AlSeal-Pro 445 NC is unique non-cyanide, multi-alloy bonding process for aluminum and aluminum alloys. It enables many different electrodeposits to be applied directly without intermediate copper or brass plating. It works on a wide variety of aluminum alloys, with outstanding performance on highly specialized applications such as tooling, wheel manufacturing and memory disc applications.
AlSeal-Pro 445 NC, unlike conventional zincates, assures maximum adhesion and corrosion resistance. It produces a film on aluminum that may be plated directly with semi-bright, bright, or electroless nickel, cyanide or pyrophosphate copper, brass, silver, chrome, acid tin, zinc or cad.
AlSeal-Pro 445 NC is can be utilized to plate metals on a wide range of alloys, including those containing up to 5% copper, 9% magnesium, 1 % manganese, 13% silicon or 6% tin. It substantially reduces rejects and in combination with its long life, makes the process very economical.
|AlSeal-Pro 445 NC MAKE-UP*
Solution is maintained with AlSeal-Pro 445 NC-M
|Temperature||15 – 25 °C|
|Agitation||Air or Mech|
A double-dip cycle is recommended for many cast alloys and wrought alloys which contain little or no magnesium and also any unknown alloys. In that case, proceed from step #8 as follows;
High magnesium alloys, particularly 5052, 6061 and 6063, use an additional step prior to Step 5 in basic cycle.
3A. Etch in 15% by volume sulfuric acid for 2-5 minutes at 180° F (82° C).
This should then be followed by the single dip cycle using 50% nitric acid as the desmut.