Wyniki wyszukiwania - BazTech

Ograniczanie wyników

2 Archives of Foundry Engineering

2 2009

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: graphite precipitations

Sortuj według:

Ogranicz wyniki do:

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.

Assessment of the influence of magnesium content on the shape and amount of graphite precipitation in spheroidal cast iron manufactured by Metal-Odlew s.c.

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

Archives of Foundry Engineering

2009

Vol. 9, iss. 1

117-120

The study presents the influence of time on cast iron spheroidisation, modification of the magnesium content in the alloy, and the influence of the magnesium content on the shape and number of graphite precipitations. For one particular set of production conditions, it was observed that 17 minutes after completing the modification and spheroidisation procedure, the magnesium content had decreased from 0.070% to 0.040%. This resulted in a decrease in the graphite precipitation shape index Ss from 0.081 to 0.067, as well as a decrease in the average number of graphite precipitations NA from 568 mm-2 to 305 mm-2.