A method for sinking of a tube by means of a drawing die

摘要

A method for sinking of a tube (10) by means of a drawing die (13), in which, when sinking of the tube (10) to a tensile forces by the effective drawing ring which have passed transversely cut drawing section (22) of the tube (10) and pressure forces on a not yet by the effective drawing ring which have passed transversely cut blank section (11) of the tube (10) is to be exerted, wherein the tensile forces of a in the tube inserted mandrel (16) is to be exerted, the form of - or non-positive manner with a front reduced portion (12) of the tube is joined, the front reduced portion (12) of the tube (10) before the stretching of the tube (10) is reduced.