Zincates

PRO 445

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.

Advantages
  • Non Cyanide formulation
  • Superior adhesion power
  • Ideal for deep recesses and complex parts
  • Multi alloy formulation
  • Plate without the use of a copper strike
  • Used on all aluminium alloys
  • Can be easily controlled
  • Easy and economical to use
Solution Make-up and Operating Conditions
AlSeal-Pro 445 NC MAKE-UP*
Solution is maintained with AlSeal-Pro 445 NC-M		 60% BV
Temperature 15 – 25 °C
Time 15-60 secs
Agitation Air or Mech
PROCESS CYCLE
  1. Aluminum Soak Cleaner 602.
  2. Rinse
  3. Etch (where applicable).
  4. Rinse
  5. Desmut.
  6. Rinse
  7. AlSeal-Po 445 NC
  8. Rinse
  9. Plate as required.

    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;

  10. Strip AlSeal-Pro 445 NC zincate in 50%/vol. nitric acid
  11. Rinse.
  12. AlSeal-Pro 445 NC
  13. Rinse.
  14. Plate as required.

    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).
    3B. Rinse.

    This should then be followed by the single dip cycle using 50% nitric acid as the desmut.

    Please note that the information above for this chemical is partial. Click the button below to request full technical information sheet.
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