the detail Z of the hot-machining tool according toFIG. 1 ; -
FIG. 6 is a second microsection of the detail Z of the hot work according toFIGS. 1 . - In
FIG. 1 , a hot-machining tool 1 in the form of a piercing mandrel for making seamless pipe is shown. Themachine tool 1 has abase body 2 that has amachining region 3 that extends through a predetermined length along an axis a. In themachining region 3, themachine tool 1 is provided with acoating 4 that protects themachine tool 1 from thermal and mechanical stress. - The precise structure of the machine tool, as a detail in the region Z according to
FIG. 1 , i.e. as a detail of the machine-tool base body 2, is shown inFIGS. 2 and 3 . As can be seen, the radially outer surface of the machine-tool base body 2 has asurface profiling 5 consisting of a plurality of radially projectingridges 6 that are disposed betweengrooves 7 that they form. Theridges 6 have an axial dimension B parallel to the axis a, which preferably lies in the range of approximately 250 μm to 4000 μm. A radial height D of theridges 6 as compared with thegrooves 7 lies in a range of approximately 500 μm to 5000 μm. A spacing A between tworidges 6 preferably lies in a range of approximately 200 μm to 2000 μm. - In this connection, the
profiling 5 is applied to the surface of thebase body 2 after it is machined smooth, and subsequently therecesses 7, which are block-shaped or rectangular in radial section, are machined in, particularly lathed in. - After this prior machining, the surface of the machine-
tool base body 2 is provided with acoating 4, as shown inFIG. 3 . In this connection, the total layer thickness C of thecoating 4 fills thegrooves 7 and exceeds the radial height of theridges 6. - Seen parallel to the axis a, the material of the
coating 4 is inset as a result of the surface profiling 5, so that thecoating 4 adheres very firmly to thebase body 2 during use of themachine tool 1. - In
FIG. 4 , a preferred embodiment or solution can be seen. The prior machining of the machine-tool base body 2 is done as in the solution according toFIG. 2 andFIG. 3 , i.e. first thesurface profiling 5 was machine into the smoothly machinedbase body 2. The progression of the profiling corresponds to that according toFIG. 2 . - Then, however, part of the material of the
base body 2 is converted to a protective layer, before application of thecoating 4, at first by a thermochemical treatment. Theconverted material 8 runs in a layer of uniform thickness over theprofiling 5 and is indicated with broken-line hatching. In this connection, the width of the ridges orelevated regions 6 decreases accordingly, as does the depth of the gaps, which again are rectangular in cross-section, as shown inFIG. 4 . - The
coating 4 is applied to thematerial layer 8 converted in this manner, i.e. to the primary or inner protective layer produced by conversion of the support material, during conversion or subsequently, as a second, outer layer, asFIG. 4 shows for the finished machine tool. This again takes place by a thermochemical method or, for example, by flame spraying or plasma spraying. - According to the solution shown in
FIG. 4 , a structure is therefore created between the support material (base body) 2 and thelayer 4, before or during application or production of thelayer 4 on thesupport material 2, which structure manifests itself in theconverted material 8. - Examples of actual coatings can be derived from the representations in
FIGS. 5 and 6 . The inner, moreporous layer 8 produced by conversion on the elevated regions orridges 6 and the filling of the gaps orgrooves 7 and the secondouter layer 4 applied to the converted layer. The inner layer of converted material consists, in the present example, of iron oxides, and grows from the surface of the base body or the profiling. The gaps between the elevated regions or ridges are filled by theouter coating 4. - In the embodiment according to
FIG. 5 andFIG. 6 the support material (tool base body) was coated with iron oxides, or the material of the base body was converted to iron oxides. The support material in the present case is steel. The maximum thickness of the coating on the base body amounts to approximately 1000 μm in this example. - The structured transition between the support material and the coating can be structured in optimized manner, depending on use, so that complete peeling of the layer during use can be prevented. As a result, the lifetime of the
machine tool 1, in particular, can be significantly increased. - The surfaces of the coated tools can be smoothed before or during use, by means of mechanical machining such as grinding and polishing (before use) or rolling (during use).
- Smoothing of the surface reduces the friction between the machine tool and the work piece (rolled material).
- 1 hot-machining tool
- 2 machine-tool base body
- 3 machining region
- 4 coating
- 5 surface profiling
- 6 ridge
- 7 groove
- 8 converted material
- a axis direction
- B length
- D height
- A distance
- C total layer thickness
Claims (15)
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010009954 | 2010-03-02 | ||
DE102010009954.6 | 2010-03-02 | ||
DE102011010646A DE102011010646A1 (en) | 2010-03-02 | 2011-02-09 | Hot tool and method for its production |
DE102011010646.4 | 2011-02-09 | ||
PCT/EP2011/000643 WO2011107214A1 (en) | 2010-03-02 | 2011-02-11 | Hot work tool and method for producing same |
Publications (1)
Publication Number | Publication Date |
---|---|
US20130327107A1 true US20130327107A1 (en) | 2013-12-12 |
Family
ID=44237620
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/576,875 Abandoned US20130327107A1 (en) | 2010-03-02 | 2011-02-11 | Hot work tool and method for producing same |
Country Status (17)
Country | Link |
---|---|
US (1) | US20130327107A1 (en) |
EP (1) | EP2542361B1 (en) |
JP (1) | JP5591352B2 (en) |
KR (1) | KR101469516B1 (en) |
CN (1) | CN102781600B (en) |
AR (1) | AR080439A1 (en) |
AU (1) | AU2011223236A1 (en) |
BR (1) | BR112012021887B1 (en) |
CA (1) | CA2793074C (en) |
DE (1) | DE102011010646A1 (en) |
ES (1) | ES2481404T3 (en) |
MX (1) | MX2012009993A (en) |
PL (1) | PL2542361T3 (en) |
RU (1) | RU2508173C1 (en) |
UA (1) | UA104085C2 (en) |
WO (1) | WO2011107214A1 (en) |
ZA (1) | ZA201205816B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170333964A1 (en) * | 2014-11-07 | 2017-11-23 | Hua Guo | Hot forming tool |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011109071A1 (en) * | 2011-07-30 | 2013-01-31 | Sms Meer Gmbh | Pipe Forging Process with Urformed Hollow Block |
DE102014000461B4 (en) * | 2014-01-14 | 2017-01-05 | Hua Guo | Inner tool for the production of seamless steel tubes |
JP6380562B2 (en) * | 2015-02-09 | 2018-08-29 | 新日鐵住金株式会社 | Manufacturing method of plug |
DE102015122975B3 (en) * | 2015-12-30 | 2017-03-23 | Wolfgang Dörr | Method for producing a hot forming tool |
RU2717422C1 (en) * | 2019-04-08 | 2020-03-23 | Публичное акционерное общество "Трубная металлургическая компания" (ПАО "ТМК") | Cooled piercing mandrel |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1963320A (en) * | 1932-02-23 | 1934-06-19 | Nat Tube Co | Piercing point |
JPS5819363B2 (en) * | 1977-07-09 | 1983-04-18 | 新日本製鐵株式会社 | Core metal for seamless steel pipe drilling machines or rolling mills |
CH668377A5 (en) * | 1985-12-06 | 1988-12-30 | Walter Brauchli | COMPULSORY CLAMPING TOOL. |
JP2521940B2 (en) * | 1987-02-05 | 1996-08-07 | 日本鋼管株式会社 | Seamless steel pipe manufacturing plug |
SU1675004A1 (en) * | 1988-11-14 | 1991-09-07 | Всесоюзный научно-исследовательский и конструкторско-технологический институт трубной промышленности | Arbor for screw rolling |
JPH02224806A (en) * | 1989-02-28 | 1990-09-06 | Nkk Corp | Plug for producing seamless steel pipe |
DE10316910B3 (en) * | 2003-04-12 | 2004-09-02 | Sms Meer Gmbh | Production of metallic pipes comprises rolling the start of the pipe loop and/or the end of the pipe loop together using an inner tool |
DE102005044777A1 (en) * | 2005-09-20 | 2007-03-29 | Sms Meer Gmbh | Method and rolling mill for producing a seamless pipe |
DE102008056988A1 (en) | 2007-12-07 | 2009-06-10 | Sms Meer Gmbh | Seamless steel pipe producing method for rolling mill, involves providing inner tool in interior of pipe blank, where rotation movement opposite to rotary movement of pipe blank is imposed to piercer |
-
2011
- 2011-02-09 DE DE102011010646A patent/DE102011010646A1/en not_active Withdrawn
- 2011-02-11 EP EP11705158.1A patent/EP2542361B1/en active Active
- 2011-02-11 WO PCT/EP2011/000643 patent/WO2011107214A1/en active Application Filing
- 2011-02-11 UA UAA201211361A patent/UA104085C2/en unknown
- 2011-02-11 KR KR1020127022572A patent/KR101469516B1/en active IP Right Grant
- 2011-02-11 PL PL11705158T patent/PL2542361T3/en unknown
- 2011-02-11 RU RU2012141882/02A patent/RU2508173C1/en active
- 2011-02-11 CA CA2793074A patent/CA2793074C/en active Active
- 2011-02-11 AU AU2011223236A patent/AU2011223236A1/en not_active Abandoned
- 2011-02-11 CN CN201180012062.9A patent/CN102781600B/en active Active
- 2011-02-11 MX MX2012009993A patent/MX2012009993A/en active IP Right Grant
- 2011-02-11 ES ES11705158.1T patent/ES2481404T3/en active Active
- 2011-02-11 BR BR112012021887-5A patent/BR112012021887B1/en active IP Right Grant
- 2011-02-11 JP JP2012555318A patent/JP5591352B2/en active Active
- 2011-02-11 US US13/576,875 patent/US20130327107A1/en not_active Abandoned
- 2011-03-01 AR ARP110100631A patent/AR080439A1/en not_active Application Discontinuation
-
2012
- 2012-08-02 ZA ZA2012/05816A patent/ZA201205816B/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170333964A1 (en) * | 2014-11-07 | 2017-11-23 | Hua Guo | Hot forming tool |
Also Published As
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ZA201205816B (en) | 2013-03-27 |
KR101469516B1 (en) | 2014-12-09 |
BR112012021887A2 (en) | 2020-09-01 |
BR112012021887B1 (en) | 2021-06-22 |
CN102781600A (en) | 2012-11-14 |
JP2013521128A (en) | 2013-06-10 |
RU2508173C1 (en) | 2014-02-27 |
UA104085C2 (en) | 2013-12-25 |
ES2481404T3 (en) | 2014-07-30 |
AR080439A1 (en) | 2012-04-11 |
EP2542361A1 (en) | 2013-01-09 |
CA2793074C (en) | 2015-06-02 |
JP5591352B2 (en) | 2014-09-17 |
AU2011223236A1 (en) | 2012-10-25 |
PL2542361T3 (en) | 2014-12-31 |
EP2542361B1 (en) | 2014-06-18 |
CA2793074A1 (en) | 2011-09-09 |
CN102781600B (en) | 2016-04-06 |
WO2011107214A1 (en) | 2011-09-09 |
MX2012009993A (en) | 2012-11-23 |
KR20120112840A (en) | 2012-10-11 |
DE102011010646A1 (en) | 2011-09-08 |
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