EP1155754A2 - Mandrel for skew rolling of metallic hollow bodies in skew rolling mills - Google Patents
Mandrel for skew rolling of metallic hollow bodies in skew rolling mills Download PDFInfo
- Publication number
- EP1155754A2 EP1155754A2 EP01102440A EP01102440A EP1155754A2 EP 1155754 A2 EP1155754 A2 EP 1155754A2 EP 01102440 A EP01102440 A EP 01102440A EP 01102440 A EP01102440 A EP 01102440A EP 1155754 A2 EP1155754 A2 EP 1155754A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- mandrel
- tip section
- piercing
- section
- tip
- 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.)
- Granted
Links
- 238000005096 rolling process Methods 0.000 title claims description 16
- 239000000463 material Substances 0.000 claims abstract description 19
- 238000002844 melting Methods 0.000 claims abstract description 13
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 8
- 239000000956 alloy Substances 0.000 claims abstract description 8
- 229910001182 Mo alloy Inorganic materials 0.000 claims abstract description 4
- 229910001315 Tool steel Inorganic materials 0.000 claims abstract description 4
- CPTCUNLUKFTXKF-UHFFFAOYSA-N [Ti].[Zr].[Mo] Chemical compound [Ti].[Zr].[Mo] CPTCUNLUKFTXKF-UHFFFAOYSA-N 0.000 claims description 3
- 230000008018 melting Effects 0.000 abstract description 6
- ZPZCREMGFMRIRR-UHFFFAOYSA-N molybdenum titanium Chemical compound [Ti].[Mo] ZPZCREMGFMRIRR-UHFFFAOYSA-N 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000219100 Rhamnaceae Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
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
-
- 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
Definitions
- the invention relates to a piercing mandrel for cross-rolling metallic hollow bodies on diagonal rolling mills, with a clamping shank and with one to the tip curved course of the roll bale.
- Hole mandrels of this type serve as internal tools for cross-rolling metallic Hollow blocks.
- the piercing mandrels are subject to high thermal and mechanical abrasion Stress. The high stress leads to short ones Downtimes.
- the invention has for its object the life of the mandrels at Cross-rolling of metallic hollow blocks at low temperatures on cross-rolling mills taking into account a qualitative improvement of the inner surface, as well as reducing tool costs.
- the object is achieved in that the mandrel bale into two longitudinal sections, a tip section and a rear longitudinal section as a piercing mandrel main body, is divided and that the tip section at full Cross section of a high-melting material or a high-melting Material alloy is made.
- the high-melting material or the high melting material alloy significantly increase the service life in the full cross-section.
- the higher strength at the tip of the punch the inner surface of the metallic hollow body is qualitatively improved.
- the bigger one Tool life also means a reduction in the cost of the forming tools.
- the division in two now also allows cross-rolling of higher and higher alloys Materials that were previously only possible to a limited extent.
- the use of a punch with a tip section made of a high-melting material or a high melting material alloy makes the cross rolling of high alloys Materials only economically because the service life of the piercing mandrel increases considerably improved.
- the tip section is about a third and the rear piercing pin body takes up about two thirds of the length of the roll bale.
- a particularly suitable material results from the fact that the tip section consists of a titanium-zirconium-molybdenum alloy (TZM).
- ZTM titanium-zirconium-molybdenum alloy
- the remaining part of the piercing mandrel can be thermal and abrasively less stressed material, so that the basic mandrel body is made of high temperature resistant tool steel
- One embodiment provides that the tip section with the basic piercing mandrel body is screwed by means of a thread.
- the screw connection resilience e.g. by choosing the direction of incline and the direction of rotation of the tool to be influenced.
- the screw connection can be configured in such a way that Perforated mandrel body is provided with a blind hole with an internal thread and that the tip section has a corresponding threaded pin.
- the higher stress on the tip section can vary according to other characteristics can also be countered by making the tip section light after wear is interchangeable.
- the lower tool costs then allow that to be a basic punch body several tip sections are kept in stock.
- the top sections are already selected as suitable with regard to their thread and the tolerances.
- the stress in the material of the basic mandrel body can be caused by cooling be influenced, nevertheless it is easier that at least the tip section is uncooled.
- the piercing mandrel 1 is clamped in the cross rolling mill via a clamping shaft 1a and works rotating.
- the punch mandrel bale 2 is of the largest diameter shaped starting with a curve arched to the top.
- the mandrel bale 2 is further divided into two longitudinal sections 3, namely in a front tip section 4 and a rear longitudinal section 5, namely the punch body 6.
- the Tip section 4 has a full cross section 4a and consists of a high melting material or from a high melting material alloy. in the Embodiment takes the tip section 4 about a third and the rear Perforated mandrel body 6 about two thirds of the length of the perforated mandrel bale.
- the tip section 4 preferably consists of a titanium-zirconium-molybdenum alloy (TZM).
- the main body of the mandrel can be made from high heat-resistant tool steel can be formed.
- the tip section 4 is connected to the basic mandrel body 6 by means of a thread 7 screwed.
- a blind hole 8 with an internal thread is in the mandrel base body 6 9 and the tip section 4 has a corresponding one Threaded pin 10 on.
- Resulting parting line 11 has the piercing mandrel 1 from the piercing mandrel main body 6 starting in the tip section 4 a common, steady Course 12 of the roll bale 2.
- the tip section 4 can easily be replaced by loosening the thread 7 when worn be, whereby for a piercing mandrel base body 6 several tip sections 4 can be kept in stock.
- the tip section 4 is in itself uncooled.
- the basic body of piercing arbor 6 be cooled inside or outside in the usual way.
Abstract
Description
Die Erfindung betrifft einen Lochdorn zum Schrägwalzen von metallischen Hohlkörpern auf Schrägwalzwerken, mit einem Einspannschaft und mit einem zur Spitze hin gewölbten Verlauf des Walzballens.The invention relates to a piercing mandrel for cross-rolling metallic hollow bodies on diagonal rolling mills, with a clamping shank and with one to the tip curved course of the roll bale.
Derartige Lochdorne dienen als Innenwerkzeug beim Schrägwalzen von metallischen Hohlblöcken. Die Lochdorne unterliegen einer hohen thermischen und mechanischabrasiven Beanspruchung. Die hohe Beanspruchung führt demzufolge zu kurzen Standzeiten.Hole mandrels of this type serve as internal tools for cross-rolling metallic Hollow blocks. The piercing mandrels are subject to high thermal and mechanical abrasion Stress. The high stress leads to short ones Downtimes.
Es ist vom Nachbargebiet der Walzdorne mit Walzstangen für Schrägwalzwerke bekannt (DE 196 04 969 A1), die Standzeiten durch besondere Maßnahmen zu erhöhen. Als solche Maßnahmen gelten das Ausführen der Lochdornspitze aus besonders hitzebeständigen Werkstoffen, wie z.B. technischer Keramik, die Beschichtung der Lochdornoberfläche mit Zusatzwerkstoffen, eine gesteuerte Oxidation der Oberfläche sowie eine Wasserspritz- oder Tauchkühlung im Inneren der Lochdorne mit Wasser durch die Walzstangen hindurch. Alle diese Maßnahmen waren bis jetzt wenig geeignet, die abrasive Beanspruchung der Lochdorne beim Schrägwalzen zu vermindern, so dass immer noch nicht ausreichende Standzeiten hingenommen werden müssen. It is known from the neighboring area of the mandrels with rolling rods for cross-rolling mills (DE 196 04 969 A1) to increase the service life through special measures. The execution of the piercing mandrel tip is considered to be such measures heat-resistant materials such as technical ceramics, the coating the perforated surface with filler materials, a controlled oxidation of the surface as well as water spray or immersion cooling inside the piercing mandrels Water through the roller bars. So far, all of these measures have been few suitable for the abrasive loading of the piercing mandrels during cross rolling diminish, so that insufficient downtimes are still tolerated have to.
Der Erfindung liegt die Aufgabe zugrunde, die Standzeiten der Lochdorne beim Schrägwalzen von metallischen fertigungswarmen Hohlblöcken auf Schrägwalzwerken unter Berücksichtigung einer qualitativen Verbesserung der Innenoberfläche, sowie unter Verminderung der Werkzeugkosten, zu erhöhen.The invention has for its object the life of the mandrels at Cross-rolling of metallic hollow blocks at low temperatures on cross-rolling mills taking into account a qualitative improvement of the inner surface, as well as reducing tool costs.
Die gestellte Aufgabe wird erfindungsgemäß dadurch gelöst, dass der Lochdornballen in zwei Längsabschnitte, einen Spitzenabschnitt und einen hinteren Längsabschnitt als Lochdorngrundkörper, geteilt ist und dass der Spitzenabschnitt bei vollem Querschnitt aus einem hoch schmelzenden Werkstoff oder einer hoch schmelzenden Werkstoff-Legierung besteht. Der hochschmelzende Werkstoff oder die hoch schmelzende Werkstoff-Legierung erhöhen im vollen Querschnitt die Standzeit erheblich. Außerdem wird durch die höhere Festigkeit an der Spitze des Lochdornes die Innenoberfläche des metallischen Hohlkörpers qualitativ verbessert. Die größere Standzeit bedeutet außerdem eine Verringerung der Kosten für die Umformwerkzeuge. Die Zweiteilung erlaubt nun zusätzlich das Schrägwalzen von höher und hochlegierten Werkstoffen, was früher nur bedingt möglich war. Der Einsatz eines Lochdornes mit einem Spitzenabschnitt aus einem hoch schmelzenden Werkstoff oder aus einer hoch schmelzenden Werkstofflegierung macht das Schrägwalzen von hochlegierten Werkstoffen erst wirtschaftlich, weil sich die Standzeit des Lochdornes erheblich verbessert.According to the invention, the object is achieved in that the mandrel bale into two longitudinal sections, a tip section and a rear longitudinal section as a piercing mandrel main body, is divided and that the tip section at full Cross section of a high-melting material or a high-melting Material alloy is made. The high-melting material or the high melting material alloy significantly increase the service life in the full cross-section. In addition, the higher strength at the tip of the punch the inner surface of the metallic hollow body is qualitatively improved. The bigger one Tool life also means a reduction in the cost of the forming tools. The division in two now also allows cross-rolling of higher and higher alloys Materials that were previously only possible to a limited extent. The use of a punch with a tip section made of a high-melting material or a high melting material alloy makes the cross rolling of high alloys Materials only economically because the service life of the piercing mandrel increases considerably improved.
Zur wirtschaftlichen Herstellung im Sinn der Kostenverminderung und damit zur Verminderung der notwendigen Menge an hoch schmelzendem Werkstoff, ist weiterhin vorgesehen, dass der Spitzenabschnitt etwa ein Drittel und der rückwärtige Lochdorngrundkörper etwa zwei Drittel der Länge des Walzballens einnimmt.For economical production in the sense of cost reduction and thus for reduction the necessary amount of high-melting material is still provided that the tip section is about a third and the rear piercing pin body takes up about two thirds of the length of the roll bale.
Ein besonders geeigneter Werkstoff ergibt sich dadurch, dass der Spitzenabschnitt aus einer Titan-Zirkon-Molybdänlegierung (TZM) besteht. A particularly suitable material results from the fact that the tip section consists of a titanium-zirconium-molybdenum alloy (TZM).
Gegenüber dem Spitzenabschnitt kann der übrige Teil des Lochdornes aus thermisch und abrasiv weniger beanspruchtem Material bestehen, so dass der Lochdorngrundkörper aus hoch warmfestem Werkzeugstahl gebildet istCompared to the tip section, the remaining part of the piercing mandrel can be thermal and abrasively less stressed material, so that the basic mandrel body is made of high temperature resistant tool steel
Eine Ausgestaltung sieht vor, dass der Spitzenabschnitt mit dem Lochdorngrundkörper mittels eines Gewindes verschraubt ist. Dabei kann die Verschraubungsbelastbarkeit z.B. durch Wahl der Steigungsrichtung und Wahl der Drehrichtung des Werkzeuges beeinflusst werden.One embodiment provides that the tip section with the basic piercing mandrel body is screwed by means of a thread. The screw connection resilience e.g. by choosing the direction of incline and the direction of rotation of the tool to be influenced.
Die Verschraubung kann nach weiteren Merkmalen derart ausgestaltet sein, dass im Lochdorngrundkörper eine Sacklochbohrung mit Innengewinde vorgesehen ist und dass der Spitzenabschnitt einen korrespondierenden Gewindezapfen aufweist.According to further features, the screw connection can be configured in such a way that Perforated mandrel body is provided with a blind hole with an internal thread and that the tip section has a corresponding threaded pin.
Die unterschiedlich beanspruchten Abschnitte des Lochdorns, die beim Walzen zum Einsatz kommen, gestatten einen Übergang von dem Spitzenabschnitt auf den Lochdorngrundkörper. Demzufolge ist es vorteilhaft, dass der Lochdorngrundkörper und der Spitzenabschnitt einen von einer Trennfuge abgesehen gemeinsamen, stetigen Verlauf aufweisen.The differently stressed sections of the piercing mandrel, which during rolling to Used allow a transition from the tip section to the Basic punch body. As a result, it is advantageous that the piercing mandrel body and the tip section, apart from a parting line, is a common, continuous one Show course.
Der höheren Beanspruchung des Spitzenabschnitts kann nach anderen Merkmalen auch dadurch begegnet werden, dass der Spitzenabschnitt nach Verschleiß leicht austauschbar ist.The higher stress on the tip section can vary according to other characteristics can also be countered by making the tip section light after wear is interchangeable.
Die geringeren Werkzeugkosten gestatten dann, dass zu einem Lochdorngrundkörper mehrere Spitzenabschnitte am Lager gehalten werden. Die Spitzenabschnitte sind bezüglich ihres Gewindes und der Toleranzen dann schon als passend ausgesucht. The lower tool costs then allow that to be a basic punch body several tip sections are kept in stock. The top sections are already selected as suitable with regard to their thread and the tolerances.
Die Beanspruchung im Werkstoff des Lochdorngrundkörpers kann zwar durch kühlung beeinflusst werden, dennoch ist es einfacher, dass zumindest der Spitzenabschnitt ungekühlt ist.The stress in the material of the basic mandrel body can be caused by cooling be influenced, nevertheless it is easier that at least the tip section is uncooled.
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt, das nachfolgend näher erläutert wird.In the drawing, an embodiment of the invention is shown, the following is explained in more detail.
Die einzige Figur der Zeichnung zeigt eine Seitenansicht des Lochdornes mit einem Teilschnitt im Bereich des Spitzenabschnitts.The only figure in the drawing shows a side view of the piercing mandrel with a Partial cut in the area of the tip section.
Der Lochdorn 1 wird im Schrägwalzwerk über einen Einspannschaft 1a eingespannt
und arbeitet rotierend. Der Lochdornballen 2 ist von einem größten Durchmesser
ausgehend mit einem zur Spitze gewölbten Verlauf geformt. Der Lochdornballen 2 ist
ferner in zwei Längsabschnitte 3 geteilt und zwar in einen vorderen Spitzenabschnitt
4 und einen hinteren Längsabschnitt 5, nämlich den Lochdorngrundkörper 6. Der
Spitzenabschnitt 4 besitzt einen Vollquerschnitt 4a und besteht aus einem hoch
schmelzenden Werkstoff oder aus einer hoch schmelzenden Werkstoff-Legierung. Im
Ausführungsbeispiel nimmt der Spitzenabschnitt 4 etwa ein Drittel und der rückwärtige
Lochdorngrundkörper 6 etwa zwei Drittel der Länge des Lochdornballens ein.
Vorzugsweise besteht der Spitzenabschnitt 4 aus einer Titan-Zirkon-Molybdänlegierung
(TZM). Der Lochdorngrundkörper hingegen kann aus hoch
warmfesten Werkzeugstahl gebildet sein.The piercing mandrel 1 is clamped in the cross rolling mill via a clamping
Der Spitzenabschnitt 4 wird mit dem Lochdorngrundkörper 6 mittels eines Gewindes
7 verschraubt. Dazu ist im Lochdorngrundkörper 6 eine Sacklochbohrung 8 mit Innengewinde
9 vorgesehen und der Spitzenabschnitt 4 weist einen korrespondierenden
Gewindezapfen 10 auf. Abgesehen von der sich durch eine geringfügige Phasenbearbeitung
ergebenden Trennfuge 11 besitzt der Lochdorn 1 vom Lochdorngrundkörper
6 ausgehend bis in den Spitzenabschnitt 4 einen gemeinsamen, stetigen
Verlauf 12 des Walzballens 2. The tip section 4 is connected to the
Der Spitzenabschnitt 4 kann bei Verschleiß leicht durch Lösen des Gewindes 7 ausgetauscht
werden, wobei für einen Lochdorngrundkörper 6 mehrere Spitzenabschnitte
4 auf Vorrat gehalten werden können.The tip section 4 can easily be replaced by loosening the thread 7 when worn
be, whereby for a piercing
Der Spitzenabschnitt 4 ist an und für sich ungekühlt. Demgegenüber kann der Lochdorngrundkörper
6 in üblicher Art innen oder außen gekühlt sein. The tip section 4 is in itself uncooled. In contrast, the basic body of
- 11
- LochdornPiercing pin
- 1a1a
- EinspannschaftFixture
- 22nd
- LochdornballenBuckthorn bales
- 33rd
- LängsabschnitteLongitudinal sections
- 44th
- SpitzenabschnittTip section
- 4a4a
- VollquerschnittFull cross section
- 55
- LängsabschnittLongitudinal section
- 66
- LochdorngrundkörperBasic punch body
- 77
- Gewindethread
- 88th
- SacklochbohrungBlind hole
- 99
- Innengewindeinner thread
- 1010th
- GewindezapfenThreaded pin
- 1111
- TrennfugeParting line
- 1212th
- stetiger Verlaufsteady course
Claims (10)
dadurch gekennzeichnet, dass der Lochdornballen (2) in zwei Längsabschnitte (3), einen Spitzenabschnitt (4) und einen hinteren Längsabschnitt (5) als Lochdorngrundkörper (6), geteilt ist und dass der Spitzenabschnitt (4) bei vollem Querschnitt (4a) aus einem hoch schmelzenden Werkstoff oder einer hoch schmelzenden Werkstoff-Legierung besteht.Perforated mandrel for cross-rolling of metallic hollow bodies on cross-rolling mills, with a clamping shank and with a roll barrel that curves towards the tip,
characterized in that the piercing mandrel bale (2) is divided into two longitudinal sections (3), a tip section (4) and a rear longitudinal section (5) as a piercing mandrel main body (6), and in that the tip section (4) has a full cross section (4a) a high-melting material or a high-melting material alloy.
dadurch gekennzeichnet, dass der Spitzenabschnitt (4) etwa ein Drittel und der rückwärtige Lochdorngrundkörper (6) etwa zwei Drittel der Länge des Walzballen2) einnimmt.Piercing mandrel according to claim 1,
characterized in that the tip section (4) takes up about a third and the rear punch body (6) about two thirds of the length of the rolled bale 2).
dadurch gekennzeichnet, dass der Spitzenabschnitt (4) aus einer Titan-Zirkon-Molybdänlegierung (TZM) besteht.Piercing mandrel according to one of claims 1 or 2,
characterized in that the tip section (4) consists of a titanium-zirconium-molybdenum alloy (TZM).
dadurch gekennzeichnet, dass der Lochdorngrundkörper (6) aus hoch warmfestem Werkzeugstahl gebildet ist. Perforated mandrel according to one of claims 1 to 3,
characterized in that the piercing mandrel base body (6) is formed from highly heat-resistant tool steel.
dadurch gekennzeichnet, dass der Spitzenabschnitt (4) mit dem Lochdorngrundkörper (6) mittels eines Gewindes (7) verschraubt ist.Perforated mandrel according to one of claims 1 to 4,
characterized in that the tip section (4) is screwed to the basic mandrel body (6) by means of a thread (7).
dadurch gekennzeichnet, dass im Lochdorngrundkörper (6) eine Sacklochbohrung (8) mit Innengewinde (9) vorgesehen ist und dass der Spitzenabschnitt (4) einen korrespondierenden Gewindezapfen (10) aufweist.Piercing mandrel according to claim 5,
characterized in that a blind hole (8) with an internal thread (9) is provided in the basic mandrel body (6) and that the tip section (4) has a corresponding threaded pin (10).
dadurch gekennzeichnet, dass der Lochdorngrundkörper (6) und der Spitzenabschnitt (4) einen von einer Trennfuge (11) abgesehen gemeinsamen, stetigen Verlauf (12) des Lochdornballens (2) aufweisen.Perforated mandrel according to one of claims 1 to 6,
characterized in that the piercing mandrel main body (6) and the tip section (4) have a continuous course (12) of the piercing mandrel bale (2) apart from a parting line (11).
dadurch gekennzeichnet, dass der Spitzenabschnitt (4) nach Verschleiß leicht austauschbar ist.Perforated mandrel according to one of claims 1 to 7,
characterized in that the tip section (4) is easily replaceable after wear.
dadurch gekennzeichnet, dass zu einem Lochdorngrundkörper (6) mehrere Spitzenabschnitte (4) am Lager gehalten werden.Piercing mandrel according to claim 8,
characterized in that a plurality of tip sections (4) are held on the bearing for a basic mandrel body (6).
dadurch gekennzeichnet, dass zumindest der Spitzenabschnitt (4) ungekühlt ist.Piercing mandrel according to one of claims 1 to 9,
characterized in that at least the tip section (4) is uncooled.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10024246 | 2000-05-17 | ||
| DE10024246A DE10024246A1 (en) | 2000-05-17 | 2000-05-17 | Perforated mandrel for cross-rolling of metallic hollow bodies on cross-rolling mills |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1155754A2 true EP1155754A2 (en) | 2001-11-21 |
| EP1155754A3 EP1155754A3 (en) | 2004-02-04 |
| EP1155754B1 EP1155754B1 (en) | 2005-10-05 |
Family
ID=7642436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01102440A Expired - Lifetime EP1155754B1 (en) | 2000-05-17 | 2001-02-03 | Mandrel for skew rolling of metallic hollow bodies in skew rolling mills |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1155754B1 (en) |
| AT (1) | ATE305827T1 (en) |
| DE (2) | DE10024246A1 (en) |
| ES (1) | ES2249331T3 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100577849C (en) * | 2008-09-17 | 2010-01-06 | 西部金属材料股份有限公司 | Method for preparing deep drawing molybdenum belt |
| CN101439362B (en) * | 2007-08-09 | 2014-12-10 | 科克斯技术有限及两合公司 | Mandrel or mandrel bar for manufacture of pipes |
| EP2889090A4 (en) * | 2012-08-24 | 2016-03-30 | Nippon Steel & Sumitomo Metal Corp | Plug for hot pipe manufacturing |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MXPA05006286A (en) † | 2002-12-12 | 2006-01-27 | Sumitomo Metal Ind | Seamless metal tube producing method. |
| DE102013110725B3 (en) | 2013-09-27 | 2015-02-12 | Vallourec Deutschland Gmbh | Hole punch with improved tool life for the production of seamless pipes |
| DE102021128128A1 (en) | 2021-10-28 | 2023-05-04 | Vallourec Deutschland Gmbh | Piercer with a piercer nose for the production of seamless tubes |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62207503A (en) * | 1986-03-10 | 1987-09-11 | Nippon Kokan Kk <Nkk> | Plug for producing seamless pipe |
| JPS63203205A (en) * | 1987-02-17 | 1988-08-23 | Sumitomo Metal Ind Ltd | Plug for piercer |
| JPH01289504A (en) * | 1988-05-16 | 1989-11-21 | Sumitomo Metal Ind Ltd | Plug for steel tube piercing machine |
| JPH02251304A (en) * | 1989-03-24 | 1990-10-09 | Sumitomo Metal Ind Ltd | Plug for piercer |
| EP0743106A1 (en) * | 1995-05-19 | 1996-11-20 | Nkk Corporation | Method for manufacturing seamless pipe |
-
2000
- 2000-05-17 DE DE10024246A patent/DE10024246A1/en not_active Withdrawn
-
2001
- 2001-02-03 EP EP01102440A patent/EP1155754B1/en not_active Expired - Lifetime
- 2001-02-03 ES ES01102440T patent/ES2249331T3/en not_active Expired - Lifetime
- 2001-02-03 DE DE50107592T patent/DE50107592D1/en not_active Expired - Fee Related
- 2001-02-03 AT AT01102440T patent/ATE305827T1/en not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62207503A (en) * | 1986-03-10 | 1987-09-11 | Nippon Kokan Kk <Nkk> | Plug for producing seamless pipe |
| JPS63203205A (en) * | 1987-02-17 | 1988-08-23 | Sumitomo Metal Ind Ltd | Plug for piercer |
| JPH01289504A (en) * | 1988-05-16 | 1989-11-21 | Sumitomo Metal Ind Ltd | Plug for steel tube piercing machine |
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| PATENT ABSTRACTS OF JAPAN vol. 012, no. 484 (M-776), 16. Dezember 1988 (1988-12-16) -& JP 63 203205 A (SUMITOMO METAL IND LTD), 23. August 1988 (1988-08-23) * |
| PATENT ABSTRACTS OF JAPAN vol. 014, no. 069 (M-0932), 8. Februar 1990 (1990-02-08) -& JP 01 289504 A (SUMITOMO METAL IND LTD), 21. November 1989 (1989-11-21) * |
| PATENT ABSTRACTS OF JAPAN vol. 014, no. 579 (M-1063), 25. Dezember 1990 (1990-12-25) -& JP 02 251304 A (SUMITOMO METAL IND LTD), 9. Oktober 1990 (1990-10-09) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101439362B (en) * | 2007-08-09 | 2014-12-10 | 科克斯技术有限及两合公司 | Mandrel or mandrel bar for manufacture of pipes |
| CN100577849C (en) * | 2008-09-17 | 2010-01-06 | 西部金属材料股份有限公司 | Method for preparing deep drawing molybdenum belt |
| EP2889090A4 (en) * | 2012-08-24 | 2016-03-30 | Nippon Steel & Sumitomo Metal Corp | Plug for hot pipe manufacturing |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10024246A1 (en) | 2001-11-22 |
| ES2249331T3 (en) | 2006-04-01 |
| EP1155754B1 (en) | 2005-10-05 |
| EP1155754A3 (en) | 2004-02-04 |
| DE50107592D1 (en) | 2005-11-10 |
| ATE305827T1 (en) | 2005-10-15 |
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