公开(公告)号：US20230130543A1

公开(公告)日：2023-04-27

申请号：US17914138

申请日：2021-03-26

Applicant: SMS group GmbH

Inventor： Hardy JUNGEN ,  Ulf SERODE ,  Karl THOELKE

IPC: B21C1/24 ,  B21C3/16

Abstract: To provide methods, apparatuses and drawing mandrels in which the shaping process can be monitored as closely as possible, a drawing machine and a drawing method manufactures or processes tubes, which extend in the direction of longitudinal extent, from a semi-manufactured product, wherein the drawing machine includes a drawing device for drawing a hollow workpiece formed by the tube and the semi-manufactured product in the direction of longitudinal extent, a drawing ring and a drawing mandrel and acts on the workpiece in a shaping manner via the drawing mandrel and the drawing ring while the workpiece is drawn by the drawing device around the drawing mandrel and through the drawing ring. A sensor is located on the drawing mandrel, or physical properties are measured in the interior of the workpiece and/or on the drawing mandrel using a sensor on the drawing mandrel.