公开(公告)号：US20180169725A1

公开(公告)日：2018-06-21

申请号：US15576628

申请日：2016-07-04

Applicant: SMS GROUP GmbH

Inventor： Hubert STRANK ,  Peter THIEVEN ,  Helge DAEHNDEL

IPC: B21C45/00 ,  B21B17/04 ,  B21B25/04

CPC classification number: B21C45/00 ,  B21B17/04 ,  B21B23/00 ,  B21B25/04 ,  B21C1/26 ,  B21C3/08 ,  B21C5/003

Abstract: The invention relates to a device and a method for producing a pipe (1) from a hollow block (2) which has an opening (3). The device has a rolling mill (30) for rolling the hollow block (2) via a rolling rod (21) introduced into the opening (3) of the hollow block (2), whereby the pipe (1) is produced. A retaining device (70) for retaining the pipe (1) is provided behind the rolling mill (30), and the device is further designed such that the rolling rod (21) can be drawn out of the pipe (1) after the rolling process while the pipe (1) is retained by the retaining device (70).

公开(公告)号：US20210078058A1

公开(公告)日：2021-03-18

申请号：US17054641

申请日：2019-05-08

Applicant: SMS GROUP GMBH

Inventor： Norbert THEELEN ,  Susanne ZELLER ,  Helge DAEHNDEL ,  Alexander GOHR ,  Peter THIEVEN

IPC: B21B17/14

Abstract: A stretch-reducing mill (1) for producing seamless pipes (R), which comprises a plurality of roll stands (10), which are arranged one after the other in a conveying direction (F) of the pipes (R) and each have three rolls (11) arranged at an angular distance of 120°, wherein the roll stands (10) are divided into at least two groups (A, B) each having at least two roll stands (10); the rolls (11) of adjacent roll stands (10) within a group (A, B) are inclined relative to each other by an intra-group angle αI; and the rolls (11) of the roll stands (10) of adjacent groups (A, B) are inclined relative to each other by a group angle αG that is less than the intra-group angle αI.

公开(公告)号：US20170283897A1

公开(公告)日：2017-10-05

申请号：US15474064

申请日：2017-03-30

Applicant: SMS group GmbH

Inventor： Helge DAEHNDEL ,  Norbert THEELEN

IPC: C21D9/08 ,  B22D13/02 ,  B21B23/00 ,  C21D8/10

Abstract: Sensitive hollow blocks or tubes are elongated in a hot-forming elongator while maintaining, if possible, the internal structure that is present or that forms immediately after casting, and thereby, in the case of suitable method management, even thin-walled tubes or tubes rolled from centrifugally cast hollow blocks can be made available to a sufficiently operationally reliable extent. As a result, for the first time, it is possible for rolled centrifugally cast composite material tubes to be made available and for composite material hollow. blocks produced using centrifugal casting to be utilized for the production of a seamless tube.