Verfahren zum Innenhochdruck-Umformen zweier oder mehrerer Hohlkörper mit jeweils zumindest einer Öffnung, insbesondere Metallrohre oder Metallhohlprofile

摘要

First and second hollow bodies each having at least one opening are joined by first forming a fracture zone in a joint region of the first body and then juxtaposing the bodies in a closed cavity of an internal high-pressure shaping tool with the second body spaced from and open toward the fracture zone of the first body. The first body is then internally pressurized with a hydraulic medium until a burst pressure at the fracture zone is exceeded and the first body ruptures and is deformed outward at the fracture zone into engagement with the second body. The medium then flows through the ruptured fracture zone into the second body.