THE ASSESSMENT OF CHANGES OF THE STRUCTURE OF DUCTILE CAST IRON DEPENDING ON THE TIME AND TEMPERATURE OF THE METALLURGIC PROCESS

The results of technological tests (chemical composition, solidification curves, microstructure) of ductile cast iron smelting in the Foundry Research Institute in an induction furnace. In the case of crystallization of spheroidal graphite no long...

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THE STUDY OF FACTORS ALTERING PHYSICAL AND CHEMICAL STATE OF LIQUID CAST IRON AND A SELECTION OF THE MATERIAL PROPERTIES

The study was conducted to determine the effect of spheroidization and modification method, of the CE value, the content of magnesium and lanthanum on susceptibility to form shrinkage defects, structure and resistance properties of ductile cast ir...

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Optimization of Ni and Cu additions in ADI cast iron in respect of cast cooling rate

The study analyzes the effect of Ni and Cu additions on the mechanical properties of ADI cast iron in casts with different wall thickness values. The applied experiment plan included the use of combinations of the Ni addition in the amount of 0.5%...

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A comparison of the oxygen, nitrogen and hydrogen content in ductile iron castings and their effect on microstructure and mechanical properties

Two different spheroidization methods were compared in terms of the effect they may have on gas content (oxygen, nitrogen and hydrogen) in ductile iron castings and process efficiency.Two methods of cast iron treatment were investigated, i.e...

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Simulation analysis of liquid metal flow through an innovative reaction chamber (and its shape optimization) used in ductile iron production technology

Ductile iron castings are widely used in many industrial branches because of their mechanical properties. The production process of such a grade of cast iron requires the maintenance of the technological regime and the purity of initial charge mat...

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