EP0110194A2 - Apparatus for reducing the wall of a tube by rolling - Google Patents
Apparatus for reducing the wall of a tube by rolling Download PDFInfo
- Publication number
- EP0110194A2 EP0110194A2 EP83111045A EP83111045A EP0110194A2 EP 0110194 A2 EP0110194 A2 EP 0110194A2 EP 83111045 A EP83111045 A EP 83111045A EP 83111045 A EP83111045 A EP 83111045A EP 0110194 A2 EP0110194 A2 EP 0110194A2
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- EP
- European Patent Office
- Prior art keywords
- tube
- head
- reducing
- wall thickness
- wall
- Prior art date
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- 238000005096 rolling process Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 11
- 235000014277 Clidemia hirta Nutrition 0.000 claims 1
- 241000069219 Henriettea Species 0.000 claims 1
- 150000001768 cations Chemical class 0.000 claims 1
- 230000033001 locomotion Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Classifications
-
- 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
- B21B19/12—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 parallel to the axis of the work
Definitions
- the invention relates to a method for reducing the tube wall thickness and a rolling mill for reducing the tube wall thickness.
- a rolling mill known from German Patent No. 635 015 has a support ring that wraps around the rollers, these rollers, driven by the frictional force on the support ring and the tube, orbiting this tube as satellites.
- the pipe placed on a mandrel bar is pushed or pulled through the rolling mill.
- the rolls have such a shape and arrangement with respect to the pipe axis, so that the outside diameter of the pipe is reduced during rolling.
- a disadvantage of the rolling mill described is that the tube is loaded with the total rolling moment, which results from the lack of a rotating and separately driven head in which the roller bearings could be placed.
- the rollers are stressed by the axial pressure force of the metal.
- a method known from Polish Patent Specification No. 83 997 for enlarging the outside diameter of a pipe consists in enlarging the pipe diameter in two phases. In the first phase, the pipe is pulled or pushed through a fixed extension head. In the second phase, the tube walls on the extension head are rolled across by a unit consisting of three or more rollers orbiting the tube as satellites. The ratio of the angular velocity of the rotating head and the support ring is chosen so that the torsional moment of the tube is close to zero.
- the device known from Polish patent specification No. 83 997 has a mandrel which is attached to the frame at one end while a cone extension head is seated at the other end.
- the rollers are fixed or pendulum-like in the rotating head and supported by the support ring connected to the drive system.
- the support ring drives the work rolls and reduces their deflection by supporting them.
- the head is connected to a separate drive, the two drives allowing the ratio between their angular velocities to be controlled in such a way that the torsional moment of the tube fluctuates near zero.
- the axes of the work rolls lie on the surface of the cone, the tip of which lies in the axis of the tube and is directed opposite to its direction of movement.
- the tube is surrounded by a set of squeezing rollers, the axes of which are perpendicular to the axis of the tube.
- a set of pull-out rollers is arranged behind the head, the axes of which are perpendicular to the axis of the tube.
- a disadvantage of the described method and the described device is the substantial limitation of the manufacturing possibilities of tubes with small diameter and thin walls, which results from the limitation of the expansion value and the connection of the reduction in the wall thickness with the enlargement of the diameter.
- the wall thickness of the rolled pipe depends on the position of the extension head in relation to the rolls. Due to the insufficient rigidity of the rolling mill in its axial direction, difficulties arise in achieving a high accuracy of the tube wall thickness. In addition, the axial bearings of this rolling mill are stressed by considerable metal pressure forces, which has an adverse effect on their durability.
- the object of the invention is to provide a method and the development of a rolling mill to reduce the tube wall thickness of a tube of any size and to increase the accuracy of the dimensions and shape of the tube.
- the object of the invention is achieved in that in coupled processes of circulating rolling and pushing or pulling-through the tube in the zone-the wall thickness reduction, a pressure is exerted on the inner surface of the tube by the mandrel head, which causes an enlargement of the inside diameter, and a pressure is exerted on the outer surface, which ensures the invariability of the outer diameter of the tube.
- the rolling mill according to the invention has a mandrel fastened at one end to a frame, on the other end of which an extension head is arranged, around which the work rolls mounted in a rotating driven head are arranged, which are supported by a support ring connected to the drive system.
- a push-through device is arranged on one side of the rotating head and a pull-out device is arranged on the other side.
- the axes of the work rolls are parallel to the axis of the tube.
- the surface of the roll barrel is also parallel to the pipe axis in the reduction zone of the pipe wall.
- the bearings of the work rolls are inserted radially in the rotating head.
- An advantage of the method according to the invention is that the degree of reduction of the wall thickness is made independent of the change in the outside diameter of the tube in the rolling zone.
- the use of rollers with parallel axes and with the bale surface parallel to the tube axis without incision or board in the tube wall reduction zone eliminates the axial component of the metal pressure, reduces the stress on the bearings and enables the radial rigidity of the rolling mill to be increased by estimating the Rolling through a strong support ring.
- the tube wall thickness is made independent of the changes in the axial position of the head relative to the rolls, which are caused by elastic entangling of the elements of the rolling mill in the axial direction.
- the load on the individual roller does not depend on the pipe diameter, so it is possible for the pipe feed speed to increase with the increase in its diameter.
- all elements of the rolling mill are in constant motion during rolling, the tube not rotating, which makes it possible to reduce the noise level and the energy consumption and to extend the life of the rolling mill.
- the rolling mill according to the invention has a mandrel 1, on which a tube 2 is placed.
- One end of the mandrel 1 is attached to a frame 3.
- a head 4 At its other end there is a head 4, the wall-reducing part 5 of which has a diameter that increases in the direction of movement of the tube 2 having.
- Four work rolls 6 are arranged around the head 4, the axes of which are parallel to the axis of the tube 2.
- the surface of the bale is parallel to the axis of the tube 2 in the zone of reduction of the wall of the tube 2.
- the rollers 6 are seated in bearings 7, the housings of which are arranged radially displaceably in a rotating head 8 and are supported by a support ring 9 connected to a drive system 10.
- the head 8 is connected to a separate drive system 11, the drive systems 10 and 11 permitting such regulation of their drive moment that the twisting moment on the pipe 2 is within the predetermined limits, for example zero.
- An ejection device 12 is arranged in front of the rollers 6 and an extraction device 13 is arranged behind the rollers 6.
- the method according to the invention for reducing the tube wall thickness consists in that the tube 2 with nominal dimensions of ⁇ 75 x 5 mm, made of unalloyed steel and pushed onto the mandrel 1 is pressed onto the head 4 with a growing diameter of 65 to 69 mm by the ejection device 12 becomes. By expanding the tube 2 on the head 4, it touches the rollers 6 with a diameter of 50 mm.
- the reduction in the tube thickness begins by widening the inside diameter and maintaining an unchanged outside diameter of the tube 2 between the bell-shaped part 5 to reduce the wall thickness and the rollers 6 which roll the tube 2 which moves in the axial direction by orbiting this tube as its satellites.
- the tube has the nominal dimensions of ⁇ 75 mm x 3 mm.
- the tube 2 is smoothed further and calibrated by the remaining part of the working part of the roller 6.
- the pipe has a surface quality that can be achieved with grinding processes and an accuracy of the outside diameter within the limits of ⁇ 0.05 mm.
- the end of the tube 2 is pressed out of the rollers 6 by the squeezing device 12 or pulled out by the pulling device.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
- Metal Extraction Processes (AREA)
- Heat Treatment Of Articles (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Selective Calling Equipment (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Verminderung der Rohrwanddicke und ein Walzwerk zur Verminderung der Rohrwanddicke.The invention relates to a method for reducing the tube wall thickness and a rolling mill for reducing the tube wall thickness.
Ein aus der deutschen Patentschrift Nr. 635 015 bekanntes Walzwerk besitzt einen die Walzen umschlingenden Stützring, wobei diese Walzen, angetrieben durch die Reibungskraft an dem Stützring und dem Rohr, dieses Rohr als Satelliten umkreisen. Das auf einem Dornstange aufgesetzte Rohr wird durch das Walzwerk durchgedrückt oder durchgezogen. Die Walzen haben eine solche Gestalt und Anordnung gegenüber der Rohrachse, damit beim Walzen der Aussendurchmesser des Rohres vermindert wird.A rolling mill known from German Patent No. 635 015 has a support ring that wraps around the rollers, these rollers, driven by the frictional force on the support ring and the tube, orbiting this tube as satellites. The pipe placed on a mandrel bar is pushed or pulled through the rolling mill. The rolls have such a shape and arrangement with respect to the pipe axis, so that the outside diameter of the pipe is reduced during rolling.
Ein Nachteil des beschriebenen Walzwerkes besteht darin, dass das Rohr mit dem Gesamtwert des Walzmomentes belastet wird, was sich aus dem Mangel an rotierendem und separat angetriebenen Kopf ergibt, in welchem die Walzenlager gesetzt werden könnten. Ausserdem sind die Walzen durch die axiale Druckkraft des Metalls beansprucht.A disadvantage of the rolling mill described is that the tube is loaded with the total rolling moment, which results from the lack of a rotating and separately driven head in which the roller bearings could be placed. In addition, the rollers are stressed by the axial pressure force of the metal.
Ein aus der polnischen Patentschrift Nr. 83 997 bekanntes Verfahren zur Vergrösserung des Aussendurchmessers eines Rohres besteht darin, dass die Vergrösserung des Rohr-Durchmessers in zwei Phasen erfolgt. In der ersten Phase wird das Rohr durch einen feststehenden Erweiterungskopf durchgezogen oder durchgedrückt. In der zweiten Phase werden die Rohrwände auf dem Erweiterungskopf durch eine Einheit aus drei oder mehreren das Rohr als Satelliten umkreisenden Walzen quergewalzt. Das Verhältnis der Winkelgeschwindigkeit des rotierenden Kopfes und des Stützringes ist so gewählt, dass das Verdrehungsmoment des Rohres in der Nähe von Null liegt. Die aus der polnischen Patentschrift Nr 83 997 bekannte Vorrichtung hat einen Dorn, der mit einem Ende an dem Gestell befestigt ist, während auf seinem anderen Ende ein Kegel-Erweiterungskopf sitzt. Rund um den Kopf sind drei Arbeitswlzen angeordnet, welche den grundsätzlichen Teil ihrer Arbeitsfläche in Form eines Stumpfkegels haben. Die Walzen sind fest oder pendelartig in dem rotierenden Kopf gelagert und durch den mit dem Antriebssystem verbundenen Stützring abgestützt. Der Stützring treibt die Arbeitswalzen an und vermindert deren Beugung, indem er sie abstützt. Der Kopf ist mit einem separaten Antrieb verbunden, wobei die beiden Antriebe eine solche Regelung des Verhältnisses zwischen ihren Winkelgeschwindigkeiten ermöglichen, dass das Verdrehungsmoment des Rohres-in der Nähe von Null schwankt. Die Achsen der Arbeitswalzen liegen auf der Oberfläche des Kegels, dessen Spitze in der Achse des Rohres liegt und entgegengesetzt zu seiner Bewegungsrichtung gerichtet ist. Das Rohr ist von einem Satz von Ausdräckwalzen umgeben , deren Achsen senkrecht zu der Achse des Rohres sind. Hinter dem Kopf ist ein Satz Ausziehwalzen angeordnet, deren Achsen senkrecht zu der Achse des Rohres sind.A method known from Polish Patent Specification No. 83 997 for enlarging the outside diameter of a pipe consists in enlarging the pipe diameter in two phases. In the first phase, the pipe is pulled or pushed through a fixed extension head. In the second phase, the tube walls on the extension head are rolled across by a unit consisting of three or more rollers orbiting the tube as satellites. The ratio of the angular velocity of the rotating head and the support ring is chosen so that the torsional moment of the tube is close to zero. The device known from Polish patent specification No. 83 997 has a mandrel which is attached to the frame at one end while a cone extension head is seated at the other end. There are three working rolls around the head arranged, which have the basic part of their work surface in the form of a truncated cone. The rollers are fixed or pendulum-like in the rotating head and supported by the support ring connected to the drive system. The support ring drives the work rolls and reduces their deflection by supporting them. The head is connected to a separate drive, the two drives allowing the ratio between their angular velocities to be controlled in such a way that the torsional moment of the tube fluctuates near zero. The axes of the work rolls lie on the surface of the cone, the tip of which lies in the axis of the tube and is directed opposite to its direction of movement. The tube is surrounded by a set of squeezing rollers, the axes of which are perpendicular to the axis of the tube. A set of pull-out rollers is arranged behind the head, the axes of which are perpendicular to the axis of the tube.
Ein Nachteil des beschriebenen Verfahrens und der beschriebenen Vorrichtung besteht in der wesentlichen Beschränkung der Herstellungsmöglichkeiten von Rohren mit kleinem Durchmesser und dünnen Wänden, welche sich aus der Einschränkung des Ausdehnungswertes und des Zusammenhanges der Verminderung der Wanddicke mit der Vergrösserung des Durchmessers ergibt. Die Wandddicke des gewalzten Rohres hängt von der Lage des Erweiterungskopfes gegenüber den Walzen ab. Infolge der ungenügenden Starrheit des Walzwerkes in seiner Achsenrichtung treten Schwierigkeiten bei der Erreichung einer hohen Genauigkeit der Rohrwanddicke ein. Ausserdem werden die Axiallager dieses Walzwerkes durch beträchtliche Metall-Druckkräfte beansprucht, was sich ungünstig auf ihre Beständigkeit auswirkt.A disadvantage of the described method and the described device is the substantial limitation of the manufacturing possibilities of tubes with small diameter and thin walls, which results from the limitation of the expansion value and the connection of the reduction in the wall thickness with the enlargement of the diameter. The wall thickness of the rolled pipe depends on the position of the extension head in relation to the rolls. Due to the insufficient rigidity of the rolling mill in its axial direction, difficulties arise in achieving a high accuracy of the tube wall thickness. In addition, the axial bearings of this rolling mill are stressed by considerable metal pressure forces, which has an adverse effect on their durability.
Aufgabe der Erfindung ist die Schaffung eines Verfahrens und die Entwicklung eines Walzwerkes zur Reduzierung der Rohrwanddicke eines Rohres mit beliebig grossem Durchmesser und die Erhöhung der Genauigkeit der Abmessungen und der Gestalt des Rohres.The object of the invention is to provide a method and the development of a rolling mill to reduce the tube wall thickness of a tube of any size and to increase the accuracy of the dimensions and shape of the tube.
Die Aufgabe der Erfindung wird dadurch gelöst, dass in verkoppelten Prozessen des Umlaufwalzens und des Durchdrückens bzw. Durchziehens-des Rohres in der Zone-der Wanddickenreduzierung auf die Innenfläche des Rohres durch den Dornkopf ein Druck ausgeübt wird, welcher eine Vergrösserung des Innendurchmessers bewirkt, und auf die Aussenfläche ein Druck ausgeübt wird, welcher die Unveränderlichkeit des Aussendurchmessers des Rohres gewährleistet.The object of the invention is achieved in that in coupled processes of circulating rolling and pushing or pulling-through the tube in the zone-the wall thickness reduction, a pressure is exerted on the inner surface of the tube by the mandrel head, which causes an enlargement of the inside diameter, and a pressure is exerted on the outer surface, which ensures the invariability of the outer diameter of the tube.
Das erfindungsgemässe Walzwerk besitzt einen mit einem Ende an einem Gestell befestigten Dorn, auf dessen anderem Ende ein Erweiterungskopf angeordnet ist, rand um welche die in einem rotierenden angetriebenen Kopf gelagerten Arbeitswalzen angeordnet sind, die durch einen mit dem Antriebssystem verbundenen Stützring unterstätzt sind. An einer Seite des rotierënden Kopfes ist eine Durchdrückvorrichtung und an der anderen Seite eine Ausziehvorrichtung angeordnet. Die Achsen der Arbeitswalzen sind zu der Achse des Rohres parallel. Die Oberfläche des Walzenballens ist auch zu der Rohrachse in der Reduzierzone der Rohrwand parallel. Die Lager der Arbeitswalzen sind radial verschiebbar in dem rotierenden Kopf eingesetzt.The rolling mill according to the invention has a mandrel fastened at one end to a frame, on the other end of which an extension head is arranged, around which the work rolls mounted in a rotating driven head are arranged, which are supported by a support ring connected to the drive system. A push-through device is arranged on one side of the rotating head and a pull-out device is arranged on the other side. The axes of the work rolls are parallel to the axis of the tube. The surface of the roll barrel is also parallel to the pipe axis in the reduction zone of the pipe wall. The bearings of the work rolls are inserted radially in the rotating head.
Ein Vorteil des erfindungsgemässen Verfahrens besteht darin, dass der Reduzierungsgrad der Wanddicke von der Anderung des Aussendurchmessers des Rohres in der Walzzone unabhängig gemacht wird. Der Einsatz von Walzen mit paralellen Achsen und mit der zur Rohrachse paralellen Ballenfläche ohne Einschnitt oder Vorstand in der Rohrwand-Reduzierungszone bewirkt die Beseitigung der axialen Komponente des Metalldruckes, eine Verminderung der Beanspruchung der Lager und ermöglicht eine Erhöhung der radialen Steifheit des Walzwerkes durch Abstätzung der Walzen durch einen stcifen Stätzring.An advantage of the method according to the invention is that the degree of reduction of the wall thickness is made independent of the change in the outside diameter of the tube in the rolling zone. The use of rollers with parallel axes and with the bale surface parallel to the tube axis without incision or board in the tube wall reduction zone eliminates the axial component of the metal pressure, reduces the stress on the bearings and enables the radial rigidity of the rolling mill to be increased by estimating the Rolling through a strong support ring.
Dadurch wird gleichzeitig die Rohrwanddicke von den Anderungen der axialen Lage des Kopfes gegenüber den Walzen unabhängig gemacht, welche durch elastische Verfirmungen der Elemente des Walzwerkes in axialer Richtung entstehen. Die Belastung der einzelnen Walze hängt nicht von dem Rohrdurchmesser ab, es ist also eine Zunahme der Rohrvorschubgeschwindigkeit mit der Zunahme seines Durchmessers möglich. Ausserdem befinden sich während des Walzens alle Elemente des Walzwerkes in gleichförmiger Bewegung, wobei das Rohr nicht rotiert, was es erlaubt, den Geräuschpegel und den Energieverbrauch zu vermindern und die Lebensdauer des Walzwerkes zu verlängern.As a result, the tube wall thickness is made independent of the changes in the axial position of the head relative to the rolls, which are caused by elastic entangling of the elements of the rolling mill in the axial direction. The load on the individual roller does not depend on the pipe diameter, so it is possible for the pipe feed speed to increase with the increase in its diameter. In addition, all elements of the rolling mill are in constant motion during rolling, the tube not rotating, which makes it possible to reduce the noise level and the energy consumption and to extend the life of the rolling mill.
Die Erfindung wird nachstehend an einem Ausführungsbeispiel anhand der beigefügten Zeichnungen näher erläutert, worin die einzelnen Figuren zeigen:
- Fig. 1 das Schema des Walzwerkes im Axialschnitt und
- Fig. 2 das Walzwerk im Schnitt A-A.
- Fig. 1 shows the diagram of the rolling mill in axial section and
- Fig. 2 shows the rolling mill in section AA.
Das erfindungsgemässe Walzwerk besitzt einen Dorn 1, auf welchen ein Rohr 2 aufgesetzt ist. Der Dorn 1 ist mit einem Ende an einem Gestell 3 befestigt. An seinem anderen Ende ist ein Kopf 4 angeordnet, dessen die Wand reduzierender Teil 5 einen in Bewegungsrichtung des Rohres 2 hin wachsenden Durchmesser aufweist. Rund um den Kopf 4 sindvier Arbeitswalzen 6 angeordnet, deren Achsen zu der Achse des Rohres 2 parallel sind. Die Oberfläche des Ballens ist in der Zone der Reduzirrung der Wand des Rohres 2 zu der Achse des Rohres 2 parallel. Die Walzen 6 sitzen in Lagern 7, deren Gehäuse radial verschiebbar in einem rotierenden Kopf 8 angeordnet und durch einen mit einem Antriebssystem 10 verbundenen Stützring 9 abgestützt sind. Der Kopf 8. ist mit einem separaten Antriebssystem 11 verbunden, wobei die Antriebssysteme 10 und 11 eine solche Regelung ihres Antriebsmomantes erlauben, dass das-Verdre-, hungsmoment am Rohr 2 in den vorgegebenen Grenzen liegt, z.B. gleich Null wird. Vor den Walzen 6 ist eine Ausdrückvorrichtung 12 und hinter den Walzen 6 eine Ausziehvorrichtung 13 angeordnet. Das erfindungsgemässe Verfahren zur Reduktion der Rohrwanddicke besteht darin, dass das Rohr 2 mit Nennabmessungen von Ø 75 x 5 mm, ausgeführt aus unlegiertem Stahl und aufgesteckt auf den Dorn 1 auf den Kopf 4 mit wachsendem Durchmesser von 65 bis 69 mm durch die Ausdrückvorrichtung 12 aufgedräckt wird. Indem sich das Rohr 2 auf dem Kopf 4 erweitert, berührt es die Walzen 6 mit dem Durchmesser 50 mm. Von diesem Moment an beginnt die Verminderung der Rohrwonddicke durch Erceiterung des Innendurchmeseers und Einheltung eines unveränderten Aussendurchmessers des Rohres 2 zvjschen dem begelförmigen Teil 5 zur Verminderung der Wanddicke und den Walzen 6, welche das sich in axialer Richtung verschiebende Rohr 2 walzen, indem sie dieses Rohr als seine Satelliten umkreisen. Wenn die Wand des Rohres 2 die Zone über 'dem reduzierenden Teil 5 verlässt, besitzt das Rohr die Nennabmessungen von Ø 75 mm x 3 mm. Das Rohr 2 wird weiter geglättet und durch den restlichen Teil des Arbeitsteiles der Walze 6 kalibriert. Im Ergebnis erhält das Rohr eine Oberflächengüte, welche mit ScMleifprozessen erreicht werden kann und eine Genauigkeit des Aussendurchmessers in den Grenzen von ± 0,05 mm. Das Ende des Rohres 2 wird aus den Walzen 6 durch die Ausdräckvorrichtung 12 ausgedrückt oder durch die Ausziehvorrichtung ausgezogen.The rolling mill according to the invention has a mandrel 1, on which a
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT83111045T ATE35231T1 (en) | 1982-11-25 | 1983-11-04 | DEVICE FOR REDUCING THE WALL THICKNESS OF A PIPE BY ROLLING. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL239249 | 1982-11-25 | ||
| PL1982239249A PL139099B1 (en) | 1982-11-25 | 1982-11-25 | Method of reducing thickness of pipe wall and rolling mill therefor |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0110194A2 true EP0110194A2 (en) | 1984-06-13 |
| EP0110194A3 EP0110194A3 (en) | 1984-09-05 |
| EP0110194B1 EP0110194B1 (en) | 1988-06-22 |
Family
ID=20014823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP83111045A Expired EP0110194B1 (en) | 1982-11-25 | 1983-11-04 | Apparatus for reducing the wall of a tube by rolling |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4602493A (en) |
| EP (1) | EP0110194B1 (en) |
| JP (1) | JPS59113908A (en) |
| AT (1) | ATE35231T1 (en) |
| DD (1) | DD217442A5 (en) |
| DE (1) | DE3377114D1 (en) |
| PL (1) | PL139099B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921847A (en) * | 2012-11-20 | 2013-02-13 | 武汉理工大学 | Method and device for precision-rolling and forming cylindrical part |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0785804B2 (en) * | 1986-07-25 | 1995-09-20 | 新日本製鐵株式会社 | Steel pipe rolling method |
| US5351515A (en) * | 1993-01-19 | 1994-10-04 | Sandvik Special Metals Corporation | Apparatus and method for reducing the diameter of a cylindrical workpiece |
| US5626050A (en) * | 1994-12-08 | 1997-05-06 | Aluminum Company Of America | Method of making metal ball bats |
| US7328599B2 (en) * | 2006-02-02 | 2008-02-12 | Thu Van Nguyen | Method and apparatus for making metal ball bats |
| ITMI20081012A1 (en) * | 2008-06-03 | 2009-12-04 | Danieli Off Mecc | LAMINATE OF THE ROTATING EXPANDER TYPE, FOR TUBULAR BODIES, WITH TIP POINTING SYSTEM |
| CN103084520B (en) * | 2013-02-06 | 2015-09-30 | 武汉理工大学 | A kind of precision rolling manufacturing process of interior step cylindrical workpiece and device |
| CN114054506A (en) * | 2020-08-06 | 2022-02-18 | 江苏兴荣高新科技股份有限公司 | Method for continuously rolling copper pipe by planetary pipe mill |
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|---|---|---|---|---|
| US954201A (en) * | 1908-12-17 | 1910-04-05 | Anthony Joseph Mcginness | Rolling mill for tubes. |
| DE635015C (en) * | 1932-09-10 | 1936-09-08 | Fritz Kocks Dr Ing | Process for rolling out hollow bodies |
| DE955407C (en) * | 1954-12-28 | 1957-01-03 | Mannesmann Meer Ag | Device for smoothing, widening and straightening tubular rolling stock in the warm state in helical rolling mills |
| FR1207526A (en) * | 1957-07-13 | 1960-02-17 | Reisholz Stahl & Roehrenwerk | Method and device for the production of seamless pipes, hollow bodies and tubular elements |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US389585A (en) * | 1888-09-18 | Seamless tubes | ||
| US644919A (en) * | 1899-08-08 | 1900-03-06 | John Illingworth | Rod straightening and finishing machine. |
| US1368413A (en) * | 1919-03-26 | 1921-02-15 | Ralph C Stiefel | Tube-rolling mechanism |
| US1596751A (en) * | 1924-10-24 | 1926-08-17 | Sandusky Foundry & Machine Co | Tube-rolling machine |
| US1874995A (en) * | 1930-12-26 | 1932-08-30 | Eaton Mfg Co | Rolling machine |
| BE387391A (en) * | 1931-04-29 | |||
| US2164724A (en) * | 1936-07-25 | 1939-07-04 | Severin Jose | Rolling mill for enlarging hollow bodies |
| US2179918A (en) * | 1938-07-06 | 1939-11-14 | Richard E Brock | Tube rolling mill |
| GB1188374A (en) * | 1966-05-05 | 1970-04-15 | Rotary Profile Anstalt | Improvements in or relating to apparatus for Manufacturing Tubular Articles |
| DE2009867C3 (en) * | 1970-03-03 | 1978-08-03 | Schloemann-Siemag Ag, 4000 Duesseldorf | Rolling head with overhung rolls inclined towards the rolling stock axis |
| US3735617A (en) * | 1970-10-19 | 1973-05-29 | Siemag Siegener Masch Bau | Rolling mill |
| DE2657823C3 (en) * | 1976-12-21 | 1984-04-26 | SMS Schloemann-Siemag AG, 4000 Düsseldorf | Rolling mill for the production of seamless tubes |
| DE2657839B2 (en) * | 1976-12-21 | 1979-09-06 | Schloemann-Siemag Ag, 4000 Duesseldorf | Rolling mill for the continuous rolling of tube blanks into seamless tubes |
| AT366298B (en) * | 1976-12-21 | 1982-03-25 | Schloemann Siemag Ag | ROLLING MILL FOR THE PRODUCTION OF SEAMLESS TUBES |
| FI773910A (en) * | 1977-03-21 | 1978-09-22 | Kabel Metallwerke Ghh | SNEDVALSVERK FOER REDUCERANDE AV LAONGSTRAECKT GODS |
| DE2910445A1 (en) * | 1979-03-16 | 1980-09-18 | Schloemann Siemag Ag | Planetary skew rolling mill for mfg. tube from hollow ingots - where ingot is driven over stationary conical mandrel so tube has larger external dia than ingot |
-
1982
- 1982-11-25 PL PL1982239249A patent/PL139099B1/en unknown
-
1983
- 1983-11-04 AT AT83111045T patent/ATE35231T1/en not_active IP Right Cessation
- 1983-11-04 EP EP83111045A patent/EP0110194B1/en not_active Expired
- 1983-11-04 DE DE8383111045T patent/DE3377114D1/en not_active Expired
- 1983-11-18 US US06/553,068 patent/US4602493A/en not_active Expired - Fee Related
- 1983-11-23 DD DD83257026A patent/DD217442A5/en unknown
- 1983-11-25 JP JP58223043A patent/JPS59113908A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US954201A (en) * | 1908-12-17 | 1910-04-05 | Anthony Joseph Mcginness | Rolling mill for tubes. |
| DE635015C (en) * | 1932-09-10 | 1936-09-08 | Fritz Kocks Dr Ing | Process for rolling out hollow bodies |
| DE955407C (en) * | 1954-12-28 | 1957-01-03 | Mannesmann Meer Ag | Device for smoothing, widening and straightening tubular rolling stock in the warm state in helical rolling mills |
| FR1207526A (en) * | 1957-07-13 | 1960-02-17 | Reisholz Stahl & Roehrenwerk | Method and device for the production of seamless pipes, hollow bodies and tubular elements |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921847A (en) * | 2012-11-20 | 2013-02-13 | 武汉理工大学 | Method and device for precision-rolling and forming cylindrical part |
| CN102921847B (en) * | 2012-11-20 | 2015-09-30 | 武汉理工大学 | A kind of precision rolling manufacturing process of cylindrical member and device |
Also Published As
| Publication number | Publication date |
|---|---|
| US4602493A (en) | 1986-07-29 |
| ATE35231T1 (en) | 1988-07-15 |
| DE3377114D1 (en) | 1988-07-28 |
| PL239249A1 (en) | 1984-06-18 |
| EP0110194A3 (en) | 1984-09-05 |
| EP0110194B1 (en) | 1988-06-22 |
| JPS59113908A (en) | 1984-06-30 |
| DD217442A5 (en) | 1985-01-16 |
| PL139099B1 (en) | 1986-12-31 |
| JPH0254164B2 (en) | 1990-11-20 |
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