DE628393C - Rolling mill for expanding hollow bodies - Google Patents

Rolling mill for expanding hollow bodies

Info

Publication number
DE628393C
DE628393C DEP68732D DEP0068732D DE628393C DE 628393 C DE628393 C DE 628393C DE P68732 D DEP68732 D DE P68732D DE P0068732 D DEP0068732 D DE P0068732D DE 628393 C DE628393 C DE 628393C
Authority
DE
Germany
Prior art keywords
rolling mill
rolling
hollow body
hollow bodies
mandrel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEP68732D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Publication date
Priority to DEP68732D priority Critical patent/DE628393C/en
Application granted granted Critical
Publication of DE628393C publication Critical patent/DE628393C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B19/00Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
    • B21B19/12Tube-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
    • B21B19/14Rolling tubes by means of additional rollers arranged inside the tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Description

Walzwerk zum Aufwerten von Hohlkörpern Die Erfindung betrifft ein Walzwerk zum Aufwerten von Hohlkörpern mit einem in das Innere des Hohlkörpers eingeführten Dorn, durch den der Hohlkörper auf -seiner ganzen Länge gegen :eine sich drehende Walze gedrückt und dabei unter .Verb ößerung seiner Durchmesser ausgewalzt wird.Rolling mill for upgrading hollow bodies The invention relates to a Rolling mill for upgrading hollow bodies with an inserted into the interior of the hollow body Thorn through which the hollow body counteracts its entire length: a rotating one The roller is pressed and rolled out with an enlargement of its diameter.

Walzwerke .dieser Bauart sollen erfindungsgemäß dadurch vervollkommnet werden, daß der auszuwalzende . Hohlkörper durch den Walzdorn gegen zwei in gleicher Drehrichtung, aber mit verschiedenen , Geschwindigkeiten arbeitende Arbeitswalzen -gedrücktwird. Durch diese Maßnahme wird erreicht, daß sich das Rohr mit seinem zwischen den Arbeitswalzen liegenden Teil fest an den Dorn anlegt, bei gleichzeitiger Streckung das Materials zwischen den beiden Walzzonen.According to the invention, rolling mills of this type are to be perfected be that the one to be rolled out. Hollow body through the rolling mandrel against two in the same Direction of rotation, but work rolls operating at different speeds - is pressed. This measure ensures that the pipe with his part lying between the work rolls is firmly attached to the mandrel, while at the same time Stretching the material between the two rolling zones.

Eins Besonderheit wird noch darin gesehen, daß die Walzdrücke an den beiden Enden der einzelnen Walzen zur Herstellung verjüngter Rohre verschieden stark bemessen sind.Another peculiarity is seen in the fact that the rolling pressures on the both ends of the individual rollers to produce tapered tubes of different strengths are sized.

In der Zeichnung ist das Walzwerk dargegestellt, und zwar zeigt Abb. i dasselbe stirnseitig, während Abb. z gegenüber Abb. i in verkleinertem Maße seinen Längsschnitt wiedergibt; Abb.3 zeigt den Dorn. Mit a ist in den Abb. i und 2 das aufzuwertende Rohr und mit b der Dorn bezeichnet. Dieser befindet sich innerhalb des Rohres a und ist, wie die Äbb.2 zeigt, bei h abgestützt. Mit e und d sind die beiden Arbeitswalzen bezeichnet, von denen die mit d bezeichnete gegenüber der ersteren voreilend angetrieben wird.The drawing shows the rolling mill, namely Fig. i the same on the front, while Fig. z is smaller than Fig. i Shows longitudinal section; Fig.3 shows the mandrel. With a in Figs. I and 2 this is tube to be upgraded and denoted by b the mandrel. This is located within of the pipe a and, as Fig. 2 shows, is supported at h. With e and d are the two work rolls, of which the one marked d is opposite the former is driven in advance.

Mit f sind Stützwalzen bezeichnet und mit g in Abb. 3 der besonders ausgebildete Dorn. Der Dorn ist doppelt konisch gehalten, um so das nicht zu vermeidende Durchbiegen ..auf den Arbeitsgang .ohne Einfluß zu lassen.Back-up rolls are designated by f and particularly by g in Fig. 3 trained thorn. The mandrel is kept double conical so that this cannot be avoided Bending ... on the work process .without leaving any influence.

Die Walzen e und d sind, wie die Abb. i und 2 zeigen, mit Kleezapfen versehen und eihaften ihren Antrieb, wie schon oben dargetan, so, daß die Walze d gegenüber der mit ,e .bezeichneten. .voreilt. Beide Walzen verwalten dabei das Rohra, das hierdurch eine Aufwertung erfährt und zwischen den beiden. Walzene und- deiner Streckwirkung unterliegt. Der Dorn b kann dabei frei drehend gelagert sein, kann aber auch, falls sich dies als zweckmäßig erweist, einen besonderen Antrieb erhalten.The rollers e and d are, as shown in Figs. I and 2, with clover pegs provided and their drive, as already shown above, so that the roller d opposite the one marked with, e. .leading. Both reels manage this Rohra, which is upgraded as a result, and between the two. Rollers and subject to your stretching effect. The mandrel b can be freely rotating, but can also, if this proves to be expedient, a special drive obtain.

Claims (2)

PATENTANSPRÜCHE: i. Walzwerk zum Aufwerten von Hohlkörpern mit einem in das Innere des Hohlkörpers ,eingeführten Dorn, durch den der Hohlkörper auf seiner ganzen Länge gegen seine sich drehende Walze gedrückt und dabei unter Vergrößerung seines Durchmessers ausgewalzt wird, dadurch gekennzeichnet, daß der auszuwalzende Hohlkörper (a) durch den Walzdorn (b) gegen zwei mit gleicher Drehrichtung, aber mit verschiedenen Umfangsgeschwindigkeiten arbeitende Arbeitswalzen gedrückt wird. PATENT CLAIMS: i. Rolling mill for upgrading hollow bodies with a mandrel inserted into the interior of the hollow body, through which the hollow body is pressed over its entire length against its rotating roller and thereby rolled out while increasing its diameter, characterized in that the hollow body (a) to be rolled out by the rolling mandrel (b) is pressed against two work rolls operating in the same direction of rotation but at different peripheral speeds. 2. Verfahren zum Betreiben eines Walzwerkes nach Anspruch i, dadurch gekennzeichnet, daß die Walzdrücke an den beiden Enden der dnzelnan Walzen zur Herstellung verjüngter Rohre verschieden stark bemessen sind.2. A method for operating a rolling mill according to claim i, characterized in that the rolling pressures at the two ends of the thin rollers for the production of tapered pipes are dimensioned differently.
DEP68732D Rolling mill for expanding hollow bodies Expired DE628393C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP68732D DE628393C (en) Rolling mill for expanding hollow bodies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP68732D DE628393C (en) Rolling mill for expanding hollow bodies

Publications (1)

Publication Number Publication Date
DE628393C true DE628393C (en) 1936-04-02

Family

ID=7391284

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP68732D Expired DE628393C (en) Rolling mill for expanding hollow bodies

Country Status (1)

Country Link
DE (1) DE628393C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0178477A1 (en) * 1984-10-19 1986-04-23 Petersen, Ulrich Dr.-Ing. E.h. Dipl.-Ing Method for producing seamless steel tubes with a great diameter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0178477A1 (en) * 1984-10-19 1986-04-23 Petersen, Ulrich Dr.-Ing. E.h. Dipl.-Ing Method for producing seamless steel tubes with a great diameter

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