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Effect of technological parameters on structure of castings made from IN-713C nickel alloy

Binczyk F., Śleziona J., Szymszal J., Gradoń P.

Archives of Foundry Engineering

2011

Vol. 11, iss. 4

9-12

The work includes studies to determine the significance of the effect of selected technological parameters of moulding and casting conditions on the macrostructure of IN-713C cast nickel alloy. Two-level, fractional 24-1 experiment was carried out, requiring eight experiments. The evaluation covered the number of grains per 1mm2 of the sample surface, the average grain surface area, and the shape index. Macrostructure of test castings indicates a positive effect of combined surface and bulk inoculation treatment, with the effect of surface inoculation prevailing as regards its importance. Statistically significant effect on the number and surface of grains have in descending order: surface modification, bulk modification and temperature of alloy pouring.

Ultrasonic assessment of shape index and number of graphite precipitations in spheroidal cast iron manufactured in the foundry METAL-ODLEW Sp.J.

Orłowicz W., Tupaj M., Mróz M., Guzik E., Nykiel J., Zając A., Piotrowski B.

Archives of Foundry Engineering

2009

Vol. 9, iss. 4

179-182

This study presents the results of testing the shape index, number of graphite precipitations, and longitudinal ultrasound wave velocity with wedge castings used for production of samples for the assessment of mechanical characteristics. To differentiate values of the parameters, the castings were made at the same time as the production castings. The data obtained were used to establish the relationship between the ultrasonic wave velocity cL, the shape index SS and the number of graphite precipitation NA.

Influence of wall thickness of spheroidal cast iron, manufactured in the foundry METAL-ODLEW Sp.J., on its graphite shape index and ultrasonic control index

Orłowicz W., Tupaj M., Mróz M., Guzik E., Nykiel J., Zając A., Piotrowski B.

Archives of Foundry Engineering

2009

Vol. 9, iss. 4

173-178

This work presents the results of ultrasonic evaluation of the microstructure of spheroidal cast iron manufactured under production conditions at the foundry of Metal Odlew Sp.J. Evaluation of ultrasonic control index sensitiveness to changes of graphite shape index Ss of spheroidal cast iron (type 500-7), utilized modelled stepped castings. The relationship was determined between the shape index of graphite precipitation Ss and the velocity of longitudinal ultrasonic wave cL.