EP1024910B1 - Vorrichtung zur kapselung von rohlingen aus metallischen hochtemperatur-legierungen - Google Patents
Vorrichtung zur kapselung von rohlingen aus metallischen hochtemperatur-legierungen Download PDFInfo
- Publication number
- EP1024910B1 EP1024910B1 EP98949898A EP98949898A EP1024910B1 EP 1024910 B1 EP1024910 B1 EP 1024910B1 EP 98949898 A EP98949898 A EP 98949898A EP 98949898 A EP98949898 A EP 98949898A EP 1024910 B1 EP1024910 B1 EP 1024910B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sheath
- shell
- blank
- extrusion
- inner sheath
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C33/00—Feeding extrusion presses with metal to be extruded ; Loading the dummy block
- B21C33/004—Composite billet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/22—Making metal-coated products; Making products from two or more metals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12229—Intermediate article [e.g., blank, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12389—All metal or with adjacent metals having variation in thickness
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12806—Refractory [Group IVB, VB, or VIB] metal-base component
Definitions
- the invention relates to a device for encapsulation of blanks made of metallic high-temperature alloys, especially TiAl alloys used for hot forming be subjected to an extrusion, the Encapsulation at least from a first, the blank closely but spaced enclosing first inner shell consists.
- JP-A-01 027715 a device is known from which is a blank made of a metallic high-temperature alloy an encapsulation from a blank enclosing the blank Has shell.
- the shell is made made of copper.
- Metallic high-temperature alloys are used Manufacture of highly stressed or highly stressable Components used, for example as components for Use in turbines to power aircraft and like. To achieve the desired properties, e.g. height Strengths will be achieved for certain components basically required that they have been hot formed are.
- TiAl alloys as certain metallic high temperature alloy is a forming of the components also with regard to the setting certain structures are required, which are in other ways cannot be achieved by melt metallurgy. It has shown that hot forming of TiAl ingots Temperatures of 1100 ° C required, compare Y.-W. Kim, D.M. Dimiduk, J. Metals 43 (1991) 40.
- the object is achieved according to the invention in that one enclosing the inner shell closely but at a distance second, outer shell is provided, the first and the second shell made of a metallic material consist.
- the advantage of the solution according to the invention is that that an optimal shield against heat radiation from the blank, i.e. the core of the device will, which is fundamentally at the present temperatures the main cause of heat loss is whereby it is furthermore advantageously possible is an optimal heat conduction resistance Achieve vacuum insulation and finally advantageously to avoid convection as well as the Avoidance of material pairings, which in the case of a Extrusion of this type requires high temperatures lead to undesirable reactions.
- the outer shell of the device faces like experiments have resulted, preferably a wall thickness of 5 to 10 mm, with the outer shell basically made of steel or preferably a titanium alloy, e.g. Ti6Al4V, can be formed.
- the inner shell only a wall thickness in the range of 0.1 up to 1 mm, but particularly advantageously one Wall thickness of 0.3 mm is sufficient to reduce the Achieve radiation performance by 33%. Due to the high heating and processing temperature on the one hand but it is also advantageous for cost reasons as an inner shell sheets or foils made of molybdenum and / or tantalum to use, which have low emissivity have ⁇ . This also makes material pairings avoided that applied to the high temperatures lead to undesirable reactions.
- the webs especially if it is is an outer hollow cylindrical cross section Wrapping acts, by unscrewing or suitable milling of the outer shell.
- the webs are in the outer wrapping and the inner blank or core of the device preferably to train such that their contact surface with very small compared to the adjacent inner shell the remaining lateral surface is.
- the attachment can only be one inner shell that the radiation shield mentioned forms, to a reduction in the radiation power lead by 33%.
- the radiated power to decrease even further it is with another advantageous embodiment of the device possible, to provide a third and a fourth shell, also each closely spaced between the first shell and the second shell and each of these are closely spaced.
- the choice of other covers will depend on the extent to which for the special Extrusion process depending on the one forming the blank Material is considered necessary, one same resistance to deformation of sheath and core material to reach.
- the device with at least two sleeves can also in the configuration of the device described above be advantageous with four shells, the first, inner shell adjacent third shell with a Plurality of both the first and fourth shells Sheath-facing webs to provide the as Spacer to the adjacent first shell and fourth shell act.
- too Bridges by turning or milling the third shell are formed, the corresponding, Turning or milling the blank mentioned above or the outer second shell to form the there Webs, as described, remains unaffected or in the same manner as described can.
- the third shell advantageously consists of the same material as the second shell, advantageously the fourth shell made of the same material how the first shell is made.
- FIGS. 1 and 2 is a device 10 according to the Invention shown, the extrusion too undergoing blank 11 from a metallic high temperature alloy, especially a TiAl alloy, essentially has a cylindrical cross section, accordingly, the device 10 also corresponds also essentially a cylindrical cross section having.
- this shape of the blank 11 or the device 10 by no means always has to be cylindrical, because they are also many other possible configurations of the blank possible, even before the final extrusion a roughly adapted to the shape to be taken later Can have shape.
- the construction principles of the device 10 apply generally, with reference to the representations of the device 10 according to FIGS. 1 and 2 with a substantially circular cross-sectional shape.
- a blank 11 is arranged in the device 10 and of a first, inner shell 12 and a second outer shell 13 surrounded, compare in particular figure 1.
- the wrapping of the blank 11 in the design the device 10 of Figure 1 is complete, i.e. it is not just the outer, cylindrical surface here of the blank 11 surrounded by the sleeves 12, 13, but also the respective flat end faces of the blank 11.
- the first, inner shell 12 encloses closely but at a distance the blank 11, the inner shell 12 for example a wall thickness of 0.1 to 1 mm, preferably 0.3 mm.
- the inner shell which is sheet-shaped is preferably made of tantalum or molybdenum. Basically, however, all other are suitable Materials with low emissivity ⁇ are used provided they do not match the material of the blank (11) or the outer shell (18) react.
- the second, outer shell 13 has a much larger size Wall thickness than the inner shell 12, for example in Range from 5 to 10 mm. Both for the inner shell 12 as well as the outer shell 13 applies that also essentially flat end faces of the blank 11 with the same Cover structure, as described above, covered become.
- the outer shell 13 can for example be made of steel or any other suitable material for this Purposes, for example TiA16V4.
- the webs 110 on the blank 11 and the webs 131 which are likewise formed in an analogous manner on the second outer shell 13, staggered. All in all, the entirety of the casing made up of the first casing 12 and the second casing 13 acts as a double radiation protection shield, with the result that the power emitted by the blank 11 is reduced to approximately one third in comparison to the unprotected blank 11.
- a third shell 14 and a fourth shell 15 are also provided. These sleeves 14, 15 are also closely spaced from one another closely spaced. In this case too has the one adjacent to the first, inner shell 12 third shell 14 a plurality of both to the first shell 12 as well as the fourth shell 15 facing webs 140 on. The webs 140 also serve as spacers to the adjacent first shell 12 and the also adjacent fourth shell 15.
- the third shell 14 can be made of the same material as that second shell 13 exist.
- the fourth shell 15 can consist of the same material as the first shell 12.
- the device according to the invention is not only limited to the extrusion of titanium aluminides, rather, reshaping is also possible by extrusion at temperatures above 1000 ° C for other metallic high-temperature alloys applied very successfully.
- At least the first casing 12 makes the blank vacuum-tight, taking the necessary evacuation of the gaps between at least the first shell 12 and the blank 11 is achieved by having the lid and the bottom at least the first shell 12 by inexpensive Electron beam welding welded in a vacuum chamber.
- the manufacture of the device 10 can thus be designed relatively inexpensively.
- the other shells 13 to 15 of the device can if necessary, be vacuum-tight.
- ⁇ 0.3 often applies.
- the resulting heat losses can be very effectively prevented at high temperatures by attaching one or more radiation shields (shells) which are introduced between the hot body or blank 11 and the cold environment.
- the strands were cut open and the cross-sectional shape of the TiAl blank 10 was monitored over the length of the strand.
- circular cross sections of the TiAl raw ring 10 with a diameter of 22.9 mm should result with the selected transducer diameter of 85 mm and the die diameter of 30 mm.
- 3a-3d show the minimum and maximum diameters of the generally oval cross sections of the TiAl blank 10 after these tests. The results show that in the case of the TiAl6V4 capsule without thermal insulation, the most unfavorable conditions are present, i.e.
- the core cross-section shows the greatest differences between the minimum (d min ) and maximum (d max ) diameter and is due to the low deformation resistance of the TiAl6V4 alloy with the core material sometimes considerably above the ideal value of 22.9 mm.
- the cross section varies significantly over the length of the strand. In the case of steel encapsulation without thermal insulation, the cross-sections are more approximate to the circular shape and the diameter curve over the length is more uniform, but the values are above the ideal value of 22.9 mm. In contrast, the use of an encapsulation made of steel with thermal insulation leads to a diameter progression of 22.9 mm, whereby the most even progression is observed for the extended waiting time of 50 s.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
- Powder Metallurgy (AREA)
- Forging (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
Description
- Fig. 1
- im Schnitt eine Vorrichtung gemäß der Erfindung mit zwei Hüllen, die einen Rohling aus einer metallischen Hochtemperatur-Legierung umschließen,
- Fig. 2
- eine Ausgestaltung der Vorrichtung der Erfindung gemäß Figur 1, bei der jedoch wenigstens in Teilbereichen der Rohling aus einer metallischen Hochtemperatur-Legierung von vier Umhüllungen umschlossen ist,
- Fig. 3a-3b
- den Verlauf eines minimalen und eines maximalen Durchmessers des Querschnittes des Kernes (Rohing) in der Vorrichtung über der Stranglänge bei verschiedenen Formen der Kapselung und Wartezeiten nach dem Anwärmen,
- Fig. 4
- den Kraftverlauf beim Strangpressen in einer Stahlkapselung mit Wärmeisolation nach einer Wartezeit von 25 sec nach dem Anwärmen und
- Fig. 5
- den Kraftverlauf beim Strangpressen in einer Stahlkapsel mit Wärmeisolation nach einer Wartezeit von 50 sec nach dem Anwärmen.
- Als Strahlungsschutzschilde (Hüllen) müssen nach Gl. 2 Werkstoffe mit geringem Emissionsvermögen ε verwendet werden. Aufgrund der hohen Temperatur und aus Kostengründen ist die Werkstoffauswahl auf Bleche bzw. Folien aus Mo oder Ta beschränkt. Allerdings sollten diese Werkstoffe eine möglichst glatte und oxidfreie Oberfläche haben.
- Der Abstand zwischen heißem Körper und dem ersten Strahlungsschutzschild und zwischen weiteren Strahlungsschutzschilden sollte nach G1. 2 möglichst klein gehalten werden.
- Wärmeverluste durch Konvektion bzw. Wärmeleitung müssen vermieden werden.
- 10
- Vorrichtung
- 11
- Rohling
- 110
- Steg
- 12
- erste, innere Hülle
- 120
- Wanddicke
- 13
- zweite, äußere Hülle
- 130
- Wanddicke
- 131
- Steg
- 14
- dritte Hülle
- 140
- Steg
- 15
- vierte Hülle
Claims (15)
- Vorrichtung (10) zur Kapselung von Rohlingen (11) aus metallischen Hochtemperatur-Legierungen, insbesondere TiAl-Legierungen, die zum Warmumformen einer Strangpressung unterzogen werden, wobei die Kapselung wenigstens aus einer ersten, den Rohling (11) eng aber beabstandet umschließenden ersten inneren Hülle (12) besteht, dadurch gekennzeichnet, daß eine die innere Hülle (12) eng aber beabstandet umschließende zweite, äußere Hülle (13) vorgesehen ist, wobei die erste und zweite Hülle (12,13) aus einem metallischen Werkstoff besteht.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die innere Hülle (12) durch ein blechförmiges Element gebildet wird.
- Vorrichtung nach einem oder beiden der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die innere Hülle (12) eine Wanddicke (120) im Bereich von 0,1 bis 1 mm aufweist.
- Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die Wanddicke (120) 0,3 mm beträgt.
- Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die innere Hülle aus Molybdän oder Tantal besteht.
- Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die äußere Hülle eine Wanddicke (130) im Bereich von 5 bis 10 mm aufweist.
- Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die äußere Hülle aus Stahl gebildet wird.
- Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die äußere Hülle (13) aus TiAl6V4 gebildet wird.
- Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß der Rohling (11) eine Mehrzahl von vorspringenden Stegen (110) aufweist, die als Abstandshalter zur den Rohling (11) umhüllenden inneren Hülle (12) fungieren.
- Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die äußere Hülle (13) eine Mehrzahl von vorspringenden, auf die innere Hülle (13) gerichteten Stegen aufweist, die als Abstandshalter zur inneren Hülle (12) fungieren.
- Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß eine dritte Hülle und eine vierte Hülle (15) vorgesehen sind, die jeweils voneinander eng beabstandet zwischen der ersten Hülle (12) und der zweiten Hülle (13) und jeweils zu diesen eng beabstandet angeordnet sind.
- Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, daß die zur ersten, inneren Hülle (12) beabstandete dritte Hülle (14) eine Mehrzahl von sowohl zur ersten Hülle (12) als auch zur vierten Hülle (14) hingerichteten Stegen (140) aufweist, die als Abstandshalter zu der benachbarten ersten Hülle (12) und vierten Hülle (15) fungieren.
- Vorrichtung nach einem oder mehreren der Ansprüche 11 oder 12, dadurch gekennzeichnet, daß die dritte Hülle (14) aus dem gleichen Werkstoff wie die zweite Hülle (13) besteht.
- Vorrichtung nach einem oder mehreren der Ansprüche 11 bis 13, dadurch gekennzeichnet, daß die vierte Hülle (15) aus dem gleichen Werkstoff wie die erste Hülle (12) besteht.
- Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 14, dadurch gekennzeichnet, daß wenigstens die äußeren Hülle (13) den Rohling (11) vakuumdicht umschließt.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19747257A DE19747257C2 (de) | 1997-10-25 | 1997-10-25 | Vorrichtung zur Kapselung von Rohlingen aus metallischen Hochtemperatur-Legierungen |
| DE19747257 | 1997-10-25 | ||
| PCT/DE1998/002369 WO1999021667A1 (de) | 1997-10-25 | 1998-08-17 | Vorrichtung zur kapselung von rohlingen aus metallischen hochtemperatur-legierungen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1024910A1 EP1024910A1 (de) | 2000-08-09 |
| EP1024910B1 true EP1024910B1 (de) | 2002-12-04 |
Family
ID=7846658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98949898A Expired - Lifetime EP1024910B1 (de) | 1997-10-25 | 1998-08-17 | Vorrichtung zur kapselung von rohlingen aus metallischen hochtemperatur-legierungen |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6420051B1 (de) |
| EP (1) | EP1024910B1 (de) |
| AT (1) | ATE228896T1 (de) |
| DE (2) | DE19747257C2 (de) |
| WO (1) | WO1999021667A1 (de) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10134525A1 (de) * | 2001-07-16 | 2003-01-30 | Gfe Met & Mat Gmbh | Verfahren zum kapsellosen Umformen von gamma-TiAl-Werkstoffen |
| DE102005018658B3 (de) * | 2005-04-21 | 2006-10-12 | Brandenburgische Technische Universität Cottbus | Verfahren und Vorrichtung zum Kapseln und Warmumformen von Rohlingen aus metallischen Hochtemperatur-Legierungen |
| US7923127B2 (en) * | 2005-11-09 | 2011-04-12 | United Technologies Corporation | Direct rolling of cast gamma titanium aluminide alloys |
| EP2272664A1 (de) * | 2009-07-08 | 2011-01-12 | Brandenburgische Technische Universität | Verfahren zur Herstellung von Folien, Blechen und Formteilen aus einer Legierung mit den Hauptbestandteilen Aluminium und Titan. |
| CN101817135B (zh) * | 2010-04-13 | 2012-06-27 | 中南大学 | 一种TiAl基合金高温双层隔氧包套制作方法 |
| CN107737812A (zh) * | 2017-11-09 | 2018-02-27 | 河南科技大学 | 一种金属件挤压成形方法 |
| CN112958626A (zh) * | 2021-02-04 | 2021-06-15 | 西北工业大学 | 一种适用于TiAl合金轧制的包套及其制备方法 |
| CN114247751B (zh) * | 2021-12-22 | 2023-11-03 | 西北工业大学重庆科创中心 | 一种适用于tnm合金板材制备的方法 |
| CN114346136B (zh) * | 2021-12-27 | 2022-09-09 | 武汉理工大学 | TiAl涡轮叶片应力-温度双增塑近净成形方法 |
| CN119857780B (zh) * | 2025-03-21 | 2025-07-04 | 太原理工大学 | 用于成形金属板材的高温成形真空包套和板材成形方法 |
Family Cites Families (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1398520A (en) * | 1919-07-08 | 1921-11-29 | Howgate Alfred | Apparatus for use in annealing or otherwise treating metals |
| US1684391A (en) * | 1927-01-26 | 1928-09-18 | Green J Birchard | Container for annealing and similar purposes |
| US2091666A (en) * | 1936-07-06 | 1937-08-31 | Frederick A Schwer | Means for heat treatment of metal |
| CH197361A (de) * | 1936-08-17 | 1938-04-30 | Peter Ostendorf | Verfahren zur Herstellung von plattierten Blechen, Platten und dergl. |
| US2102019A (en) * | 1936-09-11 | 1937-12-14 | Angus M Miller | Carburizing box |
| US2861327A (en) * | 1956-09-12 | 1958-11-25 | Westinghouse Electric Corp | Applying protective metal coatings on molybdenum |
| US3164884A (en) * | 1959-09-30 | 1965-01-12 | United States Steel Corp | Multiple rolling of sheets |
| US3067073A (en) * | 1959-11-19 | 1962-12-04 | Reynolds Metals Co | Rolled metal foil treatment |
| US3130089A (en) * | 1960-07-05 | 1964-04-21 | Ryan Aeronautical Co | Heat treatment of preformed finishmachined articles |
| SE364884B (de) * | 1971-03-04 | 1974-03-11 | Asea Ab | |
| US4147506A (en) * | 1977-10-14 | 1979-04-03 | Allegheny Ludlum Industries, Inc. | Method and apparatus for heating coils of strip |
| IT1158934B (it) * | 1983-04-07 | 1987-02-25 | Metalli Ind Spa | Procedimento per la fabbricazione di superconduttori a 15 intrinsecamente multifilamentari e superconduttori ottenuti con tale procedimento |
| DE3664588D1 (en) * | 1985-04-05 | 1989-08-31 | Nippon Steel Corp | Method for producing a clad plate by hot-rolling |
| JPS6427715A (en) * | 1987-07-21 | 1989-01-30 | Hitachi Cable | Hydraulic extrusion method for large deformation resistant metal and billet for this purpose |
| DE3919107A1 (de) * | 1988-08-02 | 1990-02-08 | Asea Brown Boveri | Verfahren zur formgebung und verbesserung der mechanischen eigenschaften von pulvermetallurgisch hergestellten rohlingen aus einer legierung mit erhoehter warmfestigkeit durch strangpressen |
| US4966816A (en) * | 1989-06-07 | 1990-10-30 | Titanium Metals Corporation Of America (Timet) | Pack assembly for hot rolling |
| JPH03177551A (ja) * | 1989-12-05 | 1991-08-01 | Sumitomo Metal Ind Ltd | TiAl系金属間化合物の成形法 |
| JPH0741304B2 (ja) * | 1990-03-13 | 1995-05-10 | 株式会社神戸製鋼所 | 高A1含有Ti合金の熱間押出方法 |
| US5144825A (en) * | 1990-09-27 | 1992-09-08 | The Boeing Company | Elevated temperature envelope forming |
| JPH04147712A (ja) * | 1990-10-08 | 1992-05-21 | Sumitomo Metal Ind Ltd | 貴金属クラッドチタン線材の製造方法 |
| DE9301293U1 (de) * | 1993-01-30 | 1993-03-11 | Ipsen Industries International Gmbh, 4190 Kleve | Halterung zur partiellen Wärmebehandlung von Werkzeugen |
| JPH09171727A (ja) * | 1995-12-19 | 1997-06-30 | Furukawa Electric Co Ltd:The | 金属系超電導線の製造方法 |
-
1997
- 1997-10-25 DE DE19747257A patent/DE19747257C2/de not_active Expired - Fee Related
-
1998
- 1998-08-17 DE DE59806564T patent/DE59806564D1/de not_active Expired - Lifetime
- 1998-08-17 EP EP98949898A patent/EP1024910B1/de not_active Expired - Lifetime
- 1998-08-17 AT AT98949898T patent/ATE228896T1/de active
- 1998-08-17 WO PCT/DE1998/002369 patent/WO1999021667A1/de not_active Ceased
-
2000
- 2000-04-22 US US09/557,584 patent/US6420051B1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US6420051B1 (en) | 2002-07-16 |
| WO1999021667A1 (de) | 1999-05-06 |
| DE19747257A1 (de) | 1999-05-06 |
| EP1024910A1 (de) | 2000-08-09 |
| DE19747257C2 (de) | 2001-04-26 |
| ATE228896T1 (de) | 2002-12-15 |
| DE59806564D1 (de) | 2003-01-16 |
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