Structure of ductile iron in thin walled castings

• Autorzy: Górny M.
• Języki publikacji: EN

Abstrakty

EN

It this work it has been shown that it is possible to produce thin wall ductile iron (TWDI) castings with considerably length using Archimedes spiral with wall thickness of 1, 2 and 3 mm. Inmould technique was used to produce TWDI. It has been estimated castability and metallographic investigations were made using different moulding materials. From castability measurements result that it is possible to obtain thin wall ductile iron castings with wall thickness down to 1 mm with castability of 200 mm. Using mould with small ability to absorb heat castability increases twice. At wall thickness equal 3 mm castability reaches 1000 mm and using LDASC sand its value increases to over 1500 mm. Structure parameters for different wall thickness and moulding materials (graphite nodule count, ferrite and cementite fraction) are plotted versus distance from the beginning of spiral. It is shown strong influence of LDASC sand (material with small ability to absorb heat) on structure parameters (N_F, V_f i V_C) revealing gradient character of TWDI.

Słowa kluczowe

EN

ductile iron; thin wall castings; Archimedes spiral; castability

PL

żeliwo sferoidalne; odlewanie cienkościenne; spirala Archimedesa; lejność

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2007
• Tom: Vol. 7, iss. 4
• Strony: 73--78
• Opis fizyczny: Bibliogr. 23 poz., rys., tab., wykr.

Twórcy

autor

Górny M.

• AGH - University of Science and Technology, Reymonta 23, 30-059 Kraków, Poland,

Bibliografia

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