FORGING ON HAMMER OF RIM FORGING FROM TITANIUM ALLOY Ti6Al4V

This paper presents the research results of hammer forging process of a plane wheel rim forging from titanium alloy Ti6Al4V. The research works were divided into two stages. The first concerned the theoretical analysis based on numerical simulations of the worked out forging technology. Distribution...

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Veröffentlicht in:Archives of metallurgy and materials 2012-01, Vol.57 (4), p.1239-1246
Hauptverfasser: Gontarz, A, Pater, Z, Drozdowsk, K
Format: Artikel
Sprache:eng
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Zusammenfassung:This paper presents the research results of hammer forging process of a plane wheel rim forging from titanium alloy Ti6Al4V. The research works were divided into two stages. The first concerned the theoretical analysis based on numerical simulations of the worked out forging technology. Distributions of temperature, strain, damage criterion according to Cockroft-Latham, material flow kinematics and force parameters were evaluated. It was stated that the danger of overheating and material cracking in the forging does not exist. Large force values present in the process means that problems with tools durability may appear. Satisfactory results of the theoretical analysis provided the basis for conducting the second stage of the research works, that is experimental tests in industrial conditions. After dies making forging tests were made in one Polish forging plants, in which a product of good quality was obtained. Manufactured forgings were free from cracks, shape faults and fulfilled requirements concerning mechanical properties.Original Abstract: W artykule przedstawiono wyniki badan procesu kucia na mlocie odkuwki felgi kola samolotowego ze stopu tytanu Ti6Al4V. Prace badawcze podzielono na dwa etapy. Pierwszy dotyczyl analizy teoretycznej opartej na symulacjach numerycznych opracowanej technologii kucia. Dokonano oceny rozkladu temperatury, odksztalcenia, kryterium zniszczenia wedlug Cockrofta-Lathama, kinematyki plyniecia materialu i parametrow silowych. Stwierdzono, ze nie zachodzi niebezpieczenstwo przegrzania i pekania materialu w odkuwce. Duze wartosci sil wystepujacych w procesie swiadcza, o mozliwosci wystepowania problemow z trwaloscia. narzedzi. Pozytywne wyniki analizy teoretycznej daly podstawe do przeprowadzenia drugiego etapu badan tj. prob doswiadczalnych w warunkach przemyslowych. Po wykonaniu matryc przeprowadzono proby kucia w jednym z polskich zakladow kuzniczych, w ktorych uzyskano wyrob charakteryzujacy sie dobra jakoscia. Wykonane odkuwki pozbawione byly pekniec, wad ksztaltu i spemialy wymagania odnosnie wlasnosci mechanicznych.
ISSN:1733-3490
DOI:10.2478/v10172-012-0138-9