EP0297258B1 - Permanent mould for continuous casting of preliminary sections for beam rolling - Google Patents
Permanent mould for continuous casting of preliminary sections for beam rolling Download PDFInfo
- Publication number
- EP0297258B1 EP0297258B1 EP88107714A EP88107714A EP0297258B1 EP 0297258 B1 EP0297258 B1 EP 0297258B1 EP 88107714 A EP88107714 A EP 88107714A EP 88107714 A EP88107714 A EP 88107714A EP 0297258 B1 EP0297258 B1 EP 0297258B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- web
- chill mould
- side walls
- flanges
- region
- 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
- 238000009749 continuous casting Methods 0.000 title claims abstract description 15
- 238000005096 rolling process Methods 0.000 title claims description 7
- 238000005266 casting Methods 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 5
- 239000010959 steel Substances 0.000 claims abstract description 5
- 238000005452 bending Methods 0.000 claims description 2
- 238000007654 immersion Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000012467 final product Substances 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 101100293261 Mus musculus Naa15 gene Proteins 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/0406—Moulds with special profile
Definitions
- the invention relates to a mold for the continuous casting of pre-profiles consisting of a web and two flanges for carrier rolling with two cooled side walls reaching over the web and the flanges and with adjustable arranged between the side walls, determining the flange thickness, cooling end walls.
- the molten steel is introduced into the mold from an intermediate container via a dip tube in the area of the web.
- the end walls of the mold between the side walls can be adjusted to change the flange thickness of the preliminary profile. Changing the web height and web thickness is not possible with this mold.
- Another disadvantage of the known mold shape is that the strand can become jammed as a result of the shrinkage of the strand inside the mold.
- the object of the invention is to provide a continuous casting mold, of the aforementioned type, with which, with a simple design, preliminary profiles for the carrier rolling can be cast with a web height, web thickness and flange thickness which can be set independently of one another.
- preliminary profiles for the carrier rolling can be cast with a web height, web thickness and flange thickness which can be set independently of one another.
- the casting of profiles close to final dimensions with a uniformly good structure should be made possible.
- each side wall of the mold has a straight and an outwardly angled end region, the end walls are arranged between in each case a straight and an angled opposite end region and at least one side wall is adjustable transversely to the casting direction in the direction of its flat surface with respect to the other side wall and the distance between the end side walls is variable.
- the continuous casting mold created in this way can be easily and quickly adjusted independently of one another for casting beam pre-profiles of different web heights, web thicknesses and flange thicknesses, making casting of small production quantities close to the final dimensions economical.
- the special design of the mold prevents the pre-profile from jamming due to its shrinkage within the mold.
- the side walls of the mold in the web area have an enlarged casting area which is limited to only part of the mold height.
- the melt is introduced through a dip tube down to the bath level and the casting metal is well distributed to the end areas.
- the invention is further developed as follows.
- the pouring area merges into the lower format area with a web thickness of 40 to 90 mm.
- the pouring area merges into the end area of the side walls at least on one side.
- Opposing end areas of the side walls run at an angle of 60 to 85 °.
- the end walls of the mold are bulged inwards.
- the preliminary profile is guided below the mold in the web and flange area and, after solidification, is subjected to a bending and straightening process.
- support plates or support rollers corresponding to the shape of the web and flange areas of the preliminary profile are arranged below the continuous casting mold.
- a continuous casting mold for casting pre-profiles consists of two side walls 1, 2 and two end walls 3, 4 arranged between the side walls 1, 2.
- the side walls 1 , 2 have an angled and a straight end region 1a, 1b, 2a, 2b, which form the space for the flanges 6, 7 of the preliminary profile 5 in an opposite arrangement with the end walls 3, 4 arranged between them.
- the end walls 3, 4 are each provided with an inwardly extending projection 8 on the inside of the mold, whereby the flanges 6, 7 are preformed for subsequent rolling.
- the central region of the side walls 1, 2 which forms the web 9 of the preliminary profile 5 form an enlarged pouring region 11 for receiving an immersion pouring tube 10 for introducing the melt into the upper region which merges into the lower format region 12 in an arc shape.
- the pouring area 11 ends in each case at the angled end area 1a, 2a of the side walls 1, 2 (FIGS. 1 to 3).
- the mold is directly followed by several support rollers 13, 14, the arrangement of which is associated with the web 9 and the flanges 6, 7 of the preliminary profile 5, in particular from FIG. 4.
- Water spray nozzles 15 for strand cooling are arranged between the support rollers 13, 14.
- the side walls 1, 2 and the end walls 3, 4 of the mold are provided with cooling channels 16.
- FIGS. 6 and 7 show how the side walls 1, 2 of the mold can be adjusted parallel to one another transversely to the casting direction in the direction of the arrows 17, 18. In this way, the height of the web 9 of the preliminary profile 5 can be changed.
- FIG. 8 A change in the thickness of the web 9 compared to the original setting shown in FIG. 6 is shown in FIG. 8.
- the side wall 2 of the mold is adjusted in the direction of the arrow 19 and the end walls 3, 4 accordingly in the direction of the arrows 20, 21.
- the cast pre-profile 5 according to FIG. 5 is bent from the vertical into the horizontal for directing and straightened again.
- the flanges 6, 7 lying on one side and asymmetrically to the neutral fiber 22 of the web 9 are displaced in the direction of the neutral fiber 22 and thus into the position 6a, 7a. This effect simplifies the subsequent rolling process.
- the invention is not restricted to the exemplary embodiment shown.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Metal Rolling (AREA)
Abstract
Description
Die Erfindung betrifft eine Kokille zum Stranggießen von aus einem Steg und zwei Flanschen bestehenden Vorprofilen zur Trägerwalzung mit zwei über den Steg und die Flanschen reichenden, gekühlten Seitenwänden und mit zwischen den Seitenwänden verstellbar angeordneten, die Flanschdicke bestimmenden, gekühlten Stirnwänden.The invention relates to a mold for the continuous casting of pre-profiles consisting of a web and two flanges for carrier rolling with two cooled side walls reaching over the web and the flanges and with adjustable arranged between the side walls, determining the flange thickness, cooling end walls.
Bei einer derartigen durch die DE-A1-2 218 408 bekannten Kokille wird die Stahlschmelze von einem Zwischenbehälter über ein Tauchgießrohr im Bereich des Steges in die Kokille eingeleitet. Zur Veränderung der Flanschdicke des Vorprofils sind die Stirnwände der Kokille zwischen den Seitenwänden verstellbar. Eine Veränderung der Steghöhe und Stegdicke ist bei dieser Kokille nicht möglich. Ein weiterer Nachteil der bekannten Kokillenform ist, daß es infolge der Schrumpfung des Stranges innerhalb der Kokille zu einer Verklemmung des Stranges kommen kann.In such a mold known from DE-A1-2 218 408, the molten steel is introduced into the mold from an intermediate container via a dip tube in the area of the web. The end walls of the mold between the side walls can be adjusted to change the flange thickness of the preliminary profile. Changing the web height and web thickness is not possible with this mold. Another disadvantage of the known mold shape is that the strand can become jammed as a result of the shrinkage of the strand inside the mold.
Aufgabe der Erfindung ist die Schaffung einer Stranggießkokille, der vorgenannten Gattung, mit der bei einfacher Bauart Vorprofile für die Trägerwalzung mit unabhängig voneinander einstellbarer Steghöhe, Stegdicke und Flanschdicke gegossen werden können. Darüber hinaus soll das Gießen endabmessungsnaher Profile mit gleichmäßig guten Gefüge ermöglicht werden.The object of the invention is to provide a continuous casting mold, of the aforementioned type, with which, with a simple design, preliminary profiles for the carrier rolling can be cast with a web height, web thickness and flange thickness which can be set independently of one another. In addition, the casting of profiles close to final dimensions with a uniformly good structure should be made possible.
Diese Aufgabe wird nach der Erfindung dadurch gelöst, daß jede Seitenwand der Kokille einen geraden und einen nach außen abgewinkelten Endbereich aufweist, die Stirnwände zwischen jeweils einem geraden und einem abgewinkelten gegenüberstehenden Endbereich angeordnet sind und mindestens eine Seitenwand in Richtung ihrer ebenen Fläche gegenüber der anderen Seitenwand quer zur Gießrichtung verstellbar ist und der Abstand der Stirnseitenwände veränderlich ist.This object is achieved according to the invention in that each side wall of the mold has a straight and an outwardly angled end region, the end walls are arranged between in each case a straight and an angled opposite end region and at least one side wall is adjustable transversely to the casting direction in the direction of its flat surface with respect to the other side wall and the distance between the end side walls is variable.
Die so geschaffene Stranggießkokille kann zum Gießen von Trägervorprofilen unterschiedlicher Steghöhe, Stegdicke und Flanschdicke unabhängig voneinander einfach und schnell eingestellt werden, wodurch das endabmessungsnahe Gießen kleiner Produktionsmengen wirtschaftlich wird. Durch die besondere Bauart der Kokille wird ein Festklemmen des Vorprofiles aufgrund seiner Schrumpfung innerhalb der Kokille vermieden.The continuous casting mold created in this way can be easily and quickly adjusted independently of one another for casting beam pre-profiles of different web heights, web thicknesses and flange thicknesses, making casting of small production quantities close to the final dimensions economical. The special design of the mold prevents the pre-profile from jamming due to its shrinkage within the mold.
Zur Verbesserung der Eingießbedingungen beim Gießen von endabmessungsnahen Vorprofilen weisen die Seitenwände der Kokille im Stegbereich einen nur auf einen Teil der Kokillenhöhe beschränkten erweiterten Eingießbereich auf.In order to improve the casting conditions when casting pre-profiles close to the final dimensions, the side walls of the mold in the web area have an enlarged casting area which is limited to only part of the mold height.
Auf diese Weise wird trotz geringer Stegdicke die Einleitung der Schmelze durch ein Tauchgießrohr bis unter den Badspiegel und eine gute Verteilung des Gießmetalls zu den Endbereichen erzielt.In this way, despite the small web thickness, the melt is introduced through a dip tube down to the bath level and the casting metal is well distributed to the end areas.
Die Erfindung wird wie folgt weiter ausgestaltet.The invention is further developed as follows.
Der Eingießbereich geht bogenförmig in den unteren Formatbereich mit einer Stegdicke von 40 bis 90 mm über.The pouring area merges into the lower format area with a web thickness of 40 to 90 mm.
Der Eingießbereich geht mindestens einseitig in den Endbereich der Seitenwände über.The pouring area merges into the end area of the side walls at least on one side.
Gegenüberliegende Endbereiche der Seitenwände verlaufen in einem Winkel von 60 bis 85°.Opposing end areas of the side walls run at an angle of 60 to 85 °.
Die Stirnwände der Kokille sind nach innen vorgewölbt.The end walls of the mold are bulged inwards.
Bei einem Verfahren zum Stranggießen von Vorprofilen mit der erfindungsgemäßen Stranggießkokille wird das Vorprofil unterhalb der Kokille im Steg- und Flanschbereich geführt und nach der Durcherstarrung einem Biege- und Richtvorgang unterworfen.In a process for the continuous casting of preliminary profiles with the continuous casting mold according to the invention, the preliminary profile is guided below the mold in the web and flange area and, after solidification, is subjected to a bending and straightening process.
Zur Durchführung dieses Verfahrens sind unterhalb der Stranggießkokille dem Verlauf der Steg- und der Flanschbereiche des Vorprofils entsprechende Stützplatten oder Stützrollen angeordnet.To carry out this method, support plates or support rollers corresponding to the shape of the web and flange areas of the preliminary profile are arranged below the continuous casting mold.
Weitere Einzelheiten, Merkmale und Vorteile der Erfindung ergeben sich aus der nachstehenden Erläuterung eines in den Zeichnungen schematisch dargestellten Ausführungsbeispiels.Further details, features and advantages of the invention result from the following explanation of an exemplary embodiment shown schematically in the drawings.
Es zeigen:
- Fig. 1
- eine Kokille zum Stranggießen von Vorprofilen in Draufsicht,
- Fig. 2
- die Innenansicht einer Kokillenseitenwand mit einer Stirnwand,
- Fig. 3
- einen Querschnitt der Kokille gemäß der Linie III-III in Fig. 2,
- Fig. 4
- eine Ansicht der Kokillenunterseite mit Stützführungsrollen,
- Fig. 5
- das Profil des Gießstranges,
- Fig. 6, 7 und 8
- Draufsichten der Kokille in verschiedenen Einstellungen.
- Fig. 1
- a mold for the continuous casting of pre-profiles in top view,
- Fig. 2
- the inside view of a mold side wall with an end wall,
- Fig. 3
- 3 shows a cross section of the mold along the line III-III in FIG. 2,
- Fig. 4
- a view of the mold bottom with support guide rollers,
- Fig. 5
- the profile of the casting strand,
- 6, 7 and 8
- Top views of the mold in different settings.
Gemäß Fig. 1 besteht eine Stranggießkokille zum Gießen von Vorprofilen aus zwei Seitenwänden 1, 2 und zwei zwischen den Seitenwänden 1, 2 angeordneten Stirnwänden 3, 4. Zur Bildung eines Gießraumes für ein Vorprofil 5 zur Trägerwalzung (Fig. 5) weisen die Seitenwände 1, 2 einen abgewinkelten und einen geraden Endbereich 1a, 1b, 2a, 2b auf, die in entgegengesetzt gegenüberliegender Anordnung mit den dazwischen angeordneten Stirnwänden 3, 4 den Raum für die Flanschen 6, 7 des Vorprofils 5 bilden. Die Stirnwände 3, 4 sind zur Kokilleninnenseite mit je einem sich nach innen erstreckenden Vorsprung 8 versehen, wodurch die Flansche 6, 7 zur nachfolgenden Walzung vorgeformt werden.1, a continuous casting mold for casting pre-profiles consists of two
Die den Steg 9 des Vorprofils 5 formenden mittleren Bereich der Seitenwände 1, 2 bilden zur Aufnahme eines Tauchgießrohres 10 zur Einleitung der Schmelze im oberen Bereich einen erweiterten Eingießbereich 11, der bogenförmig in den unteren Formatbereich 12 übergeht. Der Eingießbereich 11 endet jeweils an dem abgewinkelten Endbereich 1a, 2a der Seitenwände 1, 2 (Fig. 1 bis 3).The central region of the
Wie aus den Figuren 2, 3 und 4 zu entnehmen, sind der Kokille mehrere Stützrollen 13, 14 unmittelbar nachgeordnet, deren dem Steg 9 und den Flanschen 6, 7 des Vorprofils 5 zugehörige Anordnung insbesondere aus Fig. 4 ersichtlich ist. Zwischen den Stützrollen 13, 14 sind Wassersprühdüsen 15 zur Strangkühlung angeordnet.As can be seen from FIGS. 2, 3 and 4, the mold is directly followed by
Gemäß Fig. 3 sind die Seitenwände 1, 2 und die Stirnwände 3, 4 der Kokille mit Kühlkanälen 16 versehen.3, the
In den Figuren 6 und 7 ist dargestellt, wie die Seitenwände 1, 2 der Kokille parallel zueinander quer zur Gießrichtung in Richtung der Pfeile 17, 18 verstellbar sind. Auf diese Weise kann die Höhe des Steges 9 des Vorprofils 5 verändert werden.FIGS. 6 and 7 show how the
Eine Veränderung der Dicke des Steges 9 gegenüber der in Fig. 6 dargestellten ursprünglichen Einstellung zeigt Fig. 8. Dabei werden die Seitenwand 2 der Kokille in Richtung des Pfeiles 19 und die Stirnwände 3, 4 entsprechend in Richtung der Pfeile 20,21 verstellt.A change in the thickness of the
Das gegossene Vorprofil 5 gemäß Fig. 5 wird zur Umführung aus der Vertikalen in die Horizontale gebogen und wieder gerade gerichtet. Dabei werden die einseitig und unsymmetisch zur neutralen Faser 22 des Steges 9 liegenden Flansche 6, 7 in Richtung der neutralen Faser 22 und damit in die Stellung 6a, 7a verlagert. Dieser Effekt vereinfacht den nachfolgenden Walzprozess.The cast pre-profile 5 according to FIG. 5 is bent from the vertical into the horizontal for directing and straightened again. The
Die Erfindung ist nicht auf das dargestellte Ausführungsbeispiel beschränkt.The invention is not restricted to the exemplary embodiment shown.
Claims (10)
- Chill mould for the continuous casting of starting profiles, which consist of a web and two flanges, for the manufacture preferably of steel beams, with two side walls reaching over the web and the flanges and with end walls adjustably arranged between the side walls and determining the flange thickness, characterised thereby that each side wall (1, 2) has a straight and an outwardly angled end region (1a, 1b, 2a, 2b), the end walls (3, 4) are arranged between the oppositely disposed straight and angled end regions (1b, 2a and 1a, 2b) and at least one side wall (1, 2) is adjustable in direction of its planar surface relative to the other side wall (1, 2) and transversely to the casting direction (17, 18).
- Chill mould according to claim 1, characterised thereby that, for the reception of an immersion casting pipe (10) between the end regions (1a, 1b, 2a, 2b) the side walls (1, 2) have a widened pouring-in region (11) restricted to only a part of the chill mould height.
- Chill mould according to claim 1 and 2, characterised thereby that the pouring-in region (11) passes over curvilinearly into the lower format region (12) with a web thickness of 40 to 90 millimetres.
- Chill mould according to the claims 1 to 3, characterised thereby that the pouring-in region (11) passes over at at least one side into the angled end region (1a, 2a) of the side walls (1, 2).
- Chill mould according to the claims 1 to 4, characterised thereby that the oppositely disposed end regions (1a, 2b and 1b, 2a) of the side walls extend at an angle of 60 to 85°.
- Chill mould according to the claims 1 to 5, characterised thereby that the end walls (3, 4) have a central projection (8) extending in casting direction.
- Method for the continuous casting of starting profiles in a continuous casting chill mould according to one or several of the claims 1 to 6, characterised thereby that the starting profile (5) is led under the chill mould in the web region and flange region (9, 6, 7) and after hardening-through is subjected to a bending and dressing process.
- Chill mould for carrying out the method according to claim 7, characterised thereby that support grids corresponding to the course of the web regions and the lateral flange regions (, 6, 7) are arranged at the underside of the chill mould.
- Chill mould for carrying out the method according to claim 7, characterised thereby that support rollers (13, 14) corresponding to the course of the web regions and the lateral flange regions (9, 6, 7) are arranged at the underside of the chill mould.
- Starting profile, cast in a chill mould according to one of the claims 1 to 6, for the beam rolling, which is formed from a central web and two flanges, characterised thereby that the web (9) has a thickness of 40 to 90 millimetres and the limbs of the flanges (6, 7) stand at an angle of 60 to 85° relative to one another and the flanges (6, 7) are displaced in opposite direction out of the axis of symmetry (22) of the web (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT88107714T ATE74543T1 (en) | 1987-06-27 | 1988-05-13 | MOLD FOR CONTINUOUS CASTING OF PRE-PROFILES FOR CARRIER ROLLING. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19873721266 DE3721266A1 (en) | 1987-06-27 | 1987-06-27 | ADJUSTABLE CONTINUOUS CHOCOLATE FOR GENERATING PRE-PROFILES FOR CARRIER ROLLING |
| DE3721266 | 1987-06-27 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0297258A2 EP0297258A2 (en) | 1989-01-04 |
| EP0297258A3 EP0297258A3 (en) | 1990-01-17 |
| EP0297258B1 true EP0297258B1 (en) | 1992-04-08 |
Family
ID=6330416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP88107714A Expired - Lifetime EP0297258B1 (en) | 1987-06-27 | 1988-05-13 | Permanent mould for continuous casting of preliminary sections for beam rolling |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4881589A (en) |
| EP (1) | EP0297258B1 (en) |
| JP (1) | JPS6422451A (en) |
| AT (1) | ATE74543T1 (en) |
| CA (1) | CA1314117C (en) |
| DE (2) | DE3721266A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7427526B2 (en) | 1999-12-20 | 2008-09-23 | The Penn State Research Foundation | Deposited thin films and their use in separation and sacrificial layer applications |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3709188A1 (en) * | 1987-03-20 | 1988-09-29 | Mannesmann Ag | POURING PIPE FOR METALLURGICAL VESSELS |
| US5082746A (en) * | 1990-04-20 | 1992-01-21 | Forward Gordon E | As-continuously cast beam blank and method for casting continuously cast beam blank |
| DE4210771C2 (en) * | 1992-04-01 | 1994-07-21 | Preussag Stahl Ag | Method and device for producing a profile |
| US5386869A (en) * | 1993-07-01 | 1995-02-07 | Bethlehem Steel Corporation | Variable flange beam blank and method of continuous casting |
| DE19728957A1 (en) * | 1997-06-30 | 1999-01-07 | Mannesmann Ag | Method and device for producing thin slabs |
| JP3633432B2 (en) | 2000-03-30 | 2005-03-30 | 株式会社日立製作所 | Semiconductor device and power conversion device |
| WO2003060986A2 (en) | 2002-01-11 | 2003-07-24 | The Pennsylvania State University | Method of forming a removable support with a sacrificial layers and of transferring devices |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1049698A (en) * | 1964-05-05 | 1966-11-30 | British Iron Steel Research | Improvements in or relating to the manufacture of elongate articles |
| DE2218408A1 (en) * | 1972-04-15 | 1973-10-25 | Albert Orichel | PROCESS AND SYSTEM FOR THE MANUFACTURING OF PROFILES SUCH AS WIDE FLANGE BEAM, NORMAL BEAM, U - IRON AND SHEET WALLS |
| DE3247207A1 (en) * | 1982-12-21 | 1984-07-05 | SMS Schloemann-Siemag AG, 4000 Düsseldorf | METHOD AND DEVICE FOR ADJUSTING THE CONICITY OF NARROW-SIDED WALLS OF CONTINUOUS CASTING CHILLERS |
| JPS6012257A (en) * | 1983-07-01 | 1985-01-22 | Nippon Steel Corp | Mold for continuous casting of beam blank |
| DE3400220A1 (en) * | 1984-01-05 | 1985-07-18 | SMS Schloemann-Siemag AG, 4000 Düsseldorf | CHOCOLATE FOR CONTINUOUSLY STEEL STRIP |
| US5506964A (en) * | 1992-04-16 | 1996-04-09 | International Business Machines Corporation | System with multiple interface logic circuits including arbitration logic for individually linking multiple processing systems to at least one remote sub-system |
-
1987
- 1987-06-27 DE DE19873721266 patent/DE3721266A1/en not_active Withdrawn
-
1988
- 1988-05-13 EP EP88107714A patent/EP0297258B1/en not_active Expired - Lifetime
- 1988-05-13 DE DE8888107714T patent/DE3869840D1/en not_active Expired - Lifetime
- 1988-05-13 AT AT88107714T patent/ATE74543T1/en not_active IP Right Cessation
- 1988-06-22 CA CA000570134A patent/CA1314117C/en not_active Expired - Fee Related
- 1988-06-27 JP JP63157017A patent/JPS6422451A/en active Pending
- 1988-06-27 US US07/211,757 patent/US4881589A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7427526B2 (en) | 1999-12-20 | 2008-09-23 | The Penn State Research Foundation | Deposited thin films and their use in separation and sacrificial layer applications |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3869840D1 (en) | 1992-05-14 |
| CA1314117C (en) | 1993-03-09 |
| ATE74543T1 (en) | 1992-04-15 |
| EP0297258A3 (en) | 1990-01-17 |
| DE3721266A1 (en) | 1989-01-12 |
| JPS6422451A (en) | 1989-01-25 |
| EP0297258A2 (en) | 1989-01-04 |
| US4881589A (en) | 1989-11-21 |
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