Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Overlap ratio in wire- and powder-based laser metal deposition of H11 + Nb for hot forging dies

 
: Teli, M.; Klocke, F.; Arntz, K.; Winands, K.; Klingbeil, N.; Arrizubieta, J.I.

:

Kong, M.:
Manufacturing Engineering and Process VII : The 7th International Conference on Manufacturing Engineering and Process (ICMEP 2018)
Dürnten: Trans Tech Publications, 2018 (Solid state phenomena 278)
ISBN: 978-3-0357-1370-1
ISBN: 978-3-0357-2370-0
ISBN: 978-3-0357-3370-9
pp.28-38
International Conference on Manufacturing Engineering and Process (ICMEP) <7, 2018, Barcelona>
English
Conference Paper
Fraunhofer IPT ()

Abstract
AISI H11 tool steel is a complex tool steel alloy used to manufacture hot forging dies. These dies however have a limited life, which depends upon the working conditions, the tool design, the heat treatment, and the quality of tool steels. In this paper, a novel wire- and powder-based laser metal deposition (WP-LMD) process was investigated to deposit H11 wire and niobium (Nb) powder simultaneously and develop a coating on existing forging dies for enhancing their life. The main aim was the development of a novel WP-LMD process, and consequently a new H11 tool steel with improved toughness and hardness. The developed WP-LMD process was later implemented to build a multilayer block made of the modified H11 tool steel. The overlap ratio was optimized in both, horizontal and vertical, directions, and were found to be 30% and 20% respectively in order to achieve a fully dense coating and avoid pores and unmelted Nb particles. The potential of the WP-LMD can be used to fabri cate an outer layer of the modified H11 tool steel with improved toughness and hardness, which ultimately enhances the life of hot forging.

: http://publica.fraunhofer.de/documents/N-515945.html