Naslov
MACHINING OF DUPLEX STEEL IN IMPELLER PRODUCTION

Autori
Stoić, Antun ; Kopač, Janez ; Samardžić, Ivan ; Duspara, Miroslav ; Tadijanović, Adam

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Computer integrated manufacturing and high speed machining / Abele, Eberhard ; Udiljak, Toma ; Ciglar, Damir - Zagreb : Hrvatska udruga proizvodnog strojarstva (HUPS), 2011, 237-240

ISBN
978-953-7689-01-8

Skup
CIM 2011

Mjesto i datum
Biograd na Moru, Hrvatska, 16.06.2011. - 18.06.2011

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Impeller; duplex steel; TIG process; milling

Sažetak
This paper gives an overview of the machining technology applied in impeller production. The complex geometry of the impeller (thin walls combined with interrupt cutting condition) and the tolerance demands make this production challenging. Raw material was casted duplex steel X2CrNiMoN 26 7 4 (W.Nr. 1.4469) with high content of Mo. During the casting process of duplex steel it is necessary to ensure high purity of melts, as well as a small scattering of alloying elements. The problem facing this production was impurity (sand) on the impeller blades. Before the machining, the impurity has to be removed by milling or grinding and after that filled with welding technology. TIG process, with wire thickness of Φ=2.4mm was performed. Before welding it is necessary preheat the material up to 120-150 ˚C.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

POVEZANOST RADA