NAPAL 950 – FLUX FOR SODIUM ADDITION
Napal 950 is a tablet flux, to be immersed, after preheating at 200°C, into liquid Aluminium-Silicon alloys in order to add the necessary quantity of Sodium to perform the modification. Sodium induces a radical change of the solidification structure, with the disappearance of large crystals of primary Silicon and the modification of acicular (needle type) eutectic into rounded particles, properly dispersed in the “alfa” solid structure. The result is proved by the appearance of small, fine, dentrites cells.
The consequence is the improvement of mechanical properties, especially the elongation values. The product is easy to use and safe for the operators. The product does not contain soluble fluorides.