DE607288C - Process for rolling tubes in the pilgrim step rolling mill - Google Patents

Process for rolling tubes in the pilgrim step rolling mill

Info

Publication number
DE607288C
DE607288C DEM124015D DEM0124015D DE607288C DE 607288 C DE607288 C DE 607288C DE M124015 D DEM124015 D DE M124015D DE M0124015 D DEM0124015 D DE M0124015D DE 607288 C DE607288 C DE 607288C
Authority
DE
Germany
Prior art keywords
rolling
tubes
pilgrim step
rolling mill
pilgrimage
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
DEM124015D
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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 Mannesmann AG filed Critical Mannesmann AG
Priority to DEM124015D priority Critical patent/DE607288C/en
Application granted granted Critical
Publication of DE607288C publication Critical patent/DE607288C/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
    • B21B21/00—Pilgrim-step tube-rolling, i.e. pilger mills

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Description

Verfahren zum Auswalzen von Rohren im Pilgerschrittwalzwerk Die Erfindung besteht in dem Gedanken, beim Pilgern das Werkstück nach jedem Pilgerschlag um so viel zu drehen, daß die entstehenden Verdickungen nicht in der im Drehsinn folgenden Arbeitszone, sondern erst in der übernächsten oder einer der folgenden Arbeitszonen ausgewalzt werden. Auf diese Weise werden Schwierigkeiten beim Anpilgern vermieden; denn infolge der kleinen Drehwinkel beim Anpilgern kann leicht ein selbsttätiges Zurückdrehen des Werkstückes erfolgen. Insbesondere bei einem Kaliber mit Sprung-, Öffnungs- und Arbeitszonen, wo mit noch geringeren Drehungen des Werkstücks zwischen zwei Pilgerschlägen gearbeitet wird, besteht diese Gefahr. Es sollen dann die verdickten Rohrteile, welche beim ersten Pilgerschlag in seiner Sprung- oder öffnungszone lagen, beim zweiten Pilgerschlag nicht in der nächsten Arbeitsnone ausgewalzt werden, sondern erst in der übernächsten oder einer der folgenden Arbeits-oder Druckzonen. Ist beispielsweise bei Anwendung von vier Arbeitszonen ein normaler Sperrwinkel von 45° vorgesehen, so ist beiAnwendung der Erfindung ein Sperrwinkel von 45 plus 9o° = 135' oder 45 plus 18o'= 225' vorgesehen. Man erhält dann für den Fall, daß beim Anpilgern nur 1/5 des normalen Hubes erreicht wird, beim Vierzonenkaliber eine tatsächlich wirkende Drehung von 27°. Die Gefahr des Zurückschnellens des Werkstückes ist dadurch beseitigt.Method for rolling tubes in the pilgrim step rolling mill The invention consists in the idea of turning the workpiece after each pilgrimage so much that the resulting thickening is not rolled out in the following working zone, but only in the next but one or one of the following working zones will. In this way difficulties in the pilgrimage are avoided; because as a result of the small angle of rotation when approaching the pilgrimage, the workpiece can easily be turned back automatically. This danger exists in particular in the case of a caliber with jump, opening and working zones, where work is carried out with even smaller rotations of the workpiece between two pilgrim strokes. The thickened pipe parts, which were in its jump or opening zone during the first pilgrimage, should not be rolled out in the next working zone during the second pilgrimage, but only in the next but one or one of the following working or pressure zones. If, for example, a normal blocking angle of 45 ° is provided when using four work zones, a blocking angle of 45 plus 90 ° = 135 'or 45 plus 18o' = 225 'is provided when using the invention. In the event that only 1/5 of the normal stroke is reached during the pilgrimage, an actually effective rotation of 27 ° is obtained for the four-zone caliber. This eliminates the risk of the workpiece snapping back.

Claims (1)

PATRldTANSPRUCH: Verfahren zum Auswalzen von Rohren im Pilgerschrittwalzwerk, dadurch gekennzeichnet, daß das Werkstück nach jedem Pilgerschlag um so viel gedreht wird, daß die vorher verdickten Rohrteile erst in der übernächsten oder einer der folgenden Arbeits- oder Druckzonen ausgewalzt werden.PATRIOT CLAIM: Process for rolling tubes in the pilgrim step rolling mill, characterized in that the workpiece is rotated by that much after each pilgrimage becomes that the previously thickened pipe parts only in the next but one or one of the following work or pressure zones are rolled out.
DEM124015D 1933-05-31 1933-05-31 Process for rolling tubes in the pilgrim step rolling mill Expired DE607288C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM124015D DE607288C (en) 1933-05-31 1933-05-31 Process for rolling tubes in the pilgrim step rolling mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM124015D DE607288C (en) 1933-05-31 1933-05-31 Process for rolling tubes in the pilgrim step rolling mill

Publications (1)

Publication Number Publication Date
DE607288C true DE607288C (en) 1934-12-21

Family

ID=7330425

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM124015D Expired DE607288C (en) 1933-05-31 1933-05-31 Process for rolling tubes in the pilgrim step rolling mill

Country Status (1)

Country Link
DE (1) DE607288C (en)

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