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Articles by D.E. Hammoudi
Total Records ( 2 ) for D.E. Hammoudi
  M.S. Hamani and D.E. Hammoudi
  The good quality of the castings out of copper alloys is related particularly to the interest which it is necessary to carry on the elimination of the hydrogen which exerts a negative influence on the properties of liquid alloys. The speed of the absorption of nitrogen and its elimination of liquid alloy decreases appreciably in the presence of low contents of active substances. In our work studies on the influence of certain factors are presented on the kinetics of the elimination of hydrogen starting from copper and its alloys. For the study one chose pure copper, copper with the additions of phosphorus 0.01 and 0. 04%, of tin 10% and nickel 10%, i.e. with components, having various surface activities.
  D.E. Hammoudi , M.S. Hamani and M.C.Djouamaa
  One can that the indudtry of cast iron foundry manufactures invisible products, no matter what vital, then that they are machined before becoing the components of machines where equipment for all industries. The knowledge of the pig iron and cast iron is not thing simple, complex are the phenomena which accompany, as well solidification as cooling in a solid state such alloys and complex also are the effects, on the pace of the solid product cold. Various components elements the castiron and can obstained satisfactory results, only the founders who inculed/understand prefectly, which occurs in the mould. The addition of alloy element suitable in the pig iron and cast iron makes it possible to modify the structure and to still improve the mechanical, physical characteristics...etc. Thus, one goes, one studied the influence of the mechanical properties and the distribution of the elements between the structural components according to the section of the cylinders at the speed of their cooling.
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