DE675180C - Tube reducing mill without mandrel, consisting of a row of rolls arranged one behind the other and offset from one another - Google Patents

Tube reducing mill without mandrel, consisting of a row of rolls arranged one behind the other and offset from one another

Info

Publication number
DE675180C
DE675180C DEM125550D DEM0125550D DE675180C DE 675180 C DE675180 C DE 675180C DE M125550 D DEM125550 D DE M125550D DE M0125550 D DEM0125550 D DE M0125550D DE 675180 C DE675180 C DE 675180C
Authority
DE
Germany
Prior art keywords
offset
mandrel
behind
row
another
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
DEM125550D
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.)
Maschinenfabrik Sack GmbH
Original Assignee
Maschinenfabrik Sack GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Sack GmbH filed Critical Maschinenfabrik Sack GmbH
Priority to DEM125550D priority Critical patent/DE675180C/en
Priority claimed from GB3367233A external-priority patent/GB423537A/en
Priority to US724968A priority patent/US2170513A/en
Application granted granted Critical
Publication of DE675180C publication Critical patent/DE675180C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
    • B21B17/14—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling without mandrel, e.g. stretch-reducing mills

Description

Rohrreduzierwalzwerk ohne Dorn, bestehend aus einer Reihe hintereinander und versetzt zueinander angeordneter Walzensätze Bei den Rohrreduzierwalzwerken, in denen ohne Anwendung eines Dornes mittels mehrerer hintereinander angeordneter Walzensätze der Durchmesser der Rohre vermindert wird, sind bisher die Walzen bei allen Walzensätzen oder bei allen geradzahligen und zu diesen versetzten ungeradzahligen Walzensätzen in gleicher Weise angeordnet. Infolgedessen werden die Rohre nicht an allen Stellen des Umfanges gleichmäßig beeinflußt, und es ergibt sich eine Eckenbildung im Innern der Rohre.Tube reducing mill without mandrel, consisting of a row one behind the other and staggered sets of rolls In the tube reducing mills, in those without the use of a mandrel by means of several one behind the other Roll sets the diameter of the tubes is reduced, so far the rolls are at all sets of rollers or all even-numbered and odd-numbered ones offset from them Sets of rollers arranged in the same way. As a result, the pipes won't influenced equally at all points of the circumference, and there is a corner formation inside the pipes.

Um diesen Übelstand zu beseitigen, ist nach der Erfindung das kohrreduzierwalzwerk so ausgebildet, daß beim Durchlaufen der zu reduzierenden Rohre jeder Walzensatz eine andere Stellung zum Rohr einnimmt als die anderen. Zu dem Zweck sind entweder die Walzensätze fortlaufend gegeneinander versetzt, oder es ist das Walzwerk mit einer an sich bekannten Einrichtung (Drallbüchse, schräg gestellte Arbeitswalzen o. dgl.) versehen, welche das Rohr während des Durchlaufes dreht und damit die Verteilung der Rohrbeeinflussung auf den Umfang bewirkt.To eliminate this drawback, the Kohrreduzierwalzwerk is according to the invention designed so that when passing through the tubes to be reduced each set of rollers assumes a different position to the pipe than the others. For the purpose are either the sets of rolls continuously offset against each other, or it is the rolling mill with a device known per se (twist sleeve, inclined work rolls o. The like.) Provided, which rotates the pipe during the run and thus the distribution the pipe influence on the circumference causes.

Beim Auswalzen von Rohren auf einem Dorn mittels mehrerer hintereinander angeordneter Walzensätze werden in jedem Walzensatz zwei Stellen des Rohrumfanges zwischen dem Dorn und den Walzen gestreckt. Es müssen hierbei somit die einzelnen Stellen des Rohrumfanges nacheinander von den verschiedenen Walzensätzen ausgewalzt werden, und deshalb hat man bei diesen Walzwerken mit Dorn die Walzensätze schon gegeneinander versetzt.When rolling out pipes on a mandrel by means of several in a row arranged roller sets are in each roller set two places on the pipe circumference stretched between the mandrel and the rollers. It must therefore be the individual Place the pipe circumference successively rolled out by the various sets of rollers and that's why you already have the sets of rolls in these rolling mills with mandrels offset against each other.

In der Zeichnung ist in Fig. z '- der Querschnitt eines mit den bekannten Reduzierwalzwerken bearbeiteten Rohres dargestellt, welcher die Eckenbildung im Rohrinnern zeigt.In the drawing is in Fig. Z '- the cross section of one with the known Reducing mills machined tube shown, which the corner formation in Shows the inside of the pipe.

Fig.2 zeigt beispielsweise eine bisher übliche Anordnung eines Reduzierwälzwerkes mit acht Walzensätzen von je zwei Walzen, bei welchem die einzelnen Walzensätze jeweils um 9o° versetzt angeordnet sind.FIG. 2 shows, for example, a previously common arrangement of a reducing roller mechanism with eight roller sets of two rollers each, in which the individual roller sets are each arranged offset by 9o °.

Fig.3 zeigt eine Anordnung gemäß der Erfindung. Hier sind die Walzensätze fortlaufend gegeneinander versetzt. Bei der Durchführung dieser Verteilung auf alle Walzensätze wird jede Stelle des Rohrumfanges nur einmal durch einen Kalibersprung geführt. In gleicher Weise kann auch die Versetzung der Kaliber erfolgen, die aus mehr als zwei Walzen gebildet sind.3 shows an arrangement according to the invention. Here are the roller sets continuously offset against each other. In carrying out this distribution on everyone Each point of the pipe circumference is set only once by a caliber jump guided. In the same way, the calibers can also be transferred from more than two rollers are formed.

Fig. q. zeigt die Anordnung schräg gestellter Arbeitswalzen, welche zur Drehung des Rohres während des Durchlaufes beispielsweise benutzt werden können.Fig. Q. shows the arrangement of inclined work rolls, which can be used, for example, to rotate the tube during the run.

Claims (1)

PATENTANSPRUCH: Rohrreduzierwalzwerk ohne Dorn, bestehend aus einer Reihe hintereinander und versetzt zueinander angeordneter Walzensätze, dadurch gekennzeichnet, daß zur Vermeidung der Eckenbildung im Innern des Rohres jeder Walzensatz so versetzt zu dem vorhergehenden liegt, daß die Kalibersprünge in bezug auf den Rohrumfang fortlaufend in verschiedenen Ebenen liegen oder eine Einrichtung zum Drehen des Rohres während seines Durchlaufen durch die Walzensätze üblicher Art (Drallbüchse, schräg gestellte Arbeitswalzen o. dgl.) vorgesehen ist.PATENT CLAIM: Tube reducing mill without mandrel, consisting of one Row of roller sets arranged one behind the other and offset to one another, characterized in that that in order to avoid the formation of corners inside the tube, each set of rollers is offset in this way to the preceding is that the caliber jumps in relation to the pipe circumference continuously lie in different planes or a device for rotating the Pipe during its passage through the roller sets of the usual type (swirl sleeve, inclined work rolls o. The like.) Is provided.
DEM125550D 1933-11-11 1933-11-11 Tube reducing mill without mandrel, consisting of a row of rolls arranged one behind the other and offset from one another Expired DE675180C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DEM125550D DE675180C (en) 1933-11-11 1933-11-11 Tube reducing mill without mandrel, consisting of a row of rolls arranged one behind the other and offset from one another
US724968A US2170513A (en) 1933-11-11 1934-05-10 Apparatus for reducing tubes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEM125550D DE675180C (en) 1933-11-11 1933-11-11 Tube reducing mill without mandrel, consisting of a row of rolls arranged one behind the other and offset from one another
GB3367233A GB423537A (en) 1933-11-30 1933-11-30 Improvements in and relating to methods of rolling tubes and apparatus therefor

Publications (1)

Publication Number Publication Date
DE675180C true DE675180C (en) 1939-05-02

Family

ID=25988431

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM125550D Expired DE675180C (en) 1933-11-11 1933-11-11 Tube reducing mill without mandrel, consisting of a row of rolls arranged one behind the other and offset from one another

Country Status (2)

Country Link
US (1) US2170513A (en)
DE (1) DE675180C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE940524C (en) * 1953-10-04 1956-03-22 Hubert Sassmann Roll calibration
DE948592C (en) * 1954-08-20 1956-09-06 Hubert Sassmann Process for reducing rolling longitudinally welded pipes
DE1179172B (en) * 1959-02-17 1964-10-08 Mannesmann Meer Ag Continuous rolling mill, especially tube reducing mill
DE102009010414A1 (en) * 2009-02-26 2010-09-09 Kocks Technik Gmbh & Co. Kg Roll stand, rolling train and use of the rolling stand and / or the rolling mill for reducing bars and / or tubes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3137926A (en) * 1957-04-02 1964-06-23 Fairey Eng Formation of fins on metal bar or tube stock

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE940524C (en) * 1953-10-04 1956-03-22 Hubert Sassmann Roll calibration
DE948592C (en) * 1954-08-20 1956-09-06 Hubert Sassmann Process for reducing rolling longitudinally welded pipes
DE1179172B (en) * 1959-02-17 1964-10-08 Mannesmann Meer Ag Continuous rolling mill, especially tube reducing mill
DE102009010414A1 (en) * 2009-02-26 2010-09-09 Kocks Technik Gmbh & Co. Kg Roll stand, rolling train and use of the rolling stand and / or the rolling mill for reducing bars and / or tubes
DE102009010414B4 (en) * 2009-02-26 2014-04-10 Kocks Technik Gmbh & Co. Kg Rolling mill and use of rolling mill for reducing bars and / or tubes

Also Published As

Publication number Publication date
US2170513A (en) 1939-08-22

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