Naslov
The casting powder FT2

Autori
Radović, Nikol ; Novosel - Radović, Vjera ; Marjanović, Tihana

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstract of the 27nd Slo_cro Crystallographic Meeting / - Ljubljana : Slovenian Crystalographic Society, Faculty of Chemistry and Chemical Technology University of Ljubljana, 2019, 61-61

Skup
27th Slovenian-Croatian Crystallographic Meeting (SCCM 2019)

Mjesto i datum
Rogaška Slatina, Slovenija, 19.06.2019. - 23.06.2019

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
seamless tubes, casting powder, x - ray diffraction, electron micrographs, inclusion, erosion

Sažetak
During ingot casting for the production of seamless tubes surface with casted powder some surface defect were noted. Defect often transfers to tubes causing the appearance of cracks during the production and/ or use. For determination the cause the phase composition casting powder before and during its successive heating up to 1200°C were observed. Also, refractoriness, sludges, macro and micro inclusion produced during the casting were observed. For investigation samples were taken directly in powdered form or mechanically in the place of overflow of ingot, tubes or immersed tundish. Diffraction patterns of prepared samples were recorded photographically with PW 1024 Debye Scherrer camera (x – ray tube, cobalt 10 mA/ 25 KV, 2 hours), secondary electron micrographs and emitted characteristics x – rays. The results of investigation of cause of surface defects show that they are result of the erosion of chamotte in the channels and tundish immersed and casting powder which only partial converges of the surface of the themelt.

Izvorni jezik
Engleski

Znanstvena područja
Matematika, Kemija

POVEZANOST RADA