Product Application
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Concentration - 50 - 60 g/l
Free Alkanity - 3 - 4 ml
Temperature - 50 - 600 C
Time - 3 - 10 minutes
Solution of 4-5% concentration of the RXSOL Gbond AL 38 can be use for cleaning and For no-etch cleaning as the concentration is increased 5-10%, the time should be decreased to prevent etching. Even at low concentrations, some light clouding of buffed surfaces may be noticed during prolonged immersion. This will not be visible after plating or other finishing.
Cleaning is accomplished by simple immersion of the work in RXSOL Gbond AL 38 If the cleaner is operated as a mild-etch cleaner, a light smut will form on the surface of aluminium. The extent of smut formation will depend upon the etching time and the composition of the alloy. Alloys high in copper or silicon form a dark smut. Copper smuts can be removed in 66% v/v by solution of Rxsol Passivation Liquid. If silicon is present in addition to copper, us RXSOL Passivation Liquid in net form.
RXSOL Gbond AL 38 is with corrosion inhibitor and buffered to prevent attack on Aluminium, Zinc and other sensitive metals. No etching of aluminium occurs at low concentration and temperature, whereas mild controlled etching can be achieved at higher concentration and temperature. RXSOL Gbond AL 38 has good detergency Power to removes soil light buffing compounds and marking ink. (However, for removal of heavy soil and buffing compounds, kindly use Rxsol Degreaser Emulsion.)
Procedure for checking the concentration of Bath Solution
ANALYTICAL CONTROL :
Take the 10ml bath solution in 500ml Becker or conical Flask. .Add few drops of Phenolphthanlien indicator , solution turn in Pink Color. Titrate against 1N H2SO4 from pink to colourless end point.
Calculation : Burrett Reading = Free Alkalinity.
