Deposition welding of hot forging dies using nanoparticle reinforced weld metal

verfasst von

Bernd Arno Behrens, Timur Yilkiran, Sörn Ocylok, Andreas Weisheit, Ingomar Kelbassa

Abstract

In the application field of forging, the form-giving tool components are subject to process-related severe environmental conditions, such as high mechanical loads acting simultaneously with high tribological and thermal charges. Due to high machine hour rates as well as increasing environmental requirements in terms of energy consumption, wear protection methods and suitable repair measures for forging tools become more and more important. Laser deposition welding represents an established process for the repair of complex shaped surfaces. A new approach is the addition of nano-sized ceramic particles to improve the mechanical properties. The main idea is to reduce the grain size of the cladded layers by adding nano-sized nuclei. A fine grained microstructure will improve strength as well as ductility and fatigue resistance. Furthermore small hard particles can improve the wear resistance without affecting the friction of the surface. After the cladding process the surface has to be finished usually by turning, milling and grinding operations. Within the presented paper the potential of nanoparticle-reinforced deposition welding with regard to increasing the wear resistance of forging dies will be examined. First, the process of nanoparticle-reinforced deposition welding will be presented. Afterwards it will be shown that yttrium oxide, titanium carbide and tungsten carbide nanoparticles in an AISI H10 matrix material will influence the friction coefficient between forging tool and material as well as the wear properties.

Organisationseinheit(en)

Institut für Umformtechnik und Umformmaschinen

Externe Organisation(en)

Fraunhofer-Institut für Lasertechnik (ILT)
Rheinisch-Westfälische Technische Hochschule Aachen (RWTH)

Typ

Artikel

Journal

Production Engineering

Band

8

Seiten

645-658

Anzahl der Seiten

14

ISSN

0944-6524

Publikationsdatum

26.06.2014

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Maschinenbau, Wirtschaftsingenieurwesen und Fertigungstechnik

Ziele für nachhaltige Entwicklung

SDG 7 – Erschwingliche und saubere Energie

Elektronische Version(en)

https://doi.org/10.1007/s11740-014-0562-y (Zugang: Geschlossen)