Franz-Josef Lenze, Sascha Sikora, Janko Banik, Oliver Straube:
Hot forming - new potentials for innovative manufacturing
Hot forming, process parameter, part analysis, partial austenitizing, thermal imaging
Hot forming has established itself as an important manufacturing technology for body-in-white (BIW) parts. The main advantage is the ultra-high strength of the parts combined with excellent accuracy after the forming step. Hence, adequate process control is indispensable to ensure appropriate part properties. Thermal imaging represents a suitable implement for process monitoring and the understanding of the various parameters influencing temperature behaviour. This device supplies qualitative indications of the thermal conditions with part or tool, especially for R&D activities. Further investigations take into account the part´s strength. A calculated process modification of the strength property class can be adapted to the part demands, and appropriate annealing conditions offer a huge number of feasible strength levels to the family of manganese boron steels. By changing the chemical analysis of the steel a further application for adapted component properties is possible. This causes an increased strength level in the press hardened parts. Thus, and by using these steel grades, it is possible to boost the weight reduction of the body-inwhite structure.
In addition, make sure to read these articles:
Updated: Neues Fügeverfahren revolutioniert Stahlverbindungen
Study on the influence of process parameters on mechanical properties and pitting corrosion of dissimilar AISI 304 to AISI 4140 continuous drive friction welds
Characterisation of laser-beam treated stainless steels
German researchers received Niobium Award for a new high strength alloy concept for helically welded steel pipes
Influence of post weld heat treatment on the microstructure and mechanical properties of maraging steel electron beam weldments
New developments in welding technology, profound base to enhance chances
Influence of parent metal mechanical properties on those of the different ultra-high-strength steel electron beam welds
Hot forming - new potentials for innovative manufacturing
Variation in surface residual stress of C-Mn rail with usage
Improvement of fatigue resistance of low-nickel stainless steels for biomedical applications compared to CoCr-alloys
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