DGR Degasser With Grain Refiner
Product in Brief
Aluminium & its alloys are susceptible in absorbing gas even when the best-controlled melting processes are performed. There are many factors which cause absorption of Hydrogen gas like water vapour from atmosphere, damp scrap, clamp tools, prolonged holding of metals etc. During the process of casting these unwanted gases release suddenly in the form of bubbles, which are trapped in the metal, and finally the development of pinhole porosity in the cast product occur. It is therefore necessary to remove the unwanted gas from the melt prior to pouring.
DAGADGR SP-I (BLUE)
It is a Very strong type of tablet, which is used for Degas Sing Aluminium and its alloys as well as Grain Refining also. Its application rate is about 0.2
After attaining the required metal temperature, shut off the furnace to have better effect at falling temperature. DEGASSER or DGR tablet is to be slightly heated before use after removing the wrapper. The precaution is to be taken to avoid exposure of tablet to the atmosphere as it may pick up the moisture.Push the dross a little aside and plunge DEGASSER or DGR using a preheated perforated pIUnger to the bottom of the melt. As soon as the bubbling stops remove the plunger after rabbling, skim off the dross.
DAGA DEGASSERS AND DAGA DGRs are available in the shape of 50 Gms. & 250 Gms, packed in 25 kgs, 30 kgs & 40 kgs Boxes.