Structure Distribution in Precise Cast Iron Moulded on Meltable Model

Abstract

Topic of this work is to compare metalurgy of cast irons poured into sand moulds and into shell molds at IEG Jihlava company and from it following differencies in structures of thin- and thick-walled castings. This work is dealing with investigation and experimental measurement on surfaces and sections suitable thin- and thick-walled investment castings at IEG Jihlava. Cast irons with flake graphite (grey cast iron) and cast irons with spheroidal graphite (ductile cast iron). Both mechanical and physical properties are determined using calculations from as measured values of wall thicknesses L and Lu, Vickers hardness and remanent magnetism. Measurement results are discussed, findings are formulated and methods for castings metallurgical quality improvement are recommended finally.

Inclusion characteristics of stainless steel castings

“…For example, the lost wax process is widely used to produce parts with intricate geometry and internal cavities. [25][26][27][28][29] In the present study, the characteristics of inclusions (such as morphology, number density (ND), size and composition) in steel samples taken at different temperatures and after various holding times were systematically investigated using microanalysis together with thermodynamic modelling.…”