Continuous Modification of Cast Iron by the FLOTRET Method
Journal Title: Archiwum Odlewnictwa - Year 2012, Vol 12, Issue 3
Abstract
Increasing demands on the utility properties of materials used for castings have led to the production of cast iron with a modified shape of graphite, where the required properties are achieved by a change in graphite shape, its size and layout, and a change in the basic structure of the metal. This paper is focused on the continuous method of producing spheroidal graphite FLOTRET. In the introductory section is summarized the theoretical foundations of the secondary treatment of cast irons, especially the FLOTRET flow method, describes the advantages and disadvantages of the method. The practical part is divided into laboratory and operational tests. Laboratory experiments were conducted on a laboratory-type modifier FLOTRET chamber, which was designed and hydraulically optimized. Experiments were focused on the effects of pressure altitude and amount of modifier on the residual values of magnesium, as conditions for a successful modification. The method was tested in two foundries under operating conditions and in one of them was observed a long-term modification process.
Authors and Affiliations
A. Hanus, P. Hanusová
Effect of the concentrated heat flow treatment on the structure and the antiwear properties of cast iron
The influence of modes of surface fusion by electric arc plasma (GTAW method) on the hardness and wear-resistance of plain cast iron was studied. A possible mechanism of structural rearrangement in the processed material...
Influence of the microstructure and loads on tribological properties of G155CrNiMo4-3-3 cast steel
Materials for mill rolls, fulfilling high requirements due to difficult exploitation conditions, are cast steels of adamite grade. Those are cast steels of pearlitic matrix with uniformly distributed cementite precipitat...
Control of cast iron and casts manufacturing by Inmold method
In this paper the usability of cast iron spheroidizing process in mould control by ATD method as well as by ultrasonic method were presented. Structure of instrumentation needed for control form performance of cast iron...
Effect of dispersion hardening on impact resistance of EN AC-AlSi12Cu2Fe silumin
Development of modern technology have generated supply of better and better, more resistant structural materials not attainable earlier. Weight of metal structures is of a great importance, and as a consequence, also wei...
Influence of refining process on the porosity of high pressure die casting alloy Al-Si
This study presents research results of the influence that refining and transfer of AlSi12S alloy on the porosity of high pressure diecastings. Tests were conducted under production conditions of Die-casting Foundry META...