RESEARCHES REGARDING THE ALLOING WITH IRON OF THE SILUMINS AT THE ELECTRIC ARC LEVEL

摘要

In this paper is presented the utilization of the electric arc for the achievement of some alloyed zones with special properties at high and tribological temperatures.For the optimization of the compound on iron-base distribution and morphology from the base matrix and also for the optimization of the geometrical shape of the alloyed zone X, are used three M.I.G alloing conditions.The assimilation mode of the iron powder at the molten bath level is studied by chemical analysis, hardness and metallographic tests. Researches have evidenced the possibility of direct alloing with iron of the Al-alloys.