Sand surface

 GA-95 for aluminum acidic sand surface treatment, get even delicate sand surface. First, the characteristics (1) The GA-95 were sand surface treatment, low loss profiles, profiles of consumption per ton of aluminum is 3 --- 5 kg, plus sand was not more than 8 kg (2) GA-95's consumption, GA-95A (water) --- 8 kg to 5 kg. Second, the process: profiles → degreasing → washing → GA-95 sand surface process → washing → significant sand (caustic) → washing → neutralization → washing → anodizing → washing → closed → washing three, GA-95 acidic sand surface treatment process specification (1) sand acid treatment process GA-95 30ml / L ammonium hydrogen fluoride 70-80g / L pH 2.8-3.5 at 45 --- 50 C Time 1 --- 5 minutes (2) was the sand surface treatment processes NaOH 45 --- 50g / l GA-92 longevity alkaline etching agent 25ml / l at 50 --- 60 C for 1 --- 3 minutes (3) and in the process HNO3 100g / l H2SO4 100g / l room temperature for 1 minute time sand surface treated with an acidic, sand the surface to deal with pressure-bath slag processing, use about every two days, bath sand surface should be filtered, and the residue were press-filtered and the filtrate back groove continue to use the residue discarded. Heating pipes should be made of 316L stainless steel heating tubes.