Article (Scientific journals)
Series production of thixoformed steel parts
Behrens, B. A.; Fischer, Dirk; Haller, B. et al.
2006In Solid State Phenomena, 116-117, p. 686-689
Peer reviewed
 

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Keywords :
thixoforming; process automation; thixotools
Abstract :
[en] In recent years several attempts were made to transfer the thixoforming technology of steel parts into industrial applicable processes. This paper gives an overview about the progress of a European consortium that established a fully automated thixoforming process for the series production of automotive steel parts. Due to the multi-faceted nature of this technology, problems concerning the development of suitable steel grades and tool materials as well as the development and application of an inductive heating system, a handling unit and of a complex forming tool had to be solved. Besides the development of adapted steel grades and the inductive heating, the handling of the semi solid billets plays a special role because during the manipulation of the parts from the heating station into the tool a loss of heat is unavoidable. Furthermore, scaling of the parts must be prevented. By means of a fully automated process line existing constraints were reduced and the forming process is kept reproducible. Improved silicon nitride composites have been developed as a tool material, which show good mechanical properties in combination with an acceptable chemical stability at the occurring process temperatures as well as in contact with semi solid steel. Basing on the practical experience a comparison of the thixoforming technology to existing processes and an outlook for the ftiture are, given.
Disciplines :
Physics
Materials science & engineering
Author, co-author :
Behrens, B. A.
Fischer, Dirk
Haller, B.
Rassili, Ahmed ;  Université de Liège - ULiège > Science des matériaux métalliques
Pierret, Jean-Christophe ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Science des matériaux métalliques
Klemm, H.
Studinski, A.
Walkin, B.
Karlsson, M.
Robelet, M.
Natale, L.
Alpini, F.
Language :
English
Title :
Series production of thixoformed steel parts
Publication date :
2006
Journal title :
Solid State Phenomena
ISSN :
1012-0394
eISSN :
1662-9779
Publisher :
Trans Tech Publications Ltd, Stafa-Zurich, Switzerland
Special issue title :
Semi-Solid Processing of Alloys and Composites
Volume :
116-117
Pages :
686-689
Peer reviewed :
Peer reviewed
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