Analyse eines durch das Co-Spray-Verfahren hergestellten Werkzeuges zur Warmumformung

Autor:	Ekkard Brinksmeier, V. Uhlenwinkel, O. Grohmann, Alwin Schulz, C. Meyer, Carsten Heinzel
Rok vydání:	2014
Předmět:	Materials science Machinability Metallurgy Alloy Metals and Alloys Welding engineering.material Spray forming Microstructure Industrial and Manufacturing Engineering law.invention Spray nozzle Hot working law Materials Chemistry engineering Arc welding
Zdroj:	HTM Journal of Heat Treatment and Materials. 69:235-240
ISSN:	2194-1831 1867-2493
DOI:	10.3139/105.110232
Popis:	In the industrial manufacturing chain of roller bearings the hot bars are subsequently sheared into billets and these are automatically transported to the first forming stage of the press. Normally the cobalt-based hard-facing alloys for the blades are deposited by manual metal arc or plasma transfer arc welding. In the research work presented here, the hard-facing alloys are produced by spray forming to increase the life time of the tool. Long life time is expected because of the advantages of spray forming: homogeneity of the microstructure, a low segregation and absence of a heat affected welding zone. For this purpose a bi-metal composite is deposited in a co-spray process to combine the hard-facing alloy layer with a hot working steel to insert the blade into a carrier. The interface between the two different materials was analyzed in terms of porosity, hardness, adhesive strength and machinability to describe the new composite material.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fed0d966a7c5dea099872a0fc0ae956b https://doi.org/10.3139/105.110232 Zobrazit plný text záznamu