The Mechanical Properties of Gray Cast Iron and Metallographic Structure Effect on the Chip Shape

Abstract

The cutting tests were carried out on HT200, HT250 and HT300 cast iron. The effects of the strength, hardness, microstructure, chemical composition of cast iron on chip shape were studied. The results show the relationship of different strength, chip thickness and chip deformation of gray cast iron, in the similar cutting conditions.

Development of a Method for Increasing the Fire Resistance of Cast-iron Structures of Cultural Heritage Sites under Reconstruction

“…The issue of determining the actual fire resistance limit of cast-iron structures remains unresolved to date. This state of the issue is due to the fact that existing methods of testing structures for fire resistance that were proposed by Xiao Bin Huang et al (2011) [15], Hoffstaeter et al (2023) [16], Maraveas et al (2015) [17], and Kodur et al (2020) [24] do not take into account the specific features of cast-iron as a structural material, and there are no methods for calculating the actual fire resistance limit. Kodur et al (2020) [24] reveal the results of the first half of the 20th century work and show that cast-iron structures lose strength to a lesser extent than steel structures when heated.…”

Effect of Heat Retention Time and Pouring Temperature on Graphite Shape and Mechanical Properties of Gray Cast Iron

“…The higher temperature also causes a more stable state, and a higher trend of overcooling of the casting liquid. However, holding too long could lead to an unstable graphitization process [3,4]. When overheated, the amount and the shape of graphite changes.…”

“…This is an undesirable form of graphite that negatively impact the mechanical properties of cast iron since the graphite nests break up the continuous of the cast-iron structure, as also the place that the stress concentrated. Therefore, the cast iron has a low flexural and tensile strength [2][3][4].…”