Lehrstuhl für Fertigungstechnologie, Universität Erlangen-Nürnberg

Use of process adapted aluminium blanks for the manufacture of car body parts

Project Status: finished


The goal of the transfer project T-B4 is to qualify Tailored Heat Treated Blanks THTB for the application under quasi-series conditions. By using THTB the formability of aluminum blanks can be significantly enhanced, which allows the reduction of deep drawing steps as well as the integration of parts without abandoning high process reliability. The research activities focus on complex car body parts made of fast-hardenable aluminum alloys. >br< Within the scope of the present project phase the impact of short-term, local heat treatments on current PX aluminum alloys and on the coil lubricant Drylube E1 was analyzed. Based on these studies the interdependencies between THTB and the process steps for the car body manufacturing succeeding the forming operation were examined and a process window for the THTB design under quasi-series conditions was determined. >br< Moreover, principles of the THTB design for the manufacturing of critical aluminum car body parts were elaborated. Based on these design principles a THTB for the manufacture of a demonstrator part exhibiting a critical final geometry, an automobile B-pillar, was created; the design of the THTB was accomplished using finite element analysis. For the heat treatment of this THTB an appropriate heating station was designed and setup.

Letztes Update: 01.01.2010